7dee5f04ac
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
1209 lines
43 KiB
C
1209 lines
43 KiB
C
/*
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* Copyright (c) 2003 The FFmpeg Project
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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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/*
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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.mplayerhq.hu/V-codecs/SVQ3/Vertical400kbit.sorenson3.mov
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*/
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#include "internal.h"
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#include "dsputil.h"
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#include "avcodec.h"
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#include "mpegvideo.h"
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#include "h264.h"
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#include "h264data.h" // FIXME FIXME FIXME
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#include "h264_mvpred.h"
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#include "golomb.h"
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#include "rectangle.h"
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#include "vdpau_internal.h"
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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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* @file
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* svq3 decoder.
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*/
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typedef struct {
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H264Context h;
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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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int next_slice_index;
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uint32_t watermark_key;
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uint8_t *buf;
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int buf_size;
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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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/* dual scan (from some older h264 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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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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void ff_svq3_luma_dc_dequant_idct_c(DCTELEM *output, DCTELEM *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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void ff_svq3_add_idct_c(uint8_t *dst, DCTELEM *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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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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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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static inline int svq3_decode_block(GetBitContext *gb, DCTELEM *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, zigzag_scan, svq3_scan, chroma_dc_scan };
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int run, level, sign, 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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for (limit = (16 >> intra); index < 16; index = limit, limit += 8) {
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for (; (vlc = svq3_get_ue_golomb(gb)) != 0; index++) {
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if ((int32_t)vlc < 0)
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return -1;
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sign = (vlc & 1) ? 0 : -1;
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vlc = vlc + 1 >> 1;
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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 < 16U) {
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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) + ((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) + ((run == 0) ? 4 : ((run < 3) ? 2 : ((run < 10) ? 1 : 0)));
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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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block[scan[index]] = (level ^ sign) - sign;
