mpegvideo.c
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上传日期:2022-07-11
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文件大小:89k
- /*
- * The simplest mpeg encoder (well, it was the simplest!)
- * Copyright (c) 2000,2001 Fabrice Bellard.
- * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
- *
- * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
- *
- * 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 2.1 of the License, or (at your option) any later version.
- *
- * 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 FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- /**
- * @file mpegvideo.c
- * The simplest mpeg encoder (well, it was the simplest!).
- */
- #include "dsputil.h"
- #include "internal.h"
- //#include "integer.h"
- #include "mpegvideo.h"
- #include "mpegvideo_common.h"
- //#include "mjpegenc.h"
- //#include "msmpeg4.h"
- //#include "faandct.h"
- #include <limits.h>
- //#undef NDEBUG
- //#include <assert.h>
- static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
- DCTELEM *block, int n, int qscale);
- static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
- DCTELEM *block, int n, int qscale);
- static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
- DCTELEM *block, int n, int qscale);
- static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
- DCTELEM *block, int n, int qscale);
- static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
- DCTELEM *block, int n, int qscale);
- static void dct_unquantize_h263_intra_c(MpegEncContext *s,
- DCTELEM *block, int n, int qscale);
- static void dct_unquantize_h263_inter_c(MpegEncContext *s,
- DCTELEM *block, int n, int qscale);
- int XVMC_field_start(MpegEncContext*s, AVCodecContext *avctx);
- void XVMC_field_end(MpegEncContext *s);
- void XVMC_decode_mb(MpegEncContext *s);
- /* enable all paranoid tests for rounding, overflows, etc... */
- //#define PARANOID
- //#define DEBUG
- static const uint8_t ff_default_chroma_qscale_table[32]={
- // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31
- };
- const uint8_t ff_mpeg1_dc_scale_table[128]={
- // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
- 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
- 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
- 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
- 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
- };
- const uint8_t *ff_find_start_code(const uint8_t * restrict p, const uint8_t *end, uint32_t * restrict state){
- int i;
- assert(p<=end);
- if(p>=end)
- return end;
- for(i=0; i<3; i++){
- uint32_t tmp= *state << 8;
- *state= tmp + *(p++);
- if(tmp == 0x100 || p==end)
- return p;
- }
- while(p<end){
- if (p[-1] > 1 ) p+= 3;
- else if(p[-2] ) p+= 2;
- else if(p[-3]|(p[-1]-1)) p++;
- else{
- p++;
- break;
- }
- }
- p= FFMIN(p, end)-4;
- *state= AV_RB32(p);
- return p+4;
- }
- /* init common dct for both encoder and decoder */
- int ff_dct_common_init(MpegEncContext *s)
- {
- s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_c;
- s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_c;
- s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_c;
- s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_c;
- s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_c;
- if(s->flags & CODEC_FLAG_BITEXACT)
- s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_bitexact;
- s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_c;
- #if defined(HAVE_MMX)
- MPV_common_init_mmx(s);
- #elif defined(ARCH_ALPHA)
- MPV_common_init_axp(s);
- #elif defined(CONFIG_MLIB)
- MPV_common_init_mlib(s);
- #elif defined(HAVE_MMI)
- MPV_common_init_mmi(s);
- #elif defined(ARCH_ARM)
- MPV_common_init_arm(s);
- #elif defined(HAVE_ALTIVEC)
- MPV_common_init_altivec(s);
- #elif defined(ARCH_BFIN)
- MPV_common_init_bfin(s);
- #endif
- /* load & permutate scantables
- note: only wmv uses different ones
- */
- if(s->alternate_scan){
- ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable , ff_alternate_vertical_scan);
- ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable , ff_alternate_vertical_scan);
- }else{
- ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable , ff_zigzag_direct);
- ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable , ff_zigzag_direct);
- }
- ff_init_scantable(s->dsp.idct_permutation, &s->intra_h_scantable, ff_alternate_horizontal_scan);
- ff_init_scantable(s->dsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan);
- return 0;
- }
- void ff_copy_picture(Picture *dst, Picture *src){
- *dst = *src;
- dst->type= FF_BUFFER_TYPE_COPY;
- }
- /**
- * allocates a Picture
- * The pixels are allocated/set by calling get_buffer() if shared=0
- */
- int alloc_picture(MpegEncContext *s, Picture *pic, int shared){
- const int big_mb_num= s->mb_stride*(s->mb_height+1) + 1; //the +1 is needed so memset(,,stride*height) does not sig11
- const int mb_array_size= s->mb_stride*s->mb_height;
- const int b8_array_size= s->b8_stride*s->mb_height*2;
- const int b4_array_size= s->b4_stride*s->mb_height*4;
- int i;
- int r= -1;
- if(shared){
- assert(pic->data[0]);
- assert(pic->type == 0 || pic->type == FF_BUFFER_TYPE_SHARED);
- pic->type= FF_BUFFER_TYPE_SHARED;
- }else{
- assert(!pic->data[0]);
- r= s->avctx->get_buffer(s->avctx, (AVFrame*)pic);
- if(r<0 || !pic->age || !pic->type || !pic->data[0]){
- av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (%d %d %d %p)n", r, pic->age, pic->type, pic->data[0]);
- return -1;
- }
- if(s->linesize && (s->linesize != pic->linesize[0] || s->uvlinesize != pic->linesize[1])){
- av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (stride changed)n");
- s->avctx->release_buffer(s->avctx, (AVFrame*)pic);
- return -1;
- }
- if(pic->linesize[1] != pic->linesize[2]){
- av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (uv stride mismatch)n");
- s->avctx->release_buffer(s->avctx, (AVFrame*)pic);
- return -1;
- }
- s->linesize = pic->linesize[0];
- s->uvlinesize= pic->linesize[1];
- }
- if(pic->qscale_table==NULL){
- if (s->encoding) {
- CHECKED_ALLOCZ(pic->mb_var , mb_array_size * sizeof(int16_t))
- CHECKED_ALLOCZ(pic->mc_mb_var, mb_array_size * sizeof(int16_t))
- CHECKED_ALLOCZ(pic->mb_mean , mb_array_size * sizeof(int8_t))
- }
- CHECKED_ALLOCZ(pic->mbskip_table , mb_array_size * sizeof(uint8_t)+2) //the +2 is for the slice end check
- CHECKED_ALLOCZ(pic->qscale_table , mb_array_size * sizeof(uint8_t))
- CHECKED_ALLOCZ(pic->mb_type_base , (big_mb_num + s->mb_stride) * sizeof(uint32_t))
- pic->mb_type= pic->mb_type_base + 2*s->mb_stride+1;
- if(s->out_format == FMT_H264){
- for(i=0; i<2; i++){
- CHECKED_ALLOCZ(pic->motion_val_base[i], 2 * (b4_array_size+4) * sizeof(int16_t))
- pic->motion_val[i]= pic->motion_val_base[i]+4;
- CHECKED_ALLOCZ(pic->ref_index[i], b8_array_size * sizeof(uint8_t))
- }
- pic->motion_subsample_log2= 2;
- }else if(s->out_format == FMT_H263 || s->encoding || (s->avctx->debug&FF_DEBUG_MV) || (s->avctx->debug_mv)){
- for(i=0; i<2; i++){
- CHECKED_ALLOCZ(pic->motion_val_base[i], 2 * (b8_array_size+4) * sizeof(int16_t))
- pic->motion_val[i]= pic->motion_val_base[i]+4;
- CHECKED_ALLOCZ(pic->ref_index[i], b8_array_size * sizeof(uint8_t))
- }
- pic->motion_subsample_log2= 3;
- }
- if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
- CHECKED_ALLOCZ(pic->dct_coeff, 64 * mb_array_size * sizeof(DCTELEM)*6)
- }
- pic->qstride= s->mb_stride;
- CHECKED_ALLOCZ(pic->pan_scan , 1 * sizeof(AVPanScan))
- }
- /* It might be nicer if the application would keep track of these
- * but it would require an API change. */
- memmove(s->prev_pict_types+1, s->prev_pict_types, PREV_PICT_TYPES_BUFFER_SIZE-1);
- s->prev_pict_types[0]= s->dropable ? FF_B_TYPE : s->pict_type;
- if(pic->age < PREV_PICT_TYPES_BUFFER_SIZE && s->prev_pict_types[pic->age] == FF_B_TYPE)
- pic->age= INT_MAX; // Skipped MBs in B-frames are quite rare in MPEG-1/2 and it is a bit tricky to skip them anyway.
