2007-05-10 22:26:44 +00:00
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/*
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* H.26L/H.264/AVC/JVT/14496-10/... parser
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* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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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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2010-04-20 14:45:34 +00:00
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* @file
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2016-04-27 17:45:23 +00:00
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* H.264 / AVC / MPEG-4 part10 parser.
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2007-05-10 22:26:44 +00:00
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* @author Michael Niedermayer <michaelni@gmx.at>
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*/
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2011-12-18 02:17:44 +00:00
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#define UNCHECKED_BITSTREAM_READER 1
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2016-03-23 17:33:42 +00:00
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#include <assert.h>
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|
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#include <stdint.h>
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#include "libavutil/avutil.h"
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#include "libavutil/error.h"
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#include "libavutil/log.h"
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#include "libavutil/mem.h"
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#include "libavutil/pixfmt.h"
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2016-05-18 08:22:24 +00:00
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#include "avcodec.h"
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2016-03-23 17:33:42 +00:00
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|
#include "get_bits.h"
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2009-02-21 19:56:50 +00:00
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|
#include "golomb.h"
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2016-05-18 07:16:35 +00:00
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|
#include "h264.h"
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2016-03-22 12:31:21 +00:00
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|
#include "h264_sei.h"
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2016-05-18 07:40:33 +00:00
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#include "h264_ps.h"
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2016-03-23 17:33:42 +00:00
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#include "h264data.h"
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2013-03-25 12:11:41 +00:00
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|
#include "internal.h"
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2014-02-28 12:40:54 +00:00
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#include "mpegutils.h"
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2016-03-23 17:33:42 +00:00
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#include "parser.h"
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2007-05-10 22:26:44 +00:00
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2015-01-17 16:30:46 +00:00
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typedef struct H264ParseContext {
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ParseContext pc;
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2016-03-22 12:31:21 +00:00
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H264ParamSets ps;
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2016-03-28 08:56:51 +00:00
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H264DSPContext h264dsp;
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2016-03-21 15:14:31 +00:00
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H264POCContext poc;
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2016-03-22 12:31:21 +00:00
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H264SEIContext sei;
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2016-03-29 02:09:14 +00:00
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int is_avc;
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int nal_length_size;
|
2015-01-17 16:30:46 +00:00
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int got_first;
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2016-03-29 02:19:50 +00:00
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int picture_structure;
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2016-06-19 10:38:28 +00:00
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uint8_t parse_history[6];
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int parse_history_count;
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int parse_last_mb;
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2016-09-14 14:35:48 +00:00
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int64_t reference_dts;
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2016-10-04 02:45:56 +00:00
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int last_frame_num, last_picture_structure;
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2015-01-17 16:30:46 +00:00
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} H264ParseContext;
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2007-05-10 22:26:44 +00:00
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2015-01-17 16:30:46 +00:00
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static int h264_find_frame_end(H264ParseContext *p, const uint8_t *buf,
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2016-06-19 10:34:38 +00:00
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int buf_size, void *logctx)
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2007-05-10 22:26:44 +00:00
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{
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2011-10-03 18:25:43 +00:00
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int i, j;
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2007-05-10 22:26:44 +00:00
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uint32_t state;
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2015-01-17 16:30:46 +00:00
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ParseContext *pc = &p->pc;
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2011-10-03 18:25:43 +00:00
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|
2016-06-19 10:17:41 +00:00
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int next_avc = p->is_avc ? 0 : buf_size;
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2007-05-10 22:26:44 +00:00
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// mb_addr= pc->mb_addr - 1;
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2013-06-06 06:02:50 +00:00
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state = pc->state;
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if (state > 13)
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state = 7;
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2007-05-10 22:26:44 +00:00
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|
2016-06-19 10:17:41 +00:00
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if (p->is_avc && !p->nal_length_size)
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2016-06-19 10:34:38 +00:00
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av_log(logctx, AV_LOG_ERROR, "AVC-parser: nal length size invalid\n");
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2011-10-03 18:25:43 +00:00
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|
2013-06-06 06:02:50 +00:00
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for (i = 0; i < buf_size; i++) {
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2013-06-08 08:50:24 +00:00
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|
if (i >= next_avc) {
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2011-10-03 18:25:43 +00:00
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int nalsize = 0;
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i = next_avc;
|
2016-06-19 10:17:41 +00:00
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for (j = 0; j < p->nal_length_size; j++)
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2011-10-03 18:25:43 +00:00
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nalsize = (nalsize << 8) | buf[i++];
|
2013-06-08 08:50:24 +00:00
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|
if (nalsize <= 0 || nalsize > buf_size - i) {
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2016-06-19 10:34:38 +00:00
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av_log(logctx, AV_LOG_ERROR, "AVC-parser: nal size %d remaining %d\n", nalsize, buf_size - i);
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2011-10-03 18:25:43 +00:00
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return buf_size;
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|
}
|
2013-06-08 08:50:24 +00:00
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next_avc = i + nalsize;
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state = 5;
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2011-10-03 18:25:43 +00:00
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}
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2013-06-06 06:02:50 +00:00
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if (state == 7) {
|
2016-06-12 13:37:58 +00:00
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i += p->h264dsp.startcode_find_candidate(buf + i, next_avc - i);
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2013-08-08 10:38:10 +00:00
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if (i < next_avc)
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2013-08-05 12:12:47 +00:00
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state = 2;
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2013-06-06 06:02:50 +00:00
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} else if (state <= 2) {
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if (buf[i] == 1)
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state ^= 5; // 2->7, 1->4, 0->5
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else if (buf[i])
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state = 7;
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else
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state >>= 1; // 2->1, 1->0, 0->0