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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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return 0;
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}
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static inline void svq3_mc_dir_part(MpegEncContext *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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{
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const Picture *pic = (dir == 0) ? &s->last_picture : &s->next_picture;
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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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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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if ((s->flags & CODEC_FLAG_EMU_EDGE))
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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->current_picture.f.data[0] + x + y * s->linesize;
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src = pic->f.data[0] + mx + my * s->linesize;
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if (emu) {
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s->dsp.emulated_edge_mc(s->edge_emu_buffer, src, s->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->dsp.avg_tpel_pixels_tab
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: s->dsp.put_tpel_pixels_tab)[dxy](dest, src, s->linesize,
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width, height);
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else
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(avg ? s->dsp.avg_pixels_tab
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: s->dsp.put_pixels_tab)[blocksize][dxy](dest, src, s->linesize,
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height);
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if (!(s->flags & CODEC_FLAG_GRAY)) {
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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++;
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for (i = 1; i < 3; i++) {
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dest = s->current_picture.f.data[i] + (x >> 1) + (y >> 1) * s->uvlinesize;
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src = pic->f.data[i] + mx + my * s->uvlinesize;
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if (emu) {
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s->dsp.emulated_edge_mc(s->edge_emu_buffer, src, s->uvlinesize,
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width + 1, height + 1,
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mx, my, (s->h_edge_pos >> 1),
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s->v_edge_pos >> 1);
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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->dsp.avg_tpel_pixels_tab
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: s->dsp.put_tpel_pixels_tab)[dxy](dest, src,
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s->uvlinesize,
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width, height);
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else
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(avg ? s->dsp.avg_pixels_tab
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: s->dsp.put_pixels_tab)[blocksize][dxy](dest, src,
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s->uvlinesize,
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height);
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}
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}
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}
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static inline int svq3_mc_dir(H264Context *h, int size, int mode,
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int dir, int avg)
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{
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int i, j, k, mx, my, dx, dy, x, y;
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MpegEncContext *const s = (MpegEncContext *)h;
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const int part_width = ((size & 5) == 4) ? 4 : 16 >> (size & 1);
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const int part_height = 16 >> ((unsigned)(size + 1) / 3);
