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avformat: split off generic NAL function helpers into their own file

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Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2024-06-16 13:55:25 -03:00
parent 0eacad6921
commit 53c8d417ed
15 changed files with 288 additions and 218 deletions
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2
libavformat/Makefile
View File

@ -35,7 +35,7 @@ OBJS-$(HAVE_LIBC_MSVCRT) += file_open.o
# subsystems
OBJS-$(CONFIG_ISO_MEDIA) += isom.o
OBJS-$(CONFIG_ISO_WRITER) += av1.o avc.o hevc.o vvc.o vpcc.o
OBJS-$(CONFIG_ISO_WRITER) += av1.o avc.o hevc.o nal.o vvc.o vpcc.o
OBJS-$(CONFIG_IAMFDEC) += iamf_reader.o iamf_parse.o iamf.o
OBJS-$(CONFIG_IAMFENC) += iamf_writer.o iamf.o
OBJS-$(CONFIG_NETWORK) += network.o

164
libavformat/avc.c
View File

@ -26,118 +26,7 @@
#include "avio.h"
#include "avc.h"
#include "avio_internal.h"
static const uint8_t *avc_find_startcode_internal(const uint8_t *p, const uint8_t *end)
{
const uint8_t *a = p + 4 - ((intptr_t)p & 3);
for (end -= 3; p < a && p < end; p++) {
if (p[0] == 0 && p[1] == 0 && p[2] == 1)
return p;
}
for (end -= 3; p < end; p += 4) {
uint32_t x = *(const uint32_t*)p;
// if ((x - 0x01000100) & (~x) & 0x80008000) // little endian
// if ((x - 0x00010001) & (~x) & 0x00800080) // big endian
if ((x - 0x01010101) & (~x) & 0x80808080) { // generic
if (p[1] == 0) {
if (p[0] == 0 && p[2] == 1)
return p;
if (p[2] == 0 && p[3] == 1)
return p+1;
}
if (p[3] == 0) {
if (p[2] == 0 && p[4] == 1)
return p+2;
if (p[4] == 0 && p[5] == 1)
return p+3;
}
}
}
for (end += 3; p < end; p++) {
if (p[0] == 0 && p[1] == 0 && p[2] == 1)
return p;
}
return end + 3;
}
const uint8_t *ff_avc_find_startcode(const uint8_t *p, const uint8_t *end){
const uint8_t *out = avc_find_startcode_internal(p, end);
if(p<out && out<end && !out[-1]) out--;
return out;
}
static int avc_parse_nal_units(AVIOContext *pb, NALUList *list,
const uint8_t *buf_in, int size)
{
const uint8_t *p = buf_in;
const uint8_t *end = p + size;
const uint8_t *nal_start, *nal_end;
size = 0;
nal_start = ff_avc_find_startcode(p, end);
for (;;) {
const size_t nalu_limit = SIZE_MAX / sizeof(*list->nalus);
while (nal_start < end && !*(nal_start++));
if (nal_start == end)
break;
nal_end = ff_avc_find_startcode(nal_start, end);
if (pb) {
avio_wb32(pb, nal_end - nal_start);
avio_write(pb, nal_start, nal_end - nal_start);
} else if (list->nb_nalus >= nalu_limit) {
return AVERROR(ERANGE);
} else {
NALU *tmp = av_fast_realloc(list->nalus, &list->nalus_array_size,
(list->nb_nalus + 1) * sizeof(*list->nalus));
if (!tmp)
return AVERROR(ENOMEM);
list->nalus = tmp;
tmp[list->nb_nalus++] = (NALU){ .offset = nal_start - p,
.size = nal_end - nal_start };
}
size += 4 + nal_end - nal_start;
nal_start = nal_end;
}
return size;
}
int ff_avc_parse_nal_units(AVIOContext *pb, const uint8_t *buf_in, int size)
{
return avc_parse_nal_units(pb, NULL, buf_in, size);
}
int ff_nal_units_create_list(NALUList *list, const uint8_t *buf, int size)
{
list->nb_nalus = 0;
return avc_parse_nal_units(NULL, list, buf, size);
}
void ff_nal_units_write_list(const NALUList *list, AVIOContext *pb,
const uint8_t *buf)
{
for (unsigned i = 0; i < list->nb_nalus; i++) {
avio_wb32(pb, list->nalus[i].size);
avio_write(pb, buf + list->nalus[i].offset, list->nalus[i].size);
}
}
int ff_avc_parse_nal_units_buf(const uint8_t *buf_in, uint8_t **buf, int *size)
{
AVIOContext *pb;
int ret = avio_open_dyn_buf(&pb);
if(ret < 0)
return ret;
ff_avc_parse_nal_units(pb, buf_in, *size);
*size = avio_close_dyn_buf(pb, buf);
return 0;
}
#include "nal.h"
int ff_isom_write_avcc(AVIOContext *pb, const uint8_t *data, int len)
{
@ -157,7 +46,7 @@ int ff_isom_write_avcc(AVIOContext *pb, const uint8_t *data, int len)
return 0;
}
ret = ff_avc_parse_nal_units_buf(data, &buf, &len);
ret = ff_nal_parse_units_buf(data, &buf, &len);
if (ret < 0)
return ret;
start = buf;
@ -283,55 +172,6 @@ int ff_avc_write_annexb_extradata(const uint8_t *in, uint8_t **buf, int *size)
return 0;
}
const uint8_t *ff_avc_mp4_find_startcode(const uint8_t *start,
const uint8_t *end,
int nal_length_size)
{
unsigned int res = 0;
if (end - start < nal_length_size)
return NULL;
while (nal_length_size--)
res = (res << 8) | *start++;
if (res > end - start)
return NULL;
return start + res;
}
uint8_t *ff_nal_unit_extract_rbsp(const uint8_t *src, uint32_t src_len,
uint32_t *dst_len, int header_len)
{
uint8_t *dst;
uint32_t i, len;
dst = av_malloc(src_len + AV_INPUT_BUFFER_PADDING_SIZE);
if (!dst)
return NULL;
/* NAL unit header */
i = len = 0;
while (i < header_len && i < src_len)
dst[len++] = src[i++];
while (i + 2 < src_len)
if (!src[i] && !src[i + 1] && src[i + 2] == 3) {
dst[len++] = src[i++];
dst[len++] = src[i++];
i++; // remove emulation_prevention_three_byte
} else
dst[len++] = src[i++];
while (i < src_len)
dst[len++] = src[i++];
memset(dst + len, 0, AV_INPUT_BUFFER_PADDING_SIZE);
*dst_len = len;
return dst;
}
static const AVRational avc_sample_aspect_ratio[17] = {
{ 0, 1 },
{ 1, 1 },