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} else if (state <= 5) {
|
2014-02-14 04:20:02 +00:00
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int nalu_type = buf[i] & 0x1F;
|
2016-05-18 08:36:33 +00:00
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if (nalu_type == H264_NAL_SEI || nalu_type == H264_NAL_SPS ||
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nalu_type == H264_NAL_PPS || nalu_type == H264_NAL_AUD) {
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2013-06-06 06:02:50 +00:00
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if (pc->frame_start_found) {
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2007-05-10 22:26:44 +00:00
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i++;
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2008-10-02 19:24:26 +00:00
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goto found;
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2007-05-10 22:26:44 +00:00
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}
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2016-05-18 08:36:33 +00:00
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} else if (nalu_type == H264_NAL_SLICE || nalu_type == H264_NAL_DPA ||
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nalu_type == H264_NAL_IDR_SLICE) {
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2013-06-08 08:50:24 +00:00
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state += 8;
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2011-10-27 15:53:29 +00:00
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continue;
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}
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2013-06-08 08:50:24 +00:00
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state = 7;
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} else {
|
2016-06-19 10:38:28 +00:00
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p->parse_history[p->parse_history_count++] = buf[i];
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if (p->parse_history_count > 5) {
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unsigned int mb, last_mb = p->parse_last_mb;
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2011-10-27 15:53:29 +00:00
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GetBitContext gb;
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|
2016-06-19 10:38:28 +00:00
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init_get_bits(&gb, p->parse_history, 8*p->parse_history_count);
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p->parse_history_count = 0;
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2011-10-27 15:53:29 +00:00
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mb= get_ue_golomb_long(&gb);
|
2016-06-19 10:38:28 +00:00
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p->parse_last_mb = mb;
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2013-06-06 06:02:50 +00:00
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if (pc->frame_start_found) {
|
2013-06-08 08:50:24 +00:00
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if (mb <= last_mb)
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2011-10-27 15:53:29 +00:00
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goto found;
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2013-06-06 06:02:50 +00:00
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} else
|
2007-05-10 22:26:44 +00:00
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pc->frame_start_found = 1;
|
2013-06-08 08:50:24 +00:00
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state = 7;
|
2007-05-10 22:26:44 +00:00
|
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}
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}
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}
|
2013-06-06 06:02:50 +00:00
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pc->state = state;
|
2016-06-19 10:17:41 +00:00
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if (p->is_avc)
|
2011-10-03 18:25:43 +00:00
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return next_avc;
|
2007-05-10 22:26:44 +00:00
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return END_NOT_FOUND;
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2008-10-02 19:24:26 +00:00
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found:
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2013-06-06 06:02:50 +00:00
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pc->state = 7;
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pc->frame_start_found = 0;
|
2016-06-19 10:17:41 +00:00
|
|
|
if (p->is_avc)
|
2011-10-03 18:25:43 +00:00
|
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|
return next_avc;
|
2014-07-31 14:25:21 +00:00
|
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|
return i - (state & 5) - 5 * (state > 7);
|
2007-05-10 22:26:44 +00:00
|
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}
|
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|
|
2016-03-29 02:19:50 +00:00
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static int scan_mmco_reset(AVCodecParserContext *s, GetBitContext *gb,
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2016-06-20 08:30:08 +00:00
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void *logctx)
|
2013-09-24 09:30:50 +00:00
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{
|
2016-03-21 18:17:03 +00:00
|
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H264PredWeightTable pwt;
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int slice_type_nos = s->pict_type & 3;
|
2015-01-17 16:30:46 +00:00
|
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H264ParseContext *p = s->priv_data;
|
2016-03-21 15:14:31 +00:00
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int list_count, ref_count[2];
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2013-09-24 09:30:50 +00:00
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|
|
|
|
|
|
2016-03-22 12:31:21 +00:00
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if (p->ps.pps->redundant_pic_cnt_present)
|
2016-03-21 18:17:03 +00:00
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get_ue_golomb(gb); // redundant_pic_count
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2013-09-24 09:30:50 +00:00
|
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|
2016-03-21 18:17:03 +00:00
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if (slice_type_nos == AV_PICTURE_TYPE_B)
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|
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get_bits1(gb); // direct_spatial_mv_pred
|
2016-03-21 15:25:29 +00:00
|
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|
|
2016-03-22 12:31:21 +00:00
|
|
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if (ff_h264_parse_ref_count(&list_count, ref_count, gb, p->ps.pps,
|
2016-06-20 08:30:08 +00:00
|
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|
slice_type_nos, p->picture_structure, logctx) < 0)
|
2013-09-24 09:30:50 +00:00
|
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|
return AVERROR_INVALIDDATA;
|
|
|
|
|
2016-03-21 18:17:03 +00:00
|
|
|
if (slice_type_nos != AV_PICTURE_TYPE_I) {
|
2013-09-24 09:30:50 +00:00
|
|
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int list;
|
2016-03-21 15:14:31 +00:00
|
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|
for (list = 0; list < list_count; list++) {
|
2016-03-21 18:17:03 +00:00
|
|
|
if (get_bits1(gb)) {
|
2013-09-24 09:30:50 +00:00
|
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|
int index;
|
|
|
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for (index = 0; ; index++) {
|
2016-03-21 18:17:03 +00:00
|
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unsigned int reordering_of_pic_nums_idc = get_ue_golomb_31(gb);
|
2013-09-24 09:30:50 +00:00
|
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|
|
|
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if (reordering_of_pic_nums_idc < 3)
|
2016-05-27 12:28:21 +00:00
|
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|
get_ue_golomb_long(gb);
|
2013-09-24 09:30:50 +00:00
|
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|
else if (reordering_of_pic_nums_idc > 3) {
|
2016-06-20 08:30:08 +00:00
|
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|
av_log(logctx, AV_LOG_ERROR,
|
2013-09-24 09:30:50 +00:00
|
|
|
"illegal reordering_of_pic_nums_idc %d\n",
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reordering_of_pic_nums_idc);
|
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|
|
return AVERROR_INVALIDDATA;
|
|
|
|
} else
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|
|
|
break;
|
|
|
|
|
2016-03-21 15:14:31 +00:00
|
|
|
if (index >= ref_count[list]) {
|
2016-06-20 08:30:08 +00:00
|
|
|
av_log(logctx, AV_LOG_ERROR,
|
2014-02-12 23:30:12 +00:00
|
|
|
"reference count %d overflow\n", index);
|
2013-09-24 09:30:50 +00:00
|
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-03-22 12:31:21 +00:00
|
|
|
if ((p->ps.pps->weighted_pred && slice_type_nos == AV_PICTURE_TYPE_P) ||
|
|
|
|
(p->ps.pps->weighted_bipred_idc == 1 && slice_type_nos == AV_PICTURE_TYPE_B))
|
|
|
|
ff_h264_pred_weight_table(gb, p->ps.sps, ref_count, slice_type_nos,
|
2017-06-09 22:13:07 +00:00
|
|
|
&pwt, p->picture_structure, logctx);
|
2013-09-24 09:30:50 +00:00
|
|
|
|
2016-03-21 18:17:03 +00:00
|
|
|
if (get_bits1(gb)) { // adaptive_ref_pic_marking_mode_flag
|
2013-09-24 09:30:50 +00:00
|
|
|
int i;
|
|
|
|
for (i = 0; i < MAX_MMCO_COUNT; i++) {
|
2016-03-21 18:17:03 +00:00
|
|
|
MMCOOpcode opcode = get_ue_golomb_31(gb);
|
2013-09-24 09:30:50 +00:00
|
|
|
if (opcode > (unsigned) MMCO_LONG) {
|
2016-06-20 08:30:08 +00:00
|
|
|
av_log(logctx, AV_LOG_ERROR,
|
2013-09-24 09:30:50 +00:00
|
|
|
"illegal memory management control operation %d\n",
|
|
|
|
opcode);
|
|
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
}
|
|
|
|
if (opcode == MMCO_END)
|
|
|
|
return 0;
|
|
|
|
else if (opcode == MMCO_RESET)
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
if (opcode == MMCO_SHORT2UNUSED || opcode == MMCO_SHORT2LONG)
|
2016-05-27 12:28:21 +00:00
|
|
|
get_ue_golomb_long(gb); // difference_of_pic_nums_minus1
|
2013-09-24 09:30:50 +00:00
|
|
|
if (opcode == MMCO_SHORT2LONG || opcode == MMCO_LONG2UNUSED ||
|
|
|
|
opcode == MMCO_LONG || opcode == MMCO_SET_MAX_LONG)
|
2016-03-21 18:17:03 +00:00
|
|
|
get_ue_golomb_31(gb);
|
2013-09-24 09:30:50 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-06-23 20:41:54 +00:00
|
|
|
/**
|
2009-02-21 19:56:50 +00:00
|
|
|
* Parse NAL units of found picture and decode some basic information.
