/*
* VC-1 and WMV3 decoder
- * Copyright (c) 2006 Konstantin Shishkov
+ * Copyright (c) 2006-2007 Konstantin Shishkov
* Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#define AC_VLC_BITS 9
static const uint16_t table_mb_intra[64][2];
+/** Markers used if VC-1 AP frame data */
+//@{
+enum VC1Code{
+ VC1_CODE_RES0 = 0x00000100,
+ VC1_CODE_ENDOFSEQ = 0x0000010A,
+ VC1_CODE_SLICE,
+ VC1_CODE_FIELD,
+ VC1_CODE_FRAME,
+ VC1_CODE_ENTRYPOINT,
+ VC1_CODE_SEQHDR,
+};
+//@}
/** Available Profiles */
//@{
}
uvmx = (mx + ((mx & 3) == 3)) >> 1;
uvmy = (my + ((my & 3) == 3)) >> 1;
+ if(v->fastuvmc) {
+ uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
+ uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
+ }
if(!dir) {
srcY = s->last_picture.data[0];
srcU = s->last_picture.data[1];
uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
- src_x = clip( src_x, -16, s->mb_width * 16);
- src_y = clip( src_y, -16, s->mb_height * 16);
- uvsrc_x = clip(uvsrc_x, -8, s->mb_width * 8);
- uvsrc_y = clip(uvsrc_y, -8, s->mb_height * 8);
+ if(v->profile != PROFILE_ADVANCED){
+ src_x = av_clip( src_x, -16, s->mb_width * 16);
+ src_y = av_clip( src_y, -16, s->mb_height * 16);
+ uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
+ uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
+ }else{
+ src_x = av_clip( src_x, -17, s->avctx->coded_width);
+ src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
+ uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
+ uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
+ }
srcY += src_y * s->linesize + src_x;
srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
srcY += s->mspel * (1 + s->linesize);
}
- if(v->fastuvmc) {
- uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
- uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
- }
-
if(s->mspel) {
dxy = ((my & 3) << 2) | (mx & 3);
dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd);
src_x = s->mb_x * 16 + (n&1) * 8 + (mx >> 2);
src_y = s->mb_y * 16 + (n&2) * 4 + (my >> 2);
- src_x = clip( src_x, -16, s->mb_width * 16);
- src_y = clip( src_y, -16, s->mb_height * 16);
+ if(v->profile != PROFILE_ADVANCED){
+ src_x = av_clip( src_x, -16, s->mb_width * 16);
+ src_y = av_clip( src_y, -16, s->mb_height * 16);
+ }else{
+ src_x = av_clip( src_x, -17, s->avctx->coded_width);
+ src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
+ }
srcY += src_y * s->linesize + src_x;
for(i= t1+1; i<4; i++)if(!intra[i]) {t2 = i; break;}
tx = (mvx[t1] + mvx[t2]) / 2;
ty = (mvy[t1] + mvy[t2]) / 2;
- } else
+ } else {
+ s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
+ s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
return; //no need to do MC for inter blocks
+ }
s->current_picture.motion_val[1][s->block_index[0]][0] = tx;
s->current_picture.motion_val[1][s->block_index[0]][1] = ty;
uvmx = (tx + ((tx&3) == 3)) >> 1;
uvmy = (ty + ((ty&3) == 3)) >> 1;
+ if(v->fastuvmc) {
+ uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
+ uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
+ }
uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
- uvsrc_x = clip(uvsrc_x, -8, s->mb_width * 8);
- uvsrc_y = clip(uvsrc_y, -8, s->mb_height * 8);
+ if(v->profile != PROFILE_ADVANCED){
+ uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
+ uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
+ }else{
+ uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
+ uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
+ }
+
srcU = s->last_picture.data[1] + uvsrc_y * s->uvlinesize + uvsrc_x;
srcV = s->last_picture.data[2] + uvsrc_y * s->uvlinesize + uvsrc_x;
if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
}
}
- if(v->fastuvmc) {
- uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
- uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
- }
-
/* Chroma MC always uses qpel bilinear */
uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
uvmx = (uvmx&3)<<1;
av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits(gb, 32));
v->profile = get_bits(gb, 2);
- if (v->profile == 2)
