mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-09-04 15:28:19 +02:00
![Michael Niedermayer](/assets/img/avatar_default.png)
Fixes: OOM Fixes: 23817/clusterfuzz-testcase-minimized-ffmpeg_BSF_H264_METADATA_fuzzer-6300869057576960 Fixes: 28055/clusterfuzz-testcase-minimized-ffmpeg_BSF_TRACE_HEADERS_fuzzer-5706035297517568 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
538 lines
17 KiB
C
538 lines
17 KiB
C
/*
|
|
* H.264/HEVC common parsing code
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <string.h>
|
|
|
|
#include "config.h"
|
|
|
|
#include "libavutil/intmath.h"
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/mem.h"
|
|
|
|
#include "bytestream.h"
|
|
#include "hevc.h"
|
|
#include "h264.h"
|
|
#include "h2645_parse.h"
|
|
|
|
int ff_h2645_extract_rbsp(const uint8_t *src, int length,
|
|
H2645RBSP *rbsp, H2645NAL *nal, int small_padding)
|
|
{
|
|
int i, si, di;
|
|
uint8_t *dst;
|
|
|
|
nal->skipped_bytes = 0;
|
|
#define STARTCODE_TEST \
|
|
if (i + 2 < length && src[i + 1] == 0 && src[i + 2] <= 3) { \
|
|
if (src[i + 2] != 3 && src[i + 2] != 0) { \
|
|
/* startcode, so we must be past the end */ \
|
|
length = i; \
|
|
} \
|
|
break; \
|
|
}
|
|
#if HAVE_FAST_UNALIGNED
|
|
#define FIND_FIRST_ZERO \
|
|
if (i > 0 && !src[i]) \
|
|
i--; \
|
|
while (src[i]) \
|
|
i++
|
|
#if HAVE_FAST_64BIT
|
|
for (i = 0; i + 1 < length; i += 9) {
|
|
if (!((~AV_RN64(src + i) &
|
|
(AV_RN64(src + i) - 0x0100010001000101ULL)) &
|
|
0x8000800080008080ULL))
|
|
continue;
|
|
FIND_FIRST_ZERO;
|
|
STARTCODE_TEST;
|
|
i -= 7;
|
|
}
|
|
#else
|
|
for (i = 0; i + 1 < length; i += 5) {
|
|
if (!((~AV_RN32(src + i) &
|
|
(AV_RN32(src + i) - 0x01000101U)) &
|
|
0x80008080U))
|
|
continue;
|
|
FIND_FIRST_ZERO;
|
|
STARTCODE_TEST;
|
|
i -= 3;
|
|
}
|
|
#endif /* HAVE_FAST_64BIT */
|
|
#else
|
|
for (i = 0; i + 1 < length; i += 2) {
|
|
if (src[i])
|
|
continue;
|
|
if (i > 0 && src[i - 1] == 0)
|
|
i--;
|
|
STARTCODE_TEST;
|
|
}
|
|
#endif /* HAVE_FAST_UNALIGNED */
|
|
|
|
if (i >= length - 1 && small_padding) { // no escaped 0
|
|
nal->data =
|
|
nal->raw_data = src;
|
|
nal->size =
|
|
nal->raw_size = length;
|
|
return length;
|
|
} else if (i > length)
|
|
i = length;
|
|
|
|
nal->rbsp_buffer = &rbsp->rbsp_buffer[rbsp->rbsp_buffer_size];
|
|
dst = nal->rbsp_buffer;
|
|
|
|
memcpy(dst, src, i);
|
|
si = di = i;
|
|
while (si + 2 < length) {
|
|
// remove escapes (very rare 1:2^22)
|
|
if (src[si + 2] > 3) {
|
|
dst[di++] = src[si++];
|
|
dst[di++] = src[si++];
|
|