37
libavformat/avc.h
View File

@ -26,45 +26,8 @@
#include "libavutil/rational.h"
#include "avio.h"
typedef struct NALU {
int offset;
uint32_t size;
} NALU;
typedef struct NALUList {
NALU *nalus;
unsigned nalus_array_size;
unsigned nb_nalus; ///< valid entries in nalus
} NALUList;
/* This function will parse the given annex B buffer and create
* a NALUList from it. This list can be passed to ff_nal_units_write_list()
* to write the access unit reformatted to mp4.
*
* @param list A NALUList. The list->nalus and list->nalus_array_size
* must be valid when calling this function and may be updated.
* nb_nalus is set by this function on success.
* @param buf buffer containing annex B H.264 or H.265. Must be padded.
* @param size size of buf, excluding padding.
* @return < 0 on error, the size of the mp4-style packet on success.
*/
int ff_nal_units_create_list(NALUList *list, const uint8_t *buf, int size);
/* Writes a NALUList to the specified AVIOContext. The list must originate
* from ff_nal_units_create_list() with the same buf. */
void ff_nal_units_write_list(const NALUList *list, AVIOContext *pb,
const uint8_t *buf);
int ff_avc_parse_nal_units(AVIOContext *s, const uint8_t *buf, int size);
int ff_avc_parse_nal_units_buf(const uint8_t *buf_in, uint8_t **buf, int *size);
int ff_isom_write_avcc(AVIOContext *pb, const uint8_t *data, int len);
const uint8_t *ff_avc_find_startcode(const uint8_t *p, const uint8_t *end);
int ff_avc_write_annexb_extradata(const uint8_t *in, uint8_t **buf, int *size);
const uint8_t *ff_avc_mp4_find_startcode(const uint8_t *start,
const uint8_t *end,
int nal_length_size);
uint8_t *ff_nal_unit_extract_rbsp(const uint8_t *src, uint32_t src_len,
uint32_t *dst_len, int header_len);
typedef struct {
uint8_t id;