+ if (v->profile == PROFILE_COMPLEX)
{
- av_log(avctx, AV_LOG_ERROR, "Profile value 2 is forbidden (and WMV3 Complex Profile is unsupported)\n");
- return -1;
+ av_log(avctx, AV_LOG_ERROR, "WMV3 Complex Profile is not fully supported\n");
}
if (v->profile == PROFILE_ADVANCED)
"Old WMV3 version detected, only I-frames will be decoded\n");
//return -1;
}
+ //TODO: figure out what they mean (always 0x402F)
+ if(!v->res_fasttx) skip_bits(gb, 16);
av_log(avctx, AV_LOG_DEBUG,
"Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
"LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
v->s.avctx->coded_width = (get_bits(gb, 12) + 1) << 1;
v->s.avctx->coded_height = (get_bits(gb, 12) + 1) << 1;
+ v->s.avctx->width = v->s.avctx->coded_width;
+ v->s.avctx->height = v->s.avctx->coded_height;
v->broadcast = get_bits1(gb);
v->interlace = get_bits1(gb);
v->tfcntrflag = get_bits1(gb);
v->finterpflag = get_bits1(gb);
get_bits1(gb); // reserved
+
+ v->s.h_edge_pos = v->s.avctx->coded_width;
+ v->s.v_edge_pos = v->s.avctx->coded_height;
+
+ av_log(v->s.avctx, AV_LOG_DEBUG,
+ "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
+ "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
+ "TFCTRflag=%i, FINTERPflag=%i\n",
+ v->level, v->frmrtq_postproc, v->bitrtq_postproc,
+ v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
+ v->tfcntrflag, v->finterpflag
+ );
+
v->psf = get_bits1(gb);
if(v->psf) { //PsF, 6.1.13
av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
return -1;
}
+ v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
if(get_bits1(gb)) { //Display Info - decoding is not affected by it
int w, h, ar = 0;
- av_log(v->s.avctx, AV_LOG_INFO, "Display extended info:\n");
- w = get_bits(gb, 14);
- h = get_bits(gb, 14);
- av_log(v->s.avctx, AV_LOG_INFO, "Display dimensions: %ix%i\n", w, h);
- //TODO: store aspect ratio in AVCodecContext
+ av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
+ v->s.avctx->width = v->s.width = w = get_bits(gb, 14) + 1;
+ v->s.avctx->height = v->s.height = h = get_bits(gb, 14) + 1;
+ av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
if(get_bits1(gb))
ar = get_bits(gb, 4);
- if(ar == 15) {
+ if(ar && ar < 14){
+ v->s.avctx->sample_aspect_ratio = vc1_pixel_aspect[ar];
+ }else if(ar == 15){
w = get_bits(gb, 8);
h = get_bits(gb, 8);
+ v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
}
if(get_bits1(gb)){ //framerate stuff
if(get_bits1(gb)) {
- get_bits(gb, 16);
+ v->s.avctx->time_base.num = 32;
+ v->s.avctx->time_base.den = get_bits(gb, 16) + 1;
} else {
- get_bits(gb, 8);
- get_bits(gb, 4);
+ int nr, dr;
+ nr = get_bits(gb, 8);
+ dr = get_bits(gb, 4);
+ if(nr && nr < 8 && dr && dr < 3){
+ v->s.avctx->time_base.num = fps_dr[dr - 1];
+ v->s.avctx->time_base.den = fps_nr[nr - 1] * 1000;
+ }
}
}
static int decode_entry_point(AVCodecContext *avctx, GetBitContext *gb)
{
VC1Context *v = avctx->priv_data;
- int i;
+ int i, blink, clentry, refdist;
av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
- get_bits1(gb); // broken link
- avctx->max_b_frames = 1 - get_bits1(gb); // 'closed entry' also signalize possible B-frames
+ blink = get_bits1(gb); // broken link
+ clentry = get_bits1(gb); // closed entry
v->panscanflag = get_bits1(gb);
- get_bits1(gb); // refdist flag
+ refdist = get_bits1(gb); // refdist flag
v->s.loop_filter = get_bits1(gb);
v->fastuvmc = get_bits1(gb);
v->extended_mv = get_bits1(gb);
skip_bits(gb, 3); // UV range, ignored for now
}
+ av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
+ "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
+ "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
+ "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
+ blink, clentry, v->panscanflag, refdist, v->s.loop_filter,
+ v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
+
return 0;
}
else
if (v->multires && v->s.pict_type != B_TYPE) v->respic = get_bits(gb, 2);
+ if(v->res_x8 && (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)){
+ if(get_bits1(gb))return -1;
+ }
//av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