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const int extra_width = (mode == PREDICT_MODE) ? -16 * 6 : 0;
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const int h_edge_pos = 6 * (s->h_edge_pos - part_width) - extra_width;
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const int v_edge_pos = 6 * (s->v_edge_pos - part_height) - extra_width;
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for (i = 0; i < 16; i += part_height)
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for (j = 0; j < 16; j += part_width) {
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const int b_xy = (4 * s->mb_x + (j >> 2)) +
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(4 * s->mb_y + (i >> 2)) * h->b_stride;
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int dxy;
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x = 16 * s->mb_x + j;
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y = 16 * s->mb_y + i;
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k = (j >> 2 & 1) + (i >> 1 & 2) +
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(j >> 1 & 4) + (i & 8);
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if (mode != PREDICT_MODE) {
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pred_motion(h, k, part_width >> 2, dir, 1, &mx, &my);
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} else {
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mx = s->next_picture.f.motion_val[0][b_xy][0] << 1;
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my = s->next_picture.f.motion_val[0][b_xy][1] << 1;
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if (dir == 0) {
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mx = mx * h->frame_num_offset /
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h->prev_frame_num_offset + 1 >> 1;
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my = my * h->frame_num_offset /
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h->prev_frame_num_offset + 1 >> 1;
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} else {
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mx = mx * (h->frame_num_offset - h->prev_frame_num_offset) /
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h->prev_frame_num_offset + 1 >> 1;
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my = my * (h->frame_num_offset - h->prev_frame_num_offset) /
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h->prev_frame_num_offset + 1 >> 1;
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}
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}
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/* clip motion vector prediction to frame border */
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mx = av_clip(mx, extra_width - 6 * x, h_edge_pos - 6 * x);
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my = av_clip(my, extra_width - 6 * y, v_edge_pos - 6 * y);
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/* get (optional) motion vector differential */
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if (mode == PREDICT_MODE) {
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dx = dy = 0;
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} else {
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dy = svq3_get_se_golomb(&s->gb);
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dx = svq3_get_se_golomb(&s->gb);
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if (dx == INVALID_VLC || dy == INVALID_VLC) {
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av_log(h->s.avctx, AV_LOG_ERROR, "invalid MV vlc\n");
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return -1;
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}
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}
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/* compute motion vector */
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if (mode == THIRDPEL_MODE) {
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int fx, fy;
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mx = (mx + 1 >> 1) + dx;
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my = (my + 1 >> 1) + dy;
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fx = (unsigned)(mx + 0x3000) / 3 - 0x1000;
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fy = (unsigned)(my + 0x3000) / 3 - 0x1000;
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dxy = (mx - 3 * fx) + 4 * (my - 3 * fy);
