* h263 decoder.
*/
-//#define DEBUG
+#define UNCHECKED_BITSTREAM_READER 1
#include <limits.h>
-#include "dsputil.h"
+#include "libavutil/attributes.h"
+#include "libavutil/internal.h"
+#include "libavutil/mathematics.h"
#include "avcodec.h"
#include "mpegvideo.h"
#include "h263.h"
#include "mathops.h"
+#include "mpegutils.h"
#include "unary.h"
#include "flv.h"
#include "mpeg4video.h"
-//#undef NDEBUG
-//#include <assert.h>
-
// The defines below define the number of bits that are read at once for
// reading vlc values. Changing these may improve speed and data cache needs
// be aware though that decreasing them may need the number of stages that is
void ff_h263_show_pict_info(MpegEncContext *s){
if(s->avctx->debug&FF_DEBUG_PICT_INFO){
av_log(s->avctx, AV_LOG_DEBUG, "qp:%d %c size:%d rnd:%d%s%s%s%s%s%s%s%s%s %d/%d\n",
- s->qscale, av_get_pict_type_char(s->pict_type),
+ s->qscale, av_get_picture_type_char(s->pict_type),
s->gb.size_in_bits, 1-s->no_rounding,
s->obmc ? " AP" : "",
s->umvplus ? " UMV" : "",
s->modified_quant ? " MQ" : "",
s->loop_filter ? " LOOP" : "",
s->h263_slice_structured ? " SS" : "",
- s->avctx->time_base.den, s->avctx->time_base.num
+ s->avctx->framerate.num, s->avctx->framerate.den
);
}
}
/* init vlcs */
/* XXX: find a better solution to handle static init */
-void h263_decode_init_vlc(MpegEncContext *s)
+av_cold void ff_h263_decode_init_vlc(void)
{
- static int done = 0;
+ static volatile int done = 0;
if (!done) {
- done = 1;
-
INIT_VLC_STATIC(&ff_h263_intra_MCBPC_vlc, INTRA_MCBPC_VLC_BITS, 9,
ff_h263_intra_MCBPC_bits, 1, 1,
ff_h263_intra_MCBPC_code, 1, 1, 72);
&ff_h263_cbpy_tab[0][1], 2, 1,
&ff_h263_cbpy_tab[0][0], 2, 1, 64);
INIT_VLC_STATIC(&mv_vlc, MV_VLC_BITS, 33,
- &mvtab[0][1], 2, 1,
- &mvtab[0][0], 2, 1, 538);
- init_rl(&ff_h263_rl_inter, ff_h263_static_rl_table_store[0]);
- init_rl(&rl_intra_aic, ff_h263_static_rl_table_store[1]);
+ &ff_mvtab[0][1], 2, 1,
+ &ff_mvtab[0][0], 2, 1, 538);
+ ff_init_rl(&ff_h263_rl_inter, ff_h263_static_rl_table_store[0]);
+ ff_init_rl(&ff_rl_intra_aic, ff_h263_static_rl_table_store[1]);
INIT_VLC_RL(ff_h263_rl_inter, 554);
- INIT_VLC_RL(rl_intra_aic, 554);
+ INIT_VLC_RL(ff_rl_intra_aic, 554);
INIT_VLC_STATIC(&h263_mbtype_b_vlc, H263_MBTYPE_B_VLC_BITS, 15,
- &h263_mbtype_b_tab[0][1], 2, 1,
- &h263_mbtype_b_tab[0][0], 2, 1, 80);
+ &ff_h263_mbtype_b_tab[0][1], 2, 1,
+ &ff_h263_mbtype_b_tab[0][0], 2, 1, 80);
INIT_VLC_STATIC(&cbpc_b_vlc, CBPC_B_VLC_BITS, 4,
- &cbpc_b_tab[0][1], 2, 1,
- &cbpc_b_tab[0][0], 2, 1, 8);
+ &ff_cbpc_b_tab[0][1], 2, 1,
+ &ff_cbpc_b_tab[0][0], 2, 1, 8);
+ done = 1;
}
}
}
/**
- * decodes the group of blocks header or slice header.
+ * Decode the group of blocks header or slice header.