// (v->s.pict_type == P_TYPE) ? 'P' : ((v->s.pict_type == I_TYPE) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm);
shift = v->lumshift << 6;
}
for(i = 0; i < 256; i++) {
- v->luty[i] = clip_uint8((scale * i + shift + 32) >> 6);
- v->lutuv[i] = clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
+ v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
+ v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
}
}
if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
static int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
{
- int fcm;
int pqindex, lowquant;
int status;
v->p_frame_skipped = 0;
- if(v->interlace)
- fcm = decode012(gb);
+ if(v->interlace){
+ v->fcm = decode012(gb);
+ if(v->fcm) return -1; // interlaced frames/fields are not implemented
+ }
switch(get_prefix(gb, 0, 4)) {
case 0:
v->s.pict_type = P_TYPE;
break;
case 1:
v->s.pict_type = B_TYPE;
- return -1;
-// break;
+ break;
case 2:
v->s.pict_type = I_TYPE;
break;
if(v->tfcntrflag)
get_bits(gb, 8);
if(v->broadcast) {
- if(!v->interlace || v->panscanflag) {
- get_bits(gb, 2);
+ if(!v->interlace || v->psf) {
+ v->rptfrm = get_bits(gb, 2);
} else {
- get_bits1(gb);
- get_bits1(gb);
+ v->tff = get_bits1(gb);
+ v->rptfrm = get_bits1(gb);
}
}
if(v->panscanflag) {
if(v->interlace)
v->uvsamp = get_bits1(gb);
if(v->finterpflag) v->interpfrm = get_bits(gb, 1);
+ if(v->s.pict_type == B_TYPE) {
+ v->bfraction = get_vlc2(gb, vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
+ v->bfraction = vc1_bfraction_lut[v->bfraction];
+ if(v->bfraction == 0) {
+ v->s.pict_type = BI_TYPE; /* XXX: should not happen here */
+ }
+ }
pqindex = get_bits(gb, 5);
v->pqindex = pqindex;
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
v->pquantizer = get_bits(gb, 1);
+ if(v->s.pict_type == I_TYPE || v->s.pict_type == P_TYPE) v->use_ic = 0;
+
switch(v->s.pict_type) {
case I_TYPE:
case BI_TYPE:
shift = v->lumshift << 6;
}
for(i = 0; i < 256; i++) {
- v->luty[i] = clip_uint8((scale * i + shift + 32) >> 6);
- v->lutuv[i] = clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
+ v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
+ v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
}
+ v->use_ic = 1;
}
if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
v->s.quarter_sample = 0;
v->ttfrm = TT_8X8;
}
break;
+ case B_TYPE:
+ if(v->postprocflag)
+ v->postproc = get_bits1(gb);
+ if (v->extended_mv) v->mvrange = get_prefix(gb, 0, 3);
+ else v->mvrange = 0;
+ v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
+ v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
+ v->range_x = 1 << (v->k_x - 1);
+ v->range_y = 1 << (v->k_y - 1);
+
+ if (v->pq < 5) v->tt_index = 0;
+ else if(v->pq < 13) v->tt_index = 1;
+ else v->tt_index = 2;
+
+ lowquant = (v->pq > 12) ? 0 : 1;
+ v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
+ v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
+ v->s.mspel = v->s.quarter_sample;
+
+ status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
+ if (status < 0) return -1;
+ av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
+ "Imode: %i, Invert: %i\n", status>>1, status&1);
+ status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
+ if (status < 0) return -1;
+ av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
+ "Imode: %i, Invert: %i\n", status>>1, status&1);
+
+ v->s.mv_table_index = get_bits(gb, 2);
+ v->cbpcy_vlc = &vc1_cbpcy_p_vlc[get_bits(gb, 2)];
+
+ if (v->dquant)
+ {
+ av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
+ vop_dquant_decoding(v);
+ }
+
+ v->ttfrm = 0;
+ if (v->vstransform)
+ {
+ v->ttmbf = get_bits(gb, 1);
+ if (v->ttmbf)
+ {
+ v->ttfrm = ttfrm_to_tt[get_bits(gb, 2)];
+ }
+ } else {
+ v->ttmbf = 1;
+ v->ttfrm = TT_8X8;
+ }
+ break;
}
/* AC Syntax */
}
/* DC Syntax */
v->s.dc_table_index = get_bits(gb, 1);
- if (v->s.pict_type == I_TYPE && v->dquant) {
+ if ((v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE) && v->dquant) {
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
vop_dquant_decoding(v);
}
if(s->mb_intra){
