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2773 lines
100 KiB
2773 lines
100 KiB
/* |
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* VP7/VP8 compatible video decoder |
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* |
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* Copyright (C) 2010 David Conrad |
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* Copyright (C) 2010 Ronald S. Bultje |
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* Copyright (C) 2010 Fiona Glaser |
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* Copyright (C) 2012 Daniel Kang |
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* Copyright (C) 2014 Peter Ross |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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|
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#include "libavutil/imgutils.h" |
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|
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#include "avcodec.h" |
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#include "internal.h" |
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#include "rectangle.h" |
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#include "thread.h" |
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#include "vp8.h" |
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#include "vp8data.h" |
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|
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#if ARCH_ARM |
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# include "arm/vp8.h" |
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#endif |
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|
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static void free_buffers(VP8Context *s) |
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{ |
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int i; |
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if (s->thread_data) |
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for (i = 0; i < MAX_THREADS; i++) { |
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#if HAVE_THREADS |
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pthread_cond_destroy(&s->thread_data[i].cond); |
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pthread_mutex_destroy(&s->thread_data[i].lock); |
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#endif |
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av_freep(&s->thread_data[i].filter_strength); |
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} |
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av_freep(&s->thread_data); |
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av_freep(&s->macroblocks_base); |
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av_freep(&s->intra4x4_pred_mode_top); |
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av_freep(&s->top_nnz); |
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av_freep(&s->top_border); |
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s->macroblocks = NULL; |
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} |
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|
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static int vp8_alloc_frame(VP8Context *s, VP8Frame *f, int ref) |
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{ |
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int ret; |
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if ((ret = ff_thread_get_buffer(s->avctx, &f->tf, |
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ref ? AV_GET_BUFFER_FLAG_REF : 0)) < 0) |
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return ret; |
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if (!(f->seg_map = av_buffer_allocz(s->mb_width * s->mb_height))) { |
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ff_thread_release_buffer(s->avctx, &f->tf); |
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return AVERROR(ENOMEM); |
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} |
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return 0; |
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} |
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|
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static void vp8_release_frame(VP8Context *s, VP8Frame *f) |
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{ |
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av_buffer_unref(&f->seg_map); |
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ff_thread_release_buffer(s->avctx, &f->tf); |
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} |
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|
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#if CONFIG_VP8_DECODER |
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static int vp8_ref_frame(VP8Context *s, VP8Frame *dst, VP8Frame *src) |
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{ |
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int ret; |
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|
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vp8_release_frame(s, dst); |
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if ((ret = ff_thread_ref_frame(&dst->tf, &src->tf)) < 0) |
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return ret; |
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if (src->seg_map && |
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!(dst->seg_map = av_buffer_ref(src->seg_map))) { |
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vp8_release_frame(s, dst); |
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return AVERROR(ENOMEM); |
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} |
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return 0; |
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} |
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#endif /* CONFIG_VP8_DECODER */ |
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static void vp8_decode_flush_impl(AVCodecContext *avctx, int free_mem) |
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{ |
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VP8Context *s = avctx->priv_data; |
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int i; |
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for (i = 0; i < FF_ARRAY_ELEMS(s->frames); i++) |
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vp8_release_frame(s, &s->frames[i]); |
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memset(s->framep, 0, sizeof(s->framep)); |
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if (free_mem) |
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free_buffers(s); |
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} |
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static void vp8_decode_flush(AVCodecContext *avctx) |
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{ |
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vp8_decode_flush_impl(avctx, 0); |
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} |
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static VP8Frame *vp8_find_free_buffer(VP8Context *s) |
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{ |
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VP8Frame *frame = NULL; |
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int i; |
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|
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// find a free buffer |
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for (i = 0; i < 5; i++) |
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if (&s->frames[i] != s->framep[VP56_FRAME_CURRENT] && |
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&s->frames[i] != s->framep[VP56_FRAME_PREVIOUS] && |
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&s->frames[i] != s->framep[VP56_FRAME_GOLDEN] && |
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&s->frames[i] != s->framep[VP56_FRAME_GOLDEN2]) { |
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frame = &s->frames[i]; |
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break; |
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} |
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if (i == 5) { |
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av_log(s->avctx, AV_LOG_FATAL, "Ran out of free frames!\n"); |
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abort(); |
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} |
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if (frame->tf.f->data[0]) |
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vp8_release_frame(s, frame); |
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|
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return frame; |
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} |
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static av_always_inline |
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int update_dimensions(VP8Context *s, int width, int height, int is_vp7) |
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{ |
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AVCodecContext *avctx = s->avctx; |
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int i, ret; |
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|
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if (width != s->avctx->width || |
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height != s->avctx->height) { |
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vp8_decode_flush_impl(s->avctx, 1); |
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ret = ff_set_dimensions(s->avctx, width, height); |
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if (ret < 0) |
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return ret; |
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} |
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s->mb_width = (s->avctx->coded_width + 15) / 16; |
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s->mb_height = (s->avctx->coded_height + 15) / 16; |
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s->mb_layout = is_vp7 || avctx->active_thread_type == FF_THREAD_SLICE && |
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FFMIN(s->num_coeff_partitions, avctx->thread_count) > 1; |
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if (!s->mb_layout) { // Frame threading and one thread |
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s->macroblocks_base = av_mallocz((s->mb_width + s->mb_height * 2 + 1) * |
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sizeof(*s->macroblocks)); |
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s->intra4x4_pred_mode_top = av_mallocz(s->mb_width * 4); |
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} else // Sliced threading |
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s->macroblocks_base = av_mallocz((s->mb_width + 2) * (s->mb_height + 2) * |
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sizeof(*s->macroblocks)); |
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s->top_nnz = av_mallocz(s->mb_width * sizeof(*s->top_nnz)); |
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s->top_border = av_mallocz((s->mb_width + 1) * sizeof(*s->top_border)); |
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s->thread_data = av_mallocz(MAX_THREADS * sizeof(VP8ThreadData)); |
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for (i = 0; i < MAX_THREADS; i++) { |
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s->thread_data[i].filter_strength = |
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av_mallocz(s->mb_width * sizeof(*s->thread_data[0].filter_strength)); |
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#if HAVE_THREADS |
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pthread_mutex_init(&s->thread_data[i].lock, NULL); |
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pthread_cond_init(&s->thread_data[i].cond, NULL); |
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#endif |
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} |
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if (!s->macroblocks_base || !s->top_nnz || !s->top_border || |
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(!s->intra4x4_pred_mode_top && !s->mb_layout)) |
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return AVERROR(ENOMEM); |
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s->macroblocks = s->macroblocks_base + 1; |
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return 0; |
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} |
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static int vp7_update_dimensions(VP8Context *s, int width, int height) |
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{ |
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return update_dimensions(s, width, height, IS_VP7); |
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} |
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static int vp8_update_dimensions(VP8Context *s, int width, int height) |
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{ |