* @return <0 if an error occurred
*/
static int h263_decode_gob_header(MpegEncContext *s)
{
- unsigned int val, gfid, gob_number;
+ unsigned int val, gob_number;
int left;
/* Check for GOB Start Code */
s->qscale = get_bits(&s->gb, 5); /* SQUANT */
if(get_bits1(&s->gb)==0)
return -1;
- gfid = get_bits(&s->gb, 2); /* GFID */
+ skip_bits(&s->gb, 2); /* GFID */
}else{
gob_number = get_bits(&s->gb, 5); /* GN */
s->mb_x= 0;
s->mb_y= s->gob_index* gob_number;
- gfid = get_bits(&s->gb, 2); /* GFID */
+ skip_bits(&s->gb, 2); /* GFID */
s->qscale = get_bits(&s->gb, 5); /* GQUANT */
}
}
/**
- * finds the next resync_marker
- * @param p pointer to buffer to scan
- * @param end pointer to the end of the buffer
- * @return pointer to the next resync_marker, or end if none was found
- */
-const uint8_t *ff_h263_find_resync_marker(const uint8_t *restrict p, const uint8_t * restrict end)
-{
- assert(p < end);
-
- end-=2;
- p++;
- for(;p<end; p+=2){
- if(!*p){
- if (!p[-1] && p[1]) return p - 1;
- else if(!p[ 1] && p[2]) return p;
- }
- }
- return end+2;
-}
-
-/**
- * decodes the group of blocks / video packet header.
+ * Decode the group of blocks / video packet header.
* @return bit position of the resync_marker, or <0 if none was found
*/
int ff_h263_resync(MpegEncContext *s){
int left, pos, ret;
- if(s->codec_id==CODEC_ID_MPEG4){
+ if(s->codec_id==AV_CODEC_ID_MPEG4){
skip_bits1(&s->gb);
align_get_bits(&s->gb);
}
if(show_bits(&s->gb, 16)==0){
pos= get_bits_count(&s->gb);
- if(CONFIG_MPEG4_DECODER && s->codec_id==CODEC_ID_MPEG4)
- ret= mpeg4_decode_video_packet_header(s);
+ if(CONFIG_MPEG4_DECODER && s->codec_id==AV_CODEC_ID_MPEG4)
+ ret= ff_mpeg4_decode_video_packet_header(s->avctx->priv_data);
else
ret= h263_decode_gob_header(s);
if(ret>=0)
GetBitContext bak= s->gb;
pos= get_bits_count(&s->gb);
- if(CONFIG_MPEG4_DECODER && s->codec_id==CODEC_ID_MPEG4)
- ret= mpeg4_decode_video_packet_header(s);
+ if(CONFIG_MPEG4_DECODER && s->codec_id==AV_CODEC_ID_MPEG4)
+ ret= ff_mpeg4_decode_video_packet_header(s->avctx->priv_data);
else
ret= h263_decode_gob_header(s);
if(ret>=0)
return -1;
}
-int h263_decode_motion(MpegEncContext * s, int pred, int f_code)
+int ff_h263_decode_motion(MpegEncContext * s, int pred, int f_code)
{
- int code, val, sign, shift, l;
+ int code, val, sign, shift;
code = get_vlc2(&s->gb, mv_vlc.table, MV_VLC_BITS, 2);
if (code == 0)
/* modulo decoding */
if (!s->h263_long_vectors) {
- l = INT_BIT - 5 - f_code;
- val = (val<<l)>>l;
+ val = sign_extend(val, 5 + f_code);
} else {
/* horrible h263 long vector mode */
if (pred < -31 && val < -63)
}
-/* Decodes RVLC of H.263+ UMV */
+/* Decode RVLC of H.263+ UMV */
static int h263p_decode_umotion(MpegEncContext * s, int pred)
{
int code = 0, sign;
s->block_index[i]+= 1;
s->mb_x++;
- assert(s->pict_type == FF_P_TYPE);
+ av_assert2(s->pict_type == AV_PICTURE_TYPE_P);
do{
if (get_bits1(&s->gb)) {
/* skip mb */
- mot_val = s->current_picture.motion_val[0][ s->block_index[0] ];
+ mot_val = s->current_picture.motion_val[0][s->block_index[0]];