|
|
|
|
*
|
|
|
|
* @param s parser context.
|
|
|
|
* @param avctx codec context.
|
|
|
|
* @param buf buffer with field/frame data.
|
|
|
|
* @param buf_size size of the buffer.
|
|
|
|
*/
|
|
|
|
static inline int parse_nal_units(AVCodecParserContext *s,
|
|
|
|
AVCodecContext *avctx,
|
2014-10-27 03:30:11 +00:00
|
|
|
const uint8_t * const buf, int buf_size)
|
2009-02-21 19:56:50 +00:00
|
|
|
{
|
2015-01-17 16:30:46 +00:00
|
|
|
H264ParseContext *p = s->priv_data;
|
2017-11-04 17:41:06 +00:00
|
|
|
H2645RBSP rbsp = { NULL };
|
2016-03-21 14:38:31 +00:00
|
|
|
H2645NAL nal = { NULL };
|
2014-10-27 03:30:11 +00:00
|
|
|
int buf_index, next_avc;
|
2009-02-21 20:03:05 +00:00
|
|
|
unsigned int pps_id;
|
2009-02-21 19:56:50 +00:00
|
|
|
unsigned int slice_type;
|
2013-09-24 09:30:50 +00:00
|
|
|
int state = -1, got_reset = 0;
|
2011-12-03 02:31:24 +00:00
|
|
|
int q264 = buf_size >=4 && !memcmp("Q264", buf, 4);
|
2013-05-14 22:37:36 +00:00
|
|
|
int field_poc[2];
|
2016-03-21 14:38:31 +00:00
|
|
|
int ret;
|
2009-02-21 19:56:50 +00:00
|
|
|
|
|
|
|
/* set some sane default values */
|
2013-06-06 06:02:50 +00:00
|
|
|
s->pict_type = AV_PICTURE_TYPE_I;
|
|
|
|
s->key_frame = 0;
|
2013-05-14 22:37:36 +00:00
|
|
|
s->picture_structure = AV_PICTURE_STRUCTURE_UNKNOWN;
|
2009-02-21 19:56:50 +00:00
|
|
|
|
2016-03-22 12:31:21 +00:00
|
|
|
ff_h264_sei_uninit(&p->sei);
|
2017-12-01 04:09:43 +00:00
|
|
|
p->sei.frame_packing.arrangement_cancel_flag = -1;
|
2009-02-21 19:56:50 +00:00
|
|
|
|
2010-07-23 00:34:09 +00:00
|
|
|
if (!buf_size)
|
|
|
|
return 0;
|
|
|
|
|
2017-11-04 17:41:06 +00:00
|
|
|
av_fast_padded_malloc(&rbsp.rbsp_buffer, &rbsp.rbsp_buffer_alloc_size, buf_size);
|
|
|
|
if (!rbsp.rbsp_buffer)
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
|
2014-10-27 03:30:11 +00:00
|
|
|
buf_index = 0;
|
2016-06-19 10:17:41 +00:00
|
|
|
next_avc = p->is_avc ? 0 : buf_size;
|
2013-06-06 06:02:50 +00:00
|
|
|
for (;;) {
|
2016-03-22 12:31:21 +00:00
|
|
|
const SPS *sps;
|
2016-05-17 12:21:12 +00:00
|
|
|
int src_length, consumed, nalsize = 0;
|
2014-10-27 03:30:11 +00:00
|
|
|
|
|
|
|
if (buf_index >= next_avc) {
|
2016-08-19 22:36:38 +00:00
|
|
|
nalsize = get_nalsize(p->nal_length_size, buf, buf_size, &buf_index, avctx);
|
2014-10-27 03:30:11 +00:00
|
|
|
if (nalsize < 0)
|
2012-02-18 09:29:58 +00:00
|
|
|
break;
|
2014-10-27 03:30:11 +00:00
|
|
|
next_avc = buf_index + nalsize;
|
2012-02-18 09:29:58 +00:00
|
|
|
} else {
|
2014-10-27 03:30:11 +00:00
|
|
|
buf_index = find_start_code(buf, buf_size, buf_index, next_avc);
|
|
|
|
if (buf_index >= buf_size)
|
|
|
|
break;
|
|
|
|
if (buf_index >= next_avc)
|
|
|
|
continue;
|
2012-02-18 09:29:58 +00:00
|
|
|
}
|
2014-10-27 03:30:11 +00:00
|
|
|
src_length = next_avc - buf_index;
|
|
|
|
|
|
|
|
state = buf[buf_index];
|
2009-02-21 19:56:50 +00:00
|
|
|
switch (state & 0x1f) {
|
2016-05-18 08:36:33 +00:00
|
|
|
case H264_NAL_SLICE:
|
|
|
|
case H264_NAL_IDR_SLICE:
|
2009-02-21 19:56:50 +00:00
|
|
|
// Do not walk the whole buffer just to decode slice header
|
2016-05-18 08:36:33 +00:00
|
|
|
if ((state & 0x1f) == H264_NAL_IDR_SLICE || ((state >> 5) & 0x3) == 0) {
|
2013-09-24 09:30:50 +00:00
|
|
|
/* IDR or disposable slice
|
|
|
|
* No need to decode many bytes because MMCOs shall not be present. */
|
|
|
|
if (src_length > 60)
|
|
|
|
src_length = 60;
|
|
|
|
} else {
|
|
|
|
/* To decode up to MMCOs */
|
|
|
|
if (src_length > 1000)
|
|
|
|
src_length = 1000;
|
|
|
|
}
|
2009-02-21 19:56:50 +00:00
|
|
|
break;
|
|
|
|
}
|
2017-11-04 17:41:06 +00:00
|
|
|
consumed = ff_h2645_extract_rbsp(buf + buf_index, src_length, &rbsp, &nal, 1);
|
2016-03-21 14:38:31 +00:00
|
|
|
if (consumed < 0)
|
2009-02-21 19:56:50 +00:00
|
|
|
break;
|
|
|
|
|
2014-10-27 03:30:11 +00:00
|
|
|
buf_index += consumed;
|
|
|
|
|
2016-05-17 12:21:12 +00:00
|