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return update_dimensions(s, width, height, IS_VP8); |
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} |
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static void parse_segment_info(VP8Context *s) |
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{ |
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VP56RangeCoder *c = &s->c; |
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int i; |
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s->segmentation.update_map = vp8_rac_get(c); |
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if (vp8_rac_get(c)) { // update segment feature data |
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s->segmentation.absolute_vals = vp8_rac_get(c); |
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for (i = 0; i < 4; i++) |
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s->segmentation.base_quant[i] = vp8_rac_get_sint(c, 7); |
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for (i = 0; i < 4; i++) |
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s->segmentation.filter_level[i] = vp8_rac_get_sint(c, 6); |
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} |
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if (s->segmentation.update_map) |
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for (i = 0; i < 3; i++) |
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s->prob->segmentid[i] = vp8_rac_get(c) ? vp8_rac_get_uint(c, 8) : 255; |
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} |
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static void update_lf_deltas(VP8Context *s) |
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{ |
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VP56RangeCoder *c = &s->c; |
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int i; |
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for (i = 0; i < 4; i++) { |
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if (vp8_rac_get(c)) { |
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s->lf_delta.ref[i] = vp8_rac_get_uint(c, 6); |
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if (vp8_rac_get(c)) |
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s->lf_delta.ref[i] = -s->lf_delta.ref[i]; |
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} |
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} |
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for (i = MODE_I4x4; i <= VP8_MVMODE_SPLIT; i++) { |
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if (vp8_rac_get(c)) { |
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s->lf_delta.mode[i] = vp8_rac_get_uint(c, 6); |
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|
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if (vp8_rac_get(c)) |
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s->lf_delta.mode[i] = -s->lf_delta.mode[i]; |
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} |
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} |
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} |
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static int setup_partitions(VP8Context *s, const uint8_t *buf, int buf_size) |
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{ |
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const uint8_t *sizes = buf; |
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int i; |
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s->num_coeff_partitions = 1 << vp8_rac_get_uint(&s->c, 2); |
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|
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buf += 3 * (s->num_coeff_partitions - 1); |
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buf_size -= 3 * (s->num_coeff_partitions - 1); |
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if (buf_size < 0) |
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return -1; |
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|
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for (i = 0; i < s->num_coeff_partitions - 1; i++) { |
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int size = AV_RL24(sizes + 3 * i); |
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if (buf_size - size < 0) |
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return -1; |
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|
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ff_vp56_init_range_decoder(&s->coeff_partition[i], buf, size); |
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buf += size; |
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buf_size -= size; |
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} |
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ff_vp56_init_range_decoder(&s->coeff_partition[i], buf, buf_size); |
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return 0; |
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} |
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static void vp7_get_quants(VP8Context *s) |
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{ |
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VP56RangeCoder *c = &s->c; |
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int yac_qi = vp8_rac_get_uint(c, 7); |
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int ydc_qi = vp8_rac_get(c) ? vp8_rac_get_uint(c, 7) : yac_qi; |
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int y2dc_qi = vp8_rac_get(c) ? vp8_rac_get_uint(c, 7) : yac_qi; |
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int y2ac_qi = vp8_rac_get(c) ? vp8_rac_get_uint(c, 7) : yac_qi; |
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int uvdc_qi = vp8_rac_get(c) ? vp8_rac_get_uint(c, 7) : yac_qi; |
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int uvac_qi = vp8_rac_get(c) ? vp8_rac_get_uint(c, 7) : yac_qi; |
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s->qmat[0].luma_qmul[0] = vp7_ydc_qlookup[ydc_qi]; |
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s->qmat[0].luma_qmul[1] = vp7_yac_qlookup[yac_qi]; |
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s->qmat[0].luma_dc_qmul[0] = vp7_y2dc_qlookup[y2dc_qi]; |
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s->qmat[0].luma_dc_qmul[1] = vp7_y2ac_qlookup[y2ac_qi]; |
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s->qmat[0].chroma_qmul[0] = FFMIN(vp7_ydc_qlookup[uvdc_qi], 132); |
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s->qmat[0].chroma_qmul[1] = vp7_yac_qlookup[uvac_qi]; |
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} |
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static void get_quants(VP8Context *s) |
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{ |
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VP56RangeCoder *c = &s->c; |
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int i, base_qi; |
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|
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int yac_qi = vp8_rac_get_uint(c, 7); |
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int ydc_delta = vp8_rac_get_sint(c, 4); |
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int y2dc_delta = vp8_rac_get_sint(c, 4); |
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int y2ac_delta = vp8_rac_get_sint(c, 4); |
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int uvdc_delta = vp8_rac_get_sint(c, 4); |
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int uvac_delta = vp8_rac_get_sint(c, 4); |
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for (i = 0; i < 4; i++) { |
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if (s->segmentation.enabled) { |
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base_qi = s->segmentation.base_quant[i]; |
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if (!s->segmentation.absolute_vals) |
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base_qi += yac_qi; |
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} else |
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base_qi = yac_qi; |
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|
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s->qmat[i].luma_qmul[0] = vp8_dc_qlookup[av_clip_uintp2(base_qi + ydc_delta, 7)]; |
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s->qmat[i].luma_qmul[1] = vp8_ac_qlookup[av_clip_uintp2(base_qi, 7)]; |
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s->qmat[i].luma_dc_qmul[0] = vp8_dc_qlookup[av_clip_uintp2(base_qi + y2dc_delta, 7)] * 2; |
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/* 101581>>16 is equivalent to 155/100 */ |
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s->qmat[i].luma_dc_qmul[1] = vp8_ac_qlookup[av_clip_uintp2(base_qi + y2ac_delta, 7)] * 101581 >> 16; |
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s->qmat[i].chroma_qmul[0] = vp8_dc_qlookup[av_clip_uintp2(base_qi + uvdc_delta, 7)]; |
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s->qmat[i].chroma_qmul[1] = vp8_ac_qlookup[av_clip_uintp2(base_qi + uvac_delta, 7)]; |
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|
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s->qmat[i].luma_dc_qmul[1] = FFMAX(s->qmat[i].luma_dc_qmul[1], 8); |
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s->qmat[i].chroma_qmul[0] = FFMIN(s->qmat[i].chroma_qmul[0], 132); |
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} |
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} |
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|
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/** |
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* Determine which buffers golden and altref should be updated with after this frame. |
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* The spec isn't clear here, so I'm going by my understanding of what libvpx does |
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* |
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* Intra frames update all 3 references |
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* Inter frames update VP56_FRAME_PREVIOUS if the update_last flag is set |
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* If the update (golden|altref) flag is set, it's updated with the current frame |
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* if update_last is set, and VP56_FRAME_PREVIOUS otherwise. |
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* If the flag is not set, the number read means: |
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* 0: no update |
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* 1: VP56_FRAME_PREVIOUS |
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* 2: update golden with altref, or update altref with golden |
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*/ |
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static VP56Frame ref_to_update(VP8Context *s, int update, VP56Frame ref) |
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{ |
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VP56RangeCoder *c = &s->c; |
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|
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if (update) |
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return VP56_FRAME_CURRENT; |
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|
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switch (vp8_rac_get_uint(c, 2)) { |
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case 1: |
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return VP56_FRAME_PREVIOUS; |
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case 2: |
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return (ref == VP56_FRAME_GOLDEN) ? VP56_FRAME_GOLDEN2 : VP56_FRAME_GOLDEN; |
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} |
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return VP56_FRAME_NONE; |
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} |
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static void vp78_reset_probability_tables(VP8Context *s) |
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{ |
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int i, j; |
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for (i = 0; i < 4; i++) |
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for (j = 0; j < 16; j++) |
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memcpy(s->prob->token[i][j], vp8_token_default_probs[i][vp8_coeff_band[j]], |
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sizeof(s->prob->token[i][j])); |
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} |
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static void vp78_update_probability_tables(VP8Context *s) |
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{ |
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VP56RangeCoder *c = &s->c; |
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int i, j, k, l, m; |
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|
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for (i = 0; i < 4; i++) |
