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1585 lines
56 KiB
1585 lines
56 KiB
/* |
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* Copyright (c) 2003 The Libav Project |
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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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/* |
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* How to use this decoder: |
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* SVQ3 data is transported within Apple Quicktime files. Quicktime files |
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* have stsd atoms to describe media trak properties. A stsd atom for a |
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* video trak contains 1 or more ImageDescription atoms. These atoms begin |
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* with the 4-byte length of the atom followed by the codec fourcc. Some |
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* decoders need information in this atom to operate correctly. Such |
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* is the case with SVQ3. In order to get the best use out of this decoder, |
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* the calling app must make the SVQ3 ImageDescription atom available |
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* via the AVCodecContext's extradata[_size] field: |
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* |
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* AVCodecContext.extradata = pointer to ImageDescription, first characters |
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* are expected to be 'S', 'V', 'Q', and '3', NOT the 4-byte atom length |
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* AVCodecContext.extradata_size = size of ImageDescription atom memory |
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* buffer (which will be the same as the ImageDescription atom size field |
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* from the QT file, minus 4 bytes since the length is missing) |
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* |
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* You will know you have these parameters passed correctly when the decoder |
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* correctly decodes this file: |
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* http://samples.libav.org/V-codecs/SVQ3/Vertical400kbit.sorenson3.mov |
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*/ |
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|
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#include <inttypes.h> |
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|
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#include "libavutil/attributes.h" |
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#include "internal.h" |
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#include "avcodec.h" |
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#include "mpegutils.h" |
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#include "h264.h" |
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#include "h264data.h" |
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#include "golomb.h" |
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#include "hpeldsp.h" |
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#include "mathops.h" |
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#include "rectangle.h" |
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#include "tpeldsp.h" |
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|
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#if CONFIG_ZLIB |
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#include <zlib.h> |
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#endif |
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#include "svq1.h" |
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|
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/** |
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* @file |
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* svq3 decoder. |
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*/ |
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|
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typedef struct SVQ3Context { |
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AVCodecContext *avctx; |
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|
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H264DSPContext h264dsp; |
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H264PredContext hpc; |
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HpelDSPContext hdsp; |
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TpelDSPContext tdsp; |
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VideoDSPContext vdsp; |
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|
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H264Picture *cur_pic; |
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H264Picture *next_pic; |
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H264Picture *last_pic; |
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GetBitContext gb; |
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GetBitContext gb_slice; |
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uint8_t *slice_buf; |
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int slice_size; |
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int halfpel_flag; |
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int thirdpel_flag; |
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int unknown_flag; |
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uint32_t watermark_key; |
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int adaptive_quant; |
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int next_p_frame_damaged; |
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int h_edge_pos; |
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int v_edge_pos; |
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int last_frame_output; |
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int slice_num; |
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int qscale; |
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int cbp; |
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int frame_num; |
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int frame_num_offset; |
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int prev_frame_num_offset; |
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int prev_frame_num; |
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|
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enum AVPictureType pict_type; |
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int low_delay; |
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|
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int mb_x, mb_y; |
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int mb_xy; |
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int mb_width, mb_height; |
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int mb_stride, mb_num; |
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int b_stride; |
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|
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uint32_t *mb2br_xy; |
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|
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int chroma_pred_mode; |
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int intra16x16_pred_mode; |
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int8_t intra4x4_pred_mode_cache[5 * 8]; |
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int8_t (*intra4x4_pred_mode); |
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|
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unsigned int top_samples_available; |
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unsigned int topright_samples_available; |
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unsigned int left_samples_available; |
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uint8_t *edge_emu_buffer; |
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|
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DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2]; |
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DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8]; |
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DECLARE_ALIGNED(16, int16_t, mb)[16 * 48 * 2]; |
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DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2]; |