3
libavformat/flvenc.c
View File

@ -36,6 +36,7 @@
#include "avformat.h"
#include "flv.h"
#include "internal.h"
#include "nal.h"
#include "mux.h"
#include "libavutil/opt.h"
#include "libavcodec/put_bits.h"
@ -1076,7 +1077,7 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4) {
/* check if extradata looks like mp4 formatted */
if (par->extradata_size > 0 && *(uint8_t*)par->extradata != 1)
if ((ret = ff_avc_parse_nal_units_buf(pkt->data, &data, &size)) < 0)
if ((ret = ff_nal_parse_units_buf(pkt->data, &data, &size)) < 0)
return ret;
} else if (par->codec_id == AV_CODEC_ID_HEVC) {
if (par->extradata_size > 0 && *(uint8_t*)par->extradata != 1)

7
libavformat/hevc.c
View File

@ -27,6 +27,7 @@
#include "avio.h"
#include "avio_internal.h"
#include "hevc.h"
#include "nal.h"
#define MAX_SPATIAL_SEGMENTATION 4096 // max. value of u(12) field
@ -978,11 +979,11 @@ int ff_hevc_annexb2mp4(AVIOContext *pb, const uint8_t *buf_in,
uint8_t *buf, *end, *start = NULL;
if (!filter_ps) {
ret = ff_avc_parse_nal_units(pb, buf_in, size);
ret = ff_nal_parse_units(pb, buf_in, size);
goto end;
}
ret = ff_avc_parse_nal_units_buf(buf_in, &start, &size);
ret = ff_nal_parse_units_buf(buf_in, &start, &size);
if (ret < 0)
goto end;
@ -1059,7 +1060,7 @@ int ff_isom_write_hvcc(AVIOContext *pb, const uint8_t *data,
return AVERROR_INVALIDDATA;
}
ret = ff_avc_parse_nal_units_buf(data, &start, &size);
ret = ff_nal_parse_units_buf(data, &start, &size);
if (ret < 0)
return ret;

1
libavformat/hlsenc.c
View File

@ -50,6 +50,7 @@
#endif
#include "hlsplaylist.h"
#include "internal.h"
#include "nal.h"
#include "mux.h"
#include "os_support.h"
#include "url.h"

1
libavformat/matroskaenc.c
View File

@ -33,6 +33,7 @@
#include "flacenc.h"
#include "internal.h"
#include "isom.h"
#include "nal.h"
#include "matroska.h"
#include "mux.h"
#include "riff.h"

5
libavformat/movenc.c
View File

@ -63,6 +63,7 @@
#include "libavutil/uuid.h"
#include "hevc.h"
#include "rtpenc.h"
#include "nal.h"
#include "mov_chan.h"
#include "movenc_ttml.h"
#include "mux.h"
@ -6376,7 +6377,7 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
/* from x264 or from bytestream H.264 */
/* NAL reformatting needed */
if (trk->hint_track >= 0 && trk->hint_track < mov->nb_tracks) {
ret = ff_avc_parse_nal_units_buf(pkt->data, &reformatted_data,
ret = ff_nal_parse_units_buf(pkt->data, &reformatted_data,
&size);
if (ret < 0)
return ret;
@ -6389,7 +6390,7 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
goto err;
}
} else {
size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);
size = ff_nal_parse_units(pb, pkt->data, pkt->size);
}
}
} else if (par->codec_id == AV_CODEC_ID_HEVC && trk->vos_len > 6 &&