|
|
ret = init_get_bits8(&nal.gb, nal.data, nal.size);
|
2016-03-21 14:38:31 +00:00
|
|
|
if (ret < 0)
|
|
|
|
goto fail;
|
|
|
|
get_bits1(&nal.gb);
|
|
|
|
nal.ref_idc = get_bits(&nal.gb, 2);
|
|
|
|
nal.type = get_bits(&nal.gb, 5);
|
|
|
|
|
2016-03-29 02:19:50 +00:00
|
|
|
switch (nal.type) {
|
2016-05-18 08:36:33 +00:00
|
|
|
case H264_NAL_SPS:
|
2016-06-12 11:24:27 +00:00
|
|
|
ff_h264_decode_seq_parameter_set(&nal.gb, avctx, &p->ps, 0);
|
2009-02-21 19:56:50 +00:00
|
|
|
break;
|
2016-05-18 08:36:33 +00:00
|
|
|
case H264_NAL_PPS:
|
2016-03-22 12:31:21 +00:00
|
|
|
ff_h264_decode_picture_parameter_set(&nal.gb, avctx, &p->ps,
|
|
|
|
nal.size_bits);
|
2009-02-21 19:56:50 +00:00
|
|
|
break;
|
2016-05-18 08:36:33 +00:00
|
|
|
case H264_NAL_SEI:
|
2016-03-22 12:31:21 +00:00
|
|
|
ff_h264_sei_decode(&p->sei, &nal.gb, &p->ps, avctx);
|
2009-02-21 19:56:50 +00:00
|
|
|
break;
|
2016-05-18 08:36:33 +00:00
|
|
|
case H264_NAL_IDR_SLICE:
|
2009-02-21 19:59:25 +00:00
|
|
|
s->key_frame = 1;
|
2013-05-14 22:37:36 +00:00
|
|
|
|
2016-03-21 15:14:31 +00:00
|
|
|
p->poc.prev_frame_num = 0;
|
|
|
|
p->poc.prev_frame_num_offset = 0;
|
|
|
|
p->poc.prev_poc_msb =
|
|
|
|
p->poc.prev_poc_lsb = 0;
|
2013-06-06 06:02:50 +00:00
|
|
|
/* fall through */
|
2016-05-18 08:36:33 +00:00
|
|
|
case H264_NAL_SLICE:
|
2016-05-27 12:28:21 +00:00
|
|
|
get_ue_golomb_long(&nal.gb); // skip first_mb_in_slice
|
2016-03-21 18:17:03 +00:00
|
|
|
slice_type = get_ue_golomb_31(&nal.gb);
|
2013-08-19 12:24:45 +00:00
|
|
|
s->pict_type = ff_h264_golomb_to_pict_type[slice_type % 5];
|
2016-03-22 12:31:21 +00:00
|
|
|
if (p->sei.recovery_point.recovery_frame_cnt >= 0) {
|
2009-02-21 19:59:25 +00:00
|
|
|
/* key frame, since recovery_frame_cnt is set */
|
|
|
|
s->key_frame = 1;
|
|
|
|
}
|
2016-03-21 18:17:03 +00:00
|
|
|
pps_id = get_ue_golomb(&nal.gb);
|
2013-06-06 06:02:50 +00:00
|
|
|
if (pps_id >= MAX_PPS_COUNT) {
|
2016-03-29 02:19:50 +00:00
|
|
|
av_log(avctx, AV_LOG_ERROR,
|
2014-02-12 23:30:12 +00:00
|
|
|
"pps_id %u out of range\n", pps_id);
|
2016-03-21 14:38:31 +00:00
|
|
|
goto fail;
|
2009-02-21 20:03:05 +00:00
|
|
|
}
|
2016-03-22 12:31:21 +00:00
|
|
|
if (!p->ps.pps_list[pps_id]) {
|
2016-03-29 02:19:50 +00:00
|
|
|
av_log(avctx, AV_LOG_ERROR,
|
2014-02-12 23:30:12 +00:00
|
|
|
"non-existing PPS %u referenced\n", pps_id);
|
2016-03-21 14:38:31 +00:00
|
|
|
goto fail;
|
2009-02-21 20:03:05 +00:00
|
|
|
}
|
2016-07-02 01:06:27 +00:00
|
|
|
|
|
|
|
av_buffer_unref(&p->ps.pps_ref);
|
|
|
|
av_buffer_unref(&p->ps.sps_ref);
|
|
|
|
p->ps.pps = NULL;
|
|
|
|
p->ps.sps = NULL;
|
|
|
|
p->ps.pps_ref = av_buffer_ref(p->ps.pps_list[pps_id]);
|
|
|
|
if (!p->ps.pps_ref)
|
|
|
|
goto fail;
|
|
|
|
p->ps.pps = (const PPS*)p->ps.pps_ref->data;
|
|
|
|
|
2016-03-22 12:31:21 +00:00
|
|
|
if (!p->ps.sps_list[p->ps.pps->sps_id]) {
|
2016-03-29 02:19:50 +00:00
|
|
|
av_log(avctx, AV_LOG_ERROR,
|
2016-03-22 12:31:21 +00:00
|
|
|
"non-existing SPS %u referenced\n", p->ps.pps->sps_id);
|
2016-03-21 14:38:31 +00:00
|
|
|
goto fail;
|
2009-02-21 20:03:05 +00:00
|
|
|
}
|
2016-07-02 01:06:27 +00:00
|
|
|
|
|
|
|
p->ps.sps_ref = av_buffer_ref(p->ps.sps_list[p->ps.pps->sps_id]);
|
|
|
|
if (!p->ps.sps_ref)
|
|
|
|
goto fail;
|
|
|
|
p->ps.sps = (const SPS*)p->ps.sps_ref->data;
|
2009-02-21 20:03:05 +00:00
|
|
|
|
2016-03-22 12:31:21 +00:00
|
|
|
sps = p->ps.sps;
|
2009-02-21 20:03:05 +00:00
|
|
|
|
2016-06-12 11:24:27 +00:00
|
|
|
// heuristic to detect non marked keyframes
|
2016-06-19 10:43:21 +00:00
|
|
|
if (p->ps.sps->ref_frame_count <= 1 && p->ps.pps->ref_count[0] <= 1 && s->pict_type == AV_PICTURE_TYPE_I)
|
2013-10-26 13:46:43 +00:00
|
|
|
s->key_frame = 1;
|
|
|
|
|
2016-03-21 15:14:31 +00:00
|
|
|
p->poc.frame_num = get_bits(&nal.gb, sps->log2_max_frame_num);
|
2016-03-22 12:31:21 +00:00
|
|
|
|
|
|
|
