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Code Issues Releases Activity

Add new_frame_start and need_next_header.

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based on a patch by Bartlomiej

Originally committed as revision 12895 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-04-19 01:59:55 +00:00
parent 454064ad1e
commit 133ac890fb
4 changed files with 14 additions and 4 deletions
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3
libavcodec/aac_ac3_parser.c
View File

@ -31,6 +31,7 @@ int ff_aac_ac3_parse(AVCodecParserContext *s1,
AACAC3ParseContext *s = s1->priv_data; AACAC3ParseContext *s = s1->priv_data;
ParseContext *pc = &s->pc; ParseContext *pc = &s->pc;
int len, i; int len, i;
int new_frame_start;
i=END_NOT_FOUND; i=END_NOT_FOUND;
if(s->remaining_size <= buf_size){ if(s->remaining_size <= buf_size){
@ -41,7 +42,7 @@ int ff_aac_ac3_parse(AVCodecParserContext *s1,
len=0; len=0;
for(i=s->remaining_size; i<buf_size; i++){ for(i=s->remaining_size; i<buf_size; i++){
s->state = (s->state<<8) + buf[i]; s->state = (s->state<<8) + buf[i];
if((len=s->sync(s->state, s))) if((len=s->sync(s->state, s, &s->need_next_header, &new_frame_start)))
break; break;
} }
if(len<=0){ if(len<=0){

5
libavcodec/aac_ac3_parser.h
View File

@ -29,7 +29,8 @@
typedef struct AACAC3ParseContext { typedef struct AACAC3ParseContext {
int frame_size; int frame_size;
int header_size; int header_size;
int (*sync)(uint64_t state, struct AACAC3ParseContext *hdr_info); int (*sync)(uint64_t state, struct AACAC3ParseContext *hdr_info,
int *need_next_header, int *new_frame_start);
int channels; int channels;
int sample_rate; int sample_rate;
@ -39,6 +40,8 @@ typedef struct AACAC3ParseContext {
ParseContext pc; ParseContext pc;
int remaining_size; int remaining_size;
uint64_t state; uint64_t state;
int need_next_header;
} AACAC3ParseContext; } AACAC3ParseContext;
int ff_aac_ac3_parse(AVCodecParserContext *s1, int ff_aac_ac3_parse(AVCodecParserContext *s1,

5
libavcodec/aac_parser.c
View File

@ -27,7 +27,8 @@
#define AAC_HEADER_SIZE 7 #define AAC_HEADER_SIZE 7
static int aac_sync(uint64_t state, AACAC3ParseContext *hdr_info) static int aac_sync(uint64_t state, AACAC3ParseContext *hdr_info,
int *need_next_header, int *new_frame_start)
{ {
GetBitContext bits; GetBitContext bits;
int size, rdb, ch, sr; int size, rdb, ch, sr;
@ -67,6 +68,8 @@ static int aac_sync(uint64_t state, AACAC3ParseContext *hdr_info)
hdr_info->samples = (rdb + 1) * 1024; hdr_info->samples = (rdb + 1) * 1024;
hdr_info->bit_rate = size * 8 * hdr_info->sample_rate / hdr_info->samples; hdr_info->bit_rate = size * 8 * hdr_info->sample_rate / hdr_info->samples;
*need_next_header = 0;
*new_frame_start = 1;
return size; return size;
} }

5
libavcodec/ac3_parser.c
View File

@ -123,7 +123,8 @@ int ff_ac3_parse_header(const uint8_t buf[7], AC3HeaderInfo *hdr)
return 0; return 0;
} }
static int ac3_sync(uint64_t state, AACAC3ParseContext *hdr_info) static int ac3_sync(uint64_t state, AACAC3ParseContext *hdr_info,
int *need_next_header, int *new_frame_start)
{ {
int err; int err;
uint64_t tmp = be2me_64(state); uint64_t tmp = be2me_64(state);
@ -139,6 +140,8 @@ static int ac3_sync(uint64_t state, AACAC3ParseContext *hdr_info)
hdr_info->channels = hdr.channels; hdr_info->channels = hdr.channels;
hdr_info->samples = AC3_FRAME_SIZE; hdr_info->samples = AC3_FRAME_SIZE;
*need_next_header = 0;
*new_frame_start = 1;
return hdr.frame_size; return hdr.frame_size;
} }