5
libavformat/movenccenc.c
View File

@ -24,6 +24,7 @@
#include "avio_internal.h"
#include "movenc.h"
#include "avc.h"
#include "nal.h"
static int auxiliary_info_alloc_size(MOVMuxCencContext* ctx, int size)
{
@ -204,13 +205,13 @@ int ff_mov_cenc_avc_parse_nal_units(MOVMuxCencContext* ctx, AVIOContext *pb,
}
size = 0;
nal_start = ff_avc_find_startcode(p, end);
nal_start = ff_nal_find_startcode(p, end);
for (;;) {
while (nal_start < end && !*(nal_start++));
if (nal_start == end)
break;
nal_end = ff_avc_find_startcode(nal_start, end);
nal_end = ff_nal_find_startcode(nal_start, end);
avio_wb32(pb, nal_end - nal_start);
avio_w8(pb, *nal_start);

3
libavformat/mxfenc.c
View File

@ -60,6 +60,7 @@
#include "avio_internal.h"
#include "internal.h"
#include "avc.h"
#include "nal.h"
#include "mux.h"
#include "mxf.h"
#include "config.h"
@ -2477,7 +2478,7 @@ static int mxf_parse_h264_frame(AVFormatContext *s, AVStream *st,
if (mxf->header_written)
break;
nal_end = ff_avc_find_startcode(buf, buf_end);
nal_end = ff_nal_find_startcode(buf, buf_end);
ret = ff_avc_decode_sps(sps, buf, nal_end - buf);
if (ret < 0) {
av_log(s, AV_LOG_ERROR, "error parsing sps\n");