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|
|
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(h->mv_cache[dir][scan8[k] + 1 * 8], mv);
|
|
|
|
if (part_width == 8 && j < 8)
|
|
AV_WN32A(h->mv_cache[dir][scan8[k] + 1 + 1 * 8], mv);
|
|
}
|
|
if (part_width == 8 && j < 8)
|
|
AV_WN32A(h->mv_cache[dir][scan8[k] + 1], mv);
|
|
if (part_width == 4 || part_height == 4)
|
|
AV_WN32A(h->mv_cache[dir][scan8[k]], mv);
|
|
}
|
|
|
|
/* write back motion vectors */
|
|
fill_rectangle(s->current_picture.f.motion_val[dir][b_xy],
|
|
part_width >> 2, part_height >> 2, h->b_stride,
|
|
pack16to32(mx, my), 4);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int svq3_decode_mb(SVQ3Context *svq3, unsigned int mb_type)
|
|
{
|
|
H264Context *h = &svq3->h;
|
|
int i, j, k, m, dir, mode;
|
|
int cbp = 0;
|
|
uint32_t vlc;
|
|
int8_t *top, *left;
|
|
MpegEncContext *const s = (MpegEncContext *)h;
|
|
const int mb_xy = h->mb_xy;
|
|
const int b_xy = 4 * s->mb_x + 4 * s->mb_y * h->b_stride;
|
|
|
|
h->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF;
|
|
h->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF;
|
|
h->topright_samples_available = 0xFFFF;
|
|
|
|
if (mb_type == 0) { /* SKIP */
|
|
if (s->pict_type == AV_PICTURE_TYPE_P ||
|
|
s->next_picture.f.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_picture.f.mb_type[mb_xy], 6);
|
|
if (svq3_mc_dir(h, mb_type, PREDICT_MODE, 0, 0) < 0)
|
|
return -1;
|
|
if (svq3_mc_dir(h, mb_type, PREDICT_MODE, 1, 1) < 0)
|
|
return -1;
|
|
|
|
mb_type = MB_TYPE_16x16;
|
|
}
|
|
} else if (mb_type < 8) { /* INTER */
|
|
if (svq3->thirdpel_flag && svq3->halfpel_flag == !get_bits1(&s->gb))
|
|
mode = THIRDPEL_MODE;
|
|
else if (svq3->halfpel_flag &&
|
|
svq3->thirdpel_flag == !get_bits1(&s->gb))
|
|
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 && h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - 1] + 6] != -1) {
|
|
for (i = 0; i < 4; i++)
|
|
AV_COPY32(h->mv_cache[m][scan8[0] - 1 + i * 8],
|
|
s->current_picture.f.motion_val[m][b_xy - 1 + i * h->b_stride]);
|
|
} else {
|
|
for (i = 0; i < 4; i++)
|
|
AV_ZERO32(h->mv_cache[m][scan8[0] - 1 + i * 8]);
|
|
}
|
|
if (s->mb_y > 0) {
|
|
memcpy(h->mv_cache[m][scan8[0] - 1 * 8],
|
|
s->current_picture.f.motion_val[m][b_xy - h->b_stride],
|
|
4 * 2 * sizeof(int16_t));
|
|
memset(&h->ref_cache[m][scan8[0] - 1 * 8],
|
|
(h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1, 4);
|
|
|
|
if (s->mb_x < s->mb_width - 1) {
|
|
AV_COPY32(h->mv_cache[m][scan8[0] + 4 - 1 * 8],
|
|
s->current_picture.f.motion_val[m][b_xy - h->b_stride + 4]);
|
|
h->ref_cache[m][scan8[0] + 4 - 1 * 8] =
|
|
(h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride + 1] + 6] == -1 ||
|
|
h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1;
|
|
} else
|
|
h->ref_cache[m][scan8[0] + 4 - 1 * 8] = PART_NOT_AVAILABLE;
|
|
if (s->mb_x > 0) {
|
|
AV_COPY32(h->mv_cache[m][scan8[0] - 1 - 1 * 8],
|
|
s->current_picture.f.motion_val[m][b_xy - h->b_stride - 1]);
|
|
h->ref_cache[m][scan8[0] - 1 - 1 * 8] =
|
|
(h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride - 1] + 3] == -1) ? PART_NOT_AVAILABLE : 1;
|
|
} else
|
|
h->ref_cache[m][scan8[0] - 1 - 1 * 8] = PART_NOT_AVAILABLE;
|
|
} else
|
|
memset(&h->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(h, mb_type - 1, mode, 0, 0) < 0)
|
|
return -1;
|
|
} else { /* AV_PICTURE_TYPE_B */
|
|
if (mb_type != 2) {
|
|
if (svq3_mc_dir(h, 0, mode, 0, 0) < 0)
|
|
return -1;
|
|
} else {
|
|
for (i = 0; i < 4; i++)
|
|
memset(s->current_picture.f.motion_val[0][b_xy + i * h->b_stride],
|
|
0, 4 * 2 * sizeof(int16_t));
|
|
}
|
|
if (mb_type != 1) {
|
|
if (svq3_mc_dir(h, 0, mode, 1, mb_type == 3) < 0)
|
|
return -1;
|
|
} else {
|
|
for (i = 0; i < 4; i++)
|
|
memset(s->current_picture.f.motion_val[1][b_xy + i * h->b_stride],
|
|
0, 4 * 2 * sizeof(int16_t));
|
|
}
|
|
}
|
|
|
|
mb_type = MB_TYPE_16x16;
|
|
} else if (mb_type == 8 || mb_type == 33) { /* INTRA4x4 */
|
|
memset(h->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++)
|
|
h->intra4x4_pred_mode_cache[scan8[0] - 1 + i * 8] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - 1] + 6 - i];
|
|
if (h->intra4x4_pred_mode_cache[scan8[0] - 1] == -1)
|
|
h->left_samples_available = 0x5F5F;
|
|
}
|
|
if (s->mb_y > 0) {
|
|
h->intra4x4_pred_mode_cache[4 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride] + 0];
|
|