s->coded_width = 16 * sps->mb_width;
|
|
|
|
s->coded_height = 16 * sps->mb_height;
|
|
|
|
s->width = s->coded_width - (sps->crop_right + sps->crop_left);
|
|
|
|
s->height = s->coded_height - (sps->crop_top + sps->crop_bottom);
|
2015-02-09 13:41:50 +00:00
|
|
|
if (s->width <= 0 || s->height <= 0) {
|
|
|
|
s->width = s->coded_width;
|
|
|
|
s->height = s->coded_height;
|
|
|
|
}
|
|
|
|
|
2016-03-22 12:31:21 +00:00
|
|
|
switch (sps->bit_depth_luma) {
|
2015-02-09 13:41:50 +00:00
|
|
|
case 9:
|
2016-03-29 02:19:50 +00:00
|
|
|
if (sps->chroma_format_idc == 3) s->format = AV_PIX_FMT_YUV444P9;
|
|
|
|
else if (sps->chroma_format_idc == 2) s->format = AV_PIX_FMT_YUV422P9;
|
|
|
|
else s->format = AV_PIX_FMT_YUV420P9;
|
2015-02-09 13:41:50 +00:00
|
|
|
break;
|
|
|
|
case 10:
|
2016-03-29 02:19:50 +00:00
|
|
|
if (sps->chroma_format_idc == 3) s->format = AV_PIX_FMT_YUV444P10;
|
|
|
|
else if (sps->chroma_format_idc == 2) s->format = AV_PIX_FMT_YUV422P10;
|
|
|
|
else s->format = AV_PIX_FMT_YUV420P10;
|
2015-02-09 13:41:50 +00:00
|
|
|
break;
|
|
|
|
case 8:
|
2016-03-29 02:19:50 +00:00
|
|
|
if (sps->chroma_format_idc == 3) s->format = AV_PIX_FMT_YUV444P;
|
|
|
|
else if (sps->chroma_format_idc == 2) s->format = AV_PIX_FMT_YUV422P;
|
|
|
|
else s->format = AV_PIX_FMT_YUV420P;
|
2015-02-09 13:41:50 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
s->format = AV_PIX_FMT_NONE;
|
|
|
|
}
|
|
|
|
|
2016-03-22 12:31:21 +00:00
|
|
|
avctx->profile = ff_h264_get_profile(sps);
|
|
|
|
avctx->level = sps->level_idc;
|
2010-01-28 20:57:29 +00:00
|
|
|
|
2016-03-22 12:31:21 +00:00
|
|
|
if (sps->frame_mbs_only_flag) {
|
2016-03-29 02:19:50 +00:00
|
|
|
p->picture_structure = PICT_FRAME;
|
2013-06-06 06:02:50 +00:00
|
|
|
} else {
|
2016-03-21 18:17:03 +00:00
|
|
|
if (get_bits1(&nal.gb)) { // field_pic_flag
|
2016-03-29 02:19:50 +00:00
|
|
|
p->picture_structure = PICT_TOP_FIELD + get_bits1(&nal.gb); // bottom_field_flag
|
2009-02-21 20:03:05 +00:00
|
|
|
} else {
|
2016-03-29 02:19:50 +00:00
|
|
|
p->picture_structure = PICT_FRAME;
|
2009-02-21 20:03:05 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-05-18 08:36:33 +00:00
|
|
|
if (nal.type == H264_NAL_IDR_SLICE)
|
2016-05-27 12:28:21 +00:00
|
|
|
get_ue_golomb_long(&nal.gb); /* idr_pic_id */
|
2016-03-22 12:31:21 +00:00
|
|
|
if (sps->poc_type == 0) {
|
2016-03-21 15:14:31 +00:00
|
|
|
p->poc.poc_lsb = get_bits(&nal.gb, sps->log2_max_poc_lsb);
|
2013-05-14 22:37:36 +00:00
|
|
|
|
2016-03-22 12:31:21 +00:00
|
|
|
if (p->ps.pps->pic_order_present == 1 &&
|
2016-03-29 02:19:50 +00:00
|
|
|
p->picture_structure == PICT_FRAME)
|
2016-03-21 15:14:31 +00:00
|
|
|
p->poc.delta_poc_bottom = get_se_golomb(&nal.gb);
|
2013-05-14 22:37:36 +00:00
|
|
|
}
|
|
|
|
|
2016-03-22 12:31:21 +00:00
|
|
|
if (sps->poc_type == 1 &&
|
|
|
|
!sps->delta_pic_order_always_zero_flag) {
|
2016-03-21 15:14:31 +00:00
|
|
|
p->poc.delta_poc[0] = get_se_golomb(&nal.gb);
|
2013-05-14 22:37:36 +00:00
|
|
|
|
2016-03-22 12:31:21 +00:00
|
|
|
if (p->ps.pps->pic_order_present == 1 &&
|
2016-03-29 02:19:50 +00:00
|
|
|
p->picture_structure == PICT_FRAME)
|
2016-03-21 15:14:31 +00:00
|
|
|
p->poc.delta_poc[1] = get_se_golomb(&nal.gb);
|
2013-05-14 22:37:36 +00:00
|
|
|
}
|
|
|
|
|
2013-09-24 09:30:50 +00:00
|
|
|
/* Decode POC of this picture.
|
|
|
|
* The prev_ values needed for decoding POC of the next picture are not set here. */
|
2013-09-16 09:34:27 +00:00
|
|
|
field_poc[0] = field_poc[1] = INT_MAX;
|
2018-02-17 03:20:54 +00:00
|
|
|
ret = ff_h264_init_poc(field_poc, &s->output_picture_number, sps,
|
2016-03-29 02:19:50 +00:00
|
|
|
&p->poc, p->picture_structure, nal.ref_idc);
|
2018-02-17 03:20:54 +00:00
|
|
|
if (ret < 0)
|
|
|
|
goto fail;
|
2013-05-14 22:37:36 +00:00
|
|
|
|
2013-09-24 09:30:50 +00:00
|
|
|
/* Continue parsing to check if MMCO_RESET is present.