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DECLARE_ALIGNED(8, uint8_t, non_zero_count_cache)[15 * 8]; |
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uint32_t dequant4_coeff[QP_MAX_NUM + 1][16]; |
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int block_offset[2 * (16 * 3)]; |
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} SVQ3Context; |
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#define FULLPEL_MODE 1 |
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#define HALFPEL_MODE 2 |
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#define THIRDPEL_MODE 3 |
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#define PREDICT_MODE 4 |
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|
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/* dual scan (from some older H.264 draft) |
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* o-->o-->o o |
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* | /| |
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* o o o / o |
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* | / | |/ | |
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* o o o o |
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* / |
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* o-->o-->o-->o |
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*/ |
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static const uint8_t svq3_scan[16] = { |
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0 + 0 * 4, 1 + 0 * 4, 2 + 0 * 4, 2 + 1 * 4, |
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2 + 2 * 4, 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, |
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0 + 1 * 4, 0 + 2 * 4, 1 + 1 * 4, 1 + 2 * 4, |
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0 + 3 * 4, 1 + 3 * 4, 2 + 3 * 4, 3 + 3 * 4, |
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}; |
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|
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static const uint8_t luma_dc_zigzag_scan[16] = { |
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0 * 16 + 0 * 64, 1 * 16 + 0 * 64, 2 * 16 + 0 * 64, 0 * 16 + 2 * 64, |
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3 * 16 + 0 * 64, 0 * 16 + 1 * 64, 1 * 16 + 1 * 64, 2 * 16 + 1 * 64, |
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1 * 16 + 2 * 64, 2 * 16 + 2 * 64, 3 * 16 + 2 * 64, 0 * 16 + 3 * 64, |
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3 * 16 + 1 * 64, 1 * 16 + 3 * 64, 2 * 16 + 3 * 64, 3 * 16 + 3 * 64, |
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}; |
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static const uint8_t svq3_pred_0[25][2] = { |
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{ 0, 0 }, |
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{ 1, 0 }, { 0, 1 }, |
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{ 0, 2 }, { 1, 1 }, { 2, 0 }, |
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{ 3, 0 }, { 2, 1 }, { 1, 2 }, { 0, 3 }, |
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{ 0, 4 }, { 1, 3 }, { 2, 2 }, { 3, 1 }, { 4, 0 }, |
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{ 4, 1 }, { 3, 2 }, { 2, 3 }, { 1, 4 }, |
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{ 2, 4 }, { 3, 3 }, { 4, 2 }, |
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{ 4, 3 }, { 3, 4 }, |
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{ 4, 4 } |
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}; |
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static const int8_t svq3_pred_1[6][6][5] = { |
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{ { 2, -1, -1, -1, -1 }, { 2, 1, -1, -1, -1 }, { 1, 2, -1, -1, -1 }, |
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{ 2, 1, -1, -1, -1 }, { 1, 2, -1, -1, -1 }, { 1, 2, -1, -1, -1 } }, |
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{ { 0, 2, -1, -1, -1 }, { 0, 2, 1, 4, 3 }, { 0, 1, 2, 4, 3 }, |
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{ 0, 2, 1, 4, 3 }, { 2, 0, 1, 3, 4 }, { 0, 4, 2, 1, 3 } }, |
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{ { 2, 0, -1, -1, -1 }, { 2, 1, 0, 4, 3 }, { 1, 2, 4, 0, 3 }, |
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{ 2, 1, 0, 4, 3 }, { 2, 1, 4, 3, 0 }, { 1, 2, 4, 0, 3 } }, |
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{ { 2, 0, -1, -1, -1 }, { 2, 0, 1, 4, 3 }, { 1, 2, 0, 4, 3 }, |
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{ 2, 1, 0, 4, 3 }, { 2, 1, 3, 4, 0 }, { 2, 4, 1, 0, 3 } }, |
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{ { 0, 2, -1, -1, -1 }, { 0, 2, 1, 3, 4 }, { 1, 2, 3, 0, 4 }, |
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{ 2, 0, 1, 3, 4 }, { 2, 1, 3, 0, 4 }, { 2, 0, 4, 3, 1 } }, |
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{ { 0, 2, -1, -1, -1 }, { 0, 2, 4, 1, 3 }, { 1, 4, 2, 0, 3 }, |
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{ 4, 2, 0, 1, 3 }, { 2, 0, 1, 4, 3 }, { 4, 2, 1, 0, 3 } }, |
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}; |
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static const struct { |
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uint8_t run; |
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uint8_t level; |
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} svq3_dct_tables[2][16] = { |
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{ { 0, 0 }, { 0, 1 }, { 1, 1 }, { 2, 1 }, { 0, 2 }, { 3, 1 }, { 4, 1 }, { 5, 1 }, |
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{ 0, 3 }, { 1, 2 }, { 2, 2 }, { 6, 1 }, { 7, 1 }, { 8, 1 }, { 9, 1 }, { 0, 4 } }, |
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{ { 0, 0 }, { 0, 1 }, { 1, 1 }, { 0, 2 }, { 2, 1 }, { 0, 3 }, { 0, 4 }, { 0, 5 }, |
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{ 3, 1 }, { 4, 1 }, { 1, 2 }, { 1, 3 }, { 0, 6 }, { 0, 7 }, { 0, 8 }, { 0, 9 } } |
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}; |
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static const uint32_t svq3_dequant_coeff[32] = { |
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3881, 4351, 4890, 5481, 6154, 6914, 7761, 8718, |
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9781, 10987, 12339, 13828, 15523, 17435, 19561, 21873, |
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24552, 27656, 30847, 34870, 38807, 43747, 49103, 54683, |
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61694, 68745, 77615, 89113, 100253, 109366, 126635, 141533 |
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}; |
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static void svq3_luma_dc_dequant_idct_c(int16_t *output, int16_t *input, int qp) |
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{ |
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const int qmul = svq3_dequant_coeff[qp]; |
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#define stride 16 |
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int i; |
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int temp[16]; |
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static const uint8_t x_offset[4] = { 0, 1 * stride, 4 * stride, 5 * stride }; |
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for (i = 0; i < 4; i++) { |
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const int z0 = 13 * (input[4 * i + 0] + input[4 * i + 2]); |
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const int z1 = 13 * (input[4 * i + 0] - input[4 * i + 2]); |
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const int z2 = 7 * input[4 * i + 1] - 17 * input[4 * i + 3]; |
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const int z3 = 17 * input[4 * i + 1] + 7 * input[4 * i + 3]; |
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temp[4 * i + 0] = z0 + z3; |
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temp[4 * i + 1] = z1 + z2; |
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temp[4 * i + 2] = z1 - z2; |
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temp[4 * i + 3] = z0 - z3; |
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} |
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for (i = 0; i < 4; i++) { |
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const int offset = x_offset[i]; |
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const int z0 = 13 * (temp[4 * 0 + i] + temp[4 * 2 + i]); |
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const int z1 = 13 * (temp[4 * 0 + i] - temp[4 * 2 + i]); |
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const int z2 = 7 * temp[4 * 1 + i] - 17 * temp[4 * 3 + i]; |
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const int z3 = 17 * temp[4 * 1 + i] + 7 * temp[4 * 3 + i]; |
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output[stride * 0 + offset] = (z0 + z3) * qmul + 0x80000 >> 20; |