h->intra4x4_pred_mode_cache[5 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride] + 1];
|
|
h->intra4x4_pred_mode_cache[6 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride] + 2];
|
|
h->intra4x4_pred_mode_cache[7 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride] + 3];
|
|
|
|
if (h->intra4x4_pred_mode_cache[4 + 8 * 0] == -1)
|
|
h->top_samples_available = 0x33FF;
|
|
}
|
|
|
|
/* decode prediction codes for luma blocks */
|
|
for (i = 0; i < 16; i += 2) {
|
|
vlc = svq3_get_ue_golomb(&s->gb);
|
|
|
|
if (vlc >= 25U) {
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "luma prediction:%d\n", vlc);
|
|
return -1;
|
|
}
|
|
|
|
left = &h->intra4x4_pred_mode_cache[scan8[i] - 1];
|
|
top = &h->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(h->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(&h->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_PRED, 4);
|
|
}
|
|
|
|
write_back_intra_pred_mode(h);
|
|
|
|
if (mb_type == 8) {
|
|
ff_h264_check_intra4x4_pred_mode(h);
|
|
|
|
h->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF;
|
|
h->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF;
|
|
} else {
|
|
for (i = 0; i < 4; i++)
|
|
memset(&h->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_128_PRED, 4);
|
|
|
|
h->top_samples_available = 0x33FF;
|
|
h->left_samples_available = 0x5F5F;
|
|
}
|
|
|
|
mb_type = MB_TYPE_INTRA4x4;
|
|
} else { /* INTRA16x16 */
|
|
dir = i_mb_type_info[mb_type - 8].pred_mode;
|
|
dir = (dir >> 1) ^ 3 * (dir & 1) ^ 1;
|
|
|
|
if ((h->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h, dir, 0)) == -1) {
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "check_intra_pred_mode = -1\n");
|
|
return -1;
|
|
}
|
|
|
|
cbp = 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->current_picture.f.motion_val[0][b_xy + i * h->b_stride],
|
|
0, 4 * 2 * sizeof(int16_t));
|
|
if (s->pict_type == AV_PICTURE_TYPE_B) {
|
|
for (i = 0; i < 4; i++)
|
|
memset(s->current_picture.f.motion_val[1][b_xy + i * h->b_stride],
|
|
0, 4 * 2 * sizeof(int16_t));
|
|
}
|
|
}
|
|
if (!IS_INTRA4x4(mb_type)) {
|
|
memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy], DC_PRED, 8);
|
|
}
|
|
if (!IS_SKIP(mb_type) || s->pict_type == AV_PICTURE_TYPE_B) {
|
|
memset(h->non_zero_count_cache + 8, 0, 14 * 8 * sizeof(uint8_t));
|
|
s->dsp.clear_blocks(h->mb + 0);
|
|
s->dsp.clear_blocks(h->mb + 384);
|
|
}
|
|
|
|
if (!IS_INTRA16x16(mb_type) &&
|
|
(!IS_SKIP(mb_type) || s->pict_type == AV_PICTURE_TYPE_B)) {
|
|
if ((vlc = svq3_get_ue_golomb(&s->gb)) >= 48U){
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "cbp_vlc=%d\n", vlc);
|
|
return -1;
|
|
}
|
|
|
|
cbp = IS_INTRA(mb_type) ? golomb_to_intra4x4_cbp[vlc]
|
|
: golomb_to_inter_cbp[vlc];
|
|
}
|
|
if (IS_INTRA16x16(mb_type) ||
|
|
(s->pict_type != AV_PICTURE_TYPE_I && s->adaptive_quant && cbp)) {
|
|
s->qscale += svq3_get_se_golomb(&s->gb);
|
|
|
|
if (s->qscale > 31u) {
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "qscale:%d\n", s->qscale);
|
|
return -1;
|
|
}
|
|
}
|
|
if (IS_INTRA16x16(mb_type)) {
|
|
AV_ZERO128(h->mb_luma_dc[0] + 0);
|
|
AV_ZERO128(h->mb_luma_dc[0] + 8);
|
|
if (svq3_decode_block(&s->gb, h->mb_luma_dc[0], 0, 1)) {
|
|
av_log(h->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);
|
|
h->non_zero_count_cache[scan8[k]] = 1;
|
|
|
|
if (svq3_decode_block(&s->gb, &h->mb[16 * k], index, type)) {
|
|
av_log(h->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, &h->mb[16 * 16 * i], 0, 3)) {
|
|
av_log(h->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;
|
|
h->non_zero_count_cache[scan8[k]] = 1;
|
|
|
|
if (svq3_decode_block(&s->gb, &h->mb[16 * k], 1, 1)) {
|
|
av_log(h->s.avctx, AV_LOG_ERROR,
|
|
"error while decoding chroma ac block\n");
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
h->cbp = cbp;
|
|
s->current_picture.f.mb_type[mb_xy] = mb_type;
|
|
|
|
if (IS_INTRA(mb_type))
|
|
h->chroma_pred_mode = ff_h264_check_intra_pred_mode(h, DC_PRED8x8, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int svq3_decode_slice_header(AVCodecContext *avctx)
|
|
{
|
|
SVQ3Context *svq3 = avctx->priv_data;
|
|
H264Context *h = &svq3->h;
|
|
MpegEncContext *s = &h->s;
|
|
const int mb_xy = h->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 length = header >> 5 & 3;
|
|
|
|
svq3->next_slice_index = get_bits_count(&s->gb) +
|
|
8 * show_bits(&s->gb, 8 * length) +
|
|
8 * length;
|
|
|
|
