*/
/**
- * @file h261dec.c
+ * @file libavcodec/h261dec.c
* H.261 decoder.
*/
static int h261_decode_block(H261Context * h, DCTELEM * block, int n, int coded);
-static void h261_decode_init_vlc(H261Context *h){
+static av_cold void h261_decode_init_vlc(H261Context *h){
static int done = 0;
if(!done){
done = 1;
- init_vlc(&h261_mba_vlc, H261_MBA_VLC_BITS, 35,
+ INIT_VLC_STATIC(&h261_mba_vlc, H261_MBA_VLC_BITS, 35,
h261_mba_bits, 1, 1,
- h261_mba_code, 1, 1, 1);
- init_vlc(&h261_mtype_vlc, H261_MTYPE_VLC_BITS, 10,
+ h261_mba_code, 1, 1, 662);
+ INIT_VLC_STATIC(&h261_mtype_vlc, H261_MTYPE_VLC_BITS, 10,
h261_mtype_bits, 1, 1,
- h261_mtype_code, 1, 1, 1);
- init_vlc(&h261_mv_vlc, H261_MV_VLC_BITS, 17,
+ h261_mtype_code, 1, 1, 80);
+ INIT_VLC_STATIC(&h261_mv_vlc, H261_MV_VLC_BITS, 17,
&h261_mv_tab[0][1], 2, 1,
- &h261_mv_tab[0][0], 2, 1, 1);
- init_vlc(&h261_cbp_vlc, H261_CBP_VLC_BITS, 63,
+ &h261_mv_tab[0][0], 2, 1, 144);
+ INIT_VLC_STATIC(&h261_cbp_vlc, H261_CBP_VLC_BITS, 63,
&h261_cbp_tab[0][1], 2, 1,
- &h261_cbp_tab[0][0], 2, 1, 1);
+ &h261_cbp_tab[0][0], 2, 1, 512);
init_rl(&h261_rl_tcoeff, ff_h261_rl_table_store);
- init_vlc_rl(&h261_rl_tcoeff, 1);
+ INIT_VLC_RL(h261_rl_tcoeff, 552);
}
}
-static int h261_decode_init(AVCodecContext *avctx){
+static av_cold int h261_decode_init(AVCodecContext *avctx){
H261Context *h= avctx->priv_data;
MpegEncContext * const s = &h->s;
/**
* decodes the group of blocks header or slice header.
- * @return <0 if an error occured
+ * @return <0 if an error occurred
*/
static int h261_decode_gob_header(H261Context *h){
unsigned int val;
skip_bits(&s->gb, 8);
}
- if(s->qscale==0)
- return -1;
+ if(s->qscale==0) {
+ av_log(s->avctx, AV_LOG_ERROR, "qscale has forbidden 0 value\n");
+ if (s->avctx->error_recognition >= FF_ER_COMPLIANT)
+ return -1;
+ }
// For the first transmitted macroblock in a GOB, MBA is the absolute address. For
// subsequent macroblocks, MBA is the difference between the absolute addresses of
//OK, it is not where it is supposed to be ...
s->gb= s->last_resync_gb;
align_get_bits(&s->gb);
- left= s->gb.size_in_bits - get_bits_count(&s->gb);
+ left= get_bits_left(&s->gb);
for(;left>15+1+4+5; left-=8){
if(show_bits(&s->gb, 15)==0){
/**
* decodes a macroblock
- * @return <0 if an error occured
+ * @return <0 if an error occurred
*/
static int h261_decode_block(H261Context * h, DCTELEM * block,
int n, int coded)
int format, i;
uint32_t startcode= 0;
- for(i= s->gb.size_in_bits - get_bits_count(&s->gb); i>24; i-=1){
+ for(i= get_bits_left(&s->gb); i>24; i-=1){
startcode = ((startcode << 1) | get_bits(&s->gb, 1)) & 0x000FFFFF;
if(startcode == 0x10)
skip_bits(&s->gb, 8);
}
- // h261 has no I-FRAMES, but if we pass I_TYPE for the first frame, the codec crashes if it does
+ // h261 has no I-FRAMES, but if we pass FF_I_TYPE for the first frame, the codec crashes if it does
// not contain all I-blocks (e.g. when a packet is lost)
- s->pict_type = P_TYPE;
+ s->pict_type = FF_P_TYPE;
h->gob_number = 0;
return 0;
static int h261_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
H261Context *h= avctx->priv_data;
MpegEncContext *s = &h->s;
int ret;
AVFrame *pict = data;
-#ifdef DEBUG
- av_log(avctx, AV_LOG_DEBUG, "*****frame %d size=%d\n", avctx->frame_number, buf_size);
- av_log(avctx, AV_LOG_DEBUG, "bytes=%x %x %x %x\n", buf[0], buf[1], buf[2], buf[3]);
-#endif
+ dprintf(avctx, "*****frame %d size=%d\n", avctx->frame_number, buf_size);
+ dprintf(avctx, "bytes=%x %x %x %x\n", buf[0], buf[1], buf[2], buf[3]);
s->flags= avctx->flags;
s->flags2= avctx->flags2;
// for hurry_up==5
s->current_picture.pict_type= s->pict_type;
- s->current_picture.key_frame= s->pict_type == I_TYPE;
+ s->current_picture.key_frame= s->pict_type == FF_I_TYPE;
/* skip everything if we are in a hurry>=5 */
if(avctx->hurry_up>=5) return get_consumed_bytes(s, buf_size);
- if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==B_TYPE)
- ||(avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=I_TYPE)
+ if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==FF_B_TYPE)
+ ||(avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=FF_I_TYPE)
|| avctx->skip_frame >= AVDISCARD_ALL)
return get_consumed_bytes(s, buf_size);
return get_consumed_bytes(s, buf_size);
}
-static int h261_decode_end(AVCodecContext *avctx)
+static av_cold int h261_decode_end(AVCodecContext *avctx)
{
H261Context *h= avctx->priv_data;
MpegEncContext *s = &h->s;
h261_decode_end,
h261_decode_frame,
CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("H.261"),
};