s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0;
s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0;
+ s->current_picture.motion_val[1][xy][0] = 0;
+ s->current_picture.motion_val[1][xy][1] = 0;
if(mv1) { /* duplicate motion data for 1-MV block */
s->current_picture.motion_val[0][xy + 1][0] = 0;
s->current_picture.motion_val[0][xy + 1][1] = 0;
s->current_picture.motion_val[0][xy + wrap][1] = 0;
s->current_picture.motion_val[0][xy + wrap + 1][0] = 0;
s->current_picture.motion_val[0][xy + wrap + 1][1] = 0;
+ s->current_picture.motion_val[1][xy + 1][0] = 0;
+ s->current_picture.motion_val[1][xy + 1][1] = 0;
+ s->current_picture.motion_val[1][xy + wrap][0] = 0;
+ s->current_picture.motion_val[1][xy + wrap][1] = 0;
+ s->current_picture.motion_val[1][xy + wrap + 1][0] = 0;
+ s->current_picture.motion_val[1][xy + wrap + 1][1] = 0;
}
return;
}
/* Calculate hybrid prediction as specified in 8.3.5.3.5 */
if((!s->first_slice_line || (n==2 || n==3)) && (s->mb_x || (n==1 || n==3))) {
if(is_intra[xy - wrap])
- sum = ABS(px) + ABS(py);
+ sum = FFABS(px) + FFABS(py);
else
- sum = ABS(px - A[0]) + ABS(py - A[1]);
+ sum = FFABS(px - A[0]) + FFABS(py - A[1]);
if(sum > 32) {
if(get_bits1(&s->gb)) {
px = A[0];
}
} else {
if(is_intra[xy - 1])
- sum = ABS(px) + ABS(py);
+ sum = FFABS(px) + FFABS(py);
else
- sum = ABS(px - C[0]) + ABS(py - C[1]);
+ sum = FFABS(px - C[0]) + FFABS(py - C[1]);
if(sum > 32) {
if(get_bits1(&s->gb)) {
px = A[0];
my = s->mv[1][0][1];
uvmx = (mx + ((mx & 3) == 3)) >> 1;
uvmy = (my + ((my & 3) == 3)) >> 1;
+ if(v->fastuvmc) {
+ uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
+ uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
+ }
srcY = s->next_picture.data[0];
srcU = s->next_picture.data[1];
srcV = s->next_picture.data[2];
uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
- src_x = clip( src_x, -16, s->mb_width * 16);
- src_y = clip( src_y, -16, s->mb_height * 16);
- uvsrc_x = clip(uvsrc_x, -8, s->mb_width * 8);
- uvsrc_y = clip(uvsrc_y, -8, s->mb_height * 8);
+ if(v->profile != PROFILE_ADVANCED){
+ src_x = av_clip( src_x, -16, s->mb_width * 16);
+ src_y = av_clip( src_y, -16, s->mb_height * 16);
+ uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
+ uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
+ }else{
+ src_x = av_clip( src_x, -17, s->avctx->coded_width);
+ src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
+ uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
+ uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
+ }
srcY += src_y * s->linesize + src_x;
srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
srcY += s->mspel * (1 + s->linesize);
}
- if(v->fastuvmc) {
- uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
- uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
- }
-
mx >>= 1;
my >>= 1;
dxy = ((my & 1) << 1) | (mx & 1);
dsp->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
}
-static always_inline int scale_mv(int value, int bfrac, int inv, int qs)
+static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
{
int n = bfrac;
*/
static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode)
{
- int t;
-
if(v->use_ic) {
v->mv_mode2 = v->mv_mode;
v->mv_mode = MV_PMODE_INTENSITY_COMP;
off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
B = s->current_picture.motion_val[0][xy - wrap*2 + off];
+ if(!s->mb_x) C[0] = C[1] = 0;
if(!s->first_slice_line) { // predictor A is not out of bounds
if(s->mb_width == 1) {
px = A[0];
/* Calculate hybrid prediction as specified in 8.3.5.3.5 */
if(0 && !s->first_slice_line && s->mb_x) {
if(is_intra[xy - wrap])
- sum = ABS(px) + ABS(py);
+ sum = FFABS(px) + FFABS(py);
else
- sum = ABS(px - A[0]) + ABS(py - A[1]);
+ sum = FFABS(px - A[0]) + FFABS(py - A[1]);
if(sum > 32) {
if(get_bits1(&s->gb)) {
px = A[0];
}
} else {
if(is_intra[xy - 2])
- sum = ABS(px) + ABS(py);
+ sum = FFABS(px) + FFABS(py);
else
- sum = ABS(px - C[0]) + ABS(py - C[1]);
+ sum = FFABS(px - C[0]) + FFABS(py - C[1]);
if(sum > 32) {
if(get_bits1(&s->gb)) {
px = A[0];
off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
