mirror of https://github.com/FFmpeg/FFmpeg.git
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>pull/140/head
Arttu Ylä-Outinen
9 years ago
committed by
Michael Niedermayer
parent
ae4c9ddebc
commit
b90b6af710
8 changed files with 289 additions and 2 deletions
@ -0,0 +1,248 @@ |
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/*
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* libkvazaar encoder |
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* |
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* Copyright (c) 2015 Tampere University of Technology |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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#include <kvazaar.h> |
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#include <string.h> |
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#include "libavutil/avassert.h" |
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#include "libavutil/dict.h" |
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#include "libavutil/opt.h" |
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#include "avcodec.h" |
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#include "internal.h" |
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typedef struct LibkvazaarContext { |
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const AVClass *class; |
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const kvz_api *api; |
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kvz_encoder *encoder; |
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kvz_config *config; |
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char *kvz_params; |
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} LibkvazaarContext; |
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static av_cold int libkvazaar_init(AVCodecContext *avctx) |
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{ |
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int retval = 0; |
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kvz_config *cfg = NULL; |
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kvz_encoder *enc = NULL; |
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const kvz_api *const api = kvz_api_get(8); |
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LibkvazaarContext *const ctx = avctx->priv_data; |
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// Kvazaar requires width and height to be multiples of eight.
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if (avctx->width % 8 || avctx->height % 8) { |
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av_log(avctx, AV_LOG_ERROR, "Video dimensions are not a multiple of 8.\n"); |
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retval = AVERROR_INVALIDDATA; |
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goto done; |
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} |
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cfg = api->config_alloc(); |
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if (!cfg) { |
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av_log(avctx, AV_LOG_ERROR, "Could not allocate kvazaar config structure.\n"); |
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retval = AVERROR(ENOMEM); |
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goto done; |
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} |
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if (!api->config_init(cfg)) { |
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av_log(avctx, AV_LOG_ERROR, "Could not initialize kvazaar config structure.\n"); |
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retval = AVERROR_EXTERNAL; |
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goto done; |
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} |
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cfg->width = avctx->width; |
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cfg->height = avctx->height; |
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cfg->framerate = |
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(double)(avctx->time_base.num * avctx->ticks_per_frame) / avctx->time_base.den; |
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cfg->threads = avctx->thread_count; |
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cfg->target_bitrate = avctx->bit_rate; |
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cfg->vui.sar_width = avctx->sample_aspect_ratio.num; |
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cfg->vui.sar_height = avctx->sample_aspect_ratio.den; |
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if (ctx->kvz_params) { |
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AVDictionary *dict = NULL; |
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if (!av_dict_parse_string(&dict, ctx->kvz_params, "=", ",", 0)) { |
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AVDictionaryEntry *entry = NULL; |
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while ((entry = av_dict_get(dict, "", entry, AV_DICT_IGNORE_SUFFIX))) { |
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if (!api->config_parse(cfg, entry->key, entry->value)) { |
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av_log(avctx, AV_LOG_WARNING, |
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"Invalid option: %s=%s.\n", |
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entry->key, entry->value); |
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} |
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} |
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av_dict_free(&dict); |
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} |
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} |
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enc = api->encoder_open(cfg); |
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if (!enc) { |
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av_log(avctx, AV_LOG_ERROR, "Could not open kvazaar encoder.\n"); |
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retval = AVERROR_EXTERNAL; |
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goto done; |
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} |
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ctx->api = api; |
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ctx->encoder = enc; |
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ctx->config = cfg; |
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enc = NULL; |
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cfg = NULL; |
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done: |
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if (cfg) api->config_destroy(cfg); |
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if (enc) api->encoder_close(enc); |
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return retval; |
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} |
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static av_cold int libkvazaar_close(AVCodecContext *avctx) |
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{ |
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LibkvazaarContext *ctx = avctx->priv_data; |
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if (!ctx->api) return 0; |
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if (ctx->encoder) { |
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ctx->api->encoder_close(ctx->encoder); |
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ctx->encoder = NULL; |
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} |
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if (ctx->config) { |
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ctx->api->config_destroy(ctx->config); |
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ctx->config = NULL; |
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} |
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return 0; |
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} |
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static int libkvazaar_encode(AVCodecContext *avctx, |
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AVPacket *avpkt, |
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const AVFrame *frame, |
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int *got_packet_ptr) |
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{ |
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int retval = 0; |
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kvz_picture *img_in = NULL; |
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kvz_data_chunk *data_out = NULL; |
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uint32_t len_out = 0; |
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LibkvazaarContext *ctx = avctx->priv_data; |
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*got_packet_ptr = 0; |
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if (frame) { |
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int i = 0; |
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av_assert0(frame->width == ctx->config->width); |
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av_assert0(frame->height == ctx->config->height); |
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av_assert0(frame->format == avctx->pix_fmt); |
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// Allocate input picture for kvazaar.
