summaryrefslogtreecommitdiff
path: root/contrib/ffmpeg/libavcodec/h263.c
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/ffmpeg/libavcodec/h263.c')
-rw-r--r--contrib/ffmpeg/libavcodec/h263.c55
1 files changed, 36 insertions, 19 deletions
diff --git a/contrib/ffmpeg/libavcodec/h263.c b/contrib/ffmpeg/libavcodec/h263.c
index ba51c245a..4db89e970 100644
--- a/contrib/ffmpeg/libavcodec/h263.c
+++ b/contrib/ffmpeg/libavcodec/h263.c
@@ -87,7 +87,7 @@ static uint8_t uni_DCtab_chrom_len[512];
static uint16_t uni_DCtab_lum_bits[512];
static uint16_t uni_DCtab_chrom_bits[512];
-static uint8_t (*mv_penalty)[MAX_MV*2+1]= NULL;
+static uint8_t mv_penalty[MAX_FCODE+1][MAX_MV*2+1];
static uint8_t fcode_tab[MAX_MV*2+1];
static uint8_t umv_fcode_tab[MAX_MV*2+1];
@@ -112,6 +112,8 @@ max run: 29/41
*/
#endif
+static uint8_t static_rl_table_store[5][2][2*MAX_RUN + MAX_LEVEL + 3];
+
#if 0 //3IV1 is quite rare and it slows things down a tiny bit
#define IS_3IV1 s->codec_tag == ff_get_fourcc("3IV1")
#else
@@ -211,7 +213,7 @@ void h263_encode_picture_header(MpegEncContext * s, int picture_number)
for(i=0; i<2; i++){
int div, error;
div= (s->avctx->time_base.num*1800000LL + 500LL*s->avctx->time_base.den) / ((1000LL+i)*s->avctx->time_base.den);
- div= clip(1, div, 127);
+ div= av_clip(1, div, 127);
error= FFABS(s->avctx->time_base.num*1800000LL - (1000LL+i)*s->avctx->time_base.den*div);
if(error < best_error){
best_error= error;
@@ -487,12 +489,28 @@ static inline void restore_ac_coeffs(MpegEncContext * s, DCTELEM block[6][64], i
}
/**
+ * init s->current_picture.qscale_table from s->lambda_table
+ */
+static void ff_init_qscale_tab(MpegEncContext *s){
+ int8_t * const qscale_table= s->current_picture.qscale_table;
+ int i;
+
+ for(i=0; i<s->mb_num; i++){
+ unsigned int lam= s->lambda_table[ s->mb_index2xy[i] ];
+ int qp= (lam*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
+ qscale_table[ s->mb_index2xy[i] ]= av_clip(qp, s->avctx->qmin, s->avctx->qmax);
+ }
+}
+
+/**
* modify qscale so that encoding is acually possible in h263 (limit difference to -2..2)
*/
void ff_clean_h263_qscales(MpegEncContext *s){
int i;
int8_t * const qscale_table= s->current_picture.qscale_table;
+ ff_init_qscale_tab(s);
+
for(i=1; i<s->mb_num; i++){
if(qscale_table[ s->mb_index2xy[i] ] - qscale_table[ s->mb_index2xy[i-1] ] >2)
qscale_table[ s->mb_index2xy[i] ]= qscale_table[ s->mb_index2xy[i-1] ]+2;
@@ -507,7 +525,6 @@ void ff_clean_h263_qscales(MpegEncContext *s){
int mb_xy= s->mb_index2xy[i];
if(qscale_table[mb_xy] != qscale_table[s->mb_index2xy[i-1]] && (s->mb_type[mb_xy]&CANDIDATE_MB_TYPE_INTER4V)){
- s->mb_type[mb_xy]&= ~CANDIDATE_MB_TYPE_INTER4V;
s->mb_type[mb_xy]|= CANDIDATE_MB_TYPE_INTER;
}
}
@@ -546,7 +563,6 @@ void ff_clean_mpeg4_qscales(MpegEncContext *s){
for(i=1; i<s->mb_num; i++){
int mb_xy= s->mb_index2xy[i];
if(qscale_table[mb_xy] != qscale_table[s->mb_index2xy[i-1]] && (s->mb_type[mb_xy]&CANDIDATE_MB_TYPE_DIRECT)){
- s->mb_type[mb_xy]&= ~CANDIDATE_MB_TYPE_DIRECT;
s->mb_type[mb_xy]|= CANDIDATE_MB_TYPE_BIDIR;
}
}
@@ -1783,9 +1799,6 @@ static void init_mv_penalty_and_fcode(MpegEncContext *s)
int f_code;
int mv;
- if(mv_penalty==NULL)
- mv_penalty= av_mallocz( sizeof(uint8_t)*(MAX_FCODE+1)*(2*MAX_MV+1) );
-
for(f_code=1; f_code<=MAX_FCODE; f_code++){
for(mv=-MAX_MV; mv<=MAX_MV; mv++){
int len;
@@ -2019,9 +2032,9 @@ void h263_encode_init(MpegEncContext *s)
init_uni_dc_tab();
- init_rl(&rl_inter, 1);
- init_rl(&rl_intra, 1);
- init_rl(&rl_intra_aic, 1);
+ init_rl(&rl_inter, static_rl_table_store[0]);
+ init_rl(&rl_intra, static_rl_table_store[1]);
+ init_rl(&rl_intra_aic, static_rl_table_store[2]);
init_uni_mpeg4_rl_tab(&rl_intra, uni_mpeg4_intra_rl_bits, uni_mpeg4_intra_rl_len);
init_uni_mpeg4_rl_tab(&rl_inter, uni_mpeg4_inter_rl_bits, uni_mpeg4_inter_rl_len);
@@ -2505,7 +2518,7 @@ void mpeg4_encode_picture_header(MpegEncContext * s, int picture_number)
#endif //CONFIG_ENCODERS
/**
- * set qscale and update qscale dependant variables.