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output[stride * 2 + offset] = (z1 + z2) * qmul + 0x80000 >> 20; |
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output[stride * 8 + offset] = (z1 - z2) * qmul + 0x80000 >> 20; |
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output[stride * 10 + offset] = (z0 - z3) * qmul + 0x80000 >> 20; |
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} |
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} |
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#undef stride |
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static void svq3_add_idct_c(uint8_t *dst, int16_t *block, |
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int stride, int qp, int dc) |
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{ |
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const int qmul = svq3_dequant_coeff[qp]; |
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int i; |
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|
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if (dc) { |
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dc = 13 * 13 * (dc == 1 ? 1538 * block[0] |
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: qmul * (block[0] >> 3) / 2); |
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block[0] = 0; |
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} |
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for (i = 0; i < 4; i++) { |
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const int z0 = 13 * (block[0 + 4 * i] + block[2 + 4 * i]); |
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const int z1 = 13 * (block[0 + 4 * i] - block[2 + 4 * i]); |
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const int z2 = 7 * block[1 + 4 * i] - 17 * block[3 + 4 * i]; |
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const int z3 = 17 * block[1 + 4 * i] + 7 * block[3 + 4 * i]; |
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block[0 + 4 * i] = z0 + z3; |
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block[1 + 4 * i] = z1 + z2; |
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block[2 + 4 * i] = z1 - z2; |
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block[3 + 4 * i] = z0 - z3; |
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} |
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for (i = 0; i < 4; i++) { |
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const int z0 = 13 * (block[i + 4 * 0] + block[i + 4 * 2]); |
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const int z1 = 13 * (block[i + 4 * 0] - block[i + 4 * 2]); |
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const int z2 = 7 * block[i + 4 * 1] - 17 * block[i + 4 * 3]; |
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const int z3 = 17 * block[i + 4 * 1] + 7 * block[i + 4 * 3]; |
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const int rr = (dc + 0x80000); |
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|
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dst[i + stride * 0] = av_clip_uint8(dst[i + stride * 0] + ((z0 + z3) * qmul + rr >> 20)); |
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dst[i + stride * 1] = av_clip_uint8(dst[i + stride * 1] + ((z1 + z2) * qmul + rr >> 20)); |
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dst[i + stride * 2] = av_clip_uint8(dst[i + stride * 2] + ((z1 - z2) * qmul + rr >> 20)); |
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dst[i + stride * 3] = av_clip_uint8(dst[i + stride * 3] + ((z0 - z3) * qmul + rr >> 20)); |
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} |
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|
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memset(block, 0, 16 * sizeof(int16_t)); |
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} |
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static inline int svq3_decode_block(GetBitContext *gb, int16_t *block, |
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int index, const int type) |
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{ |
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static const uint8_t *const scan_patterns[4] = { |
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luma_dc_zigzag_scan, ff_zigzag_scan, svq3_scan, ff_h264_chroma_dc_scan |
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}; |
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int run, level, limit; |
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unsigned vlc; |
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const int intra = 3 * type >> 2; |
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const uint8_t *const scan = scan_patterns[type]; |
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|
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for (limit = (16 >> intra); index < 16; index = limit, limit += 8) { |
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for (; (vlc = get_interleaved_ue_golomb(gb)) != 0; index++) { |
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int sign = (vlc & 1) ? 0 : -1; |
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vlc = vlc + 1 >> 1; |
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|
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if (type == 3) { |
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if (vlc < 3) { |
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run = 0; |
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level = vlc; |
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} else if (vlc < 4) { |
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run = 1; |
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level = 1; |
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} else { |
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run = vlc & 0x3; |
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level = (vlc + 9 >> 2) - run; |
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} |
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} else { |
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if (vlc < 16) { |
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run = svq3_dct_tables[intra][vlc].run; |
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level = svq3_dct_tables[intra][vlc].level; |
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} else if (intra) { |
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run = vlc & 0x7; |
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level = (vlc >> 3) + |
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((run == 0) ? 8 : ((run < 2) ? 2 : ((run < 5) ? 0 : -1))); |
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} else { |
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run = vlc & 0xF; |
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level = (vlc >> 4) + |
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((run == 0) ? 4 : ((run < 3) ? 2 : ((run < 10) ? 1 : 0))); |
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} |
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} |
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|
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if ((index += run) >= limit) |
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return -1; |
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|
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block[scan[index]] = (level ^ sign) - sign; |
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} |
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|
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if (type != 2) { |
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break; |
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} |
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} |
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|
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return 0; |
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} |
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|
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static av_always_inline int |
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svq3_fetch_diagonal_mv(const SVQ3Context *s, const int16_t **C, |
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int i, int list, int part_width) |
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{ |
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const int topright_ref = s->ref_cache[list][i - 8 + part_width]; |
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|
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if (topright_ref != PART_NOT_AVAILABLE) { |
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*C = s->mv_cache[list][i - 8 + part_width]; |