B = s->current_picture.motion_val[1][xy - wrap*2 + off];
+ if(!s->mb_x) C[0] = C[1] = 0;
if(!s->first_slice_line) { // predictor A is not out of bounds
if(s->mb_width == 1) {
px = A[0];
/* Calculate hybrid prediction as specified in 8.3.5.3.5 */
if(0 && !s->first_slice_line && s->mb_x) {
if(is_intra[xy - wrap])
- sum = ABS(px) + ABS(py);
+ sum = FFABS(px) + FFABS(py);
else
- sum = ABS(px - A[0]) + ABS(py - A[1]);
+ sum = FFABS(px - A[0]) + FFABS(py - A[1]);
if(sum > 32) {
if(get_bits1(&s->gb)) {
px = A[0];
}
} else {
if(is_intra[xy - 2])
- sum = ABS(px) + ABS(py);
+ sum = FFABS(px) + FFABS(py);
else
- sum = ABS(px - C[0]) + ABS(py - C[1]);
+ sum = FFABS(px - C[0]) + FFABS(py - C[1]);
if(sum > 32) {
if(get_bits1(&s->gb)) {
px = A[0];
ac_val -= 16 * s->block_wrap[n];
q1 = s->current_picture.qscale_table[mb_pos];
- if(dc_pred_dir && c_avail) q2 = s->current_picture.qscale_table[mb_pos - 1];
- if(!dc_pred_dir && a_avail) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
- if(n && n<4) q2 = q1;
+ if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
+ if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
+ if(dc_pred_dir && n==1) q2 = q1;
+ if(!dc_pred_dir && n==2) q2 = q1;
+ if(n==3) q2 = q1;
if(coded) {
int last = 0, skip, value;
if(use_pred) {
/* scale predictors if needed*/
if(q2 && q1!=q2) {
- q1 = q1 * 2 - 1;
- q2 = q2 * 2 - 1;
+ q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+ q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
if(dc_pred_dir) { //left
for(k = 1; k < 8; k++)
if(use_pred) {
memcpy(ac_val2, ac_val, 8 * 2);
if(q2 && q1!=q2) {
- q1 = q1 * 2 - 1;
- q2 = q2 * 2 - 1;
+ q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+ q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
for(k = 1; k < 8; k++)
ac_val2[k] = (ac_val2[k] * q2 * vc1_dqscale[q1 - 1] + 0x20000) >> 18;
}
if(use_pred) {
memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
if(q2 && q1!=q2) {
- q1 = q1 * 2 - 1;
- q2 = q2 * 2 - 1;
+ q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+ q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
for(k = 1; k < 8; k++)
ac_val2[k + 8] = (ac_val2[k + 8] * q2 * vc1_dqscale[q1 - 1] + 0x20000) >> 18;
}
ac_val -= 16 * s->block_wrap[n];
q1 = s->current_picture.qscale_table[mb_pos];
- if(dc_pred_dir && c_avail) q2 = s->current_picture.qscale_table[mb_pos - 1];
- if(!dc_pred_dir && a_avail) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
- if(n && n<4) q2 = q1;
+ if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
+ if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
+ if(dc_pred_dir && n==1) q2 = q1;
+ if(!dc_pred_dir && n==2) q2 = q1;
+ if(n==3) q2 = q1;
if(coded) {
int last = 0, skip, value;
if(use_pred) {
/* scale predictors if needed*/
if(q2 && q1!=q2) {
- q1 = q1 * 2 - 1;
- q2 = q2 * 2 - 1;
+ q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+ q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
if(dc_pred_dir) { //left
for(k = 1; k < 8; k++)
if(use_pred) {
memcpy(ac_val2, ac_val, 8 * 2);
if(q2 && q1!=q2) {
- q1 = q1 * 2 - 1;
- q2 = q2 * 2 - 1;
+ q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+ q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
for(k = 1; k < 8; k++)
ac_val2[k] = (ac_val2[k] * q2 * vc1_dqscale[q1 - 1] + 0x20000) >> 18;
}
if(use_pred) {
memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
if(q2 && q1!=q2) {
- q1 = q1 * 2 - 1;
- q2 = q2 * 2 - 1;
+ q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+ q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
for(k = 1; k < 8; k++)
ac_val2[k + 8] = (ac_val2[k + 8] * q2 * vc1_dqscale[q1 - 1] + 0x20000) >> 18;
}
s->dsp.vc1_inv_trans_8x8(s->block[i]);
if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
for(j = 0; j < 64; j++) s->block[i][j] += 128;
+ if(!v->res_fasttx && v->res_x8) for(j = 0; j < 64; j++) s->block[i][j] += 16;
s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
if(v->pq >= 9 && v->overlap) {
- if(v->a_avail)
- s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2), (i<4) ? ((i&1)>>1) : (s->mb_y&1));
if(v->c_avail)