190
libavformat/nal.c Normal file
View File

@ -0,0 +1,190 @@
/*
* NAL helper functions for muxers
*
* 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 <stdint.h>
#include <string.h>
#include "libavutil/mem.h"
#include "libavutil/error.h"
#include "libavcodec/defs.h"
#include "avio.h"
#include "avio_internal.h"
#include "nal.h"
static const uint8_t *nal_find_startcode_internal(const uint8_t *p, const uint8_t *end)
{
const uint8_t *a = p + 4 - ((intptr_t)p & 3);
for (end -= 3; p < a && p < end; p++) {
if (p[0] == 0 && p[1] == 0 && p[2] == 1)
return p;
}
for (end -= 3; p < end; p += 4) {
uint32_t x = *(const uint32_t*)p;
// if ((x - 0x01000100) & (~x) & 0x80008000) // little endian
// if ((x - 0x00010001) & (~x) & 0x00800080) // big endian
if ((x - 0x01010101) & (~x) & 0x80808080) { // generic
if (p[1] == 0) {
if (p[0] == 0 && p[2] == 1)
return p;
if (p[2] == 0 && p[3] == 1)
return p+1;
}
if (p[3] == 0) {
if (p[2] == 0 && p[4] == 1)
return p+2;
if (p[4] == 0 && p[5] == 1)
return p+3;
}
}
}
for (end += 3; p < end; p++) {
if (p[0] == 0 && p[1] == 0 && p[2] == 1)
return p;
}
return end + 3;
}
const uint8_t *ff_nal_find_startcode(const uint8_t *p, const uint8_t *end){
const uint8_t *out = nal_find_startcode_internal(p, end);
if(p<out && out<end && !out[-1]) out--;
return out;
}
static int nal_parse_units(AVIOContext *pb, NALUList *list,
const uint8_t *buf_in, int size)
{
const uint8_t *p = buf_in;
const uint8_t *end = p + size;
const uint8_t *nal_start, *nal_end;
size = 0;
nal_start = ff_nal_find_startcode(p, end);
for (;;) {
const size_t nalu_limit = SIZE_MAX / sizeof(*list->nalus);
while (nal_start < end && !*(nal_start++));
if (nal_start == end)
break;
nal_end = ff_nal_find_startcode(nal_start, end);
if (pb) {
avio_wb32(pb, nal_end - nal_start);
avio_write(pb, nal_start, nal_end - nal_start);
} else if (list->nb_nalus >= nalu_limit) {
return AVERROR(ERANGE);
} else {
NALU *tmp = av_fast_realloc(list->nalus, &list->nalus_array_size,
(list->nb_nalus + 1) * sizeof(*list->nalus));
if (!tmp)
return AVERROR(ENOMEM);
list->nalus = tmp;
tmp[list->nb_nalus++] = (NALU){ .offset = nal_start - p,
.size = nal_end - nal_start };
}
size += 4 + nal_end - nal_start;
nal_start = nal_end;
}
return size;
}
int ff_nal_parse_units(AVIOContext *pb, const uint8_t *buf_in, int size)
{
return nal_parse_units(pb, NULL, buf_in, size);
}
int ff_nal_units_create_list(NALUList *list, const uint8_t *buf, int size)
{
list->nb_nalus = 0;
return nal_parse_units(NULL, list, buf, size);
}
void ff_nal_units_write_list(const NALUList *list, AVIOContext *pb,
const uint8_t *buf)
{
for (unsigned i = 0; i < list->nb_nalus; i++) {
avio_wb32(pb, list->nalus[i].size);
avio_write(pb, buf + list->nalus[i].offset, list->nalus[i].size);
}
}
int ff_nal_parse_units_buf(const uint8_t *buf_in, uint8_t **buf, int *size)
{
AVIOContext *pb;
int ret = avio_open_dyn_buf(&pb);
if(ret < 0)
return ret;
ff_nal_parse_units(pb, buf_in, *size);
*size = avio_close_dyn_buf(pb, buf);
return 0;
}
const uint8_t *ff_nal_mp4_find_startcode(const uint8_t *start,
const uint8_t *end,
int nal_length_size)
{
unsigned int res = 0;
if (end - start < nal_length_size)
return NULL;
while (nal_length_size--)
res = (res << 8) | *start++;
if (res > end - start)
return NULL;
return start + res;
}
uint8_t *ff_nal_unit_extract_rbsp(const uint8_t *src, uint32_t src_len,
uint32_t *dst_len, int header_len)
{
uint8_t *dst;
uint32_t i, len;
dst = av_malloc(src_len + AV_INPUT_BUFFER_PADDING_SIZE);
if (!dst)
return NULL;
/* NAL unit header */
i = len = 0;
while (i < header_len && i < src_len)
dst[len++] = src[i++];
while (i + 2 < src_len)
if (!src[i] && !src[i + 1] && src[i + 2] == 3) {
dst[len++] = src[i++];
dst[len++] = src[i++];
i++; // remove emulation_prevention_three_byte
} else
dst[len++] = src[i++];
while (i < src_len)
dst[len++] = src[i++];
memset(dst + len, 0, AV_INPUT_BUFFER_PADDING_SIZE);
*dst_len = len;
return dst;
}

67
libavformat/nal.h Normal file
View File

@ -0,0 +1,67 @@
/*
* NAL helper functions for muxers
*
* 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
*/
#ifndef AVFORMAT_NAL_H
#define AVFORMAT_NAL_H
#include <stdint.h>
#include "avio.h"
typedef struct NALU {
int offset;
uint32_t size;
} NALU;
typedef struct NALUList {
NALU *nalus;
unsigned nalus_array_size;
unsigned nb_nalus; ///< valid entries in nalus
} NALUList;
/* This function will parse the given annex B buffer and create
* a NALUList from it. This list can be passed to ff_nal_units_write_list()
* to write the access unit reformatted to mp4.
*
* @param list A NALUList. The list->nalus and list->nalus_array_size
* must be valid when calling this function and may be updated.
* nb_nalus is set by this function on success.
* @param buf buffer containing annex B H.264 or H.265. Must be padded.
* @param size size of buf, excluding padding.
* @return < 0 on error, the size of the mp4-style packet on success.
*/
int ff_nal_units_create_list(NALUList *list, const uint8_t *buf, int size);
/* Writes a NALUList to the specified AVIOContext. The list must originate
* from ff_nal_units_create_list() with the same buf. */
void ff_nal_units_write_list(const NALUList *list, AVIOContext *pb,
const uint8_t *buf);
const uint8_t *ff_nal_find_startcode(const uint8_t *p, const uint8_t *end);
const uint8_t *ff_nal_mp4_find_startcode(const uint8_t *start,
const uint8_t *end,
int nal_length_size);
int ff_nal_parse_units(AVIOContext *s, const uint8_t *buf, int size);
int ff_nal_parse_units_buf(const uint8_t *buf_in, uint8_t **buf, int *size);
uint8_t *ff_nal_unit_extract_rbsp(const uint8_t *src, uint32_t src_len,
uint32_t *dst_len, int header_len);
#endif /* AVFORMAT_NAL_H */