+ * set qscale and update qscale dependent variables.
*/
void ff_set_qscale(MpegEncContext * s, int qscale)
{
@@ -2980,11 +2993,11 @@ void h263_decode_init_vlc(MpegEncContext *s)
init_vlc(&mv_vlc, MV_VLC_BITS, 33,
&mvtab[0][1], 2, 1,
&mvtab[0][0], 2, 1, 1);
- init_rl(&rl_inter, 1);
- init_rl(&rl_intra, 1);
- init_rl(&rvlc_rl_inter, 1);
- init_rl(&rvlc_rl_intra, 1);
- init_rl(&rl_intra_aic, 1);
+ init_rl(&rl_inter, static_rl_table_store[0]);
+ init_rl(&rl_intra, static_rl_table_store[1]);
+ init_rl(&rvlc_rl_inter, static_rl_table_store[3]);
+ init_rl(&rvlc_rl_intra, static_rl_table_store[4]);
+ init_rl(&rl_intra_aic, static_rl_table_store[2]);
init_vlc_rl(&rl_inter, 1);
init_vlc_rl(&rl_intra, 1);
init_vlc_rl(&rvlc_rl_inter, 1);
@@ -5127,7 +5140,7 @@ int h263_decode_picture_header(MpegEncContext *s)
if (ufep == 1) {
/* OPPTYPE */
format = get_bits(&s->gb, 3);
- dprintf("ufep=1, format: %d\n", format);
+ dprintf(s->avctx, "ufep=1, format: %d\n", format);
s->custom_pcf= get_bits1(&s->gb);
s->umvplus = get_bits(&s->gb, 1); /* Unrestricted Motion Vector */
if (get_bits1(&s->gb) != 0) {
@@ -5177,7 +5190,7 @@ int h263_decode_picture_header(MpegEncContext *s)
if (format == 6) {
/* Custom Picture Format (CPFMT) */
s->aspect_ratio_info = get_bits(&s->gb, 4);
- dprintf("aspect: %d\n", s->aspect_ratio_info);
+ dprintf(s->avctx, "aspect: %d\n", s->aspect_ratio_info);
/* aspect ratios:
0 - forbidden
1 - 1:1
@@ -5190,7 +5203,7 @@ int h263_decode_picture_header(MpegEncContext *s)
width = (get_bits(&s->gb, 9) + 1) * 4;
skip_bits1(&s->gb);
height = get_bits(&s->gb, 9) * 4;
- dprintf("\nH.263+ Custom picture: %dx%d\n",width,height);
+ dprintf(s->avctx, "\nH.263+ Custom picture: %dx%d\n",width,height);
if (s->aspect_ratio_info == FF_ASPECT_EXTENDED) {
/* aspected dimensions */
s->avctx->sample_aspect_ratio.num= get_bits(&s->gb, 8);
@@ -5914,6 +5927,10 @@ static int decode_vop_header(MpegEncContext *s, GetBitContext *gb){
- ROUNDED_DIV(s->last_non_b_time - s->pp_time, s->t_frame))*2;
s->pb_field_time= ( ROUNDED_DIV(s->time, s->t_frame)
- ROUNDED_DIV(s->last_non_b_time - s->pp_time, s->t_frame))*2;
+ if(!s->progressive_sequence){
+ if(s->pp_field_time <= s->pb_field_time || s->pb_field_time <= 1)
+ return FRAME_SKIPPED;
+ }
}
//av_log(s->avctx, AV_LOG_DEBUG, "last nonb %"PRId64" last_base %d time %"PRId64" pp %d pb %d t %d ppf %d pbf %d\n", s->last_non_b_time, s->last_time_base, s->time, s->pp_time, s->pb_time, s->t_frame, s->pp_field_time, s->pb_field_time);
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-26 21:57:10 +0000