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img_in = ctx->api->picture_alloc(frame->width, frame->height); |
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if (!img_in) { |
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av_log(avctx, AV_LOG_ERROR, "Failed to allocate picture.\n"); |
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retval = AVERROR(ENOMEM); |
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goto done; |
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} |
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// Copy pixels from frame to img_in.
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for (i = 0; i < 3; ++i) { |
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uint8_t *dst = img_in->data[i]; |
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uint8_t *src = frame->data[i]; |
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int width = (i == 0) ? frame->width : (frame->width / 2); |
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int height = (i == 0) ? frame->height : (frame->height / 2); |
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int y = 0; |
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for (y = 0; y < height; ++y) { |
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memcpy(dst, src, width); |
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src += frame->linesize[i]; |
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dst += width; |
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} |
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} |
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} |
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if (!ctx->api->encoder_encode(ctx->encoder, img_in, &data_out, &len_out, NULL)) { |
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av_log(avctx, AV_LOG_ERROR, "Failed to encode frame.\n"); |
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retval = AVERROR_EXTERNAL; |
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goto done; |
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} |
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if (data_out) { |
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kvz_data_chunk *chunk = NULL; |
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uint64_t written = 0; |
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retval = ff_alloc_packet(avpkt, len_out); |
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if (retval < 0) { |
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av_log(avctx, AV_LOG_ERROR, "Failed to allocate output packet.\n"); |
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goto done; |
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} |
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for (chunk = data_out; chunk != NULL; chunk = chunk->next) { |
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av_assert0(written + chunk->len <= len_out); |
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memcpy(avpkt->data + written, chunk->data, chunk->len); |
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written += chunk->len; |
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} |
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*got_packet_ptr = 1; |
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ctx->api->chunk_free(data_out); |
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data_out = NULL; |
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} |
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done: |
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if (img_in) ctx->api->picture_free(img_in); |
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if (data_out) ctx->api->chunk_free(data_out); |
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return retval; |
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} |
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static const enum AVPixelFormat pix_fmts[] = { |
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AV_PIX_FMT_YUV420P, |
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AV_PIX_FMT_NONE |
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}; |
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static const AVOption options[] = { |
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{ "kvazaar-params", "Set kvazaar parameters as a comma-separated list of name=value pairs.", |
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offsetof(LibkvazaarContext, kvz_params), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, |
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AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, |
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{ NULL }, |
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}; |
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static const AVClass class = { |
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.class_name = "libkvazaar", |
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.item_name = av_default_item_name, |
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.option = options, |
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.version = LIBAVUTIL_VERSION_INT, |
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}; |
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static const AVCodecDefault defaults[] = { |
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{ "b", "0" }, |
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{ NULL }, |
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}; |
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AVCodec ff_libkvazaar_encoder = { |
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.name = "libkvazaar", |
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.long_name = NULL_IF_CONFIG_SMALL("libkvazaar H.265 / HEVC"), |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = AV_CODEC_ID_HEVC, |
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.capabilities = CODEC_CAP_DELAY, |
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.pix_fmts = pix_fmts, |
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.priv_class = &class, |
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.priv_data_size = sizeof(LibkvazaarContext), |
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.defaults = defaults, |
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.init = libkvazaar_init, |
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.encode2 = libkvazaar_encode, |
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.close = libkvazaar_close, |
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}; |
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