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changed input and output buffer handling to be mplayer-compatible...

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based on patch by Fabian Franz <FabianFranz@gmx.de>


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9859 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
arpi 2003-04-06 16:42:15 +00:00
parent 134008a534
commit 291cef39d1
2 changed files with 42 additions and 2 deletions
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42
libmpeg2/decode.c
View File

@ -154,6 +154,21 @@ int mpeg2_parse (mpeg2dec_t * mpeg2dec)
{
int size_buffer, size_chunk, copied;
if(mpeg2dec->code==0xff){
// FIXME: we need to resync stream (esp. mpeg2dec-->code) as we
// left parser at 0x1FF last time at the end of prev. chunk.
// Why? mpeg2dec->action is set to mpeg2_header_picture_start, but
// it will call mpeg2_parse_header() too...
//
// following code copied from mpeg2_seek_header():
while (mpeg2dec->code != 0xb3 &&
((mpeg2dec->code != 0xb7 && mpeg2dec->code != 0xb8 &&
mpeg2dec->code) || mpeg2dec->sequence.width == -1))
if (seek_chunk (mpeg2dec))
return -1;
mpeg2dec->chunk_start = mpeg2dec->chunk_ptr = mpeg2dec->chunk_buffer;
}
if (mpeg2dec->action) {
int state;
@ -161,8 +176,9 @@ int mpeg2_parse (mpeg2dec_t * mpeg2dec)
if (state)
return state;
}
while (1) {
//printf("code=0x%X \n",mpeg2dec->code);
while ((unsigned) (mpeg2dec->code - mpeg2dec->first_decode_slice) <
mpeg2dec->nb_decode_slices) {
size_buffer = mpeg2dec->buf_end - mpeg2dec->buf_start;
@ -196,6 +212,13 @@ int mpeg2_parse (mpeg2dec_t * mpeg2dec)
if (seek_chunk (mpeg2dec))
return -1;
}
//printf("next_code=0x%X state=%d \n",mpeg2dec->code,mpeg2dec->state);
if(mpeg2dec->code==0xff){
mpeg2dec->action = mpeg2_header_picture_start; //mpeg2_seek_header;
return mpeg2dec->state;
}
switch (RECEIVED (mpeg2dec->code, mpeg2dec->state)) {
case RECEIVED (0x00, STATE_SLICE_1ST):
@ -248,6 +271,11 @@ int mpeg2_parse_header (mpeg2dec_t * mpeg2dec)
}
mpeg2dec->bytes_since_pts += copied;
//printf("header_code=0x%X state=%d \n",mpeg2dec->code,mpeg2dec->state);
// if(!mpeg2dec->code && mpeg2dec->state==7)
if (process_header[mpeg2dec->code & 0x0b] (mpeg2dec)) {
mpeg2dec->code = mpeg2dec->buf_start[-1];
mpeg2dec->action = mpeg2_seek_header;
@ -255,6 +283,9 @@ int mpeg2_parse_header (mpeg2dec_t * mpeg2dec)
}
mpeg2dec->code = mpeg2dec->buf_start[-1];
//printf("next_header_code=0x%X state=%d \n",mpeg2dec->code,mpeg2dec->state);
switch (RECEIVED (mpeg2dec->code, mpeg2dec->state)) {
/* state transition after a sequence header */
@ -348,6 +379,15 @@ void mpeg2_set_buf (mpeg2dec_t * mpeg2dec, uint8_t * buf[3], void * id)
fbuf->buf[1] = buf[1];
fbuf->buf[2] = buf[2];
fbuf->id = id;
// HACK! FIXME! At first I frame, copy pointers to prediction frame too!
if (mpeg2dec->custom_fbuf && !mpeg2dec->fbuf[1]->buf[0]){
mpeg2dec->fbuf[1]->buf[0]=buf[0];
mpeg2dec->fbuf[1]->buf[1]=buf[1];
mpeg2dec->fbuf[1]->buf[2]=buf[2];
mpeg2dec->fbuf[1]->id=NULL;
}
// printf("libmpeg2: FBUF 0:%p 1:%p 2:%p\n",
// mpeg2dec->fbuf[0]->buf[0],mpeg2dec->fbuf[1]->buf[0],mpeg2dec->fbuf[2]->buf[0]);
}
void mpeg2_custom_fbuf (mpeg2dec_t * mpeg2dec, int custom_fbuf)

2
libmpeg2/header.c
View File

@ -655,7 +655,7 @@ int mpeg2_header_slice_start (mpeg2dec_t * mpeg2dec)
} else {
int b_type;
mpeg2dec->decoder.convert = NULL;
//mpeg2dec->decoder.convert = NULL;
b_type = (mpeg2dec->decoder.coding_type == B_TYPE);
mpeg2_init_fbuf (&(mpeg2dec->decoder), mpeg2dec->fbuf[0]->buf,
mpeg2dec->fbuf[b_type + 1]->buf,