/*
- * ITU H263 bitstream decoder
+ * ITU H.263 bitstream decoder
* Copyright (c) 2000,2001 Fabrice Bellard
- * H263+ support.
+ * H.263+ support.
* Copyright (c) 2001 Juan J. Sierralta P
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
/**
* @file
- * h263 decoder.
+ * H.263 decoder.
*/
-//#define DEBUG
#include <limits.h>
+#include "libavutil/attributes.h"
+#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/mathematics.h"
-#include "dsputil.h"
#include "avcodec.h"
#include "mpegvideo.h"
#include "h263.h"
+#include "h263data.h"
+#include "internal.h"
#include "mathops.h"
-#include "unary.h"
+#include "mpegutils.h"
+#include "unary_legacy.h"
#include "flv.h"
+#include "rv10.h"
#include "mpeg4video.h"
-
-//#undef NDEBUG
-//#include <assert.h>
+#include "mpegvideodata.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
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 ff_h263_decode_init_vlc(void)
+av_cold void ff_h263_decode_init_vlc(void)
{
static int done = 0;
INIT_VLC_STATIC(&mv_vlc, MV_VLC_BITS, 33,
&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]);
+ ff_rl_init(&ff_h263_rl_inter, ff_h263_static_rl_table_store[0]);
+ ff_rl_init(&ff_rl_intra_aic, ff_h263_static_rl_table_store[1]);
INIT_VLC_RL(ff_h263_rl_inter, 554);
INIT_VLC_RL(ff_rl_intra_aic, 554);
INIT_VLC_STATIC(&h263_mbtype_b_vlc, H263_MBTYPE_B_VLC_BITS, 15,
{
int i, mb_pos;
- for(i=0; i<6; i++){
- if(s->mb_num-1 <= ff_mba_max[i]) break;
- }
- mb_pos= get_bits(&s->gb, ff_mba_length[i]);
- s->mb_x= mb_pos % s->mb_width;
- s->mb_y= mb_pos / s->mb_width;
+ for (i = 0; i < 6; i++)
+ if (s->mb_num - 1 <= ff_mba_max[i])
+ break;
+ mb_pos = get_bits(&s->gb, ff_mba_length[i]);
+ s->mb_x = mb_pos % s->mb_width;
+ s->mb_y = mb_pos / s->mb_width;
return mb_pos;
}
if(show_bits(&s->gb, 16)==0){
pos= get_bits_count(&s->gb);
if(CONFIG_MPEG4_DECODER && s->codec_id==AV_CODEC_ID_MPEG4)
- ret= ff_mpeg4_decode_video_packet_header(s);
+ ret= ff_mpeg4_decode_video_packet_header(s->avctx->priv_data);
else
ret= h263_decode_gob_header(s);
if(ret>=0)
pos= get_bits_count(&s->gb);
if(CONFIG_MPEG4_DECODER && s->codec_id==AV_CODEC_ID_MPEG4)
- ret= ff_mpeg4_decode_video_packet_header(s);
+ ret= ff_mpeg4_decode_video_packet_header(s->avctx->priv_data);
else
ret= h263_decode_gob_header(s);
if(ret>=0)
if (!s->h263_long_vectors) {
val = sign_extend(val, 5 + f_code);
} else {
- /* horrible h263 long vector mode */
+ /* horrible H.263 long vector mode */
if (pred < -31 && val < -63)
val += 64;
if (pred > 32 && val > 63)
code >>= 1;
code = (sign) ? (pred - code) : (pred + code);
- av_dlog(s->avctx,"H.263+ UMV Motion = %d\n", code);
+ ff_dlog(s->avctx,"H.263+ UMV Motion = %d\n", code);
return code;
}
do{
if (get_bits1(&s->gb)) {
/* skip mb */
- mot_val = s->current_picture.f.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.f.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.f.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.f.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= ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
if (s->umvplus)
mot_val[1 ]= mot_val[3 ]=
mot_val[1+stride]= mot_val[3+stride]= my;
} else {
- s->current_picture.f.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 = ff_h263_pred_motion(s, i, 0, &pred_x, &pred_y);
if (s->umvplus)
}
} else if (s->mb_intra) {
/* DC coef */
- if(s->codec_id == AV_CODEC_ID_RV10){
-#if CONFIG_RV10_DECODER
+ 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);
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->err_recognition & AV_EF_BITSTREAM)
+ if (s->avctx->err_recognition & AV_EF_BITSTREAM)
return -1;
}
if (level == 255)
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);
s->block_last_index[i] = -1;