- return 0;
- fail: //for the CHECKED_ALLOCZ macro
- if(r>=0)
- s->avctx->release_buffer(s->avctx, (AVFrame*)pic);
- return -1;
- }
- /**
- * deallocates a picture
- */
- static void free_picture(MpegEncContext *s, Picture *pic){
- int i;
- if(pic->data[0] && pic->type!=FF_BUFFER_TYPE_SHARED){
- s->avctx->release_buffer(s->avctx, (AVFrame*)pic);
- }
- av_freep(&pic->mb_var);
- av_freep(&pic->mc_mb_var);
- av_freep(&pic->mb_mean);
- av_freep(&pic->mbskip_table);
- av_freep(&pic->qscale_table);
- av_freep(&pic->mb_type_base);
- av_freep(&pic->dct_coeff);
- av_freep(&pic->pan_scan);
- pic->mb_type= NULL;
- for(i=0; i<2; i++){
- av_freep(&pic->motion_val_base[i]);
- av_freep(&pic->ref_index[i]);
- }
- if(pic->type == FF_BUFFER_TYPE_SHARED){
- for(i=0; i<4; i++){
- pic->base[i]=
- pic->data[i]= NULL;
- }
- pic->type= 0;
- }
- }
- static int init_duplicate_context(MpegEncContext *s, MpegEncContext *base){
- int i;
- // edge emu needs blocksize + filter length - 1 (=17x17 for halfpel / 21x21 for h264)
- CHECKED_ALLOCZ(s->allocated_edge_emu_buffer, (s->width+64)*2*21*2); //(width + edge + align)*interlaced*MBsize*tolerance
- s->edge_emu_buffer= s->allocated_edge_emu_buffer + (s->width+64)*2*21;
- //FIXME should be linesize instead of s->width*2 but that is not known before get_buffer()
- CHECKED_ALLOCZ(s->me.scratchpad, (s->width+64)*4*16*2*sizeof(uint8_t))
- s->me.temp= s->me.scratchpad;
- s->rd_scratchpad= s->me.scratchpad;
- s->b_scratchpad= s->me.scratchpad;
- s->obmc_scratchpad= s->me.scratchpad + 16;
- if (s->encoding) {
- CHECKED_ALLOCZ(s->me.map , ME_MAP_SIZE*sizeof(uint32_t))
- CHECKED_ALLOCZ(s->me.score_map, ME_MAP_SIZE*sizeof(uint32_t))
- if(s->avctx->noise_reduction){
- CHECKED_ALLOCZ(s->dct_error_sum, 2 * 64 * sizeof(int))
- }
- }
- CHECKED_ALLOCZ(s->blocks, 64*12*2 * sizeof(DCTELEM))
- s->block= s->blocks[0];
- for(i=0;i<12;i++){
- s->pblocks[i] = (short *)(&s->block[i]);
- }
- return 0;
- fail:
- return -1; //free() through MPV_common_end()
- }
- static void free_duplicate_context(MpegEncContext *s){
- if(s==NULL) return;
- av_freep(&s->allocated_edge_emu_buffer); s->edge_emu_buffer= NULL;
- av_freep(&s->me.scratchpad);
- s->me.temp=
- s->rd_scratchpad=
- s->b_scratchpad=
- s->obmc_scratchpad= NULL;
- av_freep(&s->dct_error_sum);
- av_freep(&s->me.map);
- av_freep(&s->me.score_map);
- av_freep(&s->blocks);
- s->block= NULL;
- }
- static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src){
- #define COPY(a) bak->a= src->a
- COPY(allocated_edge_emu_buffer);
- COPY(edge_emu_buffer);
- COPY(me.scratchpad);
- COPY(me.temp);
- COPY(rd_scratchpad);
- COPY(b_scratchpad);
- COPY(obmc_scratchpad);
- COPY(me.map);
- COPY(me.score_map);
- COPY(blocks);
- COPY(block);
- COPY(start_mb_y);
- COPY(end_mb_y);
- COPY(me.map_generation);
- COPY(pb);
- COPY(dct_error_sum);
- COPY(dct_count[0]);
- COPY(dct_count[1]);
- #undef COPY
- }
- void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src){
- MpegEncContext bak;
- int i;
- //FIXME copy only needed parts
- //START_TIMER
- backup_duplicate_context(&bak, dst);
- memcpy(dst, src, sizeof(MpegEncContext));
- backup_duplicate_context(dst, &bak);
- for(i=0;i<12;i++){
- dst->pblocks[i] = (short *)(&dst->block[i]);
- }
- //STOP_TIMER("update_duplicate_context") //about 10k cycles / 0.01 sec for 1000frames on 1ghz with 2 threads
- }
- /**
- * sets the given MpegEncContext to common defaults (same for encoding and decoding).