mot_val[0 ]= mot_val[2 ]=
mot_val[0+stride]= mot_val[2+stride]= 0;
mot_val[1 ]= mot_val[3 ]=
mot_val[1+stride]= mot_val[3+stride]= 0;
- s->current_picture.mb_type[xy]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
+ s->current_picture.mb_type[xy] = MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
goto end;
}
cbpc = get_vlc2(&s->gb, ff_h263_inter_MCBPC_vlc.table, INTER_MCBPC_VLC_BITS, 2);
}while(cbpc == 20);
if(cbpc & 4){
- s->current_picture.mb_type[xy]= MB_TYPE_INTRA;
+ s->current_picture.mb_type[xy] = MB_TYPE_INTRA;
}else{
get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1);
if (cbpc & 8) {
}
if ((cbpc & 16) == 0) {
- s->current_picture.mb_type[xy]= MB_TYPE_16x16 | MB_TYPE_L0;
+ s->current_picture.mb_type[xy] = MB_TYPE_16x16 | MB_TYPE_L0;
/* 16x16 motion prediction */
- mot_val= h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
+ mot_val= ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
if (s->umvplus)
mx = h263p_decode_umotion(s, pred_x);
else
- mx = h263_decode_motion(s, pred_x, 1);
+ mx = ff_h263_decode_motion(s, pred_x, 1);
if (s->umvplus)
my = h263p_decode_umotion(s, pred_y);
else
- my = h263_decode_motion(s, pred_y, 1);
+ my = ff_h263_decode_motion(s, pred_y, 1);
mot_val[0 ]= mot_val[2 ]=
mot_val[0+stride]= mot_val[2+stride]= mx;
mot_val[1 ]= mot_val[3 ]=
mot_val[1+stride]= mot_val[3+stride]= my;
} else {
- s->current_picture.mb_type[xy]= MB_TYPE_8x8 | MB_TYPE_L0;
+ s->current_picture.mb_type[xy] = MB_TYPE_8x8 | MB_TYPE_L0;
for(i=0;i<4;i++) {
- mot_val = h263_pred_motion(s, i, 0, &pred_x, &pred_y);
+ mot_val = ff_h263_pred_motion(s, i, 0, &pred_x, &pred_y);
if (s->umvplus)
mx = h263p_decode_umotion(s, pred_x);
else
- mx = h263_decode_motion(s, pred_x, 1);
+ mx = ff_h263_decode_motion(s, pred_x, 1);
if (s->umvplus)
my = h263p_decode_umotion(s, pred_y);
else
- my = h263_decode_motion(s, pred_y, 1);
+ my = ff_h263_decode_motion(s, pred_y, 1);
if (s->umvplus && (mx - pred_x) == 1 && (my - pred_y) == 1)
skip_bits1(&s->gb); /* Bit stuffing to prevent PSC */
mot_val[0] = mx;
if(s->modified_quant){
if(get_bits1(&s->gb))
- s->qscale= modified_quant_tab[get_bits1(&s->gb)][ s->qscale ];
+ s->qscale= ff_modified_quant_tab[get_bits1(&s->gb)][ s->qscale ];
else
s->qscale= get_bits(&s->gb, 5);
}else
ff_set_qscale(s, s->qscale);
}
-static int h263_decode_block(MpegEncContext * s, DCTELEM * block,
+static int h263_decode_block(MpegEncContext * s, int16_t * block,
int n, int coded)
{
- int code, level, i, j, last, run;
+ int level, i, j, run;
RLTable *rl = &ff_h263_rl_inter;
const uint8_t *scan_table;
GetBitContext gb= s->gb;
scan_table = s->intra_scantable.permutated;
if (s->h263_aic && s->mb_intra) {
- rl = &rl_intra_aic;
+ rl = &ff_rl_intra_aic;
i = 0;
if (s->ac_pred) {
if (s->h263_aic_dir)
}
} else if (s->mb_intra) {
/* DC coef */
- if(s->codec_id == CODEC_ID_RV10){
-#if CONFIG_RV10_DECODER
- if (s->rv10_version == 3 && s->pict_type == FF_I_TYPE) {
+ if (CONFIG_RV10_DECODER && s->codec_id == AV_CODEC_ID_RV10) {