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return topright_ref; |
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} else { |
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*C = s->mv_cache[list][i - 8 - 1]; |
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return s->ref_cache[list][i - 8 - 1]; |
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} |
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} |
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|
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/** |
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* Get the predicted MV. |
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* @param n the block index |
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* @param part_width the width of the partition (4, 8,16) -> (1, 2, 4) |
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* @param mx the x component of the predicted motion vector |
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* @param my the y component of the predicted motion vector |
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*/ |
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static av_always_inline void svq3_pred_motion(const SVQ3Context *s, int n, |
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int part_width, int list, |
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int ref, int *const mx, int *const my) |
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{ |
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const int index8 = scan8[n]; |
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const int top_ref = s->ref_cache[list][index8 - 8]; |
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const int left_ref = s->ref_cache[list][index8 - 1]; |
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const int16_t *const A = s->mv_cache[list][index8 - 1]; |
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const int16_t *const B = s->mv_cache[list][index8 - 8]; |
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const int16_t *C; |
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int diagonal_ref, match_count; |
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|
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/* mv_cache |
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* B . . A T T T T |
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* U . . L . . , . |
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* U . . L . . . . |
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* U . . L . . , . |
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* . . . L . . . . |
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*/ |
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|
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diagonal_ref = svq3_fetch_diagonal_mv(s, &C, index8, list, part_width); |
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match_count = (diagonal_ref == ref) + (top_ref == ref) + (left_ref == ref); |
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if (match_count > 1) { //most common |
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*mx = mid_pred(A[0], B[0], C[0]); |
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*my = mid_pred(A[1], B[1], C[1]); |
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} else if (match_count == 1) { |
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if (left_ref == ref) { |
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*mx = A[0]; |
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*my = A[1]; |
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} else if (top_ref == ref) { |
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*mx = B[0]; |
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*my = B[1]; |
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} else { |
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*mx = C[0]; |
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*my = C[1]; |
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} |
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} else { |
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if (top_ref == PART_NOT_AVAILABLE && |
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diagonal_ref == PART_NOT_AVAILABLE && |
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left_ref != PART_NOT_AVAILABLE) { |
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*mx = A[0]; |
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*my = A[1]; |
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} else { |
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*mx = mid_pred(A[0], B[0], C[0]); |
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*my = mid_pred(A[1], B[1], C[1]); |
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} |
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} |
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} |
|
|
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static inline void svq3_mc_dir_part(SVQ3Context *s, |
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int x, int y, int width, int height, |
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int mx, int my, int dxy, |
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int thirdpel, int dir, int avg) |
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{ |
|
const H264Picture *pic = (dir == 0) ? s->last_pic : s->next_pic; |
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uint8_t *src, *dest; |
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int i, emu = 0; |
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int blocksize = 2 - (width >> 3); // 16->0, 8->1, 4->2 |
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int linesize = s->cur_pic->f->linesize[0]; |
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int uvlinesize = s->cur_pic->f->linesize[1]; |
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|
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mx += x; |
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my += y; |
|
|
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if (mx < 0 || mx >= s->h_edge_pos - width - 1 || |
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my < 0 || my >= s->v_edge_pos - height - 1) { |
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emu = 1; |
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mx = av_clip(mx, -16, s->h_edge_pos - width + 15); |
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my = av_clip(my, -16, s->v_edge_pos - height + 15); |
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} |
|
|
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/* form component predictions */ |
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dest = s->cur_pic->f->data[0] + x + y * linesize; |
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src = pic->f->data[0] + mx + my * linesize; |
|
|
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if (emu) { |
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s->vdsp.emulated_edge_mc(s->edge_emu_buffer, src, |
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linesize, linesize, |
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width + 1, height + 1, |
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mx, my, s->h_edge_pos, s->v_edge_pos); |
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src = s->edge_emu_buffer; |
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} |
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if (thirdpel) |
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(avg ? s->tdsp.avg_tpel_pixels_tab |
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: s->tdsp.put_tpel_pixels_tab)[dxy](dest, src, linesize, |
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width, height); |
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else |
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(avg ? s->hdsp.avg_pixels_tab |
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: s->hdsp.put_pixels_tab)[blocksize][dxy](dest, src, linesize, |
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height); |
|
|
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if (!(s->avctx->flags & AV_CODEC_FLAG_GRAY)) { |
|
mx = mx + (mx < (int) x) >> 1; |
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my = my + (my < (int) y) >> 1; |
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width = width >> 1; |
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height = height >> 1; |
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blocksize++; |
|
|
|
for (i = 1; i < 3; i++) { |
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dest = s->cur_pic->f->data[i] + (x >> 1) + (y >> 1) * uvlinesize; |