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for (j = 0; j < 8; j++) |
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for (k = 0; k < 3; k++) |
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for (l = 0; l < NUM_DCT_TOKENS-1; l++) |
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if (vp56_rac_get_prob_branchy(c, vp8_token_update_probs[i][j][k][l])) { |
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int prob = vp8_rac_get_uint(c, 8); |
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for (m = 0; vp8_coeff_band_indexes[j][m] >= 0; m++) |
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s->prob->token[i][vp8_coeff_band_indexes[j][m]][k][l] = prob; |
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} |
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} |
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|
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#define VP7_MVC_SIZE 17 |
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#define VP8_MVC_SIZE 19 |
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|
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static void vp78_update_pred16x16_pred8x8_mvc_probabilities(VP8Context *s, |
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int mvc_size) |
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{ |
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VP56RangeCoder *c = &s->c; |
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int i, j; |
|
|
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if (vp8_rac_get(c)) |
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for (i = 0; i < 4; i++) |
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s->prob->pred16x16[i] = vp8_rac_get_uint(c, 8); |
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if (vp8_rac_get(c)) |
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for (i = 0; i < 3; i++) |
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s->prob->pred8x8c[i] = vp8_rac_get_uint(c, 8); |
|
|
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// 17.2 MV probability update |
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for (i = 0; i < 2; i++) |
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for (j = 0; j < mvc_size; j++) |
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if (vp56_rac_get_prob_branchy(c, vp8_mv_update_prob[i][j])) |
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s->prob->mvc[i][j] = vp8_rac_get_nn(c); |
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} |
|
|
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static void update_refs(VP8Context *s) |
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{ |
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VP56RangeCoder *c = &s->c; |
|
|
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int update_golden = vp8_rac_get(c); |
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int update_altref = vp8_rac_get(c); |
|
|
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s->update_golden = ref_to_update(s, update_golden, VP56_FRAME_GOLDEN); |
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s->update_altref = ref_to_update(s, update_altref, VP56_FRAME_GOLDEN2); |
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} |
|
|
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static void copy_luma(AVFrame *dst, AVFrame *src, int width, int height) |
|
{ |
|
int i, j; |
|
|
|
for (j = 1; j < 3; j++) { |
|
for (i = 0; i < height / 2; i++) |
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memcpy(dst->data[j] + i * dst->linesize[j], |
|
src->data[j] + i * src->linesize[j], width / 2); |
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} |
|
} |
|
|
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static void fade(uint8_t *dst, uint8_t *src, |
|
int width, int height, int linesize, |
|
int alpha, int beta) |
|
{ |
|
int i, j; |
|
|
|
for (j = 0; j < height; j++) { |
|
for (i = 0; i < width; i++) { |
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uint8_t y = src[j * linesize + i]; |
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dst[j * linesize + i] = av_clip_uint8(y + ((y * beta) >> 8) + alpha); |
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} |
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} |
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} |
|
|
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static int vp7_fade_frame(VP8Context *s, VP56RangeCoder *c) |
|
{ |
|
int alpha = (int8_t) vp8_rac_get_uint(c, 8); |
|
int beta = (int8_t) vp8_rac_get_uint(c, 8); |
|
int ret; |
|
|
|
if (!s->keyframe && (alpha || beta)) { |
|
int width = s->mb_width * 16; |
|
int height = s->mb_height * 16; |
|
AVFrame *src, *dst; |
|
|
|
if (!s->framep[VP56_FRAME_PREVIOUS]) |
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return AVERROR_INVALIDDATA; |
|
|
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dst = |
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src = s->framep[VP56_FRAME_PREVIOUS]->tf.f; |
|
|
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/* preserve the golden frame, write a new previous frame */ |
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if (s->framep[VP56_FRAME_GOLDEN] == s->framep[VP56_FRAME_PREVIOUS]) { |
|
s->framep[VP56_FRAME_PREVIOUS] = vp8_find_free_buffer(s); |
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if ((ret = vp8_alloc_frame(s, s->framep[VP56_FRAME_PREVIOUS], 1)) < 0) |
|
return ret; |
|
|
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dst = s->framep[VP56_FRAME_PREVIOUS]->tf.f; |
|
|
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copy_luma(dst, src, width, height); |
|
} |
|
|
|
fade(dst->data[0], src->data[0], |
|
width, height, dst->linesize[0], alpha, beta); |
|
} |
|
|
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return 0; |
|
} |
|
|
|
static int vp7_decode_frame_header(VP8Context *s, const uint8_t *buf, int buf_size) |
|
{ |
|
VP56RangeCoder *c = &s->c; |
|
int part1_size, hscale, vscale, i, j, ret; |
|
int width = s->avctx->width; |
|
int height = s->avctx->height; |
|
|
|
s->profile = (buf[0] >> 1) & 7; |
|
if (s->profile > 1) { |
|
avpriv_request_sample(s->avctx, "Unknown profile %d", s->profile); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
s->keyframe = !(buf[0] & 1); |
|
s->invisible = 0; |
|
part1_size = AV_RL24(buf) >> 4; |
|
|
|
buf += 4 - s->profile; |
|
buf_size -= 4 - s->profile; |
|
|
|
memcpy(s->put_pixels_tab, s->vp8dsp.put_vp8_epel_pixels_tab, sizeof(s->put_pixels_tab)); |
|
|
|
ff_vp56_init_range_decoder(c, buf, part1_size); |
|
buf += part1_size; |
|
buf_size -= part1_size; |
|
|
|
/* A. Dimension information (keyframes only) */ |
|
if (s->keyframe) { |
|
width = vp8_rac_get_uint(c, 12); |
|
height = vp8_rac_get_uint(c, 12); |
|
hscale = vp8_rac_get_uint(c, 2); |
|
vscale = vp8_rac_get_uint(c, 2); |
|
if (hscale || vscale) |
|
avpriv_request_sample(s->avctx, "Upscaling"); |
|
|
|
s->update_golden = s->update_altref = VP56_FRAME_CURRENT; |
|
vp78_reset_probability_tables(s); |
|
memcpy(s->prob->pred16x16, vp8_pred16x16_prob_inter, |
|
sizeof(s->prob->pred16x16)); |
|
memcpy(s->prob->pred8x8c, vp8_pred8x8c_prob_inter, |
|
sizeof(s->prob->pred8x8c)); |
|
for (i = 0; i < 2; i++) |
|
memcpy(s->prob->mvc[i], vp7_mv_default_prob[i], |
|
sizeof(vp7_mv_default_prob[i])); |
|
memset(&s->segmentation, 0, sizeof(s->segmentation)); |
|
memset(&s->lf_delta, 0, sizeof(s->lf_delta)); |
|
memcpy(s->prob[0].scan, zigzag_scan, sizeof(s->prob[0].scan)); |
|
} |
|
|
|
if (s->keyframe || s->profile > 0) |
|
memset(s->inter_dc_pred, 0 , sizeof(s->inter_dc_pred)); |
|
|
|
/* B. Decoding information for all four macroblock-level features */ |
|
for (i = 0; i < 4; i++) { |
|
s->feature_enabled[i] = vp8_rac_get(c); |
|
if (s->feature_enabled[i]) { |
|
s->feature_present_prob[i] = vp8_rac_get_uint(c, 8); |
|
|
|
for (j = 0; j < 3; j++) |
|
s->feature_index_prob[i][j] = |
|
vp8_rac_get(c) ? vp8_rac_get_uint(c, 8) : 255; |
|
|
|
if (vp7_feature_value_size[s->profile][i]) |
|
for (j = 0; j < 4; j++) |
|
s->feature_value[i][j] = |
|
vp8_rac_get(c) ? vp8_rac_get_uint(c, vp7_feature_value_size[s->profile][i]) : 0; |
|
} |
|
} |
|
|
|
s->segmentation.enabled = 0; |
|
s->segmentation.update_map = 0; |
|
s->lf_delta.enabled = 0; |
|
|
|
s->num_coeff_partitions = 1; |
|
ff_vp56_init_range_decoder(&s->coeff_partition[0], buf, buf_size); |
|
|
|
if (!s->macroblocks_base || /* first frame */ |
|
width != s->avctx->width || height != s->avctx->height || |
|
(width + 15) / 16 != s->mb_width || (height + 15) / 16 != s->mb_height) { |
|
if ((ret = vp7_update_dimensions(s, width, height)) < 0) |
|
return ret; |
|
} |
|
|
|
/* C. Dequantization indices */ |
|
vp7_get_quants(s); |
|
|
|
/* D. Golden frame update flag (a Flag) for interframes only */ |
|
if (!s->keyframe) { |
|
s->update_golden = vp8_rac_get(c) ? VP56_FRAME_CURRENT : VP56_FRAME_NONE; |
|
s->sign_bias[VP56_FRAME_GOLDEN] = 0; |
|
} |
|
|
|
s->update_last = 1; |
|
s->update_probabilities = 1; |
|
s->fade_present = 1; |
|
|
|
if (s->profile > 0) { |
|
s->update_probabilities = vp8_rac_get(c); |
|
if (!s->update_probabilities) |
|
s->prob[1] = s->prob[0]; |
|
|
|
if (!s->keyframe) |
|
s->fade_present = vp8_rac_get(c); |
|
} |
|
|
|
/* E. Fading information for previous frame */ |
|
if (s->fade_present && vp8_rac_get(c)) { |
|
if ((ret = vp7_fade_frame(s ,c)) < 0) |
|
return ret; |
|
} |
|
|
|
/* F. Loop filter type */ |
|
if (!s->profile) |
|
s->filter.simple = vp8_rac_get(c); |
|
|
|
/* G. DCT coefficient ordering specification */ |
|
if (vp8_rac_get(c)) |
|
for (i = 1; i < 16; i++) |
|
s->prob[0].scan[i] = zigzag_scan[vp8_rac_get_uint(c, 4)]; |
|
|
|
/* H. Loop filter levels */ |
|
if (s->profile > 0) |
|
s->filter.simple = vp8_rac_get(c); |
|
s->filter.level = vp8_rac_get_uint(c, 6); |
|
s->filter.sharpness = vp8_rac_get_uint(c, 3); |
|
|
|
/* I. DCT coefficient probability update; 13.3 Token Probability Updates */ |
|
vp78_update_probability_tables(s); |
|
|
|
s->mbskip_enabled = 0; |
|
|
|
/* J. The remaining frame header data occurs ONLY FOR INTERFRAMES */ |
|
if (!s->keyframe) { |
|
s->prob->intra = vp8_rac_get_uint(c, 8); |
|
s->prob->last = vp8_rac_get_uint(c, 8); |
|
vp78_update_pred16x16_pred8x8_mvc_probabilities(s, VP7_MVC_SIZE); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int vp8_decode_frame_header(VP8Context *s, const uint8_t *buf, int buf_size) |
|
{ |
|
VP56RangeCoder *c = &s->c; |
|
int header_size, hscale, vscale, ret; |
|
int width = s->avctx->width; |
|
int height = s->avctx->height; |
|
|
|
s->keyframe = !(buf[0] & 1); |
|
s->profile = (buf[0]>>1) & 7; |
|
s->invisible = !(buf[0] & 0x10); |
|
header_size = AV_RL24(buf) >> 5; |
|
buf += 3; |
|
buf_size -= 3; |
|
|
|
if (s->profile > 3) |
|
av_log(s->avctx, AV_LOG_WARNING, "Unknown profile %d\n", s->profile); |
|
|
|
if (!s->profile) |
|
memcpy(s->put_pixels_tab, s->vp8dsp.put_vp8_epel_pixels_tab, |
|
sizeof(s->put_pixels_tab)); |
|
else // profile 1-3 use bilinear, 4+ aren't defined so whatever |
|
memcpy(s->put_pixels_tab, s->vp8dsp.put_vp8_bilinear_pixels_tab, |
|
sizeof(s->put_pixels_tab)); |
|
|
|
if (header_size > buf_size - 7 * s->keyframe) { |
|
av_log(s->avctx, AV_LOG_ERROR, "Header size larger than data provided\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (s->keyframe) { |
|
if (AV_RL24(buf) != 0x2a019d) { |
|
av_log(s->avctx, AV_LOG_ERROR, |
|
"Invalid start code 0x%x\n", AV_RL24(buf)); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
width = AV_RL16(buf + 3) & 0x3fff; |
|
height = AV_RL16(buf + 5) & 0x3fff; |
|
hscale = buf[4] >> 6; |
|
vscale = buf[6] >> 6; |
|
buf += 7; |
|
buf_size -= 7; |
|
|
|
if (hscale || vscale) |
|
avpriv_request_sample(s->avctx, "Upscaling"); |
|
|
|
s->update_golden = s->update_altref = VP56_FRAME_CURRENT; |
|
vp78_reset_probability_tables(s); |
|
memcpy(s->prob->pred16x16, vp8_pred16x16_prob_inter, |
|
sizeof(s->prob->pred16x16)); |
|
memcpy(s->prob->pred8x8c, vp8_pred8x8c_prob_inter, |
|
sizeof(s->prob->pred8x8c)); |
|
memcpy(s->prob->mvc, vp8_mv_default_prob, |
|
sizeof(s->prob->mvc)); |
|
memset(&s->segmentation, 0, sizeof(s->segmentation)); |
|
memset(&s->lf_delta, 0, sizeof(s->lf_delta)); |
|
} |
|
|
|
ff_vp56_init_range_decoder(c, buf, header_size); |
|
buf += header_size; |
|
buf_size -= header_size; |
|
|
|
if (s->keyframe) { |
|
s->colorspace = vp8_rac_get(c); |
|
if (s->colorspace) |
|
av_log(s->avctx, AV_LOG_WARNING, "Unspecified colorspace\n"); |
|
s->fullrange = vp8_rac_get(c); |
|
} |
|
|
|
if ((s->segmentation.enabled = vp8_rac_get(c))) |
|
parse_segment_info(s); |
|
else |
|
s->segmentation.update_map = 0; // FIXME: move this to some init function? |
|
|
|
s->filter.simple = vp8_rac_get(c); |
|
s->filter.level = vp8_rac_get_uint(c, 6); |
|
s->filter.sharpness = vp8_rac_get_uint(c, 3); |
|
|
|
if ((s->lf_delta.enabled = vp8_rac_get(c))) |
|
if (vp8_rac_get(c)) |
|
update_lf_deltas(s); |
|
|
|
if (setup_partitions(s, buf, buf_size)) { |
|
av_log(s->avctx, AV_LOG_ERROR, "Invalid partitions\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (!s->macroblocks_base || /* first frame */ |
|
width != s->avctx->width || height != s->avctx->height) |
|
if ((ret = vp8_update_dimensions(s, width, height)) < 0) |