+ if (s->rv10_version == 3 && s->pict_type == AV_PICTURE_TYPE_I) {
int component, diff;
component = (n <= 3 ? 0 : n - 4 + 1);
level = s->last_dc[component];
if (s->rv10_first_dc_coded[component]) {
- diff = rv_decode_dc(s, n);
+ diff = ff_rv_decode_dc(s, n);
if (diff == 0xffff)
return -1;
level += diff;
if (level == 255)
level = 128;
}
-#endif
}else{
level = get_bits(&s->gb, 8);
if((level&0x7F) == 0){
av_log(s->avctx, AV_LOG_ERROR, "illegal dc %d at %d %d\n", level, s->mb_x, s->mb_y);
- if(s->error_recognition >= FF_ER_COMPLIANT)
+ if(s->err_recognition & (AV_EF_BITSTREAM|AV_EF_COMPLIANT))
return -1;
}
if (level == 255)
return 0;
}
retry:
+ {
+ OPEN_READER(re, &s->gb);
+ i--; // offset by -1 to allow direct indexing of scan_table
for(;;) {
- code = get_vlc2(&s->gb, rl->vlc.table, TEX_VLC_BITS, 2);
- if (code < 0){
- av_log(s->avctx, AV_LOG_ERROR, "illegal ac vlc code at %dx%d\n", s->mb_x, s->mb_y);
- return -1;
- }
- if (code == rl->n) {
+ UPDATE_CACHE(re, &s->gb);
+ GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
+ if (run == 66) {
+ if (level){
+ CLOSE_READER(re, &s->gb);
+ av_log(s->avctx, AV_LOG_ERROR, "illegal ac vlc code at %dx%d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
/* escape */
if (CONFIG_FLV_DECODER && s->h263_flv > 1) {
- ff_flv2_decode_ac_esc(&s->gb, &level, &run, &last);
+ int is11 = SHOW_UBITS(re, &s->gb, 1);
+ SKIP_CACHE(re, &s->gb, 1);
+ run = SHOW_UBITS(re, &s->gb, 7) + 1;
+ if (is11) {
+ SKIP_COUNTER(re, &s->gb, 1 + 7);
+ UPDATE_CACHE(re, &s->gb);
+ level = SHOW_SBITS(re, &s->gb, 11);
+ SKIP_COUNTER(re, &s->gb, 11);
+ } else {
+ SKIP_CACHE(re, &s->gb, 7);
+ level = SHOW_SBITS(re, &s->gb, 7);
+ SKIP_COUNTER(re, &s->gb, 1 + 7 + 7);
+ }
} else {
- last = get_bits1(&s->gb);
- run = get_bits(&s->gb, 6);
- level = (int8_t)get_bits(&s->gb, 8);
+ run = SHOW_UBITS(re, &s->gb, 7) + 1;
+ SKIP_CACHE(re, &s->gb, 7);
+ level = (int8_t)SHOW_UBITS(re, &s->gb, 8);
+ SKIP_COUNTER(re, &s->gb, 7 + 8);
if(level == -128){
- if (s->codec_id == CODEC_ID_RV10) {
+ UPDATE_CACHE(re, &s->gb);
+ if (s->codec_id == AV_CODEC_ID_RV10) {
/* XXX: should patch encoder too */
- level = get_sbits(&s->gb, 12);
+ level = SHOW_SBITS(re, &s->gb, 12);
+ SKIP_COUNTER(re, &s->gb, 12);
}else{
- level = get_bits(&s->gb, 5);
- level |= get_sbits(&s->gb, 6)<<5;
+ level = SHOW_UBITS(re, &s->gb, 5);
+ SKIP_CACHE(re, &s->gb, 5);
+ level |= SHOW_SBITS(re, &s->gb, 6)<<5;
+ SKIP_COUNTER(re, &s->gb, 5 + 6);
}
}
}
} else {
- run = rl->table_run[code];
- level = rl->table_level[code];
- last = code >= rl->last;
- if (get_bits1(&s->gb))
+ if (SHOW_UBITS(re, &s->gb, 1))
level = -level;
+ SKIP_COUNTER(re, &s->gb, 1);
}
i += run;
if (i >= 64){
+ CLOSE_READER(re, &s->gb);
+ // redo update without last flag, revert -1 offset
+ i = i - run + ((run-1)&63) + 1;
+ if (i < 64) {
+ // only last marker, no overrun
+ block[scan_table[i]] = level;
+ break;
+ }
if(s->alt_inter_vlc && rl == &ff_h263_rl_inter && !s->mb_intra){
//Looks like a hack but no, it's the way it is supposed to work ...