} else if (src[si] == 0 && src[si + 1] == 0 && src[si + 2] != 0) {
|
|
if (src[si + 2] == 3) { // escape
|
|
dst[di++] = 0;
|
|
dst[di++] = 0;
|
|
si += 3;
|
|
|
|
if (nal->skipped_bytes_pos) {
|
|
nal->skipped_bytes++;
|
|
if (nal->skipped_bytes_pos_size < nal->skipped_bytes) {
|
|
nal->skipped_bytes_pos_size *= 2;
|
|
av_assert0(nal->skipped_bytes_pos_size >= nal->skipped_bytes);
|
|
av_reallocp_array(&nal->skipped_bytes_pos,
|
|
nal->skipped_bytes_pos_size,
|
|
sizeof(*nal->skipped_bytes_pos));
|
|
if (!nal->skipped_bytes_pos) {
|
|
nal->skipped_bytes_pos_size = 0;
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
}
|
|
if (nal->skipped_bytes_pos)
|
|
nal->skipped_bytes_pos[nal->skipped_bytes-1] = di - 1;
|
|
}
|
|
continue;
|
|
} else // next start code
|
|
goto nsc;
|
|
}
|
|
|
|
dst[di++] = src[si++];
|
|
}
|
|
while (si < length)
|
|
dst[di++] = src[si++];
|
|
|
|
nsc:
|
|
memset(dst + di, 0, AV_INPUT_BUFFER_PADDING_SIZE);
|
|
|
|
nal->data = dst;
|
|
nal->size = di;
|
|
nal->raw_data = src;
|
|
nal->raw_size = si;
|
|
rbsp->rbsp_buffer_size += si;
|
|
|
|
return si;
|
|
}
|
|
|
|
static const char *const hevc_nal_type_name[64] = {
|
|
"TRAIL_N", // HEVC_NAL_TRAIL_N
|
|
"TRAIL_R", // HEVC_NAL_TRAIL_R
|
|
"TSA_N", // HEVC_NAL_TSA_N
|
|
"TSA_R", // HEVC_NAL_TSA_R
|
|
"STSA_N", // HEVC_NAL_STSA_N
|
|
"STSA_R", // HEVC_NAL_STSA_R
|
|
"RADL_N", // HEVC_NAL_RADL_N
|
|
"RADL_R", // HEVC_NAL_RADL_R
|
|
"RASL_N", // HEVC_NAL_RASL_N
|
|
"RASL_R", // HEVC_NAL_RASL_R
|
|
"RSV_VCL_N10", // HEVC_NAL_VCL_N10
|
|
"RSV_VCL_R11", // HEVC_NAL_VCL_R11
|
|
"RSV_VCL_N12", // HEVC_NAL_VCL_N12
|
|
"RSV_VLC_R13", // HEVC_NAL_VCL_R13
|
|
"RSV_VCL_N14", // HEVC_NAL_VCL_N14
|
|
"RSV_VCL_R15", // HEVC_NAL_VCL_R15
|
|
"BLA_W_LP", // HEVC_NAL_BLA_W_LP
|
|
"BLA_W_RADL", // HEVC_NAL_BLA_W_RADL
|
|
"BLA_N_LP", // HEVC_NAL_BLA_N_LP
|
|
"IDR_W_RADL", // HEVC_NAL_IDR_W_RADL
|
|
"IDR_N_LP", // HEVC_NAL_IDR_N_LP
|
|
"CRA_NUT", // HEVC_NAL_CRA_NUT
|
|
"RSV_IRAP_VCL22", // HEVC_NAL_RSV_IRAP_VCL22
|
|
"RSV_IRAP_VCL23", // HEVC_NAL_RSV_IRAP_VCL23
|
|
"RSV_VCL24", // HEVC_NAL_RSV_VCL24
|
|
"RSV_VCL25", // HEVC_NAL_RSV_VCL25
|
|
"RSV_VCL26", // HEVC_NAL_RSV_VCL26
|
|
"RSV_VCL27", // HEVC_NAL_RSV_VCL27
|
|
"RSV_VCL28", // HEVC_NAL_RSV_VCL28
|
|
"RSV_VCL29", // HEVC_NAL_RSV_VCL29
|
|
"RSV_VCL30", // HEVC_NAL_RSV_VCL30
|
|
"RSV_VCL31", // HEVC_NAL_RSV_VCL31
|
|
"VPS", // HEVC_NAL_VPS
|
|
"SPS", // HEVC_NAL_SPS
|
|
"PPS", // HEVC_NAL_PPS
|
|
"AUD", // HEVC_NAL_AUD
|
|
"EOS_NUT", // HEVC_NAL_EOS_NUT
|
|
"EOB_NUT", // HEVC_NAL_EOB_NUT
|
|