- s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2), (i<4) ? (i&1) : (s->mb_x&1));
+ s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
+ if(v->a_avail)
+ s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
}
} else if(val) {
vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
s->dsp.vc1_inv_trans_8x8(s->block[i]);
if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
for(j = 0; j < 64; j++) s->block[i][j] += 128;
+ if(!v->res_fasttx && v->res_x8) for(j = 0; j < 64; j++) s->block[i][j] += 16;
s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
if(v->pq >= 9 && v->overlap) {
- if(v->a_avail)
- s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2), (i<4) ? ((i&1)>>1) : (s->mb_y&1));
if(v->c_avail)
- s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2), (i<4) ? (i&1) : (s->mb_x&1));
+ s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
+ if(v->a_avail)
+ s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
}
} else if(is_coded[i]) {
status = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2);
s->dsp.vc1_inv_trans_8x8(s->block[k]);
+ if(!v->res_fasttx && !v->res_x8) for(j = 0; j < 64; j++) s->block[k][j] -= 16;
if(v->pq >= 9 && v->overlap) {
for(j = 0; j < 64; j++) s->block[k][j] += 128;
}
vc1_put_block(v, s->block);
if(v->pq >= 9 && v->overlap) {
- if(!s->first_slice_line) {
- s->dsp.vc1_v_overlap(s->dest[0], s->linesize, 0);
- s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize, 0);
+ if(s->mb_x) {
+ s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
+ s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
if(!(s->flags & CODEC_FLAG_GRAY)) {
- s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize, s->mb_y&1);
- s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize, s->mb_y&1);
+ s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
+ s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
}
}
- s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize, 1);
- s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize, 1);
- if(s->mb_x) {
- s->dsp.vc1_h_overlap(s->dest[0], s->linesize, 0);
- s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize, 0);
+ s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
+ s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
+ if(!s->first_slice_line) {
+ s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
+ s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
if(!(s->flags & CODEC_FLAG_GRAY)) {
- s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize, s->mb_x&1);
- s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize, s->mb_x&1);
+ s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
+ s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
}
}
- s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize, 1);
- s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize, 1);
+ s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
+ s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
}
if(get_bits_count(&s->gb) > v->bits) {
break;
}
- /* Set DC scale - y and c use the same */
- s->y_dc_scale = s->y_dc_scale_table[v->pq];
- s->c_dc_scale = s->c_dc_scale_table[v->pq];
-
//do frame decode
s->mb_x = s->mb_y = 0;
s->mb_intra = 1;
GET_MQUANT();
s->current_picture.qscale_table[mb_pos] = mquant;
+ /* Set DC scale - y and c use the same */
+ s->y_dc_scale = s->y_dc_scale_table[mquant];
+ s->c_dc_scale = s->c_dc_scale_table[mquant];
for(k = 0; k < 6; k++) {
val = ((cbp >> (5 - k)) & 1);
vc1_put_block(v, s->block);
if(overlap) {
- if(!s->first_slice_line) {
- s->dsp.vc1_v_overlap(s->dest[0], s->linesize, 0);
- s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize, 0);
+ if(s->mb_x) {
+ s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
+ s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
if(!(s->flags & CODEC_FLAG_GRAY)) {
- s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize, s->mb_y&1);
- s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize, s->mb_y&1);
+ s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
+ s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