- rl = &rl_intra_aic;
+ rl = &ff_rl_intra_aic;
i = 0;
s->gb= gb;
- s->dsp.clear_block(block);
+ s->bdsp.clear_block(block);
goto retry;
}
av_log(s->avctx, AV_LOG_ERROR, "run overflow at %dx%d i:%d\n", s->mb_x, s->mb_y, s->mb_intra);
}
j = scan_table[i];
block[j] = level;
- if (last)
- break;
- i++;
+ }
}
not_coded:
if (s->mb_intra && s->h263_aic) {
- h263_pred_acdc(s, block, n);
+ ff_h263_pred_acdc(s, block, n);
i = 63;
}
s->block_last_index[n] = i;
static int h263_skip_b_part(MpegEncContext *s, int cbp)
{
- LOCAL_ALIGNED_16(DCTELEM, dblock, [64]);
+ LOCAL_ALIGNED_16(int16_t, dblock, [64]);
int i, mbi;
+ int bli[6];
/* we have to set s->mb_intra to zero to decode B-part of PB-frame correctly
* but real value should be restored in order to be used later (in OBMC condition)
*/
mbi = s->mb_intra;
+ memcpy(bli, s->block_last_index, sizeof(bli));
s->mb_intra = 0;
for (i = 0; i < 6; i++) {
if (h263_decode_block(s, dblock, i, cbp&32) < 0)
cbp+=cbp;
}
s->mb_intra = mbi;
+ memcpy(s->block_last_index, bli, sizeof(bli));
return 0;
}
}
int ff_h263_decode_mb(MpegEncContext *s,
- DCTELEM block[6][64])
+ int16_t block[6][64])
{
int cbpc, cbpy, i, cbp, pred_x, pred_y, mx, my, dquant;
int16_t *mot_val;
const int xy= s->mb_x + s->mb_y * s->mb_stride;
int cbpb = 0, pb_mv_count = 0;
- assert(!s->h263_pred);
+ av_assert2(!s->h263_pred);
- if (s->pict_type == FF_P_TYPE) {
+ if (s->pict_type == AV_PICTURE_TYPE_P) {
do{
if (get_bits1(&s->gb)) {
/* skip mb */
s->block_last_index[i] = -1;
s->mv_dir = MV_DIR_FORWARD;
s->mv_type = MV_TYPE_16X16;
- s->current_picture.mb_type[xy]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
+ s->current_picture.mb_type[xy] = MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
s->mv[0][0][0] = 0;
s->mv[0][0][1] = 0;
s->mb_skipped = !(s->obmc | s->loop_filter);
}
}while(cbpc == 20);
- s->dsp.clear_blocks(s->block[0]);
+ s->bdsp.clear_blocks(s->block[0]);
dquant = cbpc & 8;
s->mb_intra = ((cbpc & 4) != 0);
s->mv_dir = MV_DIR_FORWARD;
if ((cbpc & 16) == 0) {
- s->current_picture.mb_type[xy]= MB_TYPE_16x16 | MB_TYPE_L0;
+ s->current_picture.mb_type[xy] = MB_TYPE_16x16 | MB_TYPE_L0;
/* 16x16 motion prediction */
s->mv_type = MV_TYPE_16X16;
- h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
+ ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
if (s->umvplus)
mx = h263p_decode_umotion(s, pred_x);
else
- mx = h263_decode_motion(s, pred_x, 1);
+ mx = ff_h263_decode_motion(s, pred_x, 1);
if (mx >= 0xffff)
return -1;
if (s->umvplus)
my = h263p_decode_umotion(s, pred_y);
else
- my = h263_decode_motion(s, pred_y, 1);
+ my = ff_h263_decode_motion(s, pred_y, 1);
if (my >= 0xffff)
return -1;
if (s->umvplus && (mx - pred_x) == 1 && (my - pred_y) == 1)
skip_bits1(&s->gb); /* Bit stuffing to prevent PSC */
} else {
- s->current_picture.mb_type[xy]= MB_TYPE_8x8 | MB_TYPE_L0;