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src = pic->f->data[i] + mx + my * uvlinesize; |
|
|
|
if (emu) { |
|
s->vdsp.emulated_edge_mc(s->edge_emu_buffer, src, |
|
uvlinesize, uvlinesize, |
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width + 1, height + 1, |
|
mx, my, (s->h_edge_pos >> 1), |
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s->v_edge_pos >> 1); |
|
src = s->edge_emu_buffer; |
|
} |
|
if (thirdpel) |
|
(avg ? s->tdsp.avg_tpel_pixels_tab |
|
: s->tdsp.put_tpel_pixels_tab)[dxy](dest, src, |
|
uvlinesize, |
|
width, height); |
|
else |
|
(avg ? s->hdsp.avg_pixels_tab |
|
: s->hdsp.put_pixels_tab)[blocksize][dxy](dest, src, |
|
uvlinesize, |
|
height); |
|
} |
|
} |
|
} |
|
|
|
static inline int svq3_mc_dir(SVQ3Context *s, int size, int mode, |
|
int dir, int avg) |
|
{ |
|
int i, j, k, mx, my, dx, dy, x, y; |
|
const int part_width = ((size & 5) == 4) ? 4 : 16 >> (size & 1); |
|
const int part_height = 16 >> ((unsigned)(size + 1) / 3); |
|
const int extra_width = (mode == PREDICT_MODE) ? -16 * 6 : 0; |
|
const int h_edge_pos = 6 * (s->h_edge_pos - part_width) - extra_width; |
|
const int v_edge_pos = 6 * (s->v_edge_pos - part_height) - extra_width; |
|
|
|
for (i = 0; i < 16; i += part_height) |
|
for (j = 0; j < 16; j += part_width) { |
|
const int b_xy = (4 * s->mb_x + (j >> 2)) + |
|
(4 * s->mb_y + (i >> 2)) * s->b_stride; |
|
int dxy; |
|
x = 16 * s->mb_x + j; |
|
y = 16 * s->mb_y + i; |
|
k = (j >> 2 & 1) + (i >> 1 & 2) + |
|
(j >> 1 & 4) + (i & 8); |
|
|
|
if (mode != PREDICT_MODE) { |
|
svq3_pred_motion(s, k, part_width >> 2, dir, 1, &mx, &my); |
|
} else { |
|
mx = s->next_pic->motion_val[0][b_xy][0] << 1; |
|
my = s->next_pic->motion_val[0][b_xy][1] << 1; |
|
|
|
if (dir == 0) { |
|
mx = mx * s->frame_num_offset / |
|
s->prev_frame_num_offset + 1 >> 1; |
|
my = my * s->frame_num_offset / |
|
s->prev_frame_num_offset + 1 >> 1; |
|
} else { |
|
mx = mx * (s->frame_num_offset - s->prev_frame_num_offset) / |
|
s->prev_frame_num_offset + 1 >> 1; |
|
my = my * (s->frame_num_offset - s->prev_frame_num_offset) / |
|
s->prev_frame_num_offset + 1 >> 1; |
|
} |
|
} |
|
|
|
/* clip motion vector prediction to frame border */ |
|
mx = av_clip(mx, extra_width - 6 * x, h_edge_pos - 6 * x); |
|
my = av_clip(my, extra_width - 6 * y, v_edge_pos - 6 * y); |
|
|
|
/* get (optional) motion vector differential */ |
|
if (mode == PREDICT_MODE) { |
|
dx = dy = 0; |
|
} else { |
|
dy = get_interleaved_se_golomb(&s->gb_slice); |
|
dx = get_interleaved_se_golomb(&s->gb_slice); |
|
|
|
if (dx == INVALID_VLC || dy == INVALID_VLC) { |
|
av_log(s->avctx, AV_LOG_ERROR, "invalid MV vlc\n"); |
|
return -1; |
|
} |
|
} |
|
|
|
/* compute motion vector */ |
|
if (mode == THIRDPEL_MODE) { |
|
int fx, fy; |
|
mx = (mx + 1 >> 1) + dx; |
|
my = (my + 1 >> 1) + dy; |
|
fx = (unsigned)(mx + 0x3000) / 3 - 0x1000; |
|
fy = (unsigned)(my + 0x3000) / 3 - 0x1000; |
|
dxy = (mx - 3 * fx) + 4 * (my - 3 * fy); |
|
|
|
svq3_mc_dir_part(s, x, y, part_width, part_height, |
|
fx, fy, dxy, 1, dir, avg); |
|
mx += mx; |
|
my += my; |
|
} else if (mode == HALFPEL_MODE || mode == PREDICT_MODE) { |
|
mx = (unsigned)(mx + 1 + 0x3000) / 3 + dx - 0x1000; |
|
my = (unsigned)(my + 1 + 0x3000) / 3 + dy - 0x1000; |
|
dxy = (mx & 1) + 2 * (my & 1); |
|
|
|
svq3_mc_dir_part(s, x, y, part_width, part_height, |
|
mx >> 1, my >> 1, dxy, 0, dir, avg); |
|
mx *= 3; |
|
my *= 3; |
|
} else { |
|
mx = (unsigned)(mx + 3 + 0x6000) / 6 + dx - 0x1000; |
|
my = (unsigned)(my + 3 + 0x6000) / 6 + dy - 0x1000; |
|
|
|
svq3_mc_dir_part(s, x, y, part_width, part_height, |
|
mx, my, 0, 0, dir, avg); |
|
mx *= 6; |
|
my *= 6; |
|
} |
|
|
|
/* update mv_cache */ |
|
if (mode != PREDICT_MODE) { |
|
int32_t mv = pack16to32(mx, my); |
|
|
|
if (part_height == 8 && i < 8) { |
|
AV_WN32A(s->mv_cache[dir][scan8[k] + 1 * 8], mv); |
|
|
|
if (part_width == 8 && j < 8) |
|
AV_WN32A(s->mv_cache[dir][scan8[k] + 1 + 1 * 8], mv); |
|
} |
|
if (part_width == 8 && j < 8) |
|
AV_WN32A(s->mv_cache[dir][scan8[k] + 1], mv); |
|
if (part_width == 4 || part_height == 4) |
|
AV_WN32A(s->mv_cache[dir][scan8[k]], mv); |
|
} |
|
|
|
/* write back motion vectors */ |
|
fill_rectangle(s->cur_pic->motion_val[dir][b_xy], |
|
part_width >> 2, part_height >> 2, s->b_stride, |
|
pack16to32(mx, my), 4); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static av_always_inline void hl_decode_mb_idct_luma(SVQ3Context *s, |
|
int mb_type, const int *block_offset, |
|
int linesize, uint8_t *dest_y) |
|
{ |
|
int i; |
|
if (!IS_INTRA4x4(mb_type)) { |
|
for (i = 0; i < 16; i++) |
|
if (s->non_zero_count_cache[scan8[i]] || s->mb[i * 16]) { |
|
uint8_t *const ptr = dest_y + block_offset[i]; |
|
svq3_add_idct_c(ptr, s->mb + i * 16, linesize, |
|
s->qscale, IS_INTRA(mb_type) ? 1 : 0); |
|
} |
|
} |
|
} |
|
|
|
static av_always_inline int dctcoef_get(int16_t *mb, int index) |
|
{ |
|
return AV_RN16A(mb + index); |
|
} |
|
|
|
static av_always_inline void hl_decode_mb_predict_luma(SVQ3Context *s, |
|
int mb_type, |
|
const int *block_offset, |
|
int linesize, |
|
uint8_t *dest_y) |
|
{ |
|
int i; |
|
int qscale = s->qscale; |
|
|
|
if (IS_INTRA4x4(mb_type)) { |
|
for (i = 0; i < 16; i++) { |
|
uint8_t *const ptr = dest_y + block_offset[i]; |
|
const int dir = s->intra4x4_pred_mode_cache[scan8[i]]; |
|
|
|
uint8_t *topright; |
|
int nnz, tr; |
|
if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) { |
|
const int topright_avail = (s->topright_samples_available << i) & 0x8000; |
|
assert(s->mb_y || linesize <= block_offset[i]); |
|
if (!topright_avail) { |
|
tr = ptr[3 - linesize] * 0x01010101u; |
|
topright = (uint8_t *)&tr; |
|
} else |
|
topright = ptr + 4 - linesize; |
|
} else |
|
topright = NULL; |
|
|
|
s->hpc.pred4x4[dir](ptr, topright, linesize); |
|
nnz = s->non_zero_count_cache[scan8[i]]; |
|
if (nnz) { |
|
svq3_add_idct_c(ptr, s->mb + i * 16, linesize, qscale, 0); |
|
} |
|
} |
|
} else { |
|
s->hpc.pred16x16[s->intra16x16_pred_mode](dest_y, linesize); |
|
svq3_luma_dc_dequant_idct_c(s->mb, s->mb_luma_dc[0], qscale); |
|
} |
|
} |
|
|
|
static void hl_decode_mb(SVQ3Context *s) |
|
{ |
|
const int mb_x = s->mb_x; |
|
const int mb_y = s->mb_y; |
|
const int mb_xy = s->mb_xy; |
|
const int mb_type = s->cur_pic->mb_type[mb_xy]; |
|
uint8_t *dest_y, *dest_cb, *dest_cr; |
|
int linesize, uvlinesize; |
|
int i, j; |
|
const int *block_offset = &s->block_offset[0]; |
|
const int block_h = 16 >> 1; |
|
|
|
linesize = s->cur_pic->f->linesize[0]; |
|
uvlinesize = s->cur_pic->f->linesize[1]; |
|
|
|
dest_y = s->cur_pic->f->data[0] + (mb_x + mb_y * linesize) * 16; |
|
dest_cb = s->cur_pic->f->data[1] + mb_x * 8 + mb_y * uvlinesize * block_h; |
|
dest_cr = s->cur_pic->f->data[2] + mb_x * 8 + mb_y * uvlinesize * block_h; |
|
|
|
s->vdsp.prefetch(dest_y + (s->mb_x & 3) * 4 * linesize + 64, linesize, 4); |
|
s->vdsp.prefetch(dest_cb + (s->mb_x & 7) * uvlinesize + 64, dest_cr - dest_cb, 2); |
|
|
|
if (IS_INTRA(mb_type)) { |
|
s->hpc.pred8x8[s->chroma_pred_mode](dest_cb, uvlinesize); |
|
s->hpc.pred8x8[s->chroma_pred_mode](dest_cr, uvlinesize); |
|
|
|
hl_decode_mb_predict_luma(s, mb_type, block_offset, linesize, dest_y); |
|
} |
|
|
|
hl_decode_mb_idct_luma(s, mb_type, block_offset, linesize, dest_y); |
|
|
|
if (s->cbp & 0x30) { |
|
uint8_t *dest[2] = { dest_cb, dest_cr }; |
|
s->h264dsp.h264_chroma_dc_dequant_idct(s->mb + 16 * 16 * 1, |
|
s->dequant4_coeff[4][0]); |
|
s->h264dsp.h264_chroma_dc_dequant_idct(s->mb + 16 * 16 * 2, |
|
s->dequant4_coeff[4][0]); |
|
for (j = 1; j < 3; j++) { |
|
for (i = j * 16; i < j * 16 + 4; i++) |
|
if (s->non_zero_count_cache[scan8[i]] || s->mb[i * 16]) { |
|
uint8_t *const ptr = dest[j - 1] + block_offset[i]; |
|
svq3_add_idct_c(ptr, s->mb + i * 16, |
|
uvlinesize, ff_h264_chroma_qp[0][s->qscale + 12] - 12, 2); |
|
} |
|
} |
|
} |
|
} |
|
|
|
static int svq3_decode_mb(SVQ3Context *s, unsigned int mb_type) |
|
{ |
|
int i, j, k, m, dir, mode; |
|
int cbp = 0; |
|
uint32_t vlc; |
|
int8_t *top, *left; |
|
const int mb_xy = s->mb_xy; |
|
const int b_xy = 4 * s->mb_x + 4 * s->mb_y * s->b_stride; |
|
|
|
s->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF; |
|
s->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF; |
|
s->topright_samples_available = 0xFFFF; |
|
|
|
if (mb_type == 0) { /* SKIP */ |
|
if (s->pict_type == AV_PICTURE_TYPE_P || |
|
s->next_pic->mb_type[mb_xy] == -1) { |
|
svq3_mc_dir_part(s, 16 * s->mb_x, 16 * s->mb_y, 16, 16, |
|
0, 0, 0, 0, 0, 0); |
|
|
|
if (s->pict_type == AV_PICTURE_TYPE_B) |
|
svq3_mc_dir_part(s, 16 * s->mb_x, 16 * s->mb_y, 16, 16, |
|
0, 0, 0, 0, 1, 1); |
|
|
|
mb_type = MB_TYPE_SKIP; |
|
} else { |
|
mb_type = FFMIN(s->next_pic->mb_type[mb_xy], 6); |
|
if (svq3_mc_dir(s, mb_type, PREDICT_MODE, 0, 0) < 0) |
|
return -1; |
|