|
|
|
|
* FIXME: MMCO_RESET could appear in non-first slice.
|
|
|
|
* Maybe, we should parse all undisposable non-IDR slice of this
|
|
|
|
* picture until encountering MMCO_RESET in a slice of it. */
|
2016-05-18 08:36:33 +00:00
|
|
|
if (nal.ref_idc && nal.type != H264_NAL_IDR_SLICE) {
|
2016-03-29 02:19:50 +00:00
|
|
|
got_reset = scan_mmco_reset(s, &nal.gb, avctx);
|
2013-09-24 09:30:50 +00:00
|
|
|
if (got_reset < 0)
|
2016-03-21 14:38:31 +00:00
|
|
|
goto fail;
|
2013-09-24 09:30:50 +00:00
|
|
|
}
|
|
|
|
|
2013-09-16 09:34:27 +00:00
|
|
|
/* Set up the prev_ values for decoding POC of the next picture. */
|
2016-03-21 15:14:31 +00:00
|
|
|
p->poc.prev_frame_num = got_reset ? 0 : p->poc.frame_num;
|
|
|
|
p->poc.prev_frame_num_offset = got_reset ? 0 : p->poc.frame_num_offset;
|
2016-03-29 02:19:50 +00:00
|
|
|
if (nal.ref_idc != 0) {
|
2013-09-24 09:30:50 +00:00
|
|
|
if (!got_reset) {
|
2016-03-21 15:14:31 +00:00
|
|
|
p->poc.prev_poc_msb = p->poc.poc_msb;
|
|
|
|
p->poc.prev_poc_lsb = p->poc.poc_lsb;
|
2013-09-24 09:30:50 +00:00
|
|
|
} else {
|
2016-03-21 15:14:31 +00:00
|
|
|
p->poc.prev_poc_msb = 0;
|
|
|
|
p->poc.prev_poc_lsb =
|
2016-03-29 02:19:50 +00:00
|
|
|
p->picture_structure == PICT_BOTTOM_FIELD ? 0 : field_poc[0];
|
2013-09-24 09:30:50 +00:00
|
|
|
}
|
2013-09-16 09:34:27 +00:00
|
|
|
}
|
|
|
|
|
2017-02-14 22:45:01 +00:00
|
|
|
if (sps->pic_struct_present_flag && p->sei.picture_timing.present) {
|
2016-03-22 12:31:21 +00:00
|
|
|
switch (p->sei.picture_timing.pic_struct) {
|
2017-05-15 21:42:14 +00:00
|
|
|
case H264_SEI_PIC_STRUCT_TOP_FIELD:
|
|
|
|
case H264_SEI_PIC_STRUCT_BOTTOM_FIELD:
|
2013-06-06 06:02:50 +00:00
|
|
|
s->repeat_pict = 0;
|
|
|
|
break;
|
2017-05-15 21:42:14 +00:00
|
|
|
case H264_SEI_PIC_STRUCT_FRAME:
|
|
|
|
case H264_SEI_PIC_STRUCT_TOP_BOTTOM:
|
|
|
|
case H264_SEI_PIC_STRUCT_BOTTOM_TOP:
|
2013-06-06 06:02:50 +00:00
|
|
|
s->repeat_pict = 1;
|
|
|
|
break;
|
2017-05-15 21:42:14 +00:00
|
|
|
case H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
|
|
|
|
case H264_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
|
2013-06-06 06:02:50 +00:00
|
|
|
s->repeat_pict = 2;
|
|
|
|
break;
|
2017-05-15 21:42:14 +00:00
|
|
|
case H264_SEI_PIC_STRUCT_FRAME_DOUBLING:
|
2013-06-06 06:02:50 +00:00
|
|
|
s->repeat_pict = 3;
|
|
|
|
break;
|
2017-05-15 21:42:14 +00:00
|
|
|
case H264_SEI_PIC_STRUCT_FRAME_TRIPLING:
|
2013-06-06 06:02:50 +00:00
|
|
|
s->repeat_pict = 5;
|
|
|
|
break;
|
|
|
|
default:
|
2016-03-29 02:19:50 +00:00
|
|
|
s->repeat_pict = p->picture_structure == PICT_FRAME ? 1 : 0;
|
2013-06-06 06:02:50 +00:00
|
|
|
break;
|
2009-02-21 20:11:47 +00:00
|
|
|
}
|
|
|
|
} else {
|
2016-03-29 02:19:50 +00:00
|
|
|
s->repeat_pict = p->picture_structure == PICT_FRAME ? 1 : 0;
|
2009-02-21 20:11:47 +00:00
|
|
|
}
|
|
|
|
|
2016-03-29 02:19:50 +00:00
|
|
|
if (p->picture_structure == PICT_FRAME) {
|
2013-05-14 22:37:36 +00:00
|
|
|
s->picture_structure = AV_PICTURE_STRUCTURE_FRAME;
|
2017-02-14 22:45:01 +00:00
|
|
|
if (sps->pic_struct_present_flag && p->sei.picture_timing.present) {
|
2016-03-22 12:31:21 +00:00
|
|
|
switch (p->sei.picture_timing.pic_struct) {
|
2017-05-15 21:42:14 +00:00
|
|
|
case H264_SEI_PIC_STRUCT_TOP_BOTTOM:
|
|
|
|
case H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
|
2013-06-06 06:02:50 +00:00
|
|
|
s->field_order = AV_FIELD_TT;
|
|
|
|
break;
|
2017-05-15 21:42:14 +00:00
|
|
|
case H264_SEI_PIC_STRUCT_BOTTOM_TOP:
|
|
|
|
case H264_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
|
2013-06-06 06:02:50 +00:00
|
|
|
s->field_order = AV_FIELD_BB;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
s->field_order = AV_FIELD_PROGRESSIVE;
|
|
|
|
break;
|
2013-05-14 22:37:36 +00:00
|
|
|
}
|
|
|
|
} else {
|
|
|
|
if (field_poc[0] < field_poc[1])
|
|
|
|
s->field_order = AV_FIELD_TT;
|
|
|
|
else if (field_poc[0] > field_poc[1])
|
|
|
|
s->field_order = AV_FIELD_BB;
|
|
|
|
else
|
|
|
|
s->field_order = AV_FIELD_PROGRESSIVE;
|
|
|
|
}
|
|
|
|
} else {
|
2016-03-29 02:19:50 +00:00
|
|
|
if (p->picture_structure == PICT_TOP_FIELD)
|
2013-05-14 22:37:36 +00:00
|
|
|