"FD_NUT", // HEVC_NAL_FD_NUT
|
|
"SEI_PREFIX", // HEVC_NAL_SEI_PREFIX
|
|
"SEI_SUFFIX", // HEVC_NAL_SEI_SUFFIX
|
|
"RSV_NVCL41", // HEVC_NAL_RSV_NVCL41
|
|
"RSV_NVCL42", // HEVC_NAL_RSV_NVCL42
|
|
"RSV_NVCL43", // HEVC_NAL_RSV_NVCL43
|
|
"RSV_NVCL44", // HEVC_NAL_RSV_NVCL44
|
|
"RSV_NVCL45", // HEVC_NAL_RSV_NVCL45
|
|
"RSV_NVCL46", // HEVC_NAL_RSV_NVCL46
|
|
"RSV_NVCL47", // HEVC_NAL_RSV_NVCL47
|
|
"UNSPEC48", // HEVC_NAL_UNSPEC48
|
|
"UNSPEC49", // HEVC_NAL_UNSPEC49
|
|
"UNSPEC50", // HEVC_NAL_UNSPEC50
|
|
"UNSPEC51", // HEVC_NAL_UNSPEC51
|
|
"UNSPEC52", // HEVC_NAL_UNSPEC52
|
|
"UNSPEC53", // HEVC_NAL_UNSPEC53
|
|
"UNSPEC54", // HEVC_NAL_UNSPEC54
|
|
"UNSPEC55", // HEVC_NAL_UNSPEC55
|
|
"UNSPEC56", // HEVC_NAL_UNSPEC56
|
|
"UNSPEC57", // HEVC_NAL_UNSPEC57
|
|
"UNSPEC58", // HEVC_NAL_UNSPEC58
|
|
"UNSPEC59", // HEVC_NAL_UNSPEC59
|
|
"UNSPEC60", // HEVC_NAL_UNSPEC60
|
|
"UNSPEC61", // HEVC_NAL_UNSPEC61
|
|
"UNSPEC62", // HEVC_NAL_UNSPEC62
|
|
"UNSPEC63", // HEVC_NAL_UNSPEC63
|
|
};
|
|
|
|
static const char *hevc_nal_unit_name(int nal_type)
|
|
{
|
|
av_assert0(nal_type >= 0 && nal_type < 64);
|
|
return hevc_nal_type_name[nal_type];
|
|
}
|
|
|
|
static const char *const h264_nal_type_name[32] = {
|
|
"Unspecified 0", //H264_NAL_UNSPECIFIED
|
|
"Coded slice of a non-IDR picture", // H264_NAL_SLICE
|
|
"Coded slice data partition A", // H264_NAL_DPA
|
|
"Coded slice data partition B", // H264_NAL_DPB
|
|
"Coded slice data partition C", // H264_NAL_DPC
|
|
"IDR", // H264_NAL_IDR_SLICE
|
|
"SEI", // H264_NAL_SEI
|
|
"SPS", // H264_NAL_SPS
|
|
"PPS", // H264_NAL_PPS
|
|
"AUD", // H264_NAL_AUD
|
|
"End of sequence", // H264_NAL_END_SEQUENCE
|
|
"End of stream", // H264_NAL_END_STREAM
|
|
"Filler data", // H264_NAL_FILLER_DATA
|
|
"SPS extension", // H264_NAL_SPS_EXT
|
|
"Prefix", // H264_NAL_PREFIX
|
|
"Subset SPS", // H264_NAL_SUB_SPS
|
|
"Depth parameter set", // H264_NAL_DPS
|
|
"Reserved 17", // H264_NAL_RESERVED17
|
|
"Reserved 18", // H264_NAL_RESERVED18
|
|
"Auxiliary coded picture without partitioning", // H264_NAL_AUXILIARY_SLICE
|
|
"Slice extension", // H264_NAL_EXTEN_SLICE
|
|
"Slice extension for a depth view or a 3D-AVC texture view", // H264_NAL_DEPTH_EXTEN_SLICE
|
|
"Reserved 22", // H264_NAL_RESERVED22
|
|
"Reserved 23", // H264_NAL_RESERVED23
|
|
"Unspecified 24", // H264_NAL_UNSPECIFIED24
|
|
"Unspecified 25", // H264_NAL_UNSPECIFIED25
|
|
"Unspecified 26", // H264_NAL_UNSPECIFIED26
|
|
"Unspecified 27", // H264_NAL_UNSPECIFIED27
|
|
"Unspecified 28", // H264_NAL_UNSPECIFIED28