- * the changed fields will not depend upon the prior state of the MpegEncContext.
- */
- void MPV_common_defaults(MpegEncContext *s){
- s->y_dc_scale_table=
- s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
- s->chroma_qscale_table= ff_default_chroma_qscale_table;
- s->progressive_frame= 1;
- s->progressive_sequence= 1;
- s->picture_structure= PICT_FRAME;
- s->coded_picture_number = 0;
- s->picture_number = 0;
- s->input_picture_number = 0;
- s->picture_in_gop_number = 0;
- s->f_code = 1;
- s->b_code = 1;
- }
- /**
- * sets the given MpegEncContext to defaults for decoding.
- * the changed fields will not depend upon the prior state of the MpegEncContext.
- */
- void MPV_decode_defaults(MpegEncContext *s){
- MPV_common_defaults(s);
- }
- /**
- * init common structure for both encoder and decoder.
- * this assumes that some variables like width/height are already set
- */
- int MPV_common_init(MpegEncContext *s)
- {
- int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y, threads;
- s->mb_height = (s->height + 15) / 16;
- if(s->avctx->thread_count > MAX_THREADS || (s->avctx->thread_count > s->mb_height && s->mb_height)){
- av_log(s->avctx, AV_LOG_ERROR, "too many threadsn");
- return -1;
- }
- if((s->width || s->height) && avcodec_check_dimensions(s->avctx, s->width, s->height))
- return -1;
- dsputil_init(&s->dsp, s->avctx);
- ff_dct_common_init(s);
- s->flags= s->avctx->flags;
- s->flags2= s->avctx->flags2;
- s->mb_width = (s->width + 15) / 16;
- s->mb_stride = s->mb_width + 1;
- s->b8_stride = s->mb_width*2 + 1;
- s->b4_stride = s->mb_width*4 + 1;
- mb_array_size= s->mb_height * s->mb_stride;
- mv_table_size= (s->mb_height+2) * s->mb_stride + 1;
- /* set chroma shifts */
- avcodec_get_chroma_sub_sample(s->avctx->pix_fmt,&(s->chroma_x_shift),
- &(s->chroma_y_shift) );
- /* set default edge pos, will be overriden in decode_header if needed */
- s->h_edge_pos= s->mb_width*16;
- s->v_edge_pos= s->mb_height*16;
- s->mb_num = s->mb_width * s->mb_height;
- s->block_wrap[0]=
- s->block_wrap[1]=
- s->block_wrap[2]=
- s->block_wrap[3]= s->b8_stride;
- s->block_wrap[4]=
- s->block_wrap[5]= s->mb_stride;
- y_size = s->b8_stride * (2 * s->mb_height + 1);
- c_size = s->mb_stride * (s->mb_height + 1);
- yc_size = y_size + 2 * c_size;
- /* convert fourcc to upper case */
- s->codec_tag= toupper( s->avctx->codec_tag &0xFF)
- + (toupper((s->avctx->codec_tag>>8 )&0xFF)<<8 )
- + (toupper((s->avctx->codec_tag>>16)&0xFF)<<16)
- + (toupper((s->avctx->codec_tag>>24)&0xFF)<<24);
- s->stream_codec_tag= toupper( s->avctx->stream_codec_tag &0xFF)
- + (toupper((s->avctx->stream_codec_tag>>8 )&0xFF)<<8 )
- + (toupper((s->avctx->stream_codec_tag>>16)&0xFF)<<16)
- + (toupper((s->avctx->stream_codec_tag>>24)&0xFF)<<24);
- s->avctx->coded_frame= (AVFrame*)&s->current_picture;
- CHECKED_ALLOCZ(s->mb_index2xy, (s->mb_num+1)*sizeof(int)) //error ressilience code looks cleaner with this
- for(y=0; y<s->mb_height; y++){
- for(x=0; x<s->mb_width; x++){
- s->mb_index2xy[ x + y*s->mb_width ] = x + y*s->mb_stride;
- }
- }
- s->mb_index2xy[ s->mb_height*s->mb_width ] = (s->mb_height-1)*s->mb_stride + s->mb_width; //FIXME really needed?