|
return ret; |
|
|
|
get_quants(s); |
|
|
|
if (!s->keyframe) { |
|
update_refs(s); |
|
s->sign_bias[VP56_FRAME_GOLDEN] = vp8_rac_get(c); |
|
s->sign_bias[VP56_FRAME_GOLDEN2 /* altref */] = vp8_rac_get(c); |
|
} |
|
|
|
// if we aren't saving this frame's probabilities for future frames, |
|
// make a copy of the current probabilities |
|
if (!(s->update_probabilities = vp8_rac_get(c))) |
|
s->prob[1] = s->prob[0]; |
|
|
|
s->update_last = s->keyframe || vp8_rac_get(c); |
|
|
|
vp78_update_probability_tables(s); |
|
|
|
if ((s->mbskip_enabled = vp8_rac_get(c))) |
|
s->prob->mbskip = vp8_rac_get_uint(c, 8); |
|
|
|
if (!s->keyframe) { |
|
s->prob->intra = vp8_rac_get_uint(c, 8); |
|
s->prob->last = vp8_rac_get_uint(c, 8); |
|
s->prob->golden = vp8_rac_get_uint(c, 8); |
|
vp78_update_pred16x16_pred8x8_mvc_probabilities(s, VP8_MVC_SIZE); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static av_always_inline |
|
void clamp_mv(VP8Context *s, VP56mv *dst, const VP56mv *src) |
|
{ |
|
dst->x = av_clip(src->x, s->mv_min.x, s->mv_max.x); |
|
dst->y = av_clip(src->y, s->mv_min.y, s->mv_max.y); |
|
} |
|
|
|
/** |
|
* Motion vector coding, 17.1. |
|
*/ |
|
static int read_mv_component(VP56RangeCoder *c, const uint8_t *p, int vp7) |
|
{ |
|
int bit, x = 0; |
|
|
|
if (vp56_rac_get_prob_branchy(c, p[0])) { |
|
int i; |
|
|
|
for (i = 0; i < 3; i++) |
|
x += vp56_rac_get_prob(c, p[9 + i]) << i; |
|
for (i = (vp7 ? 7 : 9); i > 3; i--) |
|
x += vp56_rac_get_prob(c, p[9 + i]) << i; |
|
if (!(x & (vp7 ? 0xF0 : 0xFFF0)) || vp56_rac_get_prob(c, p[12])) |
|
x += 8; |
|
} else { |
|
// small_mvtree |
|
const uint8_t *ps = p + 2; |
|
bit = vp56_rac_get_prob(c, *ps); |
|
ps += 1 + 3 * bit; |
|
x += 4 * bit; |
|
bit = vp56_rac_get_prob(c, *ps); |
|
ps += 1 + bit; |
|
x += 2 * bit; |
|
x += vp56_rac_get_prob(c, *ps); |
|
} |
|
|
|
return (x && vp56_rac_get_prob(c, p[1])) ? -x : x; |
|
} |
|
|
|
static av_always_inline |
|
const uint8_t *get_submv_prob(uint32_t left, uint32_t top, int is_vp7) |
|
{ |
|
if (is_vp7) |
|
return vp7_submv_prob; |
|
|
|
if (left == top) |
|
return vp8_submv_prob[4 - !!left]; |
|
if (!top) |
|
return vp8_submv_prob[2]; |
|
return vp8_submv_prob[1 - !!left]; |
|
} |
|
|
|
/** |
|
* Split motion vector prediction, 16.4. |
|
* @returns the number of motion vectors parsed (2, 4 or 16) |
|
*/ |
|
static av_always_inline |
|
int decode_splitmvs(VP8Context *s, VP56RangeCoder *c, VP8Macroblock *mb, |
|
int layout, int is_vp7) |
|
{ |
|
int part_idx; |
|
int n, num; |
|
VP8Macroblock *top_mb; |
|
VP8Macroblock *left_mb = &mb[-1]; |
|
const uint8_t *mbsplits_left = vp8_mbsplits[left_mb->partitioning]; |
|
const uint8_t *mbsplits_top, *mbsplits_cur, *firstidx; |
|
VP56mv *top_mv; |
|
VP56mv *left_mv = left_mb->bmv; |
|
VP56mv *cur_mv = mb->bmv; |
|
|
|
if (!layout) // layout is inlined, s->mb_layout is not |
|
top_mb = &mb[2]; |
|
else |
|
top_mb = &mb[-s->mb_width - 1]; |
|
mbsplits_top = vp8_mbsplits[top_mb->partitioning]; |
|
top_mv = top_mb->bmv; |
|
|
|
if (vp56_rac_get_prob_branchy(c, vp8_mbsplit_prob[0])) { |
|
if (vp56_rac_get_prob_branchy(c, vp8_mbsplit_prob[1])) |
|
part_idx = VP8_SPLITMVMODE_16x8 + vp56_rac_get_prob(c, vp8_mbsplit_prob[2]); |
|
else |
|
part_idx = VP8_SPLITMVMODE_8x8; |
|
} else { |
|
part_idx = VP8_SPLITMVMODE_4x4; |
|
} |
|
|
|
num = vp8_mbsplit_count[part_idx]; |
|
mbsplits_cur = vp8_mbsplits[part_idx], |
|
firstidx = vp8_mbfirstidx[part_idx]; |
|
mb->partitioning = part_idx; |
|
|
|
for (n = 0; n < num; n++) { |
|
int k = firstidx[n]; |
|
uint32_t left, above; |
|
const uint8_t *submv_prob; |
|
|
|
if (!(k & 3)) |
|
left = AV_RN32A(&left_mv[mbsplits_left[k + 3]]); |
|
else |
|
left = AV_RN32A(&cur_mv[mbsplits_cur[k - 1]]); |
|
if (k <= 3) |
|
above = AV_RN32A(&top_mv[mbsplits_top[k + 12]]); |
|
else |
|
above = AV_RN32A(&cur_mv[mbsplits_cur[k - 4]]); |
|
|
|
submv_prob = get_submv_prob(left, above, is_vp7); |
|
|
|
if (vp56_rac_get_prob_branchy(c, submv_prob[0])) { |
|
if (vp56_rac_get_prob_branchy(c, submv_prob[1])) { |
|
if (vp56_rac_get_prob_branchy(c, submv_prob[2])) { |
|
mb->bmv[n].y = mb->mv.y + |
|
read_mv_component(c, s->prob->mvc[0], is_vp7); |
|
mb->bmv[n].x = mb->mv.x + |
|
read_mv_component(c, s->prob->mvc[1], is_vp7); |
|
} else { |
|
AV_ZERO32(&mb->bmv[n]); |
|
} |
|
} else { |
|
AV_WN32A(&mb->bmv[n], above); |
|
} |
|
} else { |
|
AV_WN32A(&mb->bmv[n], left); |
|
} |
|
} |
|
|
|
return num; |
|
} |
|
|
|
/** |
|
* The vp7 reference decoder uses a padding macroblock column (added to right |
|
* edge of the frame) to guard against illegal macroblock offsets. The |
|
* algorithm has bugs that permit offsets to straddle the padding column. |
|
* This function replicates those bugs. |
|
* |
|
* @param[out] edge_x macroblock x address |
|
* @param[out] edge_y macroblock y address |
|
* |
|
* @return macroblock offset legal (boolean) |
|
*/ |
|
static int vp7_calculate_mb_offset(int mb_x, int mb_y, int mb_width, |
|
int xoffset, int yoffset, int boundary, |
|
int *edge_x, int *edge_y) |
|
{ |
|
int vwidth = mb_width + 1; |
|
int new = (mb_y + yoffset) * vwidth + mb_x + xoffset; |
|
if (new < boundary || new % vwidth == vwidth - 1) |
|
return 0; |
|
*edge_y = new / vwidth; |
|
*edge_x = new % vwidth; |
|
return 1; |
|
} |
|
|
|
static const VP56mv *get_bmv_ptr(const VP8Macroblock *mb, int subblock) |
|
{ |
|
return &mb->bmv[mb->mode == VP8_MVMODE_SPLIT ? vp8_mbsplits[mb->partitioning][subblock] : 0]; |
|
} |
|
|
|
static av_always_inline |
|
void vp7_decode_mvs(VP8Context *s, VP8Macroblock *mb, |
|
int mb_x, int mb_y, int layout) |
|
{ |
|
VP8Macroblock *mb_edge[12]; |
|
enum { CNT_ZERO, CNT_NEAREST, CNT_NEAR }; |
|
enum { VP8_EDGE_TOP, VP8_EDGE_LEFT, VP8_EDGE_TOPLEFT }; |
|
int idx = CNT_ZERO; |
|
VP56mv near_mv[3]; |
|
uint8_t cnt[3] = { 0 }; |
|
VP56RangeCoder *c = &s->c; |
|
int i; |
|
|
|
AV_ZERO32(&near_mv[0]); |
|
AV_ZERO32(&near_mv[1]); |
|
AV_ZERO32(&near_mv[2]); |
|
|
|
for (i = 0; i < VP7_MV_PRED_COUNT; i++) { |
|
const VP7MVPred * pred = &vp7_mv_pred[i]; |
|
int edge_x, edge_y; |
|
|
|
if (vp7_calculate_mb_offset(mb_x, mb_y, s->mb_width, pred->xoffset, |
|
pred->yoffset, !s->profile, &edge_x, &edge_y)) { |
|
VP8Macroblock *edge = mb_edge[i] = (s->mb_layout == 1) |
|
? s->macroblocks_base + 1 + edge_x + |
|
(s->mb_width + 1) * (edge_y + 1) |
|
: s->macroblocks + edge_x + |
|
(s->mb_height - edge_y - 1) * 2; |
|
uint32_t mv = AV_RN32A(get_bmv_ptr(edge, vp7_mv_pred[i].subblock)); |
|
if (mv) { |
|
if (AV_RN32A(&near_mv[CNT_NEAREST])) { |
|
if (mv == AV_RN32A(&near_mv[CNT_NEAREST])) { |
|
idx = CNT_NEAREST; |
|
} else if (AV_RN32A(&near_mv[CNT_NEAR])) { |
|
if (mv != AV_RN32A(&near_mv[CNT_NEAR])) |
|
continue; |
|
idx = CNT_NEAR; |
|
} else { |
|
AV_WN32A(&near_mv[CNT_NEAR], mv); |
|
idx = CNT_NEAR; |
|
} |
|
} else { |
|
AV_WN32A(&near_mv[CNT_NEAREST], mv); |
|
idx = CNT_NEAREST; |
|
} |
|
} else { |
|
idx = CNT_ZERO; |
|
} |
|
} else { |
|
idx = CNT_ZERO; |
|
} |
|
cnt[idx] += vp7_mv_pred[i].score; |
|
} |
|
|
|
mb->partitioning = VP8_SPLITMVMODE_NONE; |
|
|
|
if (vp56_rac_get_prob_branchy(c, vp7_mode_contexts[cnt[CNT_ZERO]][0])) { |
|
mb->mode = VP8_MVMODE_MV; |
|
|
|
if (vp56_rac_get_prob_branchy(c, vp7_mode_contexts[cnt[CNT_NEAREST]][1])) { |
|
|
|
if (vp56_rac_get_prob_branchy(c, vp7_mode_contexts[cnt[CNT_NEAR]][2])) { |
|
|
|
if (cnt[CNT_NEAREST] > cnt[CNT_NEAR]) |
|
AV_WN32A(&mb->mv, cnt[CNT_ZERO] > cnt[CNT_NEAREST] ? 0 : AV_RN32A(&near_mv[CNT_NEAREST])); |
|
else |
|
AV_WN32A(&mb->mv, cnt[CNT_ZERO] > cnt[CNT_NEAR] ? 0 : AV_RN32A(&near_mv[CNT_NEAR])); |
|
|
|
if (vp56_rac_get_prob_branchy(c, vp7_mode_contexts[cnt[CNT_NEAR]][3])) { |
|
mb->mode = VP8_MVMODE_SPLIT; |
|
mb->mv = mb->bmv[decode_splitmvs(s, c, mb, layout, IS_VP7) - 1]; |
|
} else { |
|
mb->mv.y += read_mv_component(c, s->prob->mvc[0], IS_VP7); |
|
mb->mv.x += read_mv_component(c, s->prob->mvc[1], IS_VP7); |
|
mb->bmv[0] = mb->mv; |
|
} |
|
} else { |
|
mb->mv = near_mv[CNT_NEAR]; |
|
mb->bmv[0] = mb->mv; |
|
} |
|
} else { |
|
mb->mv = near_mv[CNT_NEAREST]; |
|
mb->bmv[0] = mb->mv; |
|
} |
|
} else { |
|
mb->mode = VP8_MVMODE_ZERO; |
|
AV_ZERO32(&mb->mv); |
|
mb->bmv[0] = mb->mv; |
|
} |
|
} |
|
|
|
static av_always_inline |
|
void vp8_decode_mvs(VP8Context *s, VP8Macroblock *mb, |
|
int mb_x, int mb_y, int layout) |
|
{ |
|
VP8Macroblock *mb_edge[3] = { 0 /* top */, |
|
mb - 1 /* left */, |
|
0 /* top-left */ }; |
|
enum { CNT_ZERO, CNT_NEAREST, CNT_NEAR, CNT_SPLITMV }; |
|
enum { VP8_EDGE_TOP, VP8_EDGE_LEFT, VP8_EDGE_TOPLEFT }; |
|
int idx = CNT_ZERO; |
|
int cur_sign_bias = s->sign_bias[mb->ref_frame]; |
|
int8_t *sign_bias = s->sign_bias; |
|
VP56mv near_mv[4]; |
|
uint8_t cnt[4] = { 0 }; |
|
VP56RangeCoder *c = &s->c; |
|
|
|
if (!layout) { // layout is inlined (s->mb_layout is not) |
|
mb_edge[0] = mb + 2; |
|
mb_edge[2] = mb + 1; |
|
} else { |
|
mb_edge[0] = mb - s->mb_width - 1; |
|
mb_edge[2] = mb - s->mb_width - 2; |
|
} |
|
|
|
AV_ZERO32(&near_mv[0]); |
|
AV_ZERO32(&near_mv[1]); |
|
AV_ZERO32(&near_mv[2]); |
|
|
|
/* Process MB on top, left and top-left */ |
|
#define MV_EDGE_CHECK(n) \ |
|
{ \ |
|
VP8Macroblock *edge = mb_edge[n]; \ |
|
int edge_ref = edge->ref_frame; \ |
|
if (edge_ref != VP56_FRAME_CURRENT) { \ |
|
uint32_t mv = AV_RN32A(&edge->mv); \ |
|
if (mv) { \ |
|
if (cur_sign_bias != sign_bias[edge_ref]) { \ |
|
/* SWAR negate of the values in mv. */ \ |
|
mv = ~mv; \ |
|
mv = ((mv & 0x7fff7fff) + \ |
|
0x00010001) ^ (mv & 0x80008000); \ |
|
} \ |
|
if (!n || mv != AV_RN32A(&near_mv[idx])) \ |
|
AV_WN32A(&near_mv[++idx], mv); \ |
|
cnt[idx] += 1 + (n != 2); \ |
|
} else \ |
|
cnt[CNT_ZERO] += 1 + (n != 2); \ |
|
} \ |
|
} |
|
|
|
MV_EDGE_CHECK(0) |
|
MV_EDGE_CHECK(1) |
|
MV_EDGE_CHECK(2) |
|
|
|
mb->partitioning = VP8_SPLITMVMODE_NONE; |
|
if (vp56_rac_get_prob_branchy(c, vp8_mode_contexts[cnt[CNT_ZERO]][0])) { |
|
mb->mode = VP8_MVMODE_MV; |
|
|
|
/* If we have three distinct MVs, merge first and last if they're the same */ |
|
if (cnt[CNT_SPLITMV] && |
|
AV_RN32A(&near_mv[1 + VP8_EDGE_TOP]) == AV_RN32A(&near_mv[1 + VP8_EDGE_TOPLEFT])) |
|
cnt[CNT_NEAREST] += 1; |
|
|
|
/* Swap near and nearest if necessary */ |
|
if (cnt[CNT_NEAR] > cnt[CNT_NEAREST]) { |
|
FFSWAP(uint8_t, cnt[CNT_NEAREST], cnt[CNT_NEAR]); |
|
FFSWAP( VP56mv, near_mv[CNT_NEAREST], near_mv[CNT_NEAR]); |
|
} |
|
|
|
if (vp56_rac_get_prob_branchy(c, vp8_mode_contexts[cnt[CNT_NEAREST]][1])) { |
|
if (vp56_rac_get_prob_branchy(c, vp8_mode_contexts[cnt[CNT_NEAR]][2])) { |
|
/* Choose the best mv out of 0,0 and the nearest mv */ |
|
clamp_mv(s, &mb->mv, &near_mv[CNT_ZERO + (cnt[CNT_NEAREST] >= cnt[CNT_ZERO])]); |
|
cnt[CNT_SPLITMV] = ((mb_edge[VP8_EDGE_LEFT]->mode == VP8_MVMODE_SPLIT) + |
|
(mb_edge[VP8_EDGE_TOP]->mode == VP8_MVMODE_SPLIT)) * 2 + |
|
(mb_edge[VP8_EDGE_TOPLEFT]->mode == VP8_MVMODE_SPLIT); |
|
|
|
if (vp56_rac_get_prob_branchy(c, vp8_mode_contexts[cnt[CNT_SPLITMV]][3])) { |
|
mb->mode = VP8_MVMODE_SPLIT; |
|
mb->mv = mb->bmv[decode_splitmvs(s, c, mb, layout, IS_VP8) - 1]; |
|
} else { |
|
mb->mv.y += read_mv_component(c, s->prob->mvc[0], IS_VP8); |
|
mb->mv.x += read_mv_component(c, s->prob->mvc[1], IS_VP8); |
|
mb->bmv[0] = mb->mv; |
|
} |
|
} else { |
|
clamp_mv(s, &mb->mv, &near_mv[CNT_NEAR]); |
|
mb->bmv[0] = mb->mv; |
|
} |
|
} else { |
|
clamp_mv(s, &mb->mv, &near_mv[CNT_NEAREST]); |
|
mb->bmv[0] = mb->mv; |
|
} |
|
} else { |
|
mb->mode = VP8_MVMODE_ZERO; |
|
AV_ZERO32(&mb->mv); |
|
mb->bmv[0] = mb->mv; |
|
} |
|
} |
|
|
|
static av_always_inline |
|
void decode_intra4x4_modes(VP8Context *s, VP56RangeCoder *c, VP8Macroblock *mb, |
|
int mb_x, int keyframe, int layout) |
|
{ |
|
uint8_t *intra4x4 = mb->intra4x4_pred_mode_mb; |
|
|
|
if (layout == 1) { |
|
VP8Macroblock *mb_top = mb - s->mb_width - 1; |
|
memcpy(mb->intra4x4_pred_mode_top, mb_top->intra4x4_pred_mode_top, 4); |
|
} |
|
if (keyframe) { |
|
int x, y; |
|
uint8_t *top; |
|
uint8_t *const left = s->intra4x4_pred_mode_left; |
|
if (layout == 1) |
|
top = mb->intra4x4_pred_mode_top; |
|
else |
|
top = s->intra4x4_pred_mode_top + 4 * mb_x; |
|
for (y = 0; y < 4; y++) { |
|
for (x = 0; x < 4; x++) { |
|
const uint8_t *ctx; |
|
ctx = vp8_pred4x4_prob_intra[top[x]][left[y]]; |
|
*intra4x4 = vp8_rac_get_tree(c, vp8_pred4x4_tree, ctx); |
|
left[y] = top[x] = *intra4x4; |
|
intra4x4++; |
|
} |
|
} |
|
} else { |
|
int i; |
|
for (i = 0; i < 16; i++) |
|
intra4x4[i] = vp8_rac_get_tree(c, vp8_pred4x4_tree, |
|
vp8_pred4x4_prob_inter); |
|
} |
|
} |
|
|
|
static av_always_inline |
|
void decode_mb_mode(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y, |
|
uint8_t *segment, uint8_t *ref, int layout, int is_vp7) |
|
{ |
|
VP56RangeCoder *c = &s->c; |
|
const char *vp7_feature_name[] = { "q-index", |
|
"lf-delta", |
|
"partial-golden-update", |
|
"blit-pitch" }; |
|
if (is_vp7) { |
|
int i; |
|
*segment = 0; |
|
for (i = 0; i < 4; i++) { |
|
if (s->feature_enabled[i]) { |
|
if (vp56_rac_get_prob(c, s->feature_present_prob[i])) { |
|
int index = vp8_rac_get_tree(c, vp7_feature_index_tree, |
|
s->feature_index_prob[i]); |
|
av_log(s->avctx, AV_LOG_WARNING, |
|
"Feature %s present in macroblock (value 0x%x)\n", |
|