9
libavformat/rtpenc_h264_hevc.c
View File

@ -31,6 +31,7 @@
#include "avformat.h"
#include "avc.h"
#include "nal.h"
#include "rtpenc.h"
static void flush_buffered(AVFormatContext *s1, int last)
@ -185,20 +186,20 @@ void ff_rtp_send_h264_hevc(AVFormatContext *s1, const uint8_t *buf1, int size)
s->timestamp = s->cur_timestamp;
s->buf_ptr = s->buf;
if (s->nal_length_size)
r = ff_avc_mp4_find_startcode(buf1, end, s->nal_length_size) ? buf1 : end;
r = ff_nal_mp4_find_startcode(buf1, end, s->nal_length_size) ? buf1 : end;
else
r = ff_avc_find_startcode(buf1, end);
r = ff_nal_find_startcode(buf1, end);
while (r < end) {
const uint8_t *r1;
if (s->nal_length_size) {
r1 = ff_avc_mp4_find_startcode(r, end, s->nal_length_size);
r1 = ff_nal_mp4_find_startcode(r, end, s->nal_length_size);
if (!r1)
r1 = end;
r += s->nal_length_size;
} else {
while (!*(r++));
r1 = ff_avc_find_startcode(r, end);
r1 = ff_nal_find_startcode(r, end);
}
nal_send(s1, r, r1 - r, r1 == end);
r = r1;

5
libavformat/sdp.c
View File

@ -33,6 +33,7 @@
#include "internal.h"
#include "avc.h"
#include "hevc.h"
#include "nal.h"
#include "rtp.h"
#include "version.h"
#if CONFIG_NETWORK
@ -190,14 +191,14 @@ static int extradata2psets(AVFormatContext *s, const AVCodecParameters *par,
}
memcpy(psets, pset_string, strlen(pset_string));
p = psets + strlen(pset_string);
r = ff_avc_find_startcode(extradata, extradata + extradata_size);
r = ff_nal_find_startcode(extradata, extradata + extradata_size);
while (r < extradata + extradata_size) {
const uint8_t *r1;
uint8_t nal_type;
while (!*(r++));
nal_type = *r & 0x1f;
r1 = ff_avc_find_startcode(r, extradata + extradata_size);
r1 = ff_nal_find_startcode(r, extradata + extradata_size);
if (nal_type != 7 && nal_type != 8) { /* Only output SPS and PPS */
r = r1;
continue;

7
libavformat/vvc.c
View File

@ -30,6 +30,7 @@
#include "avc.h"
#include "avio.h"
#include "avio_internal.h"
#include "nal.h"
#include "vvc.h"
enum {
@ -813,11 +814,11 @@ int ff_vvc_annexb2mp4(AVIOContext *pb, const uint8_t *buf_in,
uint8_t *buf, *end, *start = NULL;
if (!filter_ps) {
ret = ff_avc_parse_nal_units(pb, buf_in, size);
ret = ff_nal_parse_units(pb, buf_in, size);
goto end;
}
ret = ff_avc_parse_nal_units_buf(buf_in, &start, &size);
ret = ff_nal_parse_units_buf(buf_in, &start, &size);
if (ret < 0)
goto end;
@ -894,7 +895,7 @@ int ff_isom_write_vvcc(AVIOContext *pb, const uint8_t *data,
return AVERROR_INVALIDDATA;
}
ret = ff_avc_parse_nal_units_buf(data, &start, &size);
ret = ff_nal_parse_units_buf(data, &start, &size);
if (ret < 0)
return ret;