|
|
"Unspecified 29", // H264_NAL_UNSPECIFIED29
|
|
"Unspecified 30", // H264_NAL_UNSPECIFIED30
|
|
"Unspecified 31", // H264_NAL_UNSPECIFIED31
|
|
};
|
|
|
|
static const char *h264_nal_unit_name(int nal_type)
|
|
{
|
|
av_assert0(nal_type >= 0 && nal_type < 32);
|
|
return h264_nal_type_name[nal_type];
|
|
}
|
|
|
|
static int get_bit_length(H2645NAL *nal, int skip_trailing_zeros)
|
|
{
|
|
int size = nal->size;
|
|
int v;
|
|
|
|
while (skip_trailing_zeros && size > 0 && nal->data[size - 1] == 0)
|
|
size--;
|
|
|
|
if (!size)
|
|
return 0;
|
|
|
|
v = nal->data[size - 1];
|
|
|
|
if (size > INT_MAX / 8)
|
|
return AVERROR(ERANGE);
|
|
size *= 8;
|
|
|
|
/* remove the stop bit and following trailing zeros,
|
|
* or nothing for damaged bitstreams */
|
|
if (v)
|
|
size -= ff_ctz(v) + 1;
|
|
|
|
return size;
|
|
}
|
|
|
|
/**
|
|
* @return AVERROR_INVALIDDATA if the packet is not a valid NAL unit,
|
|
* 0 otherwise
|
|
*/
|
|
static int hevc_parse_nal_header(H2645NAL *nal, void *logctx)
|
|
{
|
|
GetBitContext *gb = &nal->gb;
|
|
|
|
if (get_bits1(gb) != 0)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
nal->type = get_bits(gb, 6);
|
|
|
|
nal->nuh_layer_id = get_bits(gb, 6);
|
|
nal->temporal_id = get_bits(gb, 3) - 1;
|
|
if (nal->temporal_id < 0)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
av_log(logctx, AV_LOG_DEBUG,
|
|
"nal_unit_type: %d(%s), nuh_layer_id: %d, temporal_id: %d\n",
|
|
nal->type, hevc_nal_unit_name(nal->type), nal->nuh_layer_id, nal->temporal_id);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int h264_parse_nal_header(H2645NAL *nal, void *logctx)
|
|
{
|
|
GetBitContext *gb = &nal->gb;
|
|
|
|
if (get_bits1(gb) != 0)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
nal->ref_idc = get_bits(gb, 2);
|
|
nal->type = get_bits(gb, 5);
|
|
|
|
av_log(logctx, AV_LOG_DEBUG,
|
|
"nal_unit_type: %d(%s), nal_ref_idc: %d\n",
|
|
nal->type, h264_nal_unit_name(nal->type), nal->ref_idc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int find_next_start_code(const uint8_t *buf, const uint8_t *next_avc)
|
|
{
|
|
int i = 0;
|
|
|
|
if (buf + 3 >= next_avc)
|
|
return next_avc - buf;
|
|
|
|
while (buf + i + 3 < next_avc) {
|
|
if (buf[i] == 0 && buf[i + 1] == 0 && buf[i + 2] == 1)
|
|
break;
|
|
i++;
|
|
}
|
|
return i + 3;
|
|
}
|
|
|
|
static void alloc_rbsp_buffer(H2645RBSP *rbsp, unsigned int size, int use_ref)
|
|
{
|
|
int min_size = size;
|
|
|
|
if (size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
|
|
goto fail;
|
|