if (svq3->next_slice_index > s->gb.size_in_bits) {
|
|
av_log(avctx, AV_LOG_ERROR, "slice after bitstream end\n");
|
|
return -1;
|
|
}
|
|
|
|
s->gb.size_in_bits = svq3->next_slice_index - 8 * (length - 1);
|
|
skip_bits(&s->gb, 8);
|
|
|
|
if (svq3->watermark_key) {
|
|
uint32_t header = AV_RL32(&s->gb.buffer[(get_bits_count(&s->gb) >> 3) + 1]);
|
|
AV_WL32(&s->gb.buffer[(get_bits_count(&s->gb) >> 3) + 1],
|
|
header ^ svq3->watermark_key);
|
|
}
|
|
if (length > 0) {
|
|
memcpy((uint8_t *) &s->gb.buffer[get_bits_count(&s->gb) >> 3],
|
|
&s->gb.buffer[s->gb.size_in_bits >> 3], length - 1);
|
|
}
|
|
skip_bits_long(&s->gb, 0);
|
|
}
|
|
|
|
if ((slice_id = svq3_get_ue_golomb(&s->gb)) >= 3) {
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "illegal slice type %d \n", slice_id);
|
|
return -1;
|
|
}
|
|
|
|
h->slice_type = golomb_to_pict_type[slice_id];
|
|
|
|
if ((header & 0x9F) == 2) {
|
|
i = (s->mb_num < 64) ? 6 : (1 + av_log2(s->mb_num - 1));
|
|
s->mb_skip_run = get_bits(&s->gb, i) -
|
|
(s->mb_y * s->mb_width + s->mb_x);
|
|
} else {
|
|
skip_bits1(&s->gb);
|
|
s->mb_skip_run = 0;
|
|
}
|
|
|
|
h->slice_num = get_bits(&s->gb, 8);
|
|
s->qscale = get_bits(&s->gb, 5);
|
|
s->adaptive_quant = get_bits1(&s->gb);
|
|
|
|
/* unknown fields */
|
|
skip_bits1(&s->gb);
|
|
|
|
if (svq3->unknown_flag)
|
|
skip_bits1(&s->gb);
|
|
|
|
skip_bits1(&s->gb);
|
|
skip_bits(&s->gb, 2);
|
|
|
|
while (get_bits1(&s->gb))
|
|
skip_bits(&s->gb, 8);
|
|
|
|
/* reset intra predictors and invalidate motion vector references */
|
|
if (s->mb_x > 0) {
|
|
memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy - 1] + 3,
|
|
-1, 4 * sizeof(int8_t));
|
|
memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy - s->mb_x],
|
|
-1, 8 * sizeof(int8_t) * s->mb_x);
|
|
}
|
|
if (s->mb_y > 0) {
|
|
memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy - s->mb_stride],
|
|
-1, 8 * sizeof(int8_t) * (s->mb_width - s->mb_x));
|
|
|
|
if (s->mb_x > 0)
|
|
h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride - 1] + 3] = -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int svq3_decode_init(AVCodecContext *avctx)
|
|
{
|
|
SVQ3Context *svq3 = avctx->priv_data;
|
|
H264Context *h = &svq3->h;
|
|
MpegEncContext *s = &h->s;
|
|
int m;
|
|
unsigned char *extradata;
|
|
unsigned char *extradata_end;
|
|
unsigned int size;
|
|
int marker_found = 0;
|
|
|
|
if (ff_h264_decode_init(avctx) < 0)
|
|
return -1;
|
|
|
|
s->flags = avctx->flags;
|
|
s->flags2 = avctx->flags2;
|
|
s->unrestricted_mv = 1;
|
|
h->is_complex = 1;
|
|
h->sps.chroma_format_idc = 1;
|
|
avctx->pix_fmt = avctx->codec->pix_fmts[0];
|
|
|
|
if (!s->context_initialized) {
|
|
h->chroma_qp[0] = h->chroma_qp[1] = 4;
|
|
|
|
svq3->halfpel_flag = 1;
|
|
svq3->thirdpel_flag = 1;
|
|
svq3->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;
|
|
}
|
|
|
|
svq3->halfpel_flag = get_bits1(&gb);
|
|
svq3->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);
|
|
|
|
svq3->unknown_flag = get_bits1(&gb);
|
|
avctx->has_b_frames = !s->low_delay;
|
|
if (svq3->unknown_flag) {
|
|
#if CONFIG_ZLIB
|
|
unsigned watermark_width = svq3_get_ue_golomb(&gb);
|
|
unsigned watermark_height = svq3_get_ue_golomb(&gb);
|
|
int u1 = svq3_get_ue_golomb(&gb);
|
|
int u2 = get_bits(&gb, 8);
|
|
int u3 = get_bits(&gb, 2);
|
|
int u4 = svq3_get_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: %dx%d\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;
|
|
}
|
|
svq3->watermark_key = ff_svq1_packet_checksum(buf, buf_len, 0);
|
|
svq3->watermark_key = svq3->watermark_key << 16 |
|
|
svq3->watermark_key;
|
|
av_log(avctx, AV_LOG_DEBUG,
|
|
"watermark key %#x\n", svq3->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->width = avctx->width;
|
|
s->height = avctx->height;
|
|
|
|
if (ff_MPV_common_init(s) < 0)
|
|
return -1;
|
|
|
|
h->b_stride = 4 * s->mb_width;
|
|
|
|
if (ff_h264_alloc_tables(h) < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "svq3 memory allocation failed\n");
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int svq3_decode_frame(AVCodecContext *avctx, void *data,
|
|
int *got_frame, AVPacket *avpkt)
|
|
{
|
|
SVQ3Context *svq3 = avctx->priv_data;
|
|
H264Context *h = &svq3->h;
|
|
MpegEncContext *s = &h->s;
|
|
int buf_size = avpkt->size;
|
|
int m, left;
|
|
uint8_t *buf;
|
|
|
|
/* special case for last picture */
|
|
if (buf_size == 0) {
|
|
if (s->next_picture_ptr && !s->low_delay) {
|