vp7_feature_name[i], s->feature_value[i][index]); |
|
} |
|
} |
|
} |
|
} else if (s->segmentation.update_map) |
|
*segment = vp8_rac_get_tree(c, vp8_segmentid_tree, s->prob->segmentid); |
|
else if (s->segmentation.enabled) |
|
*segment = ref ? *ref : *segment; |
|
mb->segment = *segment; |
|
|
|
mb->skip = s->mbskip_enabled ? vp56_rac_get_prob(c, s->prob->mbskip) : 0; |
|
|
|
if (s->keyframe) { |
|
mb->mode = vp8_rac_get_tree(c, vp8_pred16x16_tree_intra, |
|
vp8_pred16x16_prob_intra); |
|
|
|
if (mb->mode == MODE_I4x4) { |
|
decode_intra4x4_modes(s, c, mb, mb_x, 1, layout); |
|
} else { |
|
const uint32_t modes = (is_vp7 ? vp7_pred4x4_mode |
|
: vp8_pred4x4_mode)[mb->mode] * 0x01010101u; |
|
if (s->mb_layout == 1) |
|
AV_WN32A(mb->intra4x4_pred_mode_top, modes); |
|
else |
|
AV_WN32A(s->intra4x4_pred_mode_top + 4 * mb_x, modes); |
|
AV_WN32A(s->intra4x4_pred_mode_left, modes); |
|
} |
|
|
|
mb->chroma_pred_mode = vp8_rac_get_tree(c, vp8_pred8x8c_tree, |
|
vp8_pred8x8c_prob_intra); |
|
mb->ref_frame = VP56_FRAME_CURRENT; |
|
} else if (vp56_rac_get_prob_branchy(c, s->prob->intra)) { |
|
// inter MB, 16.2 |
|
if (vp56_rac_get_prob_branchy(c, s->prob->last)) |
|
mb->ref_frame = |
|
(!is_vp7 && vp56_rac_get_prob(c, s->prob->golden)) ? VP56_FRAME_GOLDEN2 /* altref */ |
|
: VP56_FRAME_GOLDEN; |
|
else |
|
mb->ref_frame = VP56_FRAME_PREVIOUS; |
|
s->ref_count[mb->ref_frame - 1]++; |
|
|
|
// motion vectors, 16.3 |
|
if (is_vp7) |
|
vp7_decode_mvs(s, mb, mb_x, mb_y, layout); |
|
else |
|
vp8_decode_mvs(s, mb, mb_x, mb_y, layout); |
|
} else { |
|
// intra MB, 16.1 |
|
mb->mode = vp8_rac_get_tree(c, vp8_pred16x16_tree_inter, s->prob->pred16x16); |
|
|
|
if (mb->mode == MODE_I4x4) |
|
decode_intra4x4_modes(s, c, mb, mb_x, 0, layout); |
|
|
|
mb->chroma_pred_mode = vp8_rac_get_tree(c, vp8_pred8x8c_tree, |
|
s->prob->pred8x8c); |
|
mb->ref_frame = VP56_FRAME_CURRENT; |
|
mb->partitioning = VP8_SPLITMVMODE_NONE; |
|
AV_ZERO32(&mb->bmv[0]); |
|
} |
|
} |
|
|
|
/** |
|
* @param r arithmetic bitstream reader context |
|
* @param block destination for block coefficients |
|
* @param probs probabilities to use when reading trees from the bitstream |
|
* @param i initial coeff index, 0 unless a separate DC block is coded |
|
* @param qmul array holding the dc/ac dequant factor at position 0/1 |
|
* |
|
* @return 0 if no coeffs were decoded |
|
* otherwise, the index of the last coeff decoded plus one |
|
*/ |
|
static av_always_inline |
|
int decode_block_coeffs_internal(VP56RangeCoder *r, int16_t block[16], |
|
uint8_t probs[16][3][NUM_DCT_TOKENS - 1], |
|
int i, uint8_t *token_prob, int16_t qmul[2], |
|
const uint8_t scan[16], int vp7) |
|
{ |
|
VP56RangeCoder c = *r; |
|
goto skip_eob; |
|
do { |
|
int coeff; |
|
restart: |
|
if (!vp56_rac_get_prob_branchy(&c, token_prob[0])) // DCT_EOB |
|
break; |
|
|
|
skip_eob: |
|
if (!vp56_rac_get_prob_branchy(&c, token_prob[1])) { // DCT_0 |
|
if (++i == 16) |
|
break; // invalid input; blocks should end with EOB |
|
token_prob = probs[i][0]; |
|
if (vp7) |
|
goto restart; |
|
goto skip_eob; |
|
} |
|
|
|
if (!vp56_rac_get_prob_branchy(&c, token_prob[2])) { // DCT_1 |
|
coeff = 1; |
|
token_prob = probs[i + 1][1]; |
|
} else { |
|
if (!vp56_rac_get_prob_branchy(&c, token_prob[3])) { // DCT 2,3,4 |
|
coeff = vp56_rac_get_prob_branchy(&c, token_prob[4]); |
|
if (coeff) |
|
coeff += vp56_rac_get_prob(&c, token_prob[5]); |
|
coeff += 2; |
|
} else { |
|
// DCT_CAT* |
|
if (!vp56_rac_get_prob_branchy(&c, token_prob[6])) { |
|
if (!vp56_rac_get_prob_branchy(&c, token_prob[7])) { // DCT_CAT1 |
|
coeff = 5 + vp56_rac_get_prob(&c, vp8_dct_cat1_prob[0]); |
|
} else { // DCT_CAT2 |
|
coeff = 7; |
|
coeff += vp56_rac_get_prob(&c, vp8_dct_cat2_prob[0]) << 1; |
|
coeff += vp56_rac_get_prob(&c, vp8_dct_cat2_prob[1]); |
|
} |
|
} else { // DCT_CAT3 and up |
|
int a = vp56_rac_get_prob(&c, token_prob[8]); |
|
int b = vp56_rac_get_prob(&c, token_prob[9 + a]); |
|
int cat = (a << 1) + b; |
|
coeff = 3 + (8 << cat); |
|
coeff += vp8_rac_get_coeff(&c, ff_vp8_dct_cat_prob[cat]); |
|
} |
|
} |
|
token_prob = probs[i + 1][2]; |
|
} |
|
block[scan[i]] = (vp8_rac_get(&c) ? -coeff : coeff) * qmul[!!i]; |
|
} while (++i < 16); |
|
|
|
*r = c; |
|
return i; |
|
} |
|
|
|
static av_always_inline |
|
int inter_predict_dc(int16_t block[16], int16_t pred[2]) |
|
{ |
|
int16_t dc = block[0]; |
|
int ret = 0; |
|
|
|
if (pred[1] > 3) { |
|
dc += pred[0]; |
|
ret = 1; |
|
} |
|
|
|
if (!pred[0] | !dc | ((int32_t)pred[0] ^ (int32_t)dc) >> 31) { |
|
block[0] = pred[0] = dc; |
|
pred[1] = 0; |
|
} else { |
|
if (pred[0] == dc) |
|
pred[1]++; |
|
block[0] = pred[0] = dc; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static int vp7_decode_block_coeffs_internal(VP56RangeCoder *r, |
|
int16_t block[16], |
|
uint8_t probs[16][3][NUM_DCT_TOKENS - 1], |
|
int i, uint8_t *token_prob, |
|
int16_t qmul[2], |
|
const uint8_t scan[16]) |
|
{ |
|
return decode_block_coeffs_internal(r, block, probs, i, |
|
token_prob, qmul, scan, IS_VP7); |
|
} |
|
|
|
#ifndef vp8_decode_block_coeffs_internal |
|
static int vp8_decode_block_coeffs_internal(VP56RangeCoder *r, |
|
int16_t block[16], |
|
uint8_t probs[16][3][NUM_DCT_TOKENS - 1], |
|
int i, uint8_t *token_prob, |
|
int16_t qmul[2]) |
|
{ |
|
return decode_block_coeffs_internal(r, block, probs, i, |
|
token_prob, qmul, zigzag_scan, IS_VP8); |
|
} |
|
#endif |
|
|
|
/** |
|
* @param c arithmetic bitstream reader context |
|
* @param block destination for block coefficients |
|
* @param probs probabilities to use when reading trees from the bitstream |
|
* @param i initial coeff index, 0 unless a separate DC block is coded |
|
* @param zero_nhood the initial prediction context for number of surrounding |
|
* all-zero blocks (only left/top, so 0-2) |
|
* @param qmul array holding the dc/ac dequant factor at position 0/1 |
|
* |
|
* @return 0 if no coeffs were decoded |
|
* otherwise, the index of the last coeff decoded plus one |
|
*/ |
|
static av_always_inline |
|
int decode_block_coeffs(VP56RangeCoder *c, int16_t block[16], |
|
uint8_t probs[16][3][NUM_DCT_TOKENS - 1], |
|
int i, int zero_nhood, int16_t qmul[2], |
|
const uint8_t scan[16], int vp7) |
|
{ |
|
uint8_t *token_prob = probs[i][zero_nhood]; |
|
if (!vp56_rac_get_prob_branchy(c, token_prob[0])) // DCT_EOB |
|
return 0; |
|
return vp7 ? vp7_decode_block_coeffs_internal(c, block, probs, i, |
|
token_prob, qmul, scan) |
|
: vp8_decode_block_coeffs_internal(c, block, probs, i, |
|
token_prob, qmul); |
|
} |
|
|
|
static av_always_inline |
|
void decode_mb_coeffs(VP8Context *s, VP8ThreadData *td, VP56RangeCoder *c, |
|
VP8Macroblock *mb, uint8_t t_nnz[9], uint8_t l_nnz[9], |
|
int is_vp7) |
|
{ |
|
int i, x, y, luma_start = 0, luma_ctx = 3; |
|
int nnz_pred, nnz, nnz_total = 0; |
|
int segment = mb->segment; |
|
int block_dc = 0; |
|
|
|
if (mb->mode != MODE_I4x4 && (is_vp7 || mb->mode != VP8_MVMODE_SPLIT)) { |
|
nnz_pred = t_nnz[8] + l_nnz[8]; |
|
|
|
// decode DC values and do hadamard |
|
nnz = decode_block_coeffs(c, td->block_dc, s->prob->token[1], 0, |
|
nnz_pred, s->qmat[segment].luma_dc_qmul, |
|
zigzag_scan, is_vp7); |
|
l_nnz[8] = t_nnz[8] = !!nnz; |
|
|
|
if (is_vp7 && mb->mode > MODE_I4x4) { |
|
nnz |= inter_predict_dc(td->block_dc, |
|
s->inter_dc_pred[mb->ref_frame - 1]); |
|
} |
|
|
|
if (nnz) { |
|
nnz_total += nnz; |
|
block_dc = 1; |
|
if (nnz == 1) |
|
s->vp8dsp.vp8_luma_dc_wht_dc(td->block, td->block_dc); |
|
else |
|
s->vp8dsp.vp8_luma_dc_wht(td->block, td->block_dc); |
|
} |
|
luma_start = 1; |
|
luma_ctx = 0; |
|
} |
|
|
|
// luma blocks |
|
for (y = 0; y < 4; y++) |
|
for (x = 0; x < 4; x++) { |
|
nnz_pred = l_nnz[y] + t_nnz[x]; |
|
nnz = decode_block_coeffs(c, td->block[y][x], |
|
s->prob->token[luma_ctx], |
|
luma_start, nnz_pred, |
|
s->qmat[segment].luma_qmul, |
|
s->prob[0].scan, is_vp7); |
|
/* nnz+block_dc may be one more than the actual last index, |
|
* but we don't care */ |
|
td->non_zero_count_cache[y][x] = nnz + block_dc; |
|
t_nnz[x] = l_nnz[y] = !!nnz; |
|
nnz_total += nnz; |
|
} |
|
|
|
// chroma blocks |
|
// TODO: what to do about dimensions? 2nd dim for luma is x, |
|
// but for chroma it's (y<<1)|x |
|
for (i = 4; i < 6; i++) |
|
for (y = 0; y < 2; y++) |
|
for (x = 0; x < 2; x++) { |
|
nnz_pred = l_nnz[i + 2 * y] + t_nnz[i + 2 * x]; |
|
nnz = decode_block_coeffs(c, td->block[i][(y << 1) + x], |
|
s->prob->token[2], 0, nnz_pred, |
|
s->qmat[segment].chroma_qmul, |
|
s->prob[0].scan, is_vp7); |
|
td->non_zero_count_cache[i][(y << 1) + x] = nnz; |
|
t_nnz[i + 2 * x] = l_nnz[i + 2 * y] = !!nnz; |
|
nnz_total += nnz; |
|
} |
|
|
|
// if there were no coded coeffs despite the macroblock not being marked skip, |
|
// we MUST not do the inner loop filter and should not do IDCT |
|
// Since skip isn't used for bitstream prediction, just manually set it. |
|
if (!nnz_total) |
|
mb->skip = 1; |
|
} |
|
|
|
static av_always_inline |
|
void backup_mb_border(uint8_t *top_border, uint8_t *src_y, |
|
uint8_t *src_cb, uint8_t *src_cr, |
|
int linesize, int uvlinesize, int simple) |
|
{ |
|
AV_COPY128(top_border, src_y + 15 * linesize); |
|
if (!simple) { |
|
AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize); |
|
AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize); |
|
} |
|
} |
|
|
|
static av_always_inline |
|
void xchg_mb_border(uint8_t *top_border, uint8_t *src_y, uint8_t *src_cb, |
|
uint8_t *src_cr, int linesize, int uvlinesize, int mb_x, |
|
int mb_y, int mb_width, int simple, int xchg) |
|
{ |
|
uint8_t *top_border_m1 = top_border - 32; // for TL prediction |
|
src_y -= linesize; |
|
src_cb -= uvlinesize; |
|
src_cr -= uvlinesize; |
|
|
|
#define XCHG(a, b, xchg) \ |
|
do { \ |
|
if (xchg) \ |
|
AV_SWAP64(b, a); \ |
|
else \ |
|
AV_COPY64(b, a); \ |
|
} while (0) |
|
|
|
XCHG(top_border_m1 + 8, src_y - 8, xchg); |
|
XCHG(top_border, src_y, xchg); |
|
XCHG(top_border + 8, src_y + 8, 1); |
|
if (mb_x < mb_width - 1) |
|
XCHG(top_border + 32, src_y + 16, 1); |
|
|
|
// only copy chroma for normal loop filter |
|
// or to initialize the top row to 127 |
|
if (!simple || !mb_y) { |
|
XCHG(top_border_m1 + 16, src_cb - 8, xchg); |
|
XCHG(top_border_m1 + 24, src_cr - 8, xchg); |
|
XCHG(top_border + 16, src_cb, 1); |
|
XCHG(top_border + 24, src_cr, 1); |
|
} |
|
} |
|
|
|
static av_always_inline |
|
int check_dc_pred8x8_mode(int mode, int mb_x, int mb_y) |
|
{ |
|
if (!mb_x) |
|
return mb_y ? TOP_DC_PRED8x8 : DC_128_PRED8x8; |
|
else |
|
return mb_y ? mode : LEFT_DC_PRED8x8; |
|
} |
|
|
|
static av_always_inline |
|
int check_tm_pred8x8_mode(int mode, int mb_x, int mb_y, int vp7) |
|
{ |
|
if (!mb_x) |
|
return mb_y ? VERT_PRED8x8 : (vp7 ? DC_128_PRED8x8 : DC_129_PRED8x8); |
|
else |
|
return mb_y ? mode : HOR_PRED8x8; |
|
} |
|
|
|
static av_always_inline |
|
int check_intra_pred8x8_mode_emuedge(int mode, int mb_x, int mb_y, int vp7) |
|
{ |
|
switch (mode) { |
|
case DC_PRED8x8: |
|
return check_dc_pred8x8_mode(mode, mb_x, mb_y); |
|
case VERT_PRED8x8: |
|
return !mb_y ? (vp7 ? DC_128_PRED8x8 : DC_127_PRED8x8) : mode; |
|
case HOR_PRED8x8: |
|
return !mb_x ? (vp7 ? DC_128_PRED8x8 : DC_129_PRED8x8) : mode; |
|
case PLANE_PRED8x8: /* TM */ |
|
return check_tm_pred8x8_mode(mode, mb_x, mb_y, vp7); |
|
} |
|
return mode; |
|
} |
|
|
|
static av_always_inline |
|
int check_tm_pred4x4_mode(int mode, int mb_x, int mb_y, int vp7) |
|
{ |
|
if (!mb_x) { |
|
return mb_y ? VERT_VP8_PRED : (vp7 ? DC_128_PRED : DC_129_PRED); |
|
} else { |
|
return mb_y ? mode : HOR_VP8_PRED; |
|
} |
|
} |
|
|
|
static av_always_inline |
|
int check_intra_pred4x4_mode_emuedge(int mode, int mb_x, int mb_y, |
|
int *copy_buf, int vp7) |
|
{ |
|
switch (mode) { |
|
case VERT_PRED: |
|
if (!mb_x && mb_y) { |
|
*copy_buf = 1; |
|
return mode; |
|
} |
|
/* fall-through */ |
|
case DIAG_DOWN_LEFT_PRED: |
|
case VERT_LEFT_PRED: |
|
return !mb_y ? (vp7 ? DC_128_PRED : DC_127_PRED) : mode; |
|
case HOR_PRED: |
|
if (!mb_y) { |
|
*copy_buf = 1; |
|
return mode; |
|
} |
|
/* fall-through */ |
|
case HOR_UP_PRED: |
|
return !mb_x ? (vp7 ? DC_128_PRED : DC_129_PRED) : mode; |
|
case TM_VP8_PRED: |
|
return check_tm_pred4x4_mode(mode, mb_x, mb_y, vp7); |
|
case DC_PRED: /* 4x4 DC doesn't use the same "H.264-style" exceptions |
|
* as 16x16/8x8 DC */ |
|
case DIAG_DOWN_RIGHT_PRED: |
|
case VERT_RIGHT_PRED: |
|
case HOR_DOWN_PRED: |
|
if (!mb_y || !mb_x) |
|
*copy_buf = 1; |
|
return mode; |
|
} |
|
return mode; |
|
} |
|
|
|
static av_always_inline |
|
void intra_predict(VP8Context *s, VP8ThreadData *td, uint8_t *dst[3], |
|
VP8Macroblock *mb, int mb_x, int mb_y, int is_vp7) |
|
{ |
|
int x, y, mode, nnz; |
|
uint32_t tr; |
|
|
|
/* for the first row, we need to run xchg_mb_border to init the top edge |
|
* to 127 otherwise, skip it if we aren't going to deblock */ |
|
if (mb_y && (s->deblock_filter || !mb_y) && td->thread_nr == 0) |
|
xchg_mb_border(s->top_border[mb_x + 1], dst[0], dst[1], dst[2], |
|
s->linesize, s->uvlinesize, mb_x, mb_y, s->mb_width, |
|
s->filter.simple, 1); |
|
|
|
if (mb->mode < MODE_I4x4) { |
|
mode = check_intra_pred8x8_mode_emuedge(mb->mode, mb_x, mb_y, is_vp7); |
|
s->hpc.pred16x16[mode](dst[0], s->linesize); |
|
} else { |
|