+ s->current_picture.mb_type[xy] = MB_TYPE_8x8 | MB_TYPE_L0;
s->mv_type = MV_TYPE_8X8;
for(i=0;i<4;i++) {
- mot_val = h263_pred_motion(s, i, 0, &pred_x, &pred_y);
+ mot_val = ff_h263_pred_motion(s, i, 0, &pred_x, &pred_y);
if (s->umvplus)
mx = h263p_decode_umotion(s, pred_x);
else
- mx = h263_decode_motion(s, pred_x, 1);
+ mx = ff_h263_decode_motion(s, pred_x, 1);
if (mx >= 0xffff)
return -1;
if (s->umvplus)
my = h263p_decode_umotion(s, pred_y);
else
- my = h263_decode_motion(s, pred_y, 1);
+ my = ff_h263_decode_motion(s, pred_y, 1);
if (my >= 0xffff)
return -1;
s->mv[0][i][0] = mx;
mot_val[1] = my;
}
}
- } else if(s->pict_type==FF_B_TYPE) {
+ } else if(s->pict_type==AV_PICTURE_TYPE_B) {
int mb_type;
const int stride= s->b8_stride;
- int16_t *mot_val0 = s->current_picture.motion_val[0][ 2*(s->mb_x + s->mb_y*stride) ];
- int16_t *mot_val1 = s->current_picture.motion_val[1][ 2*(s->mb_x + s->mb_y*stride) ];
+ int16_t *mot_val0 = s->current_picture.motion_val[0][2 * (s->mb_x + s->mb_y * stride)];
+ int16_t *mot_val1 = s->current_picture.motion_val[1][2 * (s->mb_x + s->mb_y * stride)];
// const int mv_xy= s->mb_x + 1 + s->mb_y * s->mb_stride;
//FIXME ugly
s->mb_intra = IS_INTRA(mb_type);
if(HAS_CBP(mb_type)){
- s->dsp.clear_blocks(s->block[0]);
+ s->bdsp.clear_blocks(s->block[0]);
cbpc = get_vlc2(&s->gb, cbpc_b_vlc.table, CBPC_B_VLC_BITS, 1);
if(s->mb_intra){
dquant = IS_QUANT(mb_type);
}else
cbp=0;
- assert(!s->mb_intra);
+ av_assert2(!s->mb_intra);
if(IS_QUANT(mb_type)){
h263_decode_dquant(s);
//FIXME UMV
if(USES_LIST(mb_type, 0)){
- int16_t *mot_val= h263_pred_motion(s, 0, 0, &mx, &my);
+ int16_t *mot_val= ff_h263_pred_motion(s, 0, 0, &mx, &my);
s->mv_dir = MV_DIR_FORWARD;
- mx = h263_decode_motion(s, mx, 1);
- my = h263_decode_motion(s, my, 1);
+ mx = ff_h263_decode_motion(s, mx, 1);
+ my = ff_h263_decode_motion(s, my, 1);
s->mv[0][0][0] = mx;
s->mv[0][0][1] = my;
}
if(USES_LIST(mb_type, 1)){
- int16_t *mot_val= h263_pred_motion(s, 0, 1, &mx, &my);
+ int16_t *mot_val= ff_h263_pred_motion(s, 0, 1, &mx, &my);
s->mv_dir |= MV_DIR_BACKWARD;
- mx = h263_decode_motion(s, mx, 1);
- my = h263_decode_motion(s, my, 1);
+ mx = ff_h263_decode_motion(s, mx, 1);
+ my = ff_h263_decode_motion(s, my, 1);
s->mv[1][0][0] = mx;
s->mv[1][0][1] = my;
}
}
- s->current_picture.mb_type[xy]= mb_type;
+ s->current_picture.mb_type[xy] = mb_type;
} else { /* I-Frame */
do{
cbpc = get_vlc2(&s->gb, ff_h263_intra_MCBPC_vlc.table, INTRA_MCBPC_VLC_BITS, 2);
}
}while(cbpc == 8);
- s->dsp.clear_blocks(s->block[0]);
+ s->bdsp.clear_blocks(s->block[0]);
dquant = cbpc & 4;
s->mb_intra = 1;
intra:
- s->current_picture.mb_type[xy]= MB_TYPE_INTRA;
+ s->current_picture.mb_type[xy] = MB_TYPE_INTRA;
if (s->h263_aic) {
s->ac_pred = get_bits1(&s->gb);
if(s->ac_pred){