size += AV_INPUT_BUFFER_PADDING_SIZE;
|
|
|
|
if (rbsp->rbsp_buffer_alloc_size >= size &&
|
|
(!rbsp->rbsp_buffer_ref || av_buffer_is_writable(rbsp->rbsp_buffer_ref))) {
|
|
av_assert0(rbsp->rbsp_buffer);
|
|
memset(rbsp->rbsp_buffer + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
|
|
return;
|
|
}
|
|
|
|
size = FFMIN(size + size / 16 + 32, INT_MAX);
|
|
|
|
if (rbsp->rbsp_buffer_ref)
|
|
av_buffer_unref(&rbsp->rbsp_buffer_ref);
|
|
else
|
|
av_free(rbsp->rbsp_buffer);
|
|
|
|
rbsp->rbsp_buffer = av_mallocz(size);
|
|
if (!rbsp->rbsp_buffer)
|
|
goto fail;
|
|
rbsp->rbsp_buffer_alloc_size = size;
|
|
|
|
if (use_ref) {
|
|
rbsp->rbsp_buffer_ref = av_buffer_create(rbsp->rbsp_buffer, size,
|
|
NULL, NULL, 0);
|
|
if (!rbsp->rbsp_buffer_ref)
|
|
goto fail;
|
|
}
|
|
|
|
return;
|
|
|
|
fail:
|
|
rbsp->rbsp_buffer_alloc_size = 0;
|
|
if (rbsp->rbsp_buffer_ref) {
|
|
av_buffer_unref(&rbsp->rbsp_buffer_ref);
|
|
rbsp->rbsp_buffer = NULL;
|
|
} else
|
|
av_freep(&rbsp->rbsp_buffer);
|
|
|
|
return;
|
|
}
|
|
|
|
int ff_h2645_packet_split(H2645Packet *pkt, const uint8_t *buf, int length,
|
|
void *logctx, int is_nalff, int nal_length_size,
|
|
enum AVCodecID codec_id, int small_padding, int use_ref)
|
|
{
|
|
GetByteContext bc;
|
|
int consumed, ret = 0;
|
|
int next_avc = is_nalff ? 0 : length;
|
|
int64_t padding = small_padding ? 0 : MAX_MBPAIR_SIZE;
|
|
|
|
bytestream2_init(&bc, buf, length);
|
|
alloc_rbsp_buffer(&pkt->rbsp, length + padding, use_ref);
|
|
|
|
if (!pkt->rbsp.rbsp_buffer)
|
|
return AVERROR(ENOMEM);
|
|
|
|
pkt->rbsp.rbsp_buffer_size = 0;
|
|
pkt->nb_nals = 0;
|
|
while (bytestream2_get_bytes_left(&bc) >= 4) {
|
|
H2645NAL *nal;
|
|
int extract_length = 0;
|
|
int skip_trailing_zeros = 1;
|
|
|
|
if (bytestream2_tell(&bc) == next_avc) {
|
|
int i = 0;
|
|
extract_length = get_nalsize(nal_length_size,
|
|
bc.buffer, bytestream2_get_bytes_left(&bc), &i, logctx);
|
|
if (extract_length < 0)
|
|
return extract_length;
|
|
|
|
bytestream2_skip(&bc, nal_length_size);
|
|
|
|
next_avc = bytestream2_tell(&bc) + extract_length;
|
|
} else {
|
|
int buf_index;
|
|
|
|
if (bytestream2_tell(&bc) > next_avc)
|
|
av_log(logctx, AV_LOG_WARNING, "Exceeded next NALFF position, re-syncing.\n");
|
|
|
|
/* search start code */
|
|
buf_index = find_next_start_code(bc.buffer, buf + next_avc);
|
|
|
|
bytestream2_skip(&bc, buf_index);
|
|
|
|
if (!bytestream2_get_bytes_left(&bc)) {
|
|
if (pkt->nb_nals > 0) {
|
|
// No more start codes: we discarded some irrelevant
|
|
// bytes at the end of the packet.