s->mv_dir = MV_DIR_FORWARD;
s->mv_type = MV_TYPE_16X16;
- s->current_picture.f.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.f.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;
ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
if (s->umvplus && (mx - pred_x) == 1 && (my - pred_y) == 1)
skip_bits1(&s->gb); /* Bit stuffing to prevent PSC */
} else {
- s->current_picture.f.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 = ff_h263_pred_motion(s, i, 0, &pred_x, &pred_y);
} 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.f.motion_val[0][2 * (s->mb_x + s->mb_y * stride)];
- int16_t *mot_val1 = s->current_picture.f.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);
}
if(IS_DIRECT(mb_type)){
+ if (!s->pp_time)
+ return AVERROR_INVALIDDATA;
s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
mb_type |= ff_mpeg4_set_direct_mv(s, 0, 0);
}else{
}
}
- s->current_picture.f.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.f.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.f.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);
}
return SLICE_OK;
}
-/* most is hardcoded. should extend to handle all h263 streams */
+/* Most is hardcoded; should extend to handle all H.263 streams. */
int ff_h263_decode_picture_header(MpegEncContext *s)
{
- int format, width, height, i;
+ int format, width, height, i, ret;
uint32_t startcode;
align_get_bits(&s->gb);
i = get_bits(&s->gb, 8); /* picture timestamp */
if( (s->picture_number&~0xFF)+i < s->picture_number)
i+= 256;
- s->current_picture_ptr->f.pts =
s->picture_number= (s->picture_number&~0xFF) + i;
/* PTYPE starts here */
return -1;
}
if (get_bits1(&s->gb) != 0) {
- av_log(s->avctx, AV_LOG_ERROR, "Bad H263 id\n");
- return -1; /* h263 id */
+ av_log(s->avctx, AV_LOG_ERROR, "Bad H.263 id\n");
+ return -1; /* H.263 id */
}
skip_bits1(&s->gb); /* split screen off */
skip_bits1(&s->gb); /* camera off */
/* H.263v1 */
width = ff_h263_format[format][0];
height = ff_h263_format[format][1];
- if (!width)
- return -1;
s->pict_type = AV_PICTURE_TYPE_I + get_bits1(&s->gb);
s->h263_long_vectors = get_bits1(&s->gb);
if (get_bits1(&s->gb) != 0) {
- av_log(s->avctx, AV_LOG_ERROR, "H263 SAC not supported\n");
+ av_log(s->avctx, AV_LOG_ERROR, "H.263 SAC not supported\n");
return -1; /* SAC: off */
}
s->obmc= get_bits1(&s->gb); /* Advanced prediction mode */
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;
if (ufep == 1) {
/* OPPTYPE */
format = get_bits(&s->gb, 3);
- av_dlog(s->avctx, "ufep=1, format: %d\n", format);
+ ff_dlog(s->avctx, "ufep=1, format: %d\n", format);
s->custom_pcf= get_bits1(&s->gb);
s->umvplus = get_bits1(&s->gb); /* Unrestricted Motion Vector */
if (get_bits1(&s->gb) != 0) {
if (format == 6) {
/* Custom Picture Format (CPFMT) */
s->aspect_ratio_info = get_bits(&s->gb, 4);
- av_dlog(s->avctx, "aspect: %d\n", s->aspect_ratio_info);
+ ff_dlog(s->avctx, "aspect: %d\n", s->aspect_ratio_info);
/* aspect ratios:
0 - forbidden
1 - 1:1
width = (get_bits(&s->gb, 9) + 1) * 4;
skip_bits1(&s->gb);
height = get_bits(&s->gb, 9) * 4;
- av_dlog(s->avctx, "\nH.263+ Custom picture: %dx%d\n",width,height);
+ ff_dlog(s->avctx, "\nH.263+ Custom picture: %dx%d\n",width,height);
if (s->aspect_ratio_info == FF_ASPECT_EXTENDED) {
- /* aspected dimensions */
+ /* expected dimensions */
s->avctx->sample_aspect_ratio.num= get_bits(&s->gb, 8);
s->avctx->sample_aspect_ratio.den= get_bits(&s->gb, 8);
}else{
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 ((ret = av_image_check_size(s->width, s->height, 0, s)) < 0)
+ return ret;
+
s->mb_width = (s->width + 15) / 16;
s->mb_height = (s->height + 15) / 16;
s->mb_num = s->mb_width * s->mb_height;
projects / ffmpeg / blobdiff