s->picture_structure = AV_PICTURE_STRUCTURE_TOP_FIELD;
|
|
|
|
else
|
|
|
|
s->picture_structure = AV_PICTURE_STRUCTURE_BOTTOM_FIELD;
|
2016-10-04 02:45:56 +00:00
|
|
|
if (p->poc.frame_num == p->last_frame_num &&
|
|
|
|
p->last_picture_structure != AV_PICTURE_STRUCTURE_UNKNOWN &&
|
|
|
|
p->last_picture_structure != AV_PICTURE_STRUCTURE_FRAME &&
|
|
|
|
p->last_picture_structure != s->picture_structure) {
|
|
|
|
if (p->last_picture_structure == AV_PICTURE_STRUCTURE_TOP_FIELD)
|
|
|
|
s->field_order = AV_FIELD_TT;
|
|
|
|
else
|
|
|
|
s->field_order = AV_FIELD_BB;
|
|
|
|
} else {
|
|
|
|
s->field_order = AV_FIELD_UNKNOWN;
|
|
|
|
}
|
|
|
|
p->last_picture_structure = s->picture_structure;
|
|
|
|
p->last_frame_num = p->poc.frame_num;
|
2013-05-14 22:37:36 +00:00
|
|
|
}
|
|
|
|
|
2017-11-04 17:41:06 +00:00
|
|
|
av_freep(&rbsp.rbsp_buffer);
|
2009-02-21 19:56:50 +00:00
|
|
|
return 0; /* no need to evaluate the rest */
|
|
|
|
}
|
|
|
|
}
|
2016-05-17 12:21:12 +00:00
|
|
|
if (q264) {
|
2017-11-04 17:41:06 +00:00
|
|
|
av_freep(&rbsp.rbsp_buffer);
|
2011-12-03 02:31:24 +00:00
|
|
|
return 0;
|
2009-02-21 19:56:50 +00:00
|
|
|
}
|
|
|
|
/* didn't find a picture! */
|
2016-06-19 10:43:21 +00:00
|
|
|
av_log(avctx, AV_LOG_ERROR, "missing picture in access unit with size %d\n", buf_size);
|
2016-03-21 14:38:31 +00:00
|
|
|
fail:
|
2017-11-04 17:41:06 +00:00
|
|
|
av_freep(&rbsp.rbsp_buffer);
|
2009-02-21 19:56:50 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2007-05-10 22:26:44 +00:00
|
|
|
static int h264_parse(AVCodecParserContext *s,
|
|
|
|
AVCodecContext *avctx,
|
|
|
|
const uint8_t **poutbuf, int *poutbuf_size,
|
|
|
|
const uint8_t *buf, int buf_size)
|
|
|
|
{
|
2015-01-17 16:30:46 +00:00
|
|
|
H264ParseContext *p = s->priv_data;
|
|
|
|
ParseContext *pc = &p->pc;
|
2007-05-10 22:26:44 +00:00
|
|
|
int next;
|
|
|
|
|
2015-01-17 16:30:46 +00:00
|
|
|
if (!p->got_first) {
|
|
|
|
p->got_first = 1;
|
2010-05-28 18:50:39 +00:00
|
|
|
if (avctx->extradata_size) {
|
2016-03-29 02:09:14 +00:00
|
|
|
ff_h264_decode_extradata(avctx->extradata, avctx->extradata_size,
|
|
|
|
&p->ps, &p->is_avc, &p->nal_length_size,
|
|
|
|
avctx->err_recognition, avctx);
|
2010-05-28 18:50:39 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-06-06 06:02:50 +00:00
|
|
|
if (s->flags & PARSER_FLAG_COMPLETE_FRAMES) {
|
|
|
|
next = buf_size;
|
|
|
|
} else {
|
2016-06-19 10:34:38 +00:00
|
|
|
next = h264_find_frame_end(p, buf, buf_size, avctx);
|
2007-05-10 22:26:44 +00:00
|
|
|
|
|
|
|
if (ff_combine_frame(pc, next, &buf, &buf_size) < 0) {
|
2013-06-06 06:02:50 +00:00
|
|
|
*poutbuf = NULL;
|
2007-05-10 22:26:44 +00:00
|
|
|
*poutbuf_size = 0;
|
|
|
|
return buf_size;
|
|
|
|
}
|
|
|
|
|
2013-06-06 06:02:50 +00:00
|
|
|
if (next < 0 && next != END_NOT_FOUND) {
|
2013-06-08 08:50:24 +00:00
|
|
|
av_assert1(pc->last_index + next >= 0);
|
2016-06-19 10:34:38 +00:00
|
|
|
h264_find_frame_end(p, &pc->buffer[pc->last_index + next], -next, avctx); // update state
|
2007-05-10 22:26:44 +00:00
|
|
|
}
|
2011-03-29 04:42:02 +00:00
|
|
|
}
|
2009-02-21 19:56:50 +00:00
|
|
|
|
2011-03-29 04:43:23 +00:00
|
|
|
parse_nal_units(s, avctx, buf, buf_size);
|
2009-02-24 22:24:34 +00:00
|
|
|
|
2014-10-15 13:54:02 +00:00
|
|
|
if (avctx->framerate.num)
|
|
|
|
avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
|
2016-03-22 12:31:21 +00:00
|
|
|
if (p->sei.picture_timing.cpb_removal_delay >= 0) {
|
|
|
|
s->dts_sync_point = p->sei.buffering_period.present;
|
|
|
|
s->dts_ref_dts_delta = p->sei.picture_timing.cpb_removal_delay;
|
|
|
|
s->pts_dts_delta = p->sei.picture_timing.dpb_output_delay;
|
2011-03-29 04:43:23 +00:00
|
|
|
} else {
|
|
|
|
s->dts_sync_point = INT_MIN;
|
|
|
|
s->dts_ref_dts_delta = INT_MIN;
|
|
|
|
s->pts_dts_delta = INT_MIN;
|
|
|
|
}
|
2011-03-29 04:42:02 +00:00
|
|
|
|
2011-03-29 04:43:23 +00:00
|
|
|
if (s->flags & PARSER_FLAG_ONCE) {
|
|
|
|
s->flags &= PARSER_FLAG_COMPLETE_FRAMES;
|
|
|
|
}
|
2007-05-10 22:26:44 +00:00
|
|
|
|
2016-09-14 14:35:48 +00:00
|
|
|
if (s->dts_sync_point >= 0) {
|
2016-09-14 19:14:07 +00:00
|
|
|
int64_t den = avctx->time_base.den * (int64_t)avctx->pkt_timebase.num;
