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lavc/h264: move history parsing variable to H264ParseContext 

This makes h264_find_frame_end() not depend on H264Context anymore.
This commit is contained in:
Clément Bœsch 2016-06-19 12:38:28 +02:00
parent 48ea5433c8
commit 34ec084b84
2 changed files with 9 additions and 11 deletions
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4
libavcodec/h264.h
View File

@ -684,10 +684,6 @@ typedef struct H264Context {
int cur_bit_depth_luma;
int16_t slice_row[MAX_SLICES]; ///< to detect when MAX_SLICES is too low
uint8_t parse_history[6];
int parse_history_count;
int parse_last_mb;
int enable_er;
H264SEIContext sei;

16
libavcodec/h264_parser.c
View File

@ -55,13 +55,15 @@ typedef struct H264ParseContext {
int is_avc;
int nal_length_size;
int got_first;
uint8_t parse_history[6];
int parse_history_count;
int parse_last_mb;
} H264ParseContext;
static int h264_find_frame_end(H264ParseContext *p, const uint8_t *buf,
int buf_size, void *logctx)
{
H264Context *h = &p->h;
int i, j;
uint32_t state;
ParseContext *pc = &p->pc;
@ -115,15 +117,15 @@ static int h264_find_frame_end(H264ParseContext *p, const uint8_t *buf,
}
state = 7;
} else {
h->parse_history[h->parse_history_count++]= buf[i];
if (h->parse_history_count>5) {
unsigned int mb, last_mb= h->parse_last_mb;
p->parse_history[p->parse_history_count++] = buf[i];
if (p->parse_history_count > 5) {
unsigned int mb, last_mb = p->parse_last_mb;
GetBitContext gb;
init_get_bits(&gb, h->parse_history, 8*h->parse_history_count);
h->parse_history_count=0;
init_get_bits(&gb, p->parse_history, 8*p->parse_history_count);
p->parse_history_count = 0;
mb= get_ue_golomb_long(&gb);
h->parse_last_mb= mb;
p->parse_last_mb = mb;
if (pc->frame_start_found) {
if (mb <= last_mb)
goto found;