- if (s->encoding) {
- /* Allocate MV tables */
- CHECKED_ALLOCZ(s->p_mv_table_base , mv_table_size * 2 * sizeof(int16_t))
- CHECKED_ALLOCZ(s->b_forw_mv_table_base , mv_table_size * 2 * sizeof(int16_t))
- CHECKED_ALLOCZ(s->b_back_mv_table_base , mv_table_size * 2 * sizeof(int16_t))
- CHECKED_ALLOCZ(s->b_bidir_forw_mv_table_base , mv_table_size * 2 * sizeof(int16_t))
- CHECKED_ALLOCZ(s->b_bidir_back_mv_table_base , mv_table_size * 2 * sizeof(int16_t))
- CHECKED_ALLOCZ(s->b_direct_mv_table_base , mv_table_size * 2 * sizeof(int16_t))
- s->p_mv_table = s->p_mv_table_base + s->mb_stride + 1;
- s->b_forw_mv_table = s->b_forw_mv_table_base + s->mb_stride + 1;
- s->b_back_mv_table = s->b_back_mv_table_base + s->mb_stride + 1;
- s->b_bidir_forw_mv_table= s->b_bidir_forw_mv_table_base + s->mb_stride + 1;
- s->b_bidir_back_mv_table= s->b_bidir_back_mv_table_base + s->mb_stride + 1;
- s->b_direct_mv_table = s->b_direct_mv_table_base + s->mb_stride + 1;
- if(s->msmpeg4_version){
- CHECKED_ALLOCZ(s->ac_stats, 2*2*(MAX_LEVEL+1)*(MAX_RUN+1)*2*sizeof(int));
- }
- CHECKED_ALLOCZ(s->avctx->stats_out, 256);
- /* Allocate MB type table */
- CHECKED_ALLOCZ(s->mb_type , mb_array_size * sizeof(uint16_t)) //needed for encoding
- CHECKED_ALLOCZ(s->lambda_table, mb_array_size * sizeof(int))
- CHECKED_ALLOCZ(s->q_intra_matrix, 64*32 * sizeof(int))
- CHECKED_ALLOCZ(s->q_inter_matrix, 64*32 * sizeof(int))
- CHECKED_ALLOCZ(s->q_intra_matrix16, 64*32*2 * sizeof(uint16_t))
- CHECKED_ALLOCZ(s->q_inter_matrix16, 64*32*2 * sizeof(uint16_t))
- CHECKED_ALLOCZ(s->input_picture, MAX_PICTURE_COUNT * sizeof(Picture*))
- CHECKED_ALLOCZ(s->reordered_input_picture, MAX_PICTURE_COUNT * sizeof(Picture*))
- if(s->avctx->noise_reduction){
- CHECKED_ALLOCZ(s->dct_offset, 2 * 64 * sizeof(uint16_t))
- }
- }
- CHECKED_ALLOCZ(s->picture, MAX_PICTURE_COUNT * sizeof(Picture))
- CHECKED_ALLOCZ(s->error_status_table, mb_array_size*sizeof(uint8_t))
- if(s->codec_id==CODEC_ID_MPEG4 || (s->flags & CODEC_FLAG_INTERLACED_ME)){
- /* interlaced direct mode decoding tables */
- for(i=0; i<2; i++){
- int j, k;
- for(j=0; j<2; j++){
- for(k=0; k<2; k++){
- CHECKED_ALLOCZ(s->b_field_mv_table_base[i][j][k] , mv_table_size * 2 * sizeof(int16_t))
- s->b_field_mv_table[i][j][k] = s->b_field_mv_table_base[i][j][k] + s->mb_stride + 1;
- }
- CHECKED_ALLOCZ(s->b_field_select_table[i][j] , mb_array_size * 2 * sizeof(uint8_t))
- CHECKED_ALLOCZ(s->p_field_mv_table_base[i][j] , mv_table_size * 2 * sizeof(int16_t))
- s->p_field_mv_table[i][j] = s->p_field_mv_table_base[i][j] + s->mb_stride + 1;
- }
- CHECKED_ALLOCZ(s->p_field_select_table[i] , mb_array_size * 2 * sizeof(uint8_t))
- }
- }
- if (s->out_format == FMT_H263) {
- /* ac values */
- CHECKED_ALLOCZ(s->ac_val_base, yc_size * sizeof(int16_t) * 16);
- s->ac_val[0] = s->ac_val_base + s->b8_stride + 1;
- s->ac_val[1] = s->ac_val_base + y_size + s->mb_stride + 1;
- s->ac_val[2] = s->ac_val[1] + c_size;
- /* cbp values */
- CHECKED_ALLOCZ(s->coded_block_base, y_size);
- s->coded_block= s->coded_block_base + s->b8_stride + 1;
- /* cbp, ac_pred, pred_dir */