|
2016-09-14 14:35:48 +00:00
|
|
|
if (den > 0) {
|
2016-09-14 19:14:07 +00:00
|
|
|
int64_t num = avctx->time_base.num * (int64_t)avctx->pkt_timebase.den;
|
2016-09-14 14:35:48 +00:00
|
|
|
if (s->dts != AV_NOPTS_VALUE) {
|
|
|
|
// got DTS from the stream, update reference timestamp
|
|
|
|
p->reference_dts = s->dts - av_rescale(s->dts_ref_dts_delta, num, den);
|
|
|
|
} else if (p->reference_dts != AV_NOPTS_VALUE) {
|
|
|
|
// compute DTS based on reference timestamp
|
|
|
|
s->dts = p->reference_dts + av_rescale(s->dts_ref_dts_delta, num, den);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (p->reference_dts != AV_NOPTS_VALUE && s->pts == AV_NOPTS_VALUE)
|
|
|
|
s->pts = s->dts + av_rescale(s->pts_dts_delta, num, den);
|
|
|
|
|
|
|
|
if (s->dts_sync_point > 0)
|
|
|
|
p->reference_dts = s->dts; // new reference
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-06-06 06:02:50 +00:00
|
|
|
*poutbuf = buf;
|
2007-05-10 22:26:44 +00:00
|
|
|
*poutbuf_size = buf_size;
|
|
|
|
return next;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int h264_split(AVCodecContext *avctx,
|
|
|
|
const uint8_t *buf, int buf_size)
|
|
|
|
{
|
|
|
|
uint32_t state = -1;
|
2013-06-06 06:02:50 +00:00
|
|
|
int has_sps = 0;
|
2014-11-12 02:27:26 +00:00
|
|
|
int has_pps = 0;
|
2015-02-13 05:51:30 +00:00
|
|
|
const uint8_t *ptr = buf, *end = buf + buf_size;
|
|
|
|
int nalu_type;
|
2013-06-06 06:02:50 +00:00
|
|
|
|
2015-02-13 05:51:30 +00:00
|
|
|
while (ptr < end) {
|
|
|
|
ptr = avpriv_find_start_code(ptr, end, &state);
|
|
|
|
if ((state & 0xFFFFFF00) != 0x100)
|
|
|
|
break;
|
|
|
|
nalu_type = state & 0x1F;
|
2016-08-01 18:11:05 +00:00
|
|
|
if (nalu_type == H264_NAL_SPS) {
|
2013-06-06 06:02:50 +00:00
|
|
|
has_sps = 1;
|
2016-08-01 18:11:05 +00:00
|
|
|
} else if (nalu_type == H264_NAL_PPS)
|
2014-11-12 02:27:26 +00:00
|
|
|
has_pps = 1;
|
2015-02-13 05:51:30 +00:00
|
|
|
/* else if (nalu_type == 0x01 ||
|
|
|
|
* nalu_type == 0x02 ||
|
|
|
|
* nalu_type == 0x05) {
|
2013-06-06 06:02:50 +00:00
|
|
|
* }
|
|
|
|
*/
|
2016-08-01 18:11:05 +00:00
|
|
|
else if ((nalu_type != H264_NAL_SEI || has_pps) &&
|
|
|
|
nalu_type != H264_NAL_AUD && nalu_type != H264_NAL_SPS_EXT &&
|
2015-02-13 05:51:30 +00:00
|
|
|
nalu_type != 0x0f) {
|
2013-06-06 06:02:50 +00:00
|
|
|
if (has_sps) {
|
2015-02-13 05:51:30 +00:00
|
|
|
while (ptr - 4 > buf && ptr[-5] == 0)
|
|
|
|
ptr--;
|
|
|
|
return ptr - 4 - buf;
|
2007-05-10 22:26:44 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2015-02-13 05:51:30 +00:00
|
|
|
|
2007-05-10 22:26:44 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-01-28 12:09:30 +00:00
|
|
|
static void h264_close(AVCodecParserContext *s)
|
2008-10-03 23:08:52 +00:00
|
|
|
{
|
2015-01-17 16:30:46 +00:00
|
|
|
H264ParseContext *p = s->priv_data;
|
|
|
|
ParseContext *pc = &p->pc;
|
2008-10-03 23:08:52 +00:00
|
|
|
|
2014-10-30 22:58:52 +00:00
|
|
|
av_freep(&pc->buffer);
|
2016-03-22 12:31:21 +00:00
|
|
|
|
2016-03-22 12:31:21 +00:00
|
|
|
ff_h264_sei_uninit(&p->sei);
|
2016-06-20 14:02:10 +00:00
|
|
|
ff_h264_ps_uninit(&p->ps);
|
2008-10-03 23:08:52 +00:00
|
|
|
}
|
|
|
|
|
2013-02-01 09:31:59 +00:00
|
|
|
static av_cold int init(AVCodecParserContext *s)
|
2010-01-28 13:04:25 +00:00
|
|
|
{
|
2015-01-17 16:30:46 +00:00
|
|
|
H264ParseContext *p = s->priv_data;
|
2015-01-17 17:45:29 +00:00
|
|
|
|
2016-09-14 14:35:48 +00:00
|
|
|
p->reference_dts = AV_NOPTS_VALUE;
|
2016-10-04 02:45:56 +00:00
|
|
|
p->last_frame_num = INT_MAX;
|
2016-03-28 08:56:51 +00:00
|
|
|
ff_h264dsp_init(&p->h264dsp, 8, 1);
|
2010-01-28 13:04:25 +00:00
|
|
|
return 0;
|
|
|
|
}
|
2007-05-10 22:26:44 +00:00
|
|
|
|
2011-01-25 21:40:11 +00:00
|
|
|
AVCodecParser ff_h264_parser = {
|
2012-08-05 09:11:04 +00:00
|
|
|
.codec_ids = { AV_CODEC_ID_H264 },
|
2015-01-17 16:30:46 +00:00
|
|
|
.priv_data_size = sizeof(H264ParseContext),
|
2011-11-02 08:34:41 +00:00
|
|
|
.parser_init = init,
|
|
|
|
.parser_parse = h264_parse,
|
2015-01-28 12:09:30 +00:00
|
|
|
.parser_close = h264_close,
|
2011-11-02 08:34:41 +00:00
|
|
|
.split = h264_split,
|
2007-05-10 22:26:44 +00:00
|
|
|
};
|