if (svq3_mc_dir(s, mb_type, PREDICT_MODE, 1, 1) < 0) |
|
return -1; |
|
|
|
mb_type = MB_TYPE_16x16; |
|
} |
|
} else if (mb_type < 8) { /* INTER */ |
|
if (s->thirdpel_flag && s->halfpel_flag == !get_bits1(&s->gb_slice)) |
|
mode = THIRDPEL_MODE; |
|
else if (s->halfpel_flag && |
|
s->thirdpel_flag == !get_bits1(&s->gb_slice)) |
|
mode = HALFPEL_MODE; |
|
else |
|
mode = FULLPEL_MODE; |
|
|
|
/* fill caches */ |
|
/* note ref_cache should contain here: |
|
* ???????? |
|
* ???11111 |
|
* N??11111 |
|
* N??11111 |
|
* N??11111 |
|
*/ |
|
|
|
for (m = 0; m < 2; m++) { |
|
if (s->mb_x > 0 && s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - 1] + 6] != -1) { |
|
for (i = 0; i < 4; i++) |
|
AV_COPY32(s->mv_cache[m][scan8[0] - 1 + i * 8], |
|
s->cur_pic->motion_val[m][b_xy - 1 + i * s->b_stride]); |
|
} else { |
|
for (i = 0; i < 4; i++) |
|
AV_ZERO32(s->mv_cache[m][scan8[0] - 1 + i * 8]); |
|
} |
|
if (s->mb_y > 0) { |
|
memcpy(s->mv_cache[m][scan8[0] - 1 * 8], |
|
s->cur_pic->motion_val[m][b_xy - s->b_stride], |
|
4 * 2 * sizeof(int16_t)); |
|
memset(&s->ref_cache[m][scan8[0] - 1 * 8], |
|
(s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1, 4); |
|
|
|
if (s->mb_x < s->mb_width - 1) { |
|
AV_COPY32(s->mv_cache[m][scan8[0] + 4 - 1 * 8], |
|
s->cur_pic->motion_val[m][b_xy - s->b_stride + 4]); |
|
s->ref_cache[m][scan8[0] + 4 - 1 * 8] = |
|
(s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride + 1] + 6] == -1 || |
|
s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1; |
|
} else |
|
s->ref_cache[m][scan8[0] + 4 - 1 * 8] = PART_NOT_AVAILABLE; |
|
if (s->mb_x > 0) { |
|
AV_COPY32(s->mv_cache[m][scan8[0] - 1 - 1 * 8], |
|
s->cur_pic->motion_val[m][b_xy - s->b_stride - 1]); |
|
s->ref_cache[m][scan8[0] - 1 - 1 * 8] = |
|
(s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride - 1] + 3] == -1) ? PART_NOT_AVAILABLE : 1; |
|
} else |
|
s->ref_cache[m][scan8[0] - 1 - 1 * 8] = PART_NOT_AVAILABLE; |
|
} else |
|
memset(&s->ref_cache[m][scan8[0] - 1 * 8 - 1], |
|
PART_NOT_AVAILABLE, 8); |
|
|
|
if (s->pict_type != AV_PICTURE_TYPE_B) |
|
break; |
|
} |
|
|
|
/* decode motion vector(s) and form prediction(s) */ |
|
if (s->pict_type == AV_PICTURE_TYPE_P) { |
|
if (svq3_mc_dir(s, mb_type - 1, mode, 0, 0) < 0) |
|
return -1; |
|
} else { /* AV_PICTURE_TYPE_B */ |
|
if (mb_type != 2) { |
|
if (svq3_mc_dir(s, 0, mode, 0, 0) < 0) |
|
return -1; |
|
} else { |
|
for (i = 0; i < 4; i++) |
|
memset(s->cur_pic->motion_val[0][b_xy + i * s->b_stride], |
|
0, 4 * 2 * sizeof(int16_t)); |
|
} |
|
if (mb_type != 1) { |
|
if (svq3_mc_dir(s, 0, mode, 1, mb_type == 3) < 0) |
|
return -1; |
|
} else { |
|
for (i = 0; i < 4; i++) |
|
memset(s->cur_pic->motion_val[1][b_xy + i * s->b_stride], |
|
0, 4 * 2 * sizeof(int16_t)); |
|
} |
|
} |
|
|
|
mb_type = MB_TYPE_16x16; |
|
} else if (mb_type == 8 || mb_type == 33) { /* INTRA4x4 */ |
|
int8_t *i4x4 = s->intra4x4_pred_mode + s->mb2br_xy[s->mb_xy]; |
|
int8_t *i4x4_cache = s->intra4x4_pred_mode_cache; |
|
|
|
memset(s->intra4x4_pred_mode_cache, -1, 8 * 5 * sizeof(int8_t)); |
|
|
|
if (mb_type == 8) { |
|
if (s->mb_x > 0) { |
|
for (i = 0; i < 4; i++) |
|
s->intra4x4_pred_mode_cache[scan8[0] - 1 + i * 8] = s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - 1] + 6 - i]; |
|
if (s->intra4x4_pred_mode_cache[scan8[0] - 1] == -1) |
|
s->left_samples_available = 0x5F5F; |
|
} |
|
if (s->mb_y > 0) { |
|
s->intra4x4_pred_mode_cache[4 + 8 * 0] = s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride] + 0]; |
|
s->intra4x4_pred_mode_cache[5 + 8 * 0] = s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride] + 1]; |
|
s->intra4x4_pred_mode_cache[6 + 8 * 0] = s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride] + 2]; |
|
s->intra4x4_pred_mode_cache[7 + 8 * 0] = s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride] + 3]; |
|
|
|
if (s->intra4x4_pred_mode_cache[4 + 8 * 0] == -1) |
|
s->top_samples_available = 0x33FF; |
|
} |
|
|
|
/* decode prediction codes for luma blocks */ |
|
for (i = 0; i < 16; i += 2) { |
|
vlc = get_interleaved_ue_golomb(&s->gb_slice); |
|
|
|
if (vlc >= 25) { |
|
av_log(s->avctx, AV_LOG_ERROR, |
|
"luma prediction:%"PRIu32"\n", vlc); |
|
return -1; |
|
} |
|
|
|
left = &s->intra4x4_pred_mode_cache[scan8[i] - 1]; |
|
top = &s->intra4x4_pred_mode_cache[scan8[i] - 8]; |
|
|
|
left[1] = svq3_pred_1[top[0] + 1][left[0] + 1][svq3_pred_0[vlc][0]]; |
|
left[2] = svq3_pred_1[top[1] + 1][left[1] + 1][svq3_pred_0[vlc][1]]; |
|
|
|
if (left[1] == -1 || left[2] == -1) { |
|
av_log(s->avctx, AV_LOG_ERROR, "weird prediction\n"); |
|
return -1; |
|
} |
|
} |
|
} else { /* mb_type == 33, DC_128_PRED block type */ |
|
for (i = 0; i < 4; i++) |
|
memset(&s->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_PRED, 4); |
|
} |
|
|
|
AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4); |
|
i4x4[4] = i4x4_cache[7 + 8 * 3]; |
|
i4x4[5] = i4x4_cache[7 + 8 * 2]; |
|
i4x4[6] = i4x4_cache[7 + 8 * 1]; |
|
|
|
if (mb_type == 8) { |
|
ff_h264_check_intra4x4_pred_mode(s->intra4x4_pred_mode_cache, |
|
s->avctx, s->top_samples_available, |
|
s->left_samples_available); |
|
|
|
s->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF; |
|
s->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF; |
|
} else { |
|
for (i = 0; i < 4; i++) |
|
memset(&s->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_128_PRED, 4); |
|
|
|
s->top_samples_available = 0x33FF; |
|
s->left_samples_available = 0x5F5F; |
|
} |
|
|
|
mb_type = MB_TYPE_INTRA4x4; |
|
} else { /* INTRA16x16 */ |
|
dir = ff_h264_i_mb_type_info[mb_type - 8].pred_mode; |
|
dir = (dir >> 1) ^ 3 * (dir & 1) ^ 1; |
|
|
|
if ((s->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(s->avctx, s->top_samples_available, |
|
s->left_samples_available, dir, 0)) < 0) { |
|
av_log(s->avctx, AV_LOG_ERROR, "ff_h264_check_intra_pred_mode < 0\n"); |
|
return s->intra16x16_pred_mode; |
|
} |
|
|
|
cbp = ff_h264_i_mb_type_info[mb_type - 8].cbp; |
|
mb_type = MB_TYPE_INTRA16x16; |
|
} |
|
|
|
if (!IS_INTER(mb_type) && s->pict_type != AV_PICTURE_TYPE_I) { |
|
for (i = 0; i < 4; i++) |
|
memset(s->cur_pic->motion_val[0][b_xy + i * s->b_stride], |
|
0, 4 * 2 * sizeof(int16_t)); |
|
if (s->pict_type == AV_PICTURE_TYPE_B) { |
|
for (i = 0; i < 4; i++) |
|
memset(s->cur_pic->motion_val[1][b_xy + i * s->b_stride], |
|
0, 4 * 2 * sizeof(int16_t)); |
|
} |
|
} |
|
if (!IS_INTRA4x4(mb_type)) { |
|
memset(s->intra4x4_pred_mode + s->mb2br_xy[mb_xy], DC_PRED, 8); |
|
} |
|
if (!IS_SKIP(mb_type) || s->pict_type == AV_PICTURE_TYPE_B) { |
|
memset(s->non_zero_count_cache + 8, 0, 14 * 8 * sizeof(uint8_t)); |
|
} |
|
|
|
if (!IS_INTRA16x16(mb_type) && |
|
(!IS_SKIP(mb_type) || s->pict_type == AV_PICTURE_TYPE_B)) { |
|
if ((vlc = get_interleaved_ue_golomb(&s->gb_slice)) >= 48) { |
|
av_log(s->avctx, AV_LOG_ERROR, "cbp_vlc=%"PRIu32"\n", vlc); |
|
return -1; |
|
} |
|
|
|
cbp = IS_INTRA(mb_type) ? ff_h264_golomb_to_intra4x4_cbp[vlc] |
|
: ff_h264_golomb_to_inter_cbp[vlc]; |
|
} |
|
if (IS_INTRA16x16(mb_type) || |
|
(s->pict_type != AV_PICTURE_TYPE_I && s->adaptive_quant && cbp)) { |
|
s->qscale += get_interleaved_se_golomb(&s->gb_slice); |
|
|
|
if (s->qscale > 31u) { |
|
av_log(s->avctx, AV_LOG_ERROR, "qscale:%d\n", s->qscale); |
|
return -1; |
|
} |
|
} |
|
if (IS_INTRA16x16(mb_type)) { |
|
AV_ZERO128(s->mb_luma_dc[0] + 0); |
|
AV_ZERO128(s->mb_luma_dc[0] + 8); |
|
if (svq3_decode_block(&s->gb_slice, s->mb_luma_dc[0], 0, 1)) { |
|
av_log(s->avctx, AV_LOG_ERROR, |
|
"error while decoding intra luma dc\n"); |
|
return -1; |
|
} |
|
} |
|
|
|
if (cbp) { |
|
const int index = IS_INTRA16x16(mb_type) ? 1 : 0; |
|
const int type = ((s->qscale < 24 && IS_INTRA4x4(mb_type)) ? 2 : 1); |
|
|
|
for (i = 0; i < 4; i++) |
|
if ((cbp & (1 << i))) { |
|
for (j = 0; j < 4; j++) { |
|
k = index ? (1 * (j & 1) + 2 * (i & 1) + |
|
2 * (j & 2) + 4 * (i & 2)) |
|
: (4 * i + j); |
|
s->non_zero_count_cache[scan8[k]] = 1; |
|
|
|
if (svq3_decode_block(&s->gb_slice, &s->mb[16 * k], index, type)) { |
|
av_log(s->avctx, AV_LOG_ERROR, |
|
"error while decoding block\n"); |
|
return -1; |
|
} |
|
} |
|
} |
|
|
|
if ((cbp & 0x30)) { |
|
for (i = 1; i < 3; ++i) |
|
if (svq3_decode_block(&s->gb_slice, &s->mb[16 * 16 * i], 0, 3)) { |
|
av_log(s->avctx, AV_LOG_ERROR, |
|
"error while decoding chroma dc block\n"); |
|
return -1; |
|
} |
|
|
|
if ((cbp & 0x20)) { |
|
for (i = 1; i < 3; i++) { |
|
for (j = 0; j < 4; j++) { |
|
k = 16 * i + j; |
|
s->non_zero_count_cache[scan8[k]] = 1; |
|
|
|
if (svq3_decode_block(&s->gb_slice, &s->mb[16 * k], 1, 1)) { |
|
av_log(s->avctx, AV_LOG_ERROR, |
|
"error while decoding chroma ac block\n"); |
|
return -1; |
|
} |
|
} |
|
} |
|
} |
|
} |
|
} |
|
|
|
s->cbp = cbp; |
|
s->cur_pic->mb_type[mb_xy] = mb_type; |
|
|
|
if (IS_INTRA(mb_type)) |
|