}
}
- s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize, 1);
- s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize, 1);
- if(s->mb_x) {
- s->dsp.vc1_h_overlap(s->dest[0], s->linesize, 0);
- s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize, 0);
+ s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
+ s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
+ if(!s->first_slice_line) {
+ s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
+ s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
if(!(s->flags & CODEC_FLAG_GRAY)) {
- s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize, s->mb_x&1);
- s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize, s->mb_x&1);
+ s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
+ s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
}
}
- s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize, 1);
- s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize, 1);
+ s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
+ s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
}
if(get_bits_count(&s->gb) > v->bits) {
vc1_decode_p_blocks(v);
break;
case B_TYPE:
- if(v->bi_type)
- vc1_decode_i_blocks(v);
- else
+ if(v->bi_type){
+ if(v->profile == PROFILE_ADVANCED)
+ vc1_decode_i_blocks_adv(v);
+ else
+ vc1_decode_i_blocks(v);
+ }else
vc1_decode_b_blocks(v);
break;
}
}
+#define IS_MARKER(x) (((x) & ~0xFF) == VC1_CODE_RES0)
+
+/** Find VC-1 marker in buffer
+ * @return position where next marker starts or end of buffer if no marker found
+ */
+static av_always_inline uint8_t* find_next_marker(uint8_t *src, uint8_t *end)
+{
+ uint32_t mrk = 0xFFFFFFFF;
+
+ if(end-src < 4) return end;
+ while(src < end){
+ mrk = (mrk << 8) | *src++;
+ if(IS_MARKER(mrk))
+ return src-4;
+ }
+ return end;
+}
+
+static av_always_inline int vc1_unescape_buffer(uint8_t *src, int size, uint8_t *dst)
+{
+ int dsize = 0, i;
+
+ if(size < 4){
+ for(dsize = 0; dsize < size; dsize++) *dst++ = *src++;
+ return size;
+ }
+ for(i = 0; i < size; i++, src++) {
+ if(src[0] == 3 && i >= 2 && !src[-1] && !src[-2] && i < size-1 && src[1] < 4) {
+ dst[dsize++] = src[1];
+ src++;
+ i++;
+ } else
+ dst[dsize++] = *src;
+ }
+ return dsize;
+}
/** Initialize a VC1/WMV3 decoder
* @todo TODO: Handle VC-1 IDUs (Transport level?)
av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
}
} else { // VC1/WVC1
- int edata_size = avctx->extradata_size;
- uint8_t *edata = avctx->extradata;
+ uint8_t *start = avctx->extradata, *end = avctx->extradata + avctx->extradata_size;
+ uint8_t *next; int size, buf2_size;
+ uint8_t *buf2 = NULL;
+ int seq_inited = 0, ep_inited = 0;
if(avctx->extradata_size < 16) {
- av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", edata_size);
+ av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
return -1;
}
- while(edata_size > 8) {
- // test if we've found header
- if(BE_32(edata) == 0x0000010F) {
- edata += 4;
- edata_size -= 4;
- break;
- }
- edata_size--;
- edata++;
- }
-
- init_get_bits(&gb, edata, edata_size*8);
-
- if (decode_sequence_header(avctx, &gb) < 0)
- return -1;
- while(edata_size > 8) {
- // test if we've found entry point
- if(BE_32(edata) == 0x0000010E) {
- edata += 4;
- edata_size -= 4;
+ buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if(start[0]) start++; // in WVC1 extradata first byte is its size
+ next = start;
+ for(; next < end; start = next){
+ next = find_next_marker(start + 4, end);
+ size = next - start - 4;
+ if(size <= 0) continue;
+ buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
+ init_get_bits(&gb, buf2, buf2_size * 8);
+ switch(AV_RB32(start)){
+ case VC1_CODE_SEQHDR:
+ if(decode_sequence_header(avctx, &gb) < 0){
+ av_free(buf2);
+ return -1;
+ }
+ seq_inited = 1;
+ break;
+ case VC1_CODE_ENTRYPOINT:
+ if(decode_entry_point(avctx, &gb) < 0){
+ av_free(buf2);
+ return -1;
+ }
+ ep_inited = 1;
break;
}
- edata_size--;
- edata++;
}
-
- init_get_bits(&gb, edata, edata_size*8);
-
- if (decode_entry_point(avctx, &gb) < 0)
- return -1;
+ av_free(buf2);