uint8_t *ptr = dst[0]; |
|
uint8_t *intra4x4 = mb->intra4x4_pred_mode_mb; |
|
const uint8_t lo = is_vp7 ? 128 : 127; |
|
const uint8_t hi = is_vp7 ? 128 : 129; |
|
uint8_t tr_top[4] = { lo, lo, lo, lo }; |
|
|
|
// all blocks on the right edge of the macroblock use bottom edge |
|
// the top macroblock for their topright edge |
|
uint8_t *tr_right = ptr - s->linesize + 16; |
|
|
|
// if we're on the right edge of the frame, said edge is extended |
|
// from the top macroblock |
|
if (mb_y && mb_x == s->mb_width - 1) { |
|
tr = tr_right[-1] * 0x01010101u; |
|
tr_right = (uint8_t *) &tr; |
|
} |
|
|
|
if (mb->skip) |
|
AV_ZERO128(td->non_zero_count_cache); |
|
|
|
for (y = 0; y < 4; y++) { |
|
uint8_t *topright = ptr + 4 - s->linesize; |
|
for (x = 0; x < 4; x++) { |
|
int copy = 0, linesize = s->linesize; |
|
uint8_t *dst = ptr + 4 * x; |
|
DECLARE_ALIGNED(4, uint8_t, copy_dst)[5 * 8]; |
|
|
|
if ((y == 0 || x == 3) && mb_y == 0) { |
|
topright = tr_top; |
|
} else if (x == 3) |
|
topright = tr_right; |
|
|
|
mode = check_intra_pred4x4_mode_emuedge(intra4x4[x], mb_x + x, |
|
mb_y + y, ©, is_vp7); |
|
if (copy) { |
|
dst = copy_dst + 12; |
|
linesize = 8; |
|
if (!(mb_y + y)) { |
|
copy_dst[3] = lo; |
|
AV_WN32A(copy_dst + 4, lo * 0x01010101U); |
|
} else { |
|
AV_COPY32(copy_dst + 4, ptr + 4 * x - s->linesize); |
|
if (!(mb_x + x)) { |
|
copy_dst[3] = hi; |
|
} else { |
|
copy_dst[3] = ptr[4 * x - s->linesize - 1]; |
|
} |
|
} |
|
if (!(mb_x + x)) { |
|
copy_dst[11] = |
|
copy_dst[19] = |
|
copy_dst[27] = |
|
copy_dst[35] = hi; |
|
} else { |
|
copy_dst[11] = ptr[4 * x - 1]; |
|
copy_dst[19] = ptr[4 * x + s->linesize - 1]; |
|
copy_dst[27] = ptr[4 * x + s->linesize * 2 - 1]; |
|
copy_dst[35] = ptr[4 * x + s->linesize * 3 - 1]; |
|
} |
|
} |
|
s->hpc.pred4x4[mode](dst, topright, linesize); |
|
if (copy) { |
|
AV_COPY32(ptr + 4 * x, copy_dst + 12); |
|
AV_COPY32(ptr + 4 * x + s->linesize, copy_dst + 20); |
|
AV_COPY32(ptr + 4 * x + s->linesize * 2, copy_dst + 28); |
|
AV_COPY32(ptr + 4 * x + s->linesize * 3, copy_dst + 36); |
|
} |
|
|
|
nnz = td->non_zero_count_cache[y][x]; |
|
if (nnz) { |
|
if (nnz == 1) |
|
s->vp8dsp.vp8_idct_dc_add(ptr + 4 * x, |
|
td->block[y][x], s->linesize); |
|
else |
|
s->vp8dsp.vp8_idct_add(ptr + 4 * x, |
|
td->block[y][x], s->linesize); |
|
} |
|
topright += 4; |
|
} |
|
|
|
ptr += 4 * s->linesize; |
|
intra4x4 += 4; |
|
} |
|
} |
|
|
|
mode = check_intra_pred8x8_mode_emuedge(mb->chroma_pred_mode, |
|
mb_x, mb_y, is_vp7); |
|
s->hpc.pred8x8[mode](dst[1], s->uvlinesize); |
|
s->hpc.pred8x8[mode](dst[2], s->uvlinesize); |
|
|
|
if (mb_y && (s->deblock_filter || !mb_y) && td->thread_nr == 0) |
|
xchg_mb_border(s->top_border[mb_x + 1], dst[0], dst[1], dst[2], |
|
s->linesize, s->uvlinesize, mb_x, mb_y, s->mb_width, |
|
s->filter.simple, 0); |
|
} |
|
|
|
static const uint8_t subpel_idx[3][8] = { |
|
{ 0, 1, 2, 1, 2, 1, 2, 1 }, // nr. of left extra pixels, |
|
// also function pointer index |
|
{ 0, 3, 5, 3, 5, 3, 5, 3 }, // nr. of extra pixels required |
|
{ 0, 2, 3, 2, 3, 2, 3, 2 }, // nr. of right extra pixels |
|
}; |
|
|
|
/** |
|
* luma MC function |
|
* |
|
* @param s VP8 decoding context |
|
* @param dst target buffer for block data at block position |
|
* @param ref reference picture buffer at origin (0, 0) |
|
* @param mv motion vector (relative to block position) to get pixel data from |
|
* @param x_off horizontal position of block from origin (0, 0) |
|
* @param y_off vertical position of block from origin (0, 0) |
|
* @param block_w width of block (16, 8 or 4) |
|
* @param block_h height of block (always same as block_w) |
|
* @param width width of src/dst plane data |
|
* @param height height of src/dst plane data |
|
* @param linesize size of a single line of plane data, including padding |
|
* @param mc_func motion compensation function pointers (bilinear or sixtap MC) |
|
*/ |
|
static av_always_inline |
|
void vp8_mc_luma(VP8Context *s, VP8ThreadData *td, uint8_t *dst, |
|
ThreadFrame *ref, const VP56mv *mv, |
|
int x_off, int y_off, int block_w, int block_h, |
|
int width, int height, ptrdiff_t linesize, |
|
vp8_mc_func mc_func[3][3]) |
|
{ |
|
uint8_t *src = ref->f->data[0]; |
|
|
|
if (AV_RN32A(mv)) { |
|
int src_linesize = linesize; |
|
|
|
int mx = (mv->x << 1) & 7, mx_idx = subpel_idx[0][mx]; |
|
int my = (mv->y << 1) & 7, my_idx = subpel_idx[0][my]; |
|
|
|
x_off += mv->x >> 2; |
|
y_off += mv->y >> 2; |
|
|
|
// edge emulation |
|
ff_thread_await_progress(ref, (3 + y_off + block_h + subpel_idx[2][my]) >> 4, 0); |
|
src += y_off * linesize + x_off; |
|
if (x_off < mx_idx || x_off >= width - block_w - subpel_idx[2][mx] || |
|
y_off < my_idx || y_off >= height - block_h - subpel_idx[2][my]) { |
|
s->vdsp.emulated_edge_mc(td->edge_emu_buffer, |
|
src - my_idx * linesize - mx_idx, |
|
EDGE_EMU_LINESIZE, linesize, |
|
block_w + subpel_idx[1][mx], |
|
block_h + subpel_idx[1][my], |
|
x_off - mx_idx, y_off - my_idx, |
|
width, height); |
|
src = td->edge_emu_buffer + mx_idx + EDGE_EMU_LINESIZE * my_idx; |
|
src_linesize = EDGE_EMU_LINESIZE; |
|
} |
|
mc_func[my_idx][mx_idx](dst, linesize, src, src_linesize, block_h, mx, my); |
|
} else { |
|
ff_thread_await_progress(ref, (3 + y_off + block_h) >> 4, 0); |
|
mc_func[0][0](dst, linesize, src + y_off * linesize + x_off, |
|
linesize, block_h, 0, 0); |
|
} |
|
} |
|
|
|
/** |
|
* chroma MC function |
|
* |
|
* @param s VP8 decoding context |
|
* @param dst1 target buffer for block data at block position (U plane) |
|
* @param dst2 target buffer for block data at block position (V plane) |
|
* @param ref reference picture buffer at origin (0, 0) |
|
* @param mv motion vector (relative to block position) to get pixel data from |
|
* @param x_off horizontal position of block from origin (0, 0) |
|
* @param y_off vertical position of block from origin (0, 0) |
|
* @param block_w width of block (16, 8 or 4) |
|
* @param block_h height of block (always same as block_w) |
|
* @param width width of src/dst plane data |
|
* @param height height of src/dst plane data |
|
* @param linesize size of a single line of plane data, including padding |
|
* @param mc_func motion compensation function pointers (bilinear or sixtap MC) |
|
*/ |
|
static av_always_inline |
|
void vp8_mc_chroma(VP8Context *s, VP8ThreadData *td, uint8_t *dst1, |
|
uint8_t *dst2, ThreadFrame *ref, const VP56mv *mv, |
|
int x_off, int y_off, int block_w, int block_h, |
|
int width, int height, ptrdiff_t linesize, |
|
vp8_mc_func mc_func[3][3]) |
|
{ |
|
uint8_t *src1 = ref->f->data[1], *src2 = ref->f->data[2]; |
|
|
|
if (AV_RN32A(mv)) { |
|
int mx = mv->x & 7, mx_idx = subpel_idx[0][mx]; |
|
int my = mv->y & 7, my_idx = subpel_idx[0][my]; |
|
|
|
x_off += mv->x >> 3; |
|
y_off += mv->y >> 3; |
|
|
|
// edge emulation |
|
src1 += y_off * linesize + x_off; |
|
src2 += y_off * linesize + x_off; |
|
ff_thread_await_progress(ref, (3 + y_off + block_h + subpel_idx[2][my]) >> 3, 0); |
|
if (x_off < mx_idx || x_off >= width - block_w - subpel_idx[2][mx] || |
|
y_off < my_idx || y_off >= height - block_h - subpel_idx[2][my]) { |
|
s->vdsp.emulated_edge_mc(td->edge_emu_buffer, |
|
src1 - my_idx * linesize - mx_idx, |
|
EDGE_EMU_LINESIZE, linesize, |
|
block_w + subpel_idx[1][mx], block_h + subpel_idx[1][my], |
|
x_off - mx_idx, y_off - my_idx, width, height); |
|
src1 = td->edge_emu_buffer + mx_idx + EDGE_EMU_LINESIZE * my_idx; |
|
mc_func[my_idx][mx_idx](dst1, linesize, src1, EDGE_EMU_LINESIZE, block_h, mx, my); |
|
|
|
s->vdsp.emulated_edge_mc(td->edge_emu_buffer, |
|
src2 - my_idx * linesize - mx_idx, |
|
EDGE_EMU_LINESIZE, linesize, |
|
block_w + subpel_idx[1][mx], block_h + subpel_idx[1][my], |
|
x_off - mx_idx, y_off - my_idx, width, height); |
|
src2 = td->edge_emu_buffer + mx_idx + EDGE_EMU_LINESIZE * my_idx; |
|
mc_func[my_idx][mx_idx](dst2, linesize, src2, EDGE_EMU_LINESIZE, block_h, mx, my); |
|
} else { |
|
mc_func[my_idx][mx_idx](dst1, linesize, src1, linesize, block_h, mx, my); |
|
mc_func[my_idx][mx_idx](dst2, linesize, src2, linesize, block_h, mx, my); |
|
} |
|
} else { |
|
ff_thread_await_progress(ref, (3 + y_off + block_h) >> 3, 0); |
|
mc_func[0][0](dst1, linesize, src1 + y_off * linesize + x_off, linesize, block_h, 0, 0); |
|
mc_func[0][0](dst2, linesize, src2 + y_off * linesize + x_off, linesize, block_h, 0, 0); |
|
} |
|
} |
|
|
|
static av_always_inline |
|
void vp8_mc_part(VP8Context *s, VP8ThreadData *td, uint8_t *dst[3], |
|
ThreadFrame *ref_frame, int x_off, int y_off, |
|
int bx_off, int by_off, int block_w, int block_h, |
|
int width, int height, VP56mv *mv) |
|
{ |
|
VP56mv uvmv = *mv; |
|
|
|
/* Y */ |
|
vp8_mc_luma(s, td, dst[0] + by_off * s->linesize + bx_off, |
|
ref_frame, mv, x_off + bx_off, y_off + by_off, |
|
block_w, block_h, width, height, s->linesize, |
|
s->put_pixels_tab[block_w == 8]); |
|
|
|
/* U/V */ |
|
if (s->profile == 3) { |
|
/* this block only applies VP8; it is safe to check |
|
* only the profile, as VP7 profile <= 1 */ |
|
uvmv.x &= ~7; |
|
uvmv.y &= ~7; |
|
} |
|
x_off >>= 1; |
|
y_off >>= 1; |
|
bx_off >>= 1; |
|
by_off >>= 1; |
|
width >>= 1; |
|
height >>= 1; |
|
block_w >>= 1; |
|
block_h >>= 1; |
|
vp8_mc_chroma(s, td, dst[1] + by_off * s->uvlinesize + bx_off, |
|
dst[2] + by_off * s->uvlinesize + bx_off, ref_frame, |
|
&uvmv, x_off + bx_off, y_off + by_off, |
|
block_w, block_h, width, height, s->uvlinesize, |
|
s->put_pixels_tab[1 + (block_w == 4)]); |
|
} |
|
|
|
/* Fetch pixels for estimated mv 4 macroblocks ahead. |
|
* Optimized for 64-byte cache lines. Inspired by ffh264 prefetch_motion. */ |
|
static av_always_inline |
|
void prefetch_motion(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y, |
|
int mb_xy, int ref) |
|
{ |
|
/* Don't prefetch refs that haven't been used very often this frame. */ |
|
if (s->ref_count[ref - 1] > (mb_xy >> 5)) { |
|
int x_off = mb_x << 4, y_off = mb_y << 4; |
|
int mx = (mb->mv.x >> 2) + x_off + 8; |
|
int my = (mb->mv.y >> 2) + y_off; |
|
uint8_t **src = s->framep[ref]->tf.f->data; |
|
int off = mx + (my + (mb_x & 3) * 4) * s->linesize + 64; |
|
/* For threading, a ff_thread_await_progress here might be useful, but |
|
* it actually slows down the decoder. Since a bad prefetch doesn't |
|
* generate bad decoder output, we don't run it here. */ |
|
s->vdsp.prefetch(src[0] + off, s->linesize, 4); |
|
off = (mx >> 1) + ((my >> 1) + (mb_x & 7)) * s->uvlinesize + 64; |
|
s->vdsp.prefetch(src[1] + off, src[2] - src[1], 2); |
|
} |
|
} |
|
|
|
/** |
|
* Apply motion vectors to prediction buffer, chapter 18. |
|
*/ |
|
static av_always_inline |
|
void inter_predict(VP8Context *s, VP8ThreadData *td, uint8_t *dst[3], |
|
VP8Macroblock *mb, int mb_x, int mb_y) |
|
{ |
|
int x_off = mb_x << 4, y_off = mb_y << 4; |
|
int width = 16 * s->mb_width, height = 16 * s->mb_height; |
|
ThreadFrame *ref = &s->framep[mb->ref_frame]->tf; |
|
VP56mv *bmv = mb->bmv; |
|
|
|
switch (mb->partitioning) { |
|
case VP8_SPLITMVMODE_NONE: |
|
vp8_mc_part(s, td, dst, ref, x_off, y_off, |
|
0, 0, 16, 16, width, height, &mb->mv); |
|
break; |
|
case VP8_SPLITMVMODE_4x4: { |
|
int x, y; |
|
VP56mv uvmv; |
|
|
|
/* Y */ |
|
for (y = 0; y < 4; y++) { |
|
for (x = 0; x < 4; x++) { |
|
vp8_mc_luma(s, td, dst[0] + 4 * y * s->linesize + x * 4, |
|
ref, &bmv[4 * y + x], |
|
4 * x + x_off, 4 * y + y_off, 4, 4, |
|
width, height, s->linesize, |
|
s->put_pixels_tab[2]); |
|
} |
|
} |
|
|
|
/* U/V */ |
|
x_off >>= 1; |
|
y_off >>= 1; |
|
width >>= 1; |
|
height >>= 1; |
|
for (y = 0; y < 2; y++) { |
|
for (x = 0; x < 2; x++) { |
|
uvmv.x = mb->bmv[2 * y * 4 + 2 * x ].x + |
|
mb->bmv[2 * y * 4 + 2 * x + 1].x + |
|
mb->bmv[(2 * y + 1) * 4 + 2 * x ].x + |
|
mb->bmv[(2 * y + 1) * 4 + 2 * x + 1].x; |
|
uvmv.y = mb->bmv[2 * y * 4 + 2 * x ].y + |
|
mb->bmv[2 * y * 4 + 2 * x + 1].y + |
|
mb->bmv[(2 * y + 1) * 4 + 2 * x ].y + |
|
mb->bmv[(2 * y + 1) * 4 + 2 * x + 1].y; |
|
uvmv.x = (uvmv.x + 2 + FF_SIGNBIT(uvmv.x)) >> 2; |
|
uvmv.y = (uvmv.y + 2 + FF_SIGNBIT(uvmv.y)) >> 2; |
|
if (s->profile == 3) { |
|
uvmv.x &= ~7; |
|
uvmv.y &= ~7; |
|
} |
|
vp8_mc_chroma(s, td, dst[1] + 4 * y * s->uvlinesize + x * 4, |
|
dst[2] + 4 * y * s->uvlinesize + x * 4, ref, |
|
&uvmv, 4 * x + x_off, 4 * y + y_off, 4, 4, |
|
width, height, s->uvlinesize, |
|
s->put_pixels_tab[2]); |
|
} |
|
} |
|
break; |
|
} |
|
case VP8_SPLITMVMODE_16x8: |
|
vp8_mc_part(s, td, dst, ref, x_off, y_off, |
|
0, 0, 16, 8, width, height, &bmv[0]); |
|
vp8_mc_part(s, td, dst, ref, x_off, y_off, |
|
0, 8, 16, 8, width, height, &bmv[1]); |
|
break; |
|
case VP8_SPLITMVMODE_8x16: |
|
vp8_mc_part(s, td, dst, ref, x_off, y_off, |
|
0, 0, 8, 16, width, height, &bmv[0]); |
|
vp8_mc_part(s, td, dst, ref, x_off, y_off, |
|
8, 0, 8, 16, width, height, &bmv[1]); |
|
break; |
|
case VP8_SPLITMVMODE_8x8: |
|
vp8_mc_part(s, td, dst, ref, x_off, y_off, |
|
0, 0, 8, 8, width, height, &bmv[0]); |
|
vp8_mc_part(s, td, dst, ref, x_off, y_off, |
|
8, 0, 8, 8, width, height, &bmv[1]); |
|
vp8_mc_part(s, td, dst, ref, x_off, y_off, |
|
0, 8, 8, 8, width, height, &bmv[2]); |
|
vp8_mc_part(s, td, dst, ref, x_off, y_off, |
|
8, 8, 8, 8, width, height, &bmv[3]); |
|
break; |
|
} |
|
} |
|
|
|
static av_always_inline |