s->chroma_pred_mode = ff_h264_check_intra_pred_mode(s->avctx, s->top_samples_available, |
|
s->left_samples_available, DC_PRED8x8, 1); |
|
|
|
return 0; |
|
} |
|
|
|
static int svq3_decode_slice_header(AVCodecContext *avctx) |
|
{ |
|
SVQ3Context *s = avctx->priv_data; |
|
const int mb_xy = s->mb_xy; |
|
int i, header; |
|
unsigned slice_id; |
|
|
|
header = get_bits(&s->gb, 8); |
|
|
|
if (((header & 0x9F) != 1 && (header & 0x9F) != 2) || (header & 0x60) == 0) { |
|
/* TODO: what? */ |
|
av_log(avctx, AV_LOG_ERROR, "unsupported slice header (%02X)\n", header); |
|
return -1; |
|
} else { |
|
int slice_bits, slice_bytes, slice_length; |
|
int length = header >> 5 & 3; |
|
|
|
slice_length = show_bits(&s->gb, 8 * length); |
|
slice_bits = slice_length * 8; |
|
slice_bytes = slice_length + length - 1; |
|
|
|
if (slice_bytes > get_bits_left(&s->gb)) { |
|
av_log(avctx, AV_LOG_ERROR, "slice after bitstream end\n"); |
|
return -1; |
|
} |
|
|
|
skip_bits(&s->gb, 8); |
|
|
|
av_fast_malloc(&s->slice_buf, &s->slice_size, slice_bytes + AV_INPUT_BUFFER_PADDING_SIZE); |
|
if (!s->slice_buf) |
|
return AVERROR(ENOMEM); |
|
|
|
memcpy(s->slice_buf, s->gb.buffer + s->gb.index / 8, slice_bytes); |
|
|
|
init_get_bits(&s->gb_slice, s->slice_buf, slice_bits); |
|
|
|
if (s->watermark_key) { |
|
uint32_t header = AV_RL32(&s->gb_slice.buffer[1]); |
|
AV_WL32(&s->gb_slice.buffer[1], header ^ s->watermark_key); |
|
} |
|
if (length > 0) { |
|
memcpy(s->slice_buf, &s->slice_buf[slice_length], length - 1); |
|
} |
|
skip_bits_long(&s->gb, slice_bytes * 8); |
|
} |
|
|
|
if ((slice_id = get_interleaved_ue_golomb(&s->gb_slice)) >= 3) { |
|
av_log(s->avctx, AV_LOG_ERROR, "illegal slice type %u \n", slice_id); |
|
return -1; |
|
} |
|
|
|
s->pict_type = ff_h264_golomb_to_pict_type[slice_id]; |
|
|
|
if ((header & 0x9F) == 2) { |
|
i = (s->mb_num < 64) ? 6 : (1 + av_log2(s->mb_num - 1)); |
|
get_bits(&s->gb_slice, i); |
|
} else { |
|
skip_bits1(&s->gb_slice); |
|
} |
|
|
|
s->slice_num = get_bits(&s->gb_slice, 8); |
|
s->qscale = get_bits(&s->gb_slice, 5); |
|
s->adaptive_quant = get_bits1(&s->gb_slice); |
|
|
|
/* unknown fields */ |
|
skip_bits1(&s->gb_slice); |
|
|
|
if (s->unknown_flag) |
|
skip_bits1(&s->gb_slice); |
|
|
|
skip_bits1(&s->gb_slice); |
|
skip_bits(&s->gb_slice, 2); |
|
|
|
while (get_bits1(&s->gb_slice)) |
|
skip_bits(&s->gb_slice, 8); |
|
|
|
/* reset intra predictors and invalidate motion vector references */ |
|
if (s->mb_x > 0) { |
|
memset(s->intra4x4_pred_mode + s->mb2br_xy[mb_xy - 1] + 3, |
|
-1, 4 * sizeof(int8_t)); |
|
memset(s->intra4x4_pred_mode + s->mb2br_xy[mb_xy - s->mb_x], |
|
-1, 8 * sizeof(int8_t) * s->mb_x); |
|
} |
|
if (s->mb_y > 0) { |
|
memset(s->intra4x4_pred_mode + s->mb2br_xy[mb_xy - s->mb_stride], |
|
-1, 8 * sizeof(int8_t) * (s->mb_width - s->mb_x)); |
|
|
|
if (s->mb_x > 0) |
|
s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride - 1] + 3] = -1; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void init_dequant4_coeff_table(SVQ3Context *s) |
|
{ |
|
int q, x; |
|
const int max_qp = 51; |
|
|
|
for (q = 0; q < max_qp + 1; q++) { |
|
int shift = ff_h264_quant_div6[q] + 2; |
|
int idx = ff_h264_quant_rem6[q]; |
|
for (x = 0; x < 16; x++) |
|
s->dequant4_coeff[q][(x >> 2) | ((x << 2) & 0xF)] = |
|
((uint32_t)ff_h264_dequant4_coeff_init[idx][(x & 1) + ((x >> 2) & 1)] * 16) << shift; |
|
} |
|
} |
|
|
|
static av_cold int svq3_decode_init(AVCodecContext *avctx) |
|
{ |
|
SVQ3Context *s = avctx->priv_data; |
|
int m, x, y; |
|
unsigned char *extradata; |
|
unsigned char *extradata_end; |
|
unsigned int size; |
|
int marker_found = 0; |
|
|
|
s->cur_pic = av_mallocz(sizeof(*s->cur_pic)); |
|
s->last_pic = av_mallocz(sizeof(*s->last_pic)); |
|
s->next_pic = av_mallocz(sizeof(*s->next_pic)); |
|
if (!s->next_pic || !s->last_pic || !s->cur_pic) { |
|
av_freep(&s->cur_pic); |
|
av_freep(&s->last_pic); |
|
av_freep(&s->next_pic); |
|
return AVERROR(ENOMEM); |
|
} |
|
|
|
s->cur_pic->f = av_frame_alloc(); |
|
s->last_pic->f = av_frame_alloc(); |
|
s->next_pic->f = av_frame_alloc(); |
|
if (!s->cur_pic->f || !s->last_pic->f || !s->next_pic->f) |
|
return AVERROR(ENOMEM); |
|
|
|
ff_h264dsp_init(&s->h264dsp, 8, 1); |
|
ff_h264_pred_init(&s->hpc, AV_CODEC_ID_SVQ3, 8, 1); |
|
ff_videodsp_init(&s->vdsp, 8); |
|
|
|
ff_hpeldsp_init(&s->hdsp, avctx->flags); |
|
ff_tpeldsp_init(&s->tdsp); |
|
|
|
avctx->pix_fmt = AV_PIX_FMT_YUVJ420P; |
|
avctx->color_range = AVCOL_RANGE_JPEG; |
|
|
|
s->avctx = avctx; |
|
s->halfpel_flag = 1; |
|
s->thirdpel_flag = 1; |
|
s->unknown_flag = 0; |
|
|
|
/* prowl for the "SEQH" marker in the extradata */ |
|
extradata = (unsigned char *)avctx->extradata; |
|
extradata_end = avctx->extradata + avctx->extradata_size; |
|
if (extradata) { |
|
for (m = 0; m + 8 < avctx->extradata_size; m++) { |
|
if (!memcmp(extradata, "SEQH", 4)) { |
|
marker_found = 1; |
|
break; |
|
} |
|
extradata++; |
|
} |
|
} |
|
|
|
/* if a match was found, parse the extra data */ |
|
if (marker_found) { |
|
GetBitContext gb; |
|
int frame_size_code; |
|
|
|
size = AV_RB32(&extradata[4]); |
|
if (size > extradata_end - extradata - 8) |
|
return AVERROR_INVALIDDATA; |
|
init_get_bits(&gb, extradata + 8, size * 8); |
|
|
|
/* 'frame size code' and optional 'width, height' */ |
|
frame_size_code = get_bits(&gb, 3); |
|
switch (frame_size_code) { |
|
case 0: |
|
avctx->width = 160; |
|
avctx->height = 120; |
|
break; |
|
case 1: |
|
avctx->width = 128; |
|
avctx->height = 96; |
|
break; |
|
case 2: |
|
avctx->width = 176; |
|
avctx->height = 144; |
|
break; |
|
case 3: |
|
avctx->width = 352; |
|
avctx->height = 288; |
|
break; |
|
case 4: |
|
avctx->width = 704; |
|
avctx->height = 576; |
|
break; |
|
case 5: |
|
avctx->width = 240; |
|
avctx->height = 180; |
|
break; |
|
case 6: |
|
avctx->width = 320; |
|
avctx->height = 240; |
|
break; |
|
case 7: |
|
avctx->width = get_bits(&gb, 12); |
|
avctx->height = get_bits(&gb, 12); |
|
break; |
|
} |
|
|
|
s->halfpel_flag = get_bits1(&gb); |
|
s->thirdpel_flag = get_bits1(&gb); |
|
|
|
/* unknown fields */ |
|
skip_bits1(&gb); |
|
skip_bits1(&gb); |
|
skip_bits1(&gb); |
|
skip_bits1(&gb); |
|
|
|
s->low_delay = get_bits1(&gb); |
|
|
|
/* unknown field */ |
|
skip_bits1(&gb); |
|
|
|
while (get_bits1(&gb)) |
|
skip_bits(&gb, 8); |
|
|
|
s->unknown_flag = get_bits1(&gb); |
|
avctx->has_b_frames = !s->low_delay; |
|
if (s->unknown_flag) { |
|
#if CONFIG_ZLIB |
|
unsigned watermark_width = get_interleaved_ue_golomb(&gb); |
|
unsigned watermark_height = get_interleaved_ue_golomb(&gb); |
|
int u1 = get_interleaved_ue_golomb(&gb); |
|
int u2 = get_bits(&gb, 8); |
|
int u3 = get_bits(&gb, 2); |
|
int u4 = get_interleaved_ue_golomb(&gb); |
|
unsigned long buf_len = watermark_width * |
|
watermark_height * 4; |
|
int offset = get_bits_count(&gb) + 7 >> 3; |
|
uint8_t *buf; |
|
|
|
if (watermark_height > 0 && |
|
(uint64_t)watermark_width * 4 > UINT_MAX / watermark_height) |
|
return -1; |
|
|
|
buf = av_malloc(buf_len); |
|
av_log(avctx, AV_LOG_DEBUG, "watermark size: %ux%u\n", |
|
watermark_width, watermark_height); |
|
av_log(avctx, AV_LOG_DEBUG, |
|
"u1: %x u2: %x u3: %x compressed data size: %d offset: %d\n", |
|
u1, u2, u3, u4, offset); |
|
if (uncompress(buf, &buf_len, extradata + 8 + offset, |
|
size - offset) != Z_OK) { |
|
av_log(avctx, AV_LOG_ERROR, |
|
"could not uncompress watermark logo\n"); |
|
av_free(buf); |
|
return -1; |
|
} |
|
s->watermark_key = ff_svq1_packet_checksum(buf, buf_len, 0); |
|
s->watermark_key = s->watermark_key << 16 | s->watermark_key; |
|
av_log(avctx, AV_LOG_DEBUG, |
|
"watermark key %#"PRIx32"\n", s->watermark_key); |
|
av_free(buf); |
|
#else |
|
av_log(avctx, AV_LOG_ERROR, |
|
"this svq3 file contains watermark which need zlib support compiled in\n"); |
|
return -1; |
|
#endif |
|
} |
|
} |
|
|
|
s->mb_width = (avctx->width + 15) / 16; |
|
s->mb_height = (avctx->height + 15) / 16; |
|
s->mb_stride = s->mb_width + 1; |
|
s->mb_num = s->mb_width * s->mb_height; |
|
s->b_stride = 4 * s->mb_width; |
|
s->h_edge_pos = s->mb_width * 16; |
|
s->v_edge_pos = s->mb_height * 16; |
|
|
|
s->intra4x4_pred_mode = av_mallocz(s->mb_stride * 2 * 8); |
|
if (!s->intra4x4_pred_mode) |
|
return AVERROR(ENOMEM); |
|
|
|
s->mb2br_xy = av_mallocz(s->mb_stride * (s->mb_height + 1) * |
|
sizeof(*s->mb2br_xy)); |
|
if (!s->mb2br_xy) |
|
return AVERROR(ENOMEM); |
|
|
|
for (y = 0; y < s->mb_height; y++) |
|
for (x = 0; x < s->mb_width; x++) { |
|
const int mb_xy = x + y * s->mb_stride; |
|
|
|
s->mb2br_xy[mb_xy] = 8 * (mb_xy % (2 * s->mb_stride)); |
|
} |
|
|
|
init_dequant4_coeff_table(s); |
|
|
|
return 0; |
|
} |
|
|
|
static void free_picture(AVCodecContext *avctx, H264Picture *pic) |
|
{ |
|
int i; |
|
for (i = 0; i < 2; i++) { |
|
av_buffer_unref(&pic->motion_val_buf[i]); |