|
|
return 0;
|
|
} else {
|
|
av_log(logctx, AV_LOG_ERROR, "No start code is found.\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
}
|
|
|
|
extract_length = FFMIN(bytestream2_get_bytes_left(&bc), next_avc - bytestream2_tell(&bc));
|
|
|
|
if (bytestream2_tell(&bc) >= next_avc) {
|
|
/* skip to the start of the next NAL */
|
|
bytestream2_skip(&bc, next_avc - bytestream2_tell(&bc));
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (pkt->nals_allocated < pkt->nb_nals + 1) {
|
|
int new_size = pkt->nals_allocated + 1;
|
|
void *tmp;
|
|
|
|
if (new_size >= INT_MAX / sizeof(*pkt->nals))
|
|
return AVERROR(ENOMEM);
|
|
|
|
tmp = av_fast_realloc(pkt->nals, &pkt->nal_buffer_size, new_size * sizeof(*pkt->nals));
|
|
if (!tmp)
|
|
return AVERROR(ENOMEM);
|
|
|
|
pkt->nals = tmp;
|
|
memset(pkt->nals + pkt->nals_allocated, 0, sizeof(*pkt->nals));
|
|
|
|
nal = &pkt->nals[pkt->nb_nals];
|
|
nal->skipped_bytes_pos_size = FFMIN(1024, extract_length/3+1); // initial buffer size
|
|
nal->skipped_bytes_pos = av_malloc_array(nal->skipped_bytes_pos_size, sizeof(*nal->skipped_bytes_pos));
|
|
if (!nal->skipped_bytes_pos)
|
|
return AVERROR(ENOMEM);
|
|
|
|
pkt->nals_allocated = new_size;
|
|
}
|
|
nal = &pkt->nals[pkt->nb_nals];
|
|
|
|
consumed = ff_h2645_extract_rbsp(bc.buffer, extract_length, &pkt->rbsp, nal, small_padding);
|
|
if (consumed < 0)
|
|
return consumed;
|
|
|
|
if (is_nalff && (extract_length != consumed) && extract_length)
|
|
av_log(logctx, AV_LOG_DEBUG,
|
|
"NALFF: Consumed only %d bytes instead of %d\n",
|
|
consumed, extract_length);
|
|
|
|
bytestream2_skip(&bc, consumed);
|
|
|
|
/* see commit 3566042a0 */
|
|
if (bytestream2_get_bytes_left(&bc) >= 4 &&
|
|
bytestream2_peek_be32(&bc) == 0x000001E0)
|
|
skip_trailing_zeros = 0;
|
|
|
|
nal->size_bits = get_bit_length(nal, skip_trailing_zeros);
|
|
|
|
if (nal->size <= 0 || nal->size_bits <= 0)
|
|
continue;
|
|
|
|
ret = init_get_bits(&nal->gb, nal->data, nal->size_bits);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Reset type in case it contains a stale value from a previously parsed NAL */
|
|
nal->type = 0;
|
|
|
|
if (codec_id == AV_CODEC_ID_HEVC)
|
|
ret = hevc_parse_nal_header(nal, logctx);
|
|
else
|
|
ret = h264_parse_nal_header(nal, logctx);
|
|
if (ret < 0) {
|
|
av_log(logctx, AV_LOG_WARNING, "Invalid NAL unit %d, skipping.\n",
|
|
nal->type);
|
|
continue;
|
|
}
|
|
|
|
pkt->nb_nals++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ff_h2645_packet_uninit(H2645Packet *pkt)
|
|
{
|
|
int i;
|
|
for (i = 0; i < pkt->nals_allocated; i++) {
|
|
av_freep(&pkt->nals[i].skipped_bytes_pos);
|
|
}
|
|
av_freep(&pkt->nals);
|
|
pkt->nals_allocated = pkt->nal_buffer_size = 0;
|
|
if (pkt->rbsp.rbsp_buffer_ref) {
|
|
av_buffer_unref(&pkt->rbsp.rbsp_buffer_ref);
|
|
pkt->rbsp.rbsp_buffer = NULL;
|
|
} else
|
|
av_freep(&pkt->rbsp.rbsp_buffer);
|
|
pkt->rbsp.rbsp_buffer_alloc_size = pkt->rbsp.rbsp_buffer_size = 0;
|
|
}
|