|
void idct_mb(VP8Context *s, VP8ThreadData *td, uint8_t *dst[3], VP8Macroblock *mb) |
|
{ |
|
int x, y, ch; |
|
|
|
if (mb->mode != MODE_I4x4) { |
|
uint8_t *y_dst = dst[0]; |
|
for (y = 0; y < 4; y++) { |
|
uint32_t nnz4 = AV_RL32(td->non_zero_count_cache[y]); |
|
if (nnz4) { |
|
if (nnz4 & ~0x01010101) { |
|
for (x = 0; x < 4; x++) { |
|
if ((uint8_t) nnz4 == 1) |
|
s->vp8dsp.vp8_idct_dc_add(y_dst + 4 * x, |
|
td->block[y][x], |
|
s->linesize); |
|
else if ((uint8_t) nnz4 > 1) |
|
s->vp8dsp.vp8_idct_add(y_dst + 4 * x, |
|
td->block[y][x], |
|
s->linesize); |
|
nnz4 >>= 8; |
|
if (!nnz4) |
|
break; |
|
} |
|
} else { |
|
s->vp8dsp.vp8_idct_dc_add4y(y_dst, td->block[y], s->linesize); |
|
} |
|
} |
|
y_dst += 4 * s->linesize; |
|
} |
|
} |
|
|
|
for (ch = 0; ch < 2; ch++) { |
|
uint32_t nnz4 = AV_RL32(td->non_zero_count_cache[4 + ch]); |
|
if (nnz4) { |
|
uint8_t *ch_dst = dst[1 + ch]; |
|
if (nnz4 & ~0x01010101) { |
|
for (y = 0; y < 2; y++) { |
|
for (x = 0; x < 2; x++) { |
|
if ((uint8_t) nnz4 == 1) |
|
s->vp8dsp.vp8_idct_dc_add(ch_dst + 4 * x, |
|
td->block[4 + ch][(y << 1) + x], |
|
s->uvlinesize); |
|
else if ((uint8_t) nnz4 > 1) |
|
s->vp8dsp.vp8_idct_add(ch_dst + 4 * x, |
|
td->block[4 + ch][(y << 1) + x], |
|
s->uvlinesize); |
|
nnz4 >>= 8; |
|
if (!nnz4) |
|
goto chroma_idct_end; |
|
} |
|
ch_dst += 4 * s->uvlinesize; |
|
} |
|
} else { |
|
s->vp8dsp.vp8_idct_dc_add4uv(ch_dst, td->block[4 + ch], s->uvlinesize); |
|
} |
|
} |
|
chroma_idct_end: |
|
; |
|
} |
|
} |
|
|
|
static av_always_inline |
|
void filter_level_for_mb(VP8Context *s, VP8Macroblock *mb, |
|
VP8FilterStrength *f, int is_vp7) |
|
{ |
|
int interior_limit, filter_level; |
|
|
|
if (s->segmentation.enabled) { |
|
filter_level = s->segmentation.filter_level[mb->segment]; |
|
if (!s->segmentation.absolute_vals) |
|
filter_level += s->filter.level; |
|
} else |
|
filter_level = s->filter.level; |
|
|
|
if (s->lf_delta.enabled) { |
|
filter_level += s->lf_delta.ref[mb->ref_frame]; |
|
filter_level += s->lf_delta.mode[mb->mode]; |
|
} |
|
|
|
filter_level = av_clip_uintp2(filter_level, 6); |
|
|
|
interior_limit = filter_level; |
|
if (s->filter.sharpness) { |
|
interior_limit >>= (s->filter.sharpness + 3) >> 2; |
|
interior_limit = FFMIN(interior_limit, 9 - s->filter.sharpness); |
|
} |
|
interior_limit = FFMAX(interior_limit, 1); |
|
|
|
f->filter_level = filter_level; |
|
f->inner_limit = interior_limit; |
|
f->inner_filter = is_vp7 || !mb->skip || mb->mode == MODE_I4x4 || |
|
mb->mode == VP8_MVMODE_SPLIT; |
|
} |
|
|
|
static av_always_inline |
|
void filter_mb(VP8Context *s, uint8_t *dst[3], VP8FilterStrength *f, |
|
int mb_x, int mb_y, int is_vp7) |
|
{ |
|
int mbedge_lim, bedge_lim_y, bedge_lim_uv, hev_thresh; |
|
int filter_level = f->filter_level; |
|
int inner_limit = f->inner_limit; |
|
int inner_filter = f->inner_filter; |
|
int linesize = s->linesize; |
|
int uvlinesize = s->uvlinesize; |
|
static const uint8_t hev_thresh_lut[2][64] = { |
|
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, |
|
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
|
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
|
3, 3, 3, 3 }, |
|
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, |
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
|
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
|
2, 2, 2, 2 } |
|
}; |
|
|
|
if (!filter_level) |
|
return; |
|
|
|
if (is_vp7) { |
|
bedge_lim_y = filter_level; |
|
bedge_lim_uv = filter_level * 2; |
|
mbedge_lim = filter_level + 2; |
|
} else { |
|
bedge_lim_y = |
|
bedge_lim_uv = filter_level * 2 + inner_limit; |
|
mbedge_lim = bedge_lim_y + 4; |
|
} |
|
|
|
hev_thresh = hev_thresh_lut[s->keyframe][filter_level]; |
|
|
|
if (mb_x) { |
|
s->vp8dsp.vp8_h_loop_filter16y(dst[0], linesize, |
|
mbedge_lim, inner_limit, hev_thresh); |
|
s->vp8dsp.vp8_h_loop_filter8uv(dst[1], dst[2], uvlinesize, |
|
mbedge_lim, inner_limit, hev_thresh); |
|
} |
|
|
|
#define H_LOOP_FILTER_16Y_INNER(cond) \ |
|
if (cond && inner_filter) { \ |
|
s->vp8dsp.vp8_h_loop_filter16y_inner(dst[0] + 4, linesize, \ |
|
bedge_lim_y, inner_limit, \ |
|
hev_thresh); \ |
|
s->vp8dsp.vp8_h_loop_filter16y_inner(dst[0] + 8, linesize, \ |
|
bedge_lim_y, inner_limit, \ |
|
hev_thresh); \ |
|
s->vp8dsp.vp8_h_loop_filter16y_inner(dst[0] + 12, linesize, \ |
|
bedge_lim_y, inner_limit, \ |
|
hev_thresh); \ |
|
s->vp8dsp.vp8_h_loop_filter8uv_inner(dst[1] + 4, dst[2] + 4, \ |
|
uvlinesize, bedge_lim_uv, \ |
|
inner_limit, hev_thresh); \ |
|
} |
|
|
|
H_LOOP_FILTER_16Y_INNER(!is_vp7) |
|
|
|
if (mb_y) { |
|
s->vp8dsp.vp8_v_loop_filter16y(dst[0], linesize, |
|
mbedge_lim, inner_limit, hev_thresh); |
|
s->vp8dsp.vp8_v_loop_filter8uv(dst[1], dst[2], uvlinesize, |
|
mbedge_lim, inner_limit, hev_thresh); |
|
} |
|
|
|
if (inner_filter) { |
|
s->vp8dsp.vp8_v_loop_filter16y_inner(dst[0] + 4 * linesize, |
|
linesize, bedge_lim_y, |
|
inner_limit, hev_thresh); |
|
s->vp8dsp.vp8_v_loop_filter16y_inner(dst[0] + 8 * linesize, |
|
linesize, bedge_lim_y, |
|
inner_limit, hev_thresh); |
|
s->vp8dsp.vp8_v_loop_filter16y_inner(dst[0] + 12 * linesize, |
|
linesize, bedge_lim_y, |
|
inner_limit, hev_thresh); |
|
s->vp8dsp.vp8_v_loop_filter8uv_inner(dst[1] + 4 * uvlinesize, |
|
dst[2] + 4 * uvlinesize, |
|
uvlinesize, bedge_lim_uv, |
|
inner_limit, hev_thresh); |
|
} |
|
|
|
H_LOOP_FILTER_16Y_INNER(is_vp7) |
|
} |
|
|
|
static av_always_inline |
|
void filter_mb_simple(VP8Context *s, uint8_t *dst, VP8FilterStrength *f, |
|
int mb_x, int mb_y) |
|
{ |
|
int mbedge_lim, bedge_lim; |
|
int filter_level = f->filter_level; |
|
int inner_limit = f->inner_limit; |
|
int inner_filter = f->inner_filter; |
|
int linesize = s->linesize; |
|
|
|
if (!filter_level) |
|
return; |
|
|
|
bedge_lim = 2 * filter_level + inner_limit; |
|
mbedge_lim = bedge_lim + 4; |
|
|
|
if (mb_x) |
|
s->vp8dsp.vp8_h_loop_filter_simple(dst, linesize, mbedge_lim); |
|
if (inner_filter) { |
|
s->vp8dsp.vp8_h_loop_filter_simple(dst + 4, linesize, bedge_lim); |
|
s->vp8dsp.vp8_h_loop_filter_simple(dst + 8, linesize, bedge_lim); |
|
s->vp8dsp.vp8_h_loop_filter_simple(dst + 12, linesize, bedge_lim); |
|
} |
|
|
|
if (mb_y) |
|
s->vp8dsp.vp8_v_loop_filter_simple(dst, linesize, mbedge_lim); |
|
if (inner_filter) { |
|
s->vp8dsp.vp8_v_loop_filter_simple(dst + 4 * linesize, linesize, bedge_lim); |
|
s->vp8dsp.vp8_v_loop_filter_simple(dst + 8 * linesize, linesize, bedge_lim); |
|
s->vp8dsp.vp8_v_loop_filter_simple(dst + 12 * linesize, linesize, bedge_lim); |
|
} |
|
} |
|
|
|
#define MARGIN (16 << 2) |
|
static av_always_inline |
|
void vp78_decode_mv_mb_modes(AVCodecContext *avctx, VP8Frame *curframe, |
|
VP8Frame *prev_frame, int is_vp7) |
|
{ |
|
VP8Context *s = avctx->priv_data; |
|
int mb_x, mb_y; |
|
|
|
s->mv_min.y = -MARGIN; |
|
s->mv_max.y = ((s->mb_height - 1) << 6) + MARGIN; |
|
for (mb_y = 0; mb_y < s->mb_height; mb_y++) { |
|
VP8Macroblock *mb = s->macroblocks_base + |
|
((s->mb_width + 1) * (mb_y + 1) + 1); |
|
int mb_xy = mb_y * s->mb_width; |
|
|
|
AV_WN32A(s->intra4x4_pred_mode_left, DC_PRED * 0x01010101); |
|
|
|
s->mv_min.x = -MARGIN; |
|
s->mv_max.x = ((s->mb_width - 1) << 6) + MARGIN; |
|
for (mb_x = 0; mb_x < s->mb_width; mb_x++, mb_xy++, mb++) { |
|
if (mb_y == 0) |
|
AV_WN32A((mb - s->mb_width - 1)->intra4x4_pred_mode_top, |
|
DC_PRED * 0x01010101); |
|
decode_mb_mode(s, mb, mb_x, mb_y, curframe->seg_map->data + mb_xy, |
|
prev_frame && prev_frame->seg_map ? |
|
prev_frame->seg_map->data + mb_xy : NULL, 1, is_vp7); |
|
s->mv_min.x -= 64; |
|
s->mv_max.x -= 64; |
|
} |
|
s->mv_min.y -= 64; |
|
s->mv_max.y -= 64; |
|
} |
|
} |
|
|
|
static void vp7_decode_mv_mb_modes(AVCodecContext *avctx, VP8Frame *cur_frame, |
|
VP8Frame *prev_frame) |
|
{ |
|
vp78_decode_mv_mb_modes(avctx, cur_frame, prev_frame, IS_VP7); |
|
} |
|
|
|
static void vp8_decode_mv_mb_modes(AVCodecContext *avctx, VP8Frame *cur_frame, |
|
VP8Frame *prev_frame) |
|
{ |
|
vp78_decode_mv_mb_modes(avctx, cur_frame, prev_frame, IS_VP8); |
|
} |
|
|
|
#if HAVE_THREADS |
|
#define check_thread_pos(td, otd, mb_x_check, mb_y_check) \ |
|
do { \ |
|
int tmp = (mb_y_check << 16) | (mb_x_check & 0xFFFF); \ |
|
if (otd->thread_mb_pos < tmp) { \ |
|
pthread_mutex_lock(&otd->lock); \ |
|
td->wait_mb_pos = tmp; \ |
|
do { \ |
|
if (otd->thread_mb_pos >= tmp) \ |
|
break; \ |
|
pthread_cond_wait(&otd->cond, &otd->lock); \ |
|
} while (1); \ |
|
td->wait_mb_pos = INT_MAX; \ |
|
pthread_mutex_unlock(&otd->lock); \ |
|
} \ |
|
} while (0); |
|
|
|
#define update_pos(td, mb_y, mb_x) \ |
|
do { \ |
|
int pos = (mb_y << 16) | (mb_x & 0xFFFF); \ |
|
int sliced_threading = (avctx->active_thread_type == FF_THREAD_SLICE) && \ |
|
(num_jobs > 1); \ |
|
int is_null = !next_td || !prev_td; \ |
|
int pos_check = (is_null) ? 1 \ |
|
: (next_td != td && \ |
|
pos >= next_td->wait_mb_pos) || \ |
|
(prev_td != td && \ |
|
pos >= prev_td->wait_mb_pos); \ |
|
td->thread_mb_pos = pos; \ |
|
if (sliced_threading && pos_check) { \ |
|
pthread_mutex_lock(&td->lock); \ |
|
pthread_cond_broadcast(&td->cond); \ |
|
pthread_mutex_unlock(&td->lock); \ |
|
} \ |
|
} while (0); |
|
#else |
|
#define check_thread_pos(td, otd, mb_x_check, mb_y_check) |
|
#define update_pos(td, mb_y, mb_x) |
|
#endif |
|
|
|
static void vp8_decode_mb_row_no_filter(AVCodecContext *avctx, void *tdata, |
|
int jobnr, int threadnr, int is_vp7) |
|
{ |
|
VP8Context *s = avctx->priv_data; |
|
VP8ThreadData *prev_td, *next_td, *td = &s->thread_data[threadnr]; |
|
int mb_y = td->thread_mb_pos >> 16; |
|
int mb_x, mb_xy = mb_y * s->mb_width; |
|
int num_jobs = s->num_jobs; |
|
VP8Frame *curframe = s->curframe, *prev_frame = s->prev_frame; |
|
VP56RangeCoder *c = &s->coeff_partition[mb_y & (s->num_coeff_partitions - 1)]; |
|
VP8Macroblock *mb; |
|
uint8_t *dst[3] = { |
|
curframe->tf.f->data[0] + 16 * mb_y * s->linesize, |
|
curframe->tf.f->data[1] + 8 * mb_y * s->uvlinesize, |
|
curframe->tf.f->data[2] + 8 * mb_y * s->uvlinesize |
|
}; |
|
if (mb_y == 0) |
|
prev_td = td; |
|
else |
|
prev_td = &s->thread_data[(jobnr + num_jobs - 1) % num_jobs]; |
|
if (mb_y == s->mb_height - 1) |
|
next_td = td; |
|
else |
|
next_td = &s->thread_data[(jobnr + 1) % num_jobs]; |
|
if (s->mb_layout == 1) |
|
mb = s->macroblocks_base + ((s->mb_width + 1) * (mb_y + 1) + 1); |
|
else { |
|
// Make sure the previous frame has read its segmentation map, |
|
// if we re-use the same map. |
|
if (prev_frame && s->segmentation.enabled && |
|
!s->segmentation.update_map) |
|
ff_thread_await_progress(&prev_frame->tf, mb_y, 0); |
|
mb = s->macroblocks + (s->mb_height - mb_y - 1) * 2; |
|
memset(mb - 1, 0, sizeof(*mb)); // zero left macroblock |
|
AV_WN32A(s->intra4x4_pred_mode_left, DC_PRED * 0x01010101); |
|
} |
|
|
|
if (!is_vp7 || mb_y == 0) |
|
memset(td->left_nnz, 0, sizeof(td->left_nnz)); |
|
|
|
s->mv_min.x = -MARGIN; |
|
s->mv_max.x = ((s->mb_width - 1) << 6) + MARGIN; |
|
|
|
for (mb_x = 0; mb_x < s->mb_width; mb_x++, mb_xy++, mb++) { |
|
// Wait for previous thread to read mb_x+2, and reach mb_y-1. |
|
if (prev_td != td) { |
|
if (threadnr != 0) { |
|
check_thread_pos(td, prev_td, |
|
mb_x + (is_vp7 ? 2 : 1), |
|
mb_y - (is_vp7 ? 2 : 1)); |
|
} else { |
|
check_thread_pos(td, prev_td, |
|
mb_x + (is_vp7 ? 2 : 1) + s->mb_width + 3, |
|
mb_y - (is_vp7 ? 2 : 1)); |
|
} |
|
} |
|
|
|
s->vdsp.prefetch(dst[0] + (mb_x & 3) * 4 * s->linesize + 64, |
|
s->linesize, 4); |
|
s->vdsp.prefetch(dst[1] + (mb_x & 7) * s->uvlinesize + 64, |
|
dst[2] - dst[1], 2); |
|
|
|
if (!s->mb_layout) |
|
decode_mb_mode(s, mb, mb_x, mb_y, curframe->seg_map->data + mb_xy, |
|
prev_frame && prev_frame->seg_map ? |
|
prev_frame->seg_map->data + mb_xy : NULL, 0, is_vp7); |
|
|
|
prefetch_motion(s, mb, mb_x, mb_y, mb_xy, VP56_FRAME_PREVIOUS); |
|
|
|
if (!mb->skip) |
|
decode_mb_coeffs(s, td, c, mb, s->top_nnz[mb_x], td->left_nnz, is_vp7); |
|
|
|
if (mb->mode <= MODE_I4x4) |
|
intra_predict(s, td, dst, mb, mb_x, mb_y, is_vp7); |
|
else |
|
inter_predict(s, td, dst, mb, mb_x, mb_y); |
|
|
|
prefetch_motion(s, mb, mb_x, mb_y, mb_xy, VP56_FRAME_GOLDEN); |
|
|
|
if (!mb->skip) { |
|
idct_mb(s, td, dst, mb); |
|
} else { |
|
AV_ZERO64(td->left_nnz); |
|
AV_WN64(s->top_nnz[mb_x], 0); // array of 9, so unaligned |
|
|
|
/* Reset DC block predictors if they would exist |
|
* if the mb had coefficients */ |
|
if (mb->mode != MODE_I4x4 && mb->mode != VP8_MVMODE_SPLIT) { |
|
td->left_nnz[8] = 0; |
|
s->top_nnz[mb_x][8] = 0; |
|
} |
|
} |
|
|
|
if (s->deblock_filter) |
|
filter_level_for_mb(s, mb, &td->filter_strength[mb_x], is_vp7); |
|
|
|
if (s->deblock_filter && num_jobs != 1 && threadnr == num_jobs - 1) { |
|
if (s->filter.simple) |
|
backup_mb_border(s->top_border[mb_x + 1], dst[0], |
|
NULL, NULL, s->linesize, 0, 1); |
|
else |
|
backup_mb_border(s->top_border[mb_x + 1], dst[0], |
|
dst[1], dst[2], s->linesize, s->uvlinesize, 0); |
|
} |
|
|
|
prefetch_motion(s, mb, mb_x, mb_y, mb_xy, VP56_FRAME_GOLDEN2); |
|
|
|
dst[0] += 16; |
|
dst[1] += 8; |
|
dst[2] += 8; |
|
s->mv_min.x -= 64; |
|
s->mv_max.x -= 64; |
|
|
|
if (mb_x == s->mb_width + 1) { |
|
update_pos(td, mb_y, s->mb_width + 3); |
|
} else { |
|
update_pos(td, mb_y, mb_x); |
|
} |
|
} |
|
} |
|
|