|
av_buffer_unref(&pic->ref_index_buf[i]); |
|
} |
|
av_buffer_unref(&pic->mb_type_buf); |
|
|
|
av_frame_unref(pic->f); |
|
} |
|
|
|
static int get_buffer(AVCodecContext *avctx, H264Picture *pic) |
|
{ |
|
SVQ3Context *s = avctx->priv_data; |
|
const int big_mb_num = s->mb_stride * (s->mb_height + 1) + 1; |
|
const int mb_array_size = s->mb_stride * s->mb_height; |
|
const int b4_stride = s->mb_width * 4 + 1; |
|
const int b4_array_size = b4_stride * s->mb_height * 4; |
|
int ret; |
|
|
|
if (!pic->motion_val_buf[0]) { |
|
int i; |
|
|
|
pic->mb_type_buf = av_buffer_allocz((big_mb_num + s->mb_stride) * sizeof(uint32_t)); |
|
if (!pic->mb_type_buf) |
|
return AVERROR(ENOMEM); |
|
pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * s->mb_stride + 1; |
|
|
|
for (i = 0; i < 2; i++) { |
|
pic->motion_val_buf[i] = av_buffer_allocz(2 * (b4_array_size + 4) * sizeof(int16_t)); |
|
pic->ref_index_buf[i] = av_buffer_allocz(4 * mb_array_size); |
|
if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i]) { |
|
ret = AVERROR(ENOMEM); |
|
goto fail; |
|
} |
|
|
|
pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4; |
|
pic->ref_index[i] = pic->ref_index_buf[i]->data; |
|
} |
|
} |
|
pic->reference = !(s->pict_type == AV_PICTURE_TYPE_B); |
|
|
|
ret = ff_get_buffer(avctx, pic->f, |
|
pic->reference ? AV_GET_BUFFER_FLAG_REF : 0); |
|
if (ret < 0) |
|
goto fail; |
|
|
|
if (!s->edge_emu_buffer) { |
|
s->edge_emu_buffer = av_mallocz(pic->f->linesize[0] * 17); |
|
if (!s->edge_emu_buffer) |
|
return AVERROR(ENOMEM); |
|
} |
|
|
|
return 0; |
|
fail: |
|
free_picture(avctx, pic); |
|
return ret; |
|
} |
|
|
|
static int svq3_decode_frame(AVCodecContext *avctx, void *data, |
|
int *got_frame, AVPacket *avpkt) |
|
{ |
|
const uint8_t *buf = avpkt->data; |
|
SVQ3Context *s = avctx->priv_data; |
|
int buf_size = avpkt->size; |
|
int ret, m, i; |
|
|
|
/* special case for last picture */ |
|
if (buf_size == 0) { |
|
if (s->next_pic->f->data[0] && !s->low_delay && !s->last_frame_output) { |
|
ret = av_frame_ref(data, s->next_pic->f); |
|
if (ret < 0) |
|
return ret; |
|
s->last_frame_output = 1; |
|
*got_frame = 1; |
|
} |
|
return 0; |
|
} |
|
|
|
ret = init_get_bits(&s->gb, buf, 8 * buf_size); |
|
if (ret < 0) |
|
return ret; |
|
|
|
s->mb_x = s->mb_y = s->mb_xy = 0; |
|
|
|
if (svq3_decode_slice_header(avctx)) |
|
return -1; |
|
|
|
if (s->pict_type != AV_PICTURE_TYPE_B) |
|
FFSWAP(H264Picture*, s->next_pic, s->last_pic); |
|
|
|
av_frame_unref(s->cur_pic->f); |
|
|
|
/* for skipping the frame */ |
|
s->cur_pic->f->pict_type = s->pict_type; |
|
s->cur_pic->f->key_frame = (s->pict_type == AV_PICTURE_TYPE_I); |
|
|
|
ret = get_buffer(avctx, s->cur_pic); |
|
if (ret < 0) |
|
return ret; |
|
|
|
for (i = 0; i < 16; i++) { |
|
s->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 4 * s->cur_pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3); |
|
s->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 8 * s->cur_pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3); |
|
} |
|
for (i = 0; i < 16; i++) { |
|
s->block_offset[16 + i] = |
|
s->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 4 * s->cur_pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3); |
|
s->block_offset[48 + 16 + i] = |
|
s->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 8 * s->cur_pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3); |
|
} |
|
|
|
if (s->pict_type != AV_PICTURE_TYPE_I) { |
|
if (!s->last_pic->f->data[0]) { |
|
av_log(avctx, AV_LOG_ERROR, "Missing reference frame.\n"); |
|
ret = get_buffer(avctx, s->last_pic); |
|
if (ret < 0) |
|
return ret; |
|
memset(s->last_pic->f->data[0], 0, avctx->height * s->last_pic->f->linesize[0]); |
|
memset(s->last_pic->f->data[1], 0x80, (avctx->height / 2) * |
|
s->last_pic->f->linesize[1]); |
|
memset(s->last_pic->f->data[2], 0x80, (avctx->height / 2) * |
|
s->last_pic->f->linesize[2]); |
|
} |
|
|
|
if (s->pict_type == AV_PICTURE_TYPE_B && !s->next_pic->f->data[0]) { |
|
av_log(avctx, AV_LOG_ERROR, "Missing reference frame.\n"); |
|
ret = get_buffer(avctx, s->next_pic); |
|
if (ret < 0) |
|
return ret; |
|
memset(s->next_pic->f->data[0], 0, avctx->height * s->next_pic->f->linesize[0]); |
|
memset(s->next_pic->f->data[1], 0x80, (avctx->height / 2) * |
|
s->next_pic->f->linesize[1]); |
|
memset(s->next_pic->f->data[2], 0x80, (avctx->height / 2) * |
|
s->next_pic->f->linesize[2]); |
|
} |
|
} |
|
|
|
if (avctx->debug & FF_DEBUG_PICT_INFO) |
|
av_log(s->avctx, AV_LOG_DEBUG, |
|
"%c hpel:%d, tpel:%d aqp:%d qp:%d, slice_num:%02X\n", |
|
av_get_picture_type_char(s->pict_type), |
|
s->halfpel_flag, s->thirdpel_flag, |
|
s->adaptive_quant, s->qscale, s->slice_num); |
|
|
|
if (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B || |
|
avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I || |
|
avctx->skip_frame >= AVDISCARD_ALL) |
|
return 0; |
|
|
|
if (s->next_p_frame_damaged) { |
|
if (s->pict_type == AV_PICTURE_TYPE_B) |
|
return 0; |
|
else |
|
s->next_p_frame_damaged = 0; |
|
} |
|
|
|
if (s->pict_type == AV_PICTURE_TYPE_B) { |
|
s->frame_num_offset = s->slice_num - s->prev_frame_num; |
|
|
|
if (s->frame_num_offset < 0) |
|
s->frame_num_offset += 256; |
|
if (s->frame_num_offset == 0 || |
|
s->frame_num_offset >= s->prev_frame_num_offset) { |
|
av_log(s->avctx, AV_LOG_ERROR, "error in B-frame picture id\n"); |
|
return -1; |
|
} |
|
} else { |
|
s->prev_frame_num = s->frame_num; |
|
s->frame_num = s->slice_num; |
|
s->prev_frame_num_offset = s->frame_num - s->prev_frame_num; |
|
|
|
if (s->prev_frame_num_offset < 0) |
|
s->prev_frame_num_offset += 256; |
|
} |
|
|
|
for (m = 0; m < 2; m++) { |
|
int i; |
|
for (i = 0; i < 4; i++) { |
|
int j; |
|
for (j = -1; j < 4; j++) |
|
s->ref_cache[m][scan8[0] + 8 * i + j] = 1; |
|
if (i < 3) |
|
s->ref_cache[m][scan8[0] + 8 * i + j] = PART_NOT_AVAILABLE; |
|
} |
|
} |
|
|
|
for (s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) { |
|
for (s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) { |
|
unsigned mb_type; |
|
s->mb_xy = s->mb_x + s->mb_y * s->mb_stride; |
|
|
|
if ((get_bits_left(&s->gb_slice)) <= 7) { |
|
if (((get_bits_count(&s->gb_slice) & 7) == 0 || |
|
show_bits(&s->gb_slice, get_bits_left(&s->gb_slice) & 7) == 0)) { |
|
|
|
if (svq3_decode_slice_header(avctx)) |
|
return -1; |
|
} |
|
/* TODO: support s->mb_skip_run */ |
|
} |
|
|
|
mb_type = get_interleaved_ue_golomb(&s->gb_slice); |
|
|
|
if (s->pict_type == AV_PICTURE_TYPE_I) |
|
mb_type += 8; |
|
else if (s->pict_type == AV_PICTURE_TYPE_B && mb_type >= 4) |
|
mb_type += 4; |
|
if (mb_type > 33 || svq3_decode_mb(s, mb_type)) { |
|
av_log(s->avctx, AV_LOG_ERROR, |
|
"error while decoding MB %d %d\n", s->mb_x, s->mb_y); |
|
return -1; |
|
} |
|
|
|
if (mb_type != 0) |
|
hl_decode_mb(s); |
|
|
|
if (s->pict_type != AV_PICTURE_TYPE_B && !s->low_delay) |
|
s->cur_pic->mb_type[s->mb_x + s->mb_y * s->mb_stride] = |
|
(s->pict_type == AV_PICTURE_TYPE_P && mb_type < 8) ? (mb_type - 1) : -1; |
|
} |
|
|
|
ff_draw_horiz_band(avctx, s->cur_pic->f, |
|
s->last_pic->f->data[0] ? s->last_pic->f : NULL, |
|
16 * s->mb_y, 16, PICT_FRAME, 0, |
|
s->low_delay); |
|
} |
|
|
|
if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) |
|
ret = av_frame_ref(data, s->cur_pic->f); |
|
else if (s->last_pic->f->data[0]) |
|
ret = av_frame_ref(data, s->last_pic->f); |
|
if (ret < 0) |
|
return ret; |
|
|
|
/* Do not output the last pic after seeking. */ |
|
if (s->last_pic->f->data[0] || s->low_delay) |
|
*got_frame = 1; |
|
|
|
if (s->pict_type != AV_PICTURE_TYPE_B) { |
|
FFSWAP(H264Picture*, s->cur_pic, s->next_pic); |
|
} else { |
|
av_frame_unref(s->cur_pic->f); |
|
} |
|
|
|
return buf_size; |
|
} |
|
|
|
static av_cold int svq3_decode_end(AVCodecContext *avctx) |
|
{ |
|
SVQ3Context *s = avctx->priv_data; |
|
|
|
free_picture(avctx, s->cur_pic); |
|
free_picture(avctx, s->next_pic); |
|
free_picture(avctx, s->last_pic); |
|
av_frame_free(&s->cur_pic->f); |
|
av_frame_free(&s->next_pic->f); |
|
av_frame_free(&s->last_pic->f); |
|
av_freep(&s->cur_pic); |
|
av_freep(&s->next_pic); |
|
av_freep(&s->last_pic); |
|
av_freep(&s->slice_buf); |
|
av_freep(&s->intra4x4_pred_mode); |
|
av_freep(&s->edge_emu_buffer); |
|
av_freep(&s->mb2br_xy); |
|
|
|
return 0; |
|
} |
|
|
|
AVCodec ff_svq3_decoder = { |
|
.name = "svq3", |
|
.long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 3 / Sorenson Video 3 / SVQ3"), |
|
.type = AVMEDIA_TYPE_VIDEO, |
|
.id = AV_CODEC_ID_SVQ3, |
|
.priv_data_size = sizeof(SVQ3Context), |
|
.init = svq3_decode_init, |
|
.close = svq3_decode_end, |
|
.decode = svq3_decode_frame, |
|
.capabilities = AV_CODEC_CAP_DRAW_HORIZ_BAND | |
|
AV_CODEC_CAP_DR1 | |
|
AV_CODEC_CAP_DELAY, |
|
.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P, |
|
AV_PIX_FMT_NONE}, |
|
};
|
|
|