- s->current_picture.mb_type[xy]= MB_TYPE_INTRA | MB_TYPE_ACPRED;
+ s->current_picture.mb_type[xy] = MB_TYPE_INTRA | MB_TYPE_ACPRED;
s->h263_aic_dir = get_bits1(&s->gb);
}
}
while(pb_mv_count--){
- h263_decode_motion(s, 0, 1);
- h263_decode_motion(s, 0, 1);
+ ff_h263_decode_motion(s, 0, 1);
+ ff_h263_decode_motion(s, 0, 1);
}
/* decode each block */
if(s->pb_frame && h263_skip_b_part(s, cbpb) < 0)
return -1;
if(s->obmc && !s->mb_intra){
- if(s->pict_type == FF_P_TYPE && s->mb_x+1<s->mb_width && s->mb_num_left != 1)
+ if(s->pict_type == AV_PICTURE_TYPE_P && s->mb_x+1<s->mb_width && s->mb_num_left != 1)
preview_obmc(s);
}
end:
{
int v= show_bits(&s->gb, 16);
- if(get_bits_count(&s->gb) + 16 > s->gb.size_in_bits){
- v>>= get_bits_count(&s->gb) + 16 - s->gb.size_in_bits;
+ if (get_bits_left(&s->gb) < 16) {
+ v >>= 16 - get_bits_left(&s->gb);
}
if(v==0)
}
/* most is hardcoded. should extend to handle all h263 streams */
-int h263_decode_picture_header(MpegEncContext *s)
+int ff_h263_decode_picture_header(MpegEncContext *s)
{
int format, width, height, i;
uint32_t startcode;
align_get_bits(&s->gb);
+ if (show_bits(&s->gb, 2) == 2 && s->avctx->frame_number == 0) {
+ av_log(s->avctx, AV_LOG_WARNING, "Header looks like RTP instead of H.263\n");
+ }
+
startcode= get_bits(&s->gb, 22-8);
for(i= get_bits_left(&s->gb); i>24; i-=8) {
i = get_bits(&s->gb, 8); /* picture timestamp */
if( (s->picture_number&~0xFF)+i < s->picture_number)
i+= 256;
- s->current_picture_ptr->pts=
s->picture_number= (s->picture_number&~0xFF) + i;
/* PTYPE starts here */
if (format != 7 && format != 6) {
s->h263_plus = 0;
/* H.263v1 */
- width = h263_format[format][0];
- height = h263_format[format][1];
+ width = ff_h263_format[format][0];
+ height = ff_h263_format[format][1];
if (!width)
return -1;
- s->pict_type = FF_I_TYPE + get_bits1(&s->gb);
+ s->pict_type = AV_PICTURE_TYPE_I + get_bits1(&s->gb);
s->h263_long_vectors = get_bits1(&s->gb);
s->width = width;
s->height = height;
s->avctx->sample_aspect_ratio= (AVRational){12,11};
- s->avctx->time_base= (AVRational){1001, 30000};
+ s->avctx->framerate = (AVRational){ 30000, 1001 };
} else {
int ufep;
s->h263_aic = get_bits1(&s->gb); /* Advanced Intra Coding (AIC) */
s->loop_filter= get_bits1(&s->gb);
s->unrestricted_mv = s->umvplus || s->obmc || s->loop_filter;
+ if(s->avctx->lowres)
+ s->loop_filter = 0;
s->h263_slice_structured= get_bits1(&s->gb);
if (get_bits1(&s->gb) != 0) {
/* MPPTYPE */
s->pict_type = get_bits(&s->gb, 3);
switch(s->pict_type){
- case 0: s->pict_type= FF_I_TYPE;break;
- case 1: s->pict_type= FF_P_TYPE;break;
- case 2: s->pict_type= FF_P_TYPE;s->pb_frame = 3;break;
- case 3: s->pict_type= FF_B_TYPE;break;
- case 7: s->pict_type= FF_I_TYPE;break; //ZYGO
+ case 0: s->pict_type= AV_PICTURE_TYPE_I;break;
+ case 1: s->pict_type= AV_PICTURE_TYPE_P;break;