|
static void vp8_filter_mb_row(AVCodecContext *avctx, void *tdata, |
|
int jobnr, int threadnr, int is_vp7) |
|
{ |
|
VP8Context *s = avctx->priv_data; |
|
VP8ThreadData *td = &s->thread_data[threadnr]; |
|
int mb_x, mb_y = td->thread_mb_pos >> 16, num_jobs = s->num_jobs; |
|
AVFrame *curframe = s->curframe->tf.f; |
|
VP8Macroblock *mb; |
|
VP8ThreadData *prev_td, *next_td; |
|
uint8_t *dst[3] = { |
|
curframe->data[0] + 16 * mb_y * s->linesize, |
|
curframe->data[1] + 8 * mb_y * s->uvlinesize, |
|
curframe->data[2] + 8 * mb_y * s->uvlinesize |
|
}; |
|
|
|
if (s->mb_layout == 1) |
|
mb = s->macroblocks_base + ((s->mb_width + 1) * (mb_y + 1) + 1); |
|
else |
|
mb = s->macroblocks + (s->mb_height - mb_y - 1) * 2; |
|
|
|
if (mb_y == 0) |
|
prev_td = td; |
|
else |
|
prev_td = &s->thread_data[(jobnr + num_jobs - 1) % num_jobs]; |
|
if (mb_y == s->mb_height - 1) |
|
next_td = td; |
|
else |
|
next_td = &s->thread_data[(jobnr + 1) % num_jobs]; |
|
|
|
for (mb_x = 0; mb_x < s->mb_width; mb_x++, mb++) { |
|
VP8FilterStrength *f = &td->filter_strength[mb_x]; |
|
if (prev_td != td) |
|
check_thread_pos(td, prev_td, |
|
(mb_x + 1) + (s->mb_width + 3), mb_y - 1); |
|
if (next_td != td) |
|
if (next_td != &s->thread_data[0]) |
|
check_thread_pos(td, next_td, mb_x + 1, mb_y + 1); |
|
|
|
if (num_jobs == 1) { |
|
if (s->filter.simple) |
|
backup_mb_border(s->top_border[mb_x + 1], dst[0], |
|
NULL, NULL, s->linesize, 0, 1); |
|
else |
|
backup_mb_border(s->top_border[mb_x + 1], dst[0], |
|
dst[1], dst[2], s->linesize, s->uvlinesize, 0); |
|
} |
|
|
|
if (s->filter.simple) |
|
filter_mb_simple(s, dst[0], f, mb_x, mb_y); |
|
else |
|
filter_mb(s, dst, f, mb_x, mb_y, is_vp7); |
|
dst[0] += 16; |
|
dst[1] += 8; |
|
dst[2] += 8; |
|
|
|
update_pos(td, mb_y, (s->mb_width + 3) + mb_x); |
|
} |
|
} |
|
|
|
static av_always_inline |
|
int vp78_decode_mb_row_sliced(AVCodecContext *avctx, void *tdata, int jobnr, |
|
int threadnr, int is_vp7) |
|
{ |
|
VP8Context *s = avctx->priv_data; |
|
VP8ThreadData *td = &s->thread_data[jobnr]; |
|
VP8ThreadData *next_td = NULL, *prev_td = NULL; |
|
VP8Frame *curframe = s->curframe; |
|
int mb_y, num_jobs = s->num_jobs; |
|
|
|
td->thread_nr = threadnr; |
|
for (mb_y = jobnr; mb_y < s->mb_height; mb_y += num_jobs) { |
|
if (mb_y >= s->mb_height) |
|
break; |
|
td->thread_mb_pos = mb_y << 16; |
|
vp8_decode_mb_row_no_filter(avctx, tdata, jobnr, threadnr, is_vp7); |
|
if (s->deblock_filter) |
|
vp8_filter_mb_row(avctx, tdata, jobnr, threadnr, is_vp7); |
|
update_pos(td, mb_y, INT_MAX & 0xFFFF); |
|
|
|
s->mv_min.y -= 64; |
|
s->mv_max.y -= 64; |
|
|
|
if (avctx->active_thread_type == FF_THREAD_FRAME) |
|
ff_thread_report_progress(&curframe->tf, mb_y, 0); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int vp7_decode_mb_row_sliced(AVCodecContext *avctx, void *tdata, |
|
int jobnr, int threadnr) |
|
{ |
|
return vp78_decode_mb_row_sliced(avctx, tdata, jobnr, threadnr, IS_VP7); |
|
} |
|
|
|
static int vp8_decode_mb_row_sliced(AVCodecContext *avctx, void *tdata, |
|
int jobnr, int threadnr) |
|
{ |
|
return vp78_decode_mb_row_sliced(avctx, tdata, jobnr, threadnr, IS_VP8); |
|
} |
|
|
|
|
|
static av_always_inline |
|
int vp78_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, |
|
AVPacket *avpkt, int is_vp7) |
|
{ |
|
VP8Context *s = avctx->priv_data; |
|
int ret, i, referenced, num_jobs; |
|
enum AVDiscard skip_thresh; |
|
VP8Frame *av_uninit(curframe), *prev_frame; |
|
|
|
if (is_vp7) |
|
ret = vp7_decode_frame_header(s, avpkt->data, avpkt->size); |
|
else |
|
ret = vp8_decode_frame_header(s, avpkt->data, avpkt->size); |
|
|
|
if (ret < 0) |
|
goto err; |
|
|
|
prev_frame = s->framep[VP56_FRAME_CURRENT]; |
|
|
|
referenced = s->update_last || s->update_golden == VP56_FRAME_CURRENT || |
|
s->update_altref == VP56_FRAME_CURRENT; |
|
|
|
skip_thresh = !referenced ? AVDISCARD_NONREF |
|
: !s->keyframe ? AVDISCARD_NONKEY |
|
: AVDISCARD_ALL; |
|
|
|
if (avctx->skip_frame >= skip_thresh) { |
|
s->invisible = 1; |
|
memcpy(&s->next_framep[0], &s->framep[0], sizeof(s->framep[0]) * 4); |
|
goto skip_decode; |
|
} |
|
s->deblock_filter = s->filter.level && avctx->skip_loop_filter < skip_thresh; |
|
|
|
// release no longer referenced frames |
|
for (i = 0; i < 5; i++) |
|
if (s->frames[i].tf.f->data[0] && |
|
&s->frames[i] != prev_frame && |
|
&s->frames[i] != s->framep[VP56_FRAME_PREVIOUS] && |
|
&s->frames[i] != s->framep[VP56_FRAME_GOLDEN] && |
|
&s->frames[i] != s->framep[VP56_FRAME_GOLDEN2]) |
|
vp8_release_frame(s, &s->frames[i]); |
|
|
|
curframe = s->framep[VP56_FRAME_CURRENT] = vp8_find_free_buffer(s); |
|
|
|
if (!s->colorspace) |
|
avctx->colorspace = AVCOL_SPC_BT470BG; |
|
if (s->fullrange) |
|
avctx->color_range = AVCOL_RANGE_JPEG; |
|
else |
|
avctx->color_range = AVCOL_RANGE_MPEG; |
|
|
|
/* Given that arithmetic probabilities are updated every frame, it's quite |
|
* likely that the values we have on a random interframe are complete |
|
* junk if we didn't start decode on a keyframe. So just don't display |
|
* anything rather than junk. */ |
|
if (!s->keyframe && (!s->framep[VP56_FRAME_PREVIOUS] || |
|
!s->framep[VP56_FRAME_GOLDEN] || |
|
!s->framep[VP56_FRAME_GOLDEN2])) { |
|
av_log(avctx, AV_LOG_WARNING, |
|
"Discarding interframe without a prior keyframe!\n"); |
|
ret = AVERROR_INVALIDDATA; |
|
goto err; |
|
} |
|
|
|
curframe->tf.f->key_frame = s->keyframe; |
|
curframe->tf.f->pict_type = s->keyframe ? AV_PICTURE_TYPE_I |
|
: AV_PICTURE_TYPE_P; |
|
if ((ret = vp8_alloc_frame(s, curframe, referenced))) { |
|
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed!\n"); |
|
goto err; |
|
} |
|
|
|
// check if golden and altref are swapped |
|
if (s->update_altref != VP56_FRAME_NONE) |
|
s->next_framep[VP56_FRAME_GOLDEN2] = s->framep[s->update_altref]; |
|
else |
|
s->next_framep[VP56_FRAME_GOLDEN2] = s->framep[VP56_FRAME_GOLDEN2]; |
|
|
|
if (s->update_golden != VP56_FRAME_NONE) |
|
s->next_framep[VP56_FRAME_GOLDEN] = s->framep[s->update_golden]; |
|
else |
|
s->next_framep[VP56_FRAME_GOLDEN] = s->framep[VP56_FRAME_GOLDEN]; |
|
|
|
if (s->update_last) |
|
s->next_framep[VP56_FRAME_PREVIOUS] = curframe; |
|
else |
|
s->next_framep[VP56_FRAME_PREVIOUS] = s->framep[VP56_FRAME_PREVIOUS]; |
|
|
|
s->next_framep[VP56_FRAME_CURRENT] = curframe; |
|
|
|
ff_thread_finish_setup(avctx); |
|
|
|
s->linesize = curframe->tf.f->linesize[0]; |
|
s->uvlinesize = curframe->tf.f->linesize[1]; |
|
|
|
memset(s->top_nnz, 0, s->mb_width * sizeof(*s->top_nnz)); |
|
/* Zero macroblock structures for top/top-left prediction |
|
* from outside the frame. */ |
|
if (!s->mb_layout) |
|
memset(s->macroblocks + s->mb_height * 2 - 1, 0, |
|
(s->mb_width + 1) * sizeof(*s->macroblocks)); |
|
if (!s->mb_layout && s->keyframe) |
|
memset(s->intra4x4_pred_mode_top, DC_PRED, s->mb_width * 4); |
|
|
|
memset(s->ref_count, 0, sizeof(s->ref_count)); |
|
|
|
if (s->mb_layout == 1) { |
|
// Make sure the previous frame has read its segmentation map, |
|
// if we re-use the same map. |
|
if (prev_frame && s->segmentation.enabled && |
|
!s->segmentation.update_map) |
|
ff_thread_await_progress(&prev_frame->tf, 1, 0); |
|
if (is_vp7) |
|
vp7_decode_mv_mb_modes(avctx, curframe, prev_frame); |
|
else |
|
vp8_decode_mv_mb_modes(avctx, curframe, prev_frame); |
|
} |
|
|
|
if (avctx->active_thread_type == FF_THREAD_FRAME) |
|
num_jobs = 1; |
|
else |
|
num_jobs = FFMIN(s->num_coeff_partitions, avctx->thread_count); |
|
s->num_jobs = num_jobs; |
|
s->curframe = curframe; |
|
s->prev_frame = prev_frame; |
|
s->mv_min.y = -MARGIN; |
|
s->mv_max.y = ((s->mb_height - 1) << 6) + MARGIN; |
|
for (i = 0; i < MAX_THREADS; i++) { |
|
s->thread_data[i].thread_mb_pos = 0; |
|
s->thread_data[i].wait_mb_pos = INT_MAX; |
|
} |
|
if (is_vp7) |
|
avctx->execute2(avctx, vp7_decode_mb_row_sliced, s->thread_data, NULL, |
|
num_jobs); |
|
else |
|
avctx->execute2(avctx, vp8_decode_mb_row_sliced, s->thread_data, NULL, |
|
num_jobs); |
|
|
|
ff_thread_report_progress(&curframe->tf, INT_MAX, 0); |
|
memcpy(&s->framep[0], &s->next_framep[0], sizeof(s->framep[0]) * 4); |
|
|
|
skip_decode: |
|
// if future frames don't use the updated probabilities, |
|
// reset them to the values we saved |
|
if (!s->update_probabilities) |
|
s->prob[0] = s->prob[1]; |
|
|
|
if (!s->invisible) { |
|
if ((ret = av_frame_ref(data, curframe->tf.f)) < 0) |
|
return ret; |
|
*got_frame = 1; |
|
} |
|
|
|
return avpkt->size; |
|
err: |
|
memcpy(&s->next_framep[0], &s->framep[0], sizeof(s->framep[0]) * 4); |
|
return ret; |
|
} |
|
|
|
int ff_vp8_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, |
|
AVPacket *avpkt) |
|
{ |
|
return vp78_decode_frame(avctx, data, got_frame, avpkt, IS_VP8); |
|
} |
|
|
|
#if CONFIG_VP7_DECODER |
|
static int vp7_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, |
|
AVPacket *avpkt) |
|
{ |
|
return vp78_decode_frame(avctx, data, got_frame, avpkt, IS_VP7); |
|
} |
|
#endif /* CONFIG_VP7_DECODER */ |
|
|
|
av_cold int ff_vp8_decode_free(AVCodecContext *avctx) |
|
{ |
|
VP8Context *s = avctx->priv_data; |
|
int i; |
|
|
|
vp8_decode_flush_impl(avctx, 1); |
|
for (i = 0; i < FF_ARRAY_ELEMS(s->frames); i++) |
|
av_frame_free(&s->frames[i].tf.f); |
|
|
|
return 0; |
|
} |
|
|
|
static av_cold int vp8_init_frames(VP8Context *s) |
|
{ |
|
int i; |
|
for (i = 0; i < FF_ARRAY_ELEMS(s->frames); i++) { |
|
s->frames[i].tf.f = av_frame_alloc(); |
|
if (!s->frames[i].tf.f) |
|
return AVERROR(ENOMEM); |
|
} |
|
return 0; |
|
} |
|
|
|
static av_always_inline |
|
int vp78_decode_init(AVCodecContext *avctx, int is_vp7) |
|
{ |
|
VP8Context *s = avctx->priv_data; |
|
int ret; |
|
|
|
s->avctx = avctx; |
|
avctx->pix_fmt = AV_PIX_FMT_YUV420P; |
|
avctx->internal->allocate_progress = 1; |
|
|
|
ff_videodsp_init(&s->vdsp, 8); |
|
|
|
ff_vp78dsp_init(&s->vp8dsp); |
|
if (CONFIG_VP7_DECODER && is_vp7) { |
|
ff_h264_pred_init(&s->hpc, AV_CODEC_ID_VP7, 8, 1); |
|
ff_vp7dsp_init(&s->vp8dsp); |
|
} else if (CONFIG_VP8_DECODER && !is_vp7) { |
|
ff_h264_pred_init(&s->hpc, AV_CODEC_ID_VP8, 8, 1); |
|
ff_vp8dsp_init(&s->vp8dsp); |
|
} |
|
|
|
/* does not change for VP8 */ |
|
memcpy(s->prob[0].scan, zigzag_scan, sizeof(s->prob[0].scan)); |
|
|
|
if ((ret = vp8_init_frames(s)) < 0) { |
|
ff_vp8_decode_free(avctx); |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
#if CONFIG_VP7_DECODER |
|
static int vp7_decode_init(AVCodecContext *avctx) |
|
{ |
|
return vp78_decode_init(avctx, IS_VP7); |
|
} |
|
#endif /* CONFIG_VP7_DECODER */ |
|
|
|
av_cold int ff_vp8_decode_init(AVCodecContext *avctx) |
|
{ |
|
return vp78_decode_init(avctx, IS_VP8); |
|
} |
|
|
|
#if CONFIG_VP8_DECODER |
|
static av_cold int vp8_decode_init_thread_copy(AVCodecContext *avctx) |
|
{ |
|
VP8Context *s = avctx->priv_data; |
|
int ret; |
|
|
|
s->avctx = avctx; |
|
|
|
if ((ret = vp8_init_frames(s)) < 0) { |
|
ff_vp8_decode_free(avctx); |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
#define REBASE(pic) pic ? pic - &s_src->frames[0] + &s->frames[0] : NULL |
|
|
|
static int vp8_decode_update_thread_context(AVCodecContext *dst, |
|
const AVCodecContext *src) |
|
{ |
|
VP8Context *s = dst->priv_data, *s_src = src->priv_data; |
|
int i; |
|
|
|
if (s->macroblocks_base && |
|
(s_src->mb_width != s->mb_width || s_src->mb_height != s->mb_height)) { |
|
free_buffers(s); |
|
s->mb_width = s_src->mb_width; |
|
s->mb_height = s_src->mb_height; |
|
} |
|
|
|
s->prob[0] = s_src->prob[!s_src->update_probabilities]; |
|
s->segmentation = s_src->segmentation; |
|
s->lf_delta = s_src->lf_delta; |
|
memcpy(s->sign_bias, s_src->sign_bias, sizeof(s->sign_bias)); |
|
|
|
for (i = 0; i < FF_ARRAY_ELEMS(s_src->frames); i++) { |
|
if (s_src->frames[i].tf.f->data[0]) { |
|
int ret = vp8_ref_frame(s, &s->frames[i], &s_src->frames[i]); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
} |
|
|
|
s->framep[0] = REBASE(s_src->next_framep[0]); |
|
s->framep[1] = REBASE(s_src->next_framep[1]); |
|
s->framep[2] = REBASE(s_src->next_framep[2]); |
|
s->framep[3] = REBASE(s_src->next_framep[3]); |
|
|
|
return 0; |
|
} |
|
#endif /* CONFIG_VP8_DECODER */ |
|
|
|
#if CONFIG_VP7_DECODER |
|
AVCodec ff_vp7_decoder = { |
|
.name = "vp7", |
|
.long_name = NULL_IF_CONFIG_SMALL("On2 VP7"), |
|
.type = AVMEDIA_TYPE_VIDEO, |
|
.id = AV_CODEC_ID_VP7, |
|
.priv_data_size = sizeof(VP8Context), |
|
.init = vp7_decode_init, |
|
.close = ff_vp8_decode_free, |
|
.decode = vp7_decode_frame, |
|
.capabilities = CODEC_CAP_DR1, |
|
.flush = vp8_decode_flush, |
|
}; |
|
#endif /* CONFIG_VP7_DECODER */ |
|
|
|
#if CONFIG_VP8_DECODER |
|
AVCodec ff_vp8_decoder = { |
|
.name = "vp8", |
|
.long_name = NULL_IF_CONFIG_SMALL("On2 VP8"), |
|
.type = AVMEDIA_TYPE_VIDEO, |
|
.id = AV_CODEC_ID_VP8, |
|
.priv_data_size = sizeof(VP8Context), |
|
.init = ff_vp8_decode_init, |
|
.close = ff_vp8_decode_free, |
|
.decode = ff_vp8_decode_frame, |
|
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS | CODEC_CAP_SLICE_THREADS, |
|
.flush = vp8_decode_flush, |
|
.init_thread_copy = ONLY_IF_THREADS_ENABLED(vp8_decode_init_thread_copy), |
|
.update_thread_context = ONLY_IF_THREADS_ENABLED(vp8_decode_update_thread_context), |
|
}; |
|
#endif /* CONFIG_VP7_DECODER */
|
|
|