|
*(AVFrame *) data = s->next_picture.f;
|
|
s->next_picture_ptr = NULL;
|
|
*got_frame = 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
s->mb_x = s->mb_y = h->mb_xy = 0;
|
|
|
|
if (svq3->watermark_key) {
|
|
av_fast_malloc(&svq3->buf, &svq3->buf_size,
|
|
buf_size+FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!svq3->buf)
|
|
return AVERROR(ENOMEM);
|
|
memcpy(svq3->buf, avpkt->data, buf_size);
|
|
buf = svq3->buf;
|
|
} else {
|
|
buf = avpkt->data;
|
|
}
|
|
|
|
init_get_bits(&s->gb, buf, 8 * buf_size);
|
|
|
|
if (svq3_decode_slice_header(avctx))
|
|
return -1;
|
|
|
|
s->pict_type = h->slice_type;
|
|
s->picture_number = h->slice_num;
|
|
|
|
if (avctx->debug & FF_DEBUG_PICT_INFO)
|
|
av_log(h->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),
|
|
svq3->halfpel_flag, svq3->thirdpel_flag,
|
|
s->adaptive_quant, s->qscale, h->slice_num);
|
|
|
|
/* for skipping the frame */
|
|
s->current_picture.f.pict_type = s->pict_type;
|
|
s->current_picture.f.key_frame = (s->pict_type == AV_PICTURE_TYPE_I);
|
|
|
|
/* Skip B-frames if we do not have reference frames. */
|
|
if (s->last_picture_ptr == NULL && s->pict_type == AV_PICTURE_TYPE_B)
|
|
return 0;
|
|
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 (ff_h264_frame_start(h) < 0)
|
|
return -1;
|
|
|
|
if (s->pict_type == AV_PICTURE_TYPE_B) {
|
|
h->frame_num_offset = h->slice_num - h->prev_frame_num;
|
|
|
|
if (h->frame_num_offset < 0)
|
|
h->frame_num_offset += 256;
|
|
if (h->frame_num_offset == 0 ||
|
|
h->frame_num_offset >= h->prev_frame_num_offset) {
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "error in B-frame picture id\n");
|
|
return -1;
|
|
}
|
|
} else {
|
|
h->prev_frame_num = h->frame_num;
|
|
h->frame_num = h->slice_num;
|
|
h->prev_frame_num_offset = h->frame_num - h->prev_frame_num;
|
|
|
|
if (h->prev_frame_num_offset < 0)
|
|
h->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++)
|
|
h->ref_cache[m][scan8[0] + 8 * i + j] = 1;
|
|
if (i < 3)
|
|
h->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;
|
|
h->mb_xy = s->mb_x + s->mb_y * s->mb_stride;
|
|
|
|
if ((get_bits_count(&s->gb) + 7) >= s->gb.size_in_bits &&
|
|
((get_bits_count(&s->gb) & 7) == 0 ||
|
|
show_bits(&s->gb, -get_bits_count(&s->gb) & 7) == 0)) {
|
|
skip_bits(&s->gb, svq3->next_slice_index - get_bits_count(&s->gb));
|
|
s->gb.size_in_bits = 8 * buf_size;
|
|
|
|
if (svq3_decode_slice_header(avctx))
|
|
return -1;
|
|
|
|
/* TODO: support s->mb_skip_run */
|
|
}
|
|
|
|
mb_type = svq3_get_ue_golomb(&s->gb);
|
|
|
|
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(svq3, mb_type)) {
|
|
av_log(h->s.avctx, AV_LOG_ERROR,
|
|
"error while decoding MB %d %d\n", s->mb_x, s->mb_y);
|
|
return -1;
|
|
}
|
|
|
|
if (mb_type != 0)
|
|
ff_h264_hl_decode_mb(h);
|
|
|
|
if (s->pict_type != AV_PICTURE_TYPE_B && !s->low_delay)
|
|
s->current_picture.f.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(s, 16 * s->mb_y, 16);
|
|
}
|
|
|
|
left = buf_size*8 - get_bits_count(&s->gb);
|
|
|
|
if (s->mb_y != s->mb_height || s->mb_x != s->mb_width) {
|
|
av_log(avctx, AV_LOG_INFO, "frame num %d incomplete pic x %d y %d left %d\n", avctx->frame_number, s->mb_y, s->mb_x, left);
|
|
//av_hex_dump(stderr, buf+buf_size-8, 8);
|
|
}
|
|
|
|
if (left < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "frame num %d left %d\n", avctx->frame_number, left);
|
|
return -1;
|
|
}
|
|
|
|
ff_MPV_frame_end(s);
|
|
|
|
if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay)
|
|
*(AVFrame *)data = s->current_picture.f;
|
|
else
|
|
*(AVFrame *)data = s->last_picture.f;
|
|
|
|
/* Do not output the last pic after seeking. */
|
|
if (s->last_picture_ptr || s->low_delay)
|
|
*got_frame = 1;
|
|
|
|
return buf_size;
|
|
}
|
|
|
|
static int svq3_decode_end(AVCodecContext *avctx)
|
|
{
|
|
SVQ3Context *svq3 = avctx->priv_data;
|
|
H264Context *h = &svq3->h;
|
|
MpegEncContext *s = &h->s;
|
|
|
|
ff_h264_free_context(h);
|
|
|
|
ff_MPV_common_end(s);
|
|
|
|
av_freep(&svq3->buf);
|
|
svq3->buf_size = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_svq3_decoder = {
|
|
.name = "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 = CODEC_CAP_DRAW_HORIZ_BAND |
|
|
CODEC_CAP_DR1 |
|
|
CODEC_CAP_DELAY,
|
|
.long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 3 / Sorenson Video 3 / SVQ3"),
|
|
.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P,
|
|
AV_PIX_FMT_NONE},
|
|
};
|