+ case 2: s->pict_type= AV_PICTURE_TYPE_P;s->pb_frame = 3;break;
+ case 3: s->pict_type= AV_PICTURE_TYPE_B;break;
+ case 7: s->pict_type= AV_PICTURE_TYPE_I;break; //ZYGO
default:
return -1;
}
s->avctx->sample_aspect_ratio= ff_h263_pixel_aspect[s->aspect_ratio_info];
}
} else {
- width = h263_format[format][0];
- height = h263_format[format][1];
+ width = ff_h263_format[format][0];
+ height = ff_h263_format[format][1];
s->avctx->sample_aspect_ratio= (AVRational){12,11};
}
+ s->avctx->sample_aspect_ratio.den <<= s->ehc_mode;
if ((width == 0) || (height == 0))
return -1;
s->width = width;
if(s->custom_pcf){
int gcd;
- s->avctx->time_base.den= 1800000;
- s->avctx->time_base.num= 1000 + get_bits1(&s->gb);
- s->avctx->time_base.num*= get_bits(&s->gb, 7);
- if(s->avctx->time_base.num == 0){
+ s->avctx->framerate.num = 1800000;
+ s->avctx->framerate.den = 1000 + get_bits1(&s->gb);
+ s->avctx->framerate.den *= get_bits(&s->gb, 7);
+ if(s->avctx->framerate.den == 0){
av_log(s, AV_LOG_ERROR, "zero framerate\n");
return -1;
}
- gcd= av_gcd(s->avctx->time_base.den, s->avctx->time_base.num);
- s->avctx->time_base.den /= gcd;
- s->avctx->time_base.num /= gcd;
+ gcd= av_gcd(s->avctx->framerate.den, s->avctx->framerate.num);
+ s->avctx->framerate.den /= gcd;
+ s->avctx->framerate.num /= gcd;
}else{
- s->avctx->time_base= (AVRational){1001, 30000};
+ s->avctx->framerate = (AVRational){ 30000, 1001 };
}
}
s->qscale = get_bits(&s->gb, 5);
}
+ if (s->width == 0 || s->height == 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "dimensions 0\n");
+ return -1;
+ }
s->mb_width = (s->width + 15) / 16;
s->mb_height = (s->height + 15) / 16;
s->mb_num = s->mb_width * s->mb_height;
skip_bits(&s->gb, 2); /* Quantization information for B-pictures */
}
- /* PEI */
- while (get_bits1(&s->gb) != 0) {
- skip_bits(&s->gb, 8);
+ if (s->pict_type!=AV_PICTURE_TYPE_B) {
+ s->time = s->picture_number;
+ s->pp_time = s->time - s->last_non_b_time;
+ s->last_non_b_time = s->time;
+ }else{
+ s->time = s->picture_number;
+ s->pb_time = s->pp_time - (s->last_non_b_time - s->time);
+ if (s->pp_time <=s->pb_time ||
+ s->pp_time <= s->pp_time - s->pb_time ||
+ s->pp_time <= 0){
+ s->pp_time = 2;
+ s->pb_time = 1;
+ }
+ ff_mpeg4_init_direct_mv(s);
}
+ /* PEI */
+ if (skip_1stop_8data_bits(&s->gb) < 0)
+ return AVERROR_INVALIDDATA;
+
if(s->h263_slice_structured){
if (get_bits1(&s->gb) != 1) {
av_log(s->avctx, AV_LOG_ERROR, "SEPB1 marker missing\n");
}
ff_h263_show_pict_info(s);
- if (s->pict_type == FF_I_TYPE && s->codec_tag == AV_RL32("ZYGO")){
+ if (s->pict_type == AV_PICTURE_TYPE_I && s->codec_tag == AV_RL32("ZYGO") && get_bits_left(&s->gb) >= 85 + 13*3*16 + 50){
int i,j;
for(i=0; i<85; i++) av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&s->gb));
av_log(s->avctx, AV_LOG_DEBUG, "\n");