+ if(!seq_inited || !ep_inited){
+ av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
+ return -1;
+ }
}
avctx->has_b_frames= !!(avctx->max_b_frames);
s->low_delay = !avctx->has_b_frames;
s->current_picture_ptr= &s->picture[i];
}
- //for advanced profile we need to unescape buffer
+ //for advanced profile we may need to parse and unescape data
if (avctx->codec_id == CODEC_ID_VC1) {
- int i, buf_size2;
- buf2 = av_malloc(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
- buf_size2 = 0;
- for(i = 0; i < buf_size; i++) {
- if(buf[i] == 3 && i >= 2 && !buf[i-1] && !buf[i-2] && i < buf_size-1 && buf[i+1] < 4) {
- buf2[buf_size2++] = buf[i+1];
- i++;
- } else
- buf2[buf_size2++] = buf[i];
+ int buf_size2 = 0;
+ buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
+
+ if(IS_MARKER(AV_RB32(buf))){ /* frame starts with marker and needs to be parsed */
+ uint8_t *dst = buf2, *start, *end, *next;
+ int size;
+
+ next = buf;
+ for(start = buf, end = buf + buf_size; next < end; start = next){
+ next = find_next_marker(start + 4, end);
+ size = next - start - 4;
+ if(size <= 0) continue;
+ switch(AV_RB32(start)){
+ case VC1_CODE_FRAME:
+ buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
+ break;
+ case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
+ buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
+ init_get_bits(&s->gb, buf2, buf_size2*8);
+ decode_entry_point(avctx, &s->gb);
+ break;
+ case VC1_CODE_SLICE:
+ av_log(avctx, AV_LOG_ERROR, "Sliced decoding is not implemented (yet)\n");
+ av_free(buf2);
+ return -1;
+ }
+ }
+ }else if(v->interlace && ((buf[0] & 0xC0) == 0xC0)){ /* WVC1 interlaced stores both fields divided by marker */
+ uint8_t *divider;
+
+ divider = find_next_marker(buf, buf + buf_size);
+ if((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD){
+ av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
+ return -1;
+ }
+
+ buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
+ // TODO
+ av_free(buf2);return -1;
+ }else{
+ buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
}
init_get_bits(&s->gb, buf2, buf_size2*8);
} else
CODEC_CAP_DELAY,
NULL
};
+
+#ifdef CONFIG_VC1_PARSER
+/**
+ * finds the end of the current frame in the bitstream.
+ * @return the position of the first byte of the next frame, or -1
+ */
+static int vc1_find_frame_end(ParseContext *pc, const uint8_t *buf,
+ int buf_size) {
+ int pic_found, i;
+ uint32_t state;
+
+ pic_found= pc->frame_start_found;
+ state= pc->state;
+
+ i=0;
+ if(!pic_found){
+ for(i=0; i<buf_size; i++){
+ state= (state<<8) | buf[i];
+ if(state == VC1_CODE_FRAME || state == VC1_CODE_FIELD){
+ i++;
+ pic_found=1;
+ break;
+ }
+ }
+ }
+
+ if(pic_found){
+ /* EOF considered as end of frame */
+ if (buf_size == 0)
+ return 0;
+ for(; i<buf_size; i++){
+ state= (state<<8) | buf[i];
+ if(IS_MARKER(state) && state != VC1_CODE_FIELD && state != VC1_CODE_SLICE){
+ pc->frame_start_found=0;
+ pc->state=-1;
+ return i-3;
+ }
+ }
+ }
+ pc->frame_start_found= pic_found;
+ pc->state= state;
+ return END_NOT_FOUND;
+}
+
+static int vc1_parse(AVCodecParserContext *s,
+ AVCodecContext *avctx,
+ uint8_t **poutbuf, int *poutbuf_size,
+ const uint8_t *buf, int buf_size)
+{
+ ParseContext *pc = s->priv_data;
+ int next;
+
+ if(s->flags & PARSER_FLAG_COMPLETE_FRAMES){
+ next= buf_size;
+ }else{
+ next= vc1_find_frame_end(pc, buf, buf_size);
+
+ if (ff_combine_frame(pc, next, (uint8_t **)&buf, &buf_size) < 0) {
+ *poutbuf = NULL;
+ *poutbuf_size = 0;
+ return buf_size;
+ }
+ }
+ *poutbuf = (uint8_t *)buf;
+ *poutbuf_size = buf_size;
+ return next;
+}
+
+static int vc1_split(AVCodecContext *avctx,
+ const uint8_t *buf, int buf_size)
+{
+ int i;
+ uint32_t state= -1;
+
+ for(i=0; i<buf_size; i++){
+ state= (state<<8) | buf[i];
+ if(IS_MARKER(state) && state != VC1_CODE_SEQHDR && state != VC1_CODE_ENTRYPOINT)
+ return i-3;
+ }
+ return 0;
+}
+
+AVCodecParser vc1_parser = {
+ { CODEC_ID_VC1 },
+ sizeof(ParseContext1),
+ NULL,
+ vc1_parse,
+ ff_parse1_close,
+ vc1_split,
+};
+#endif /* CONFIG_VC1_PARSER */
projects / ffmpeg / blobdiff