- CHECKED_ALLOCZ(s->cbp_table , mb_array_size * sizeof(uint8_t))
- CHECKED_ALLOCZ(s->pred_dir_table, mb_array_size * sizeof(uint8_t))
- }
- if (s->h263_pred || s->h263_plus || !s->encoding) {
- /* dc values */
- //MN: we need these for error resilience of intra-frames
- CHECKED_ALLOCZ(s->dc_val_base, yc_size * sizeof(int16_t));
- s->dc_val[0] = s->dc_val_base + s->b8_stride + 1;
- s->dc_val[1] = s->dc_val_base + y_size + s->mb_stride + 1;
- s->dc_val[2] = s->dc_val[1] + c_size;
- for(i=0;i<yc_size;i++)
- s->dc_val_base[i] = 1024;
- }
- /* which mb is a intra block */
- CHECKED_ALLOCZ(s->mbintra_table, mb_array_size);
- memset(s->mbintra_table, 1, mb_array_size);
- /* init macroblock skip table */
- CHECKED_ALLOCZ(s->mbskip_table, mb_array_size+2);
- //Note the +1 is for a quicker mpeg4 slice_end detection
- CHECKED_ALLOCZ(s->prev_pict_types, PREV_PICT_TYPES_BUFFER_SIZE);
- s->parse_context.state= -1;
- if((s->avctx->debug&(FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) || (s->avctx->debug_mv)){
- s->visualization_buffer[0] = av_malloc((s->mb_width*16 + 2*EDGE_WIDTH) * s->mb_height*16 + 2*EDGE_WIDTH);
- s->visualization_buffer[1] = av_malloc((s->mb_width*16 + 2*EDGE_WIDTH) * s->mb_height*16 + 2*EDGE_WIDTH);
- s->visualization_buffer[2] = av_malloc((s->mb_width*16 + 2*EDGE_WIDTH) * s->mb_height*16 + 2*EDGE_WIDTH);
- }
- s->context_initialized = 1;
- s->thread_context[0]= s;
- threads = s->avctx->thread_count;
- for(i=1; i<threads; i++){
- s->thread_context[i]= av_malloc(sizeof(MpegEncContext));
- memcpy(s->thread_context[i], s, sizeof(MpegEncContext));
- }
- for(i=0; i<threads; i++){
- if(init_duplicate_context(s->thread_context[i], s) < 0)
- goto fail;
- s->thread_context[i]->start_mb_y= (s->mb_height*(i ) + s->avctx->thread_count/2) / s->avctx->thread_count;
- s->thread_context[i]->end_mb_y = (s->mb_height*(i+1) + s->avctx->thread_count/2) / s->avctx->thread_count;
- }
- return 0;
- fail:
- MPV_common_end(s);
- return -1;
- }
- /* init common structure for both encoder and decoder */
- void MPV_common_end(MpegEncContext *s)
- {
- int i, j, k;
- for(i=0; i<s->avctx->thread_count; i++){
- free_duplicate_context(s->thread_context[i]);
- }
- for(i=1; i<s->avctx->thread_count; i++){
- av_freep(&s->thread_context[i]);
- }
- av_freep(&s->parse_context.buffer);
- s->parse_context.buffer_size=0;
- av_freep(&s->mb_type);
- av_freep(&s->p_mv_table_base);
- av_freep(&s->b_forw_mv_table_base);
- av_freep(&s->b_back_mv_table_base);
- av_freep(&s->b_bidir_forw_mv_table_base);
- av_freep(&s->b_bidir_back_mv_table_base);
- av_freep(&s->b_direct_mv_table_base);
- s->p_mv_table= NULL;
- s->b_forw_mv_table= NULL;
- s->b_back_mv_table= NULL;
- s->b_bidir_forw_mv_table= NULL;
- s->b_bidir_back_mv_table= NULL;
- s->b_direct_mv_table= NULL;
- for(i=0; i<2; i++){
- for(j=0; j<2; j++){
- for(k=0; k<2; k++){
- av_freep(&s->b_field_mv_table_base[i][j][k]);
- s->b_field_mv_table[i][j][k]=NULL;
- }
- av_freep(&s->b_field_select_table[i][j]);
- av_freep(&s->p_field_mv_table_base[i][j]);
- s->p_field_mv_table[i][j]=NULL;
- }
- av_freep(&s->p_field_select_table[i]);
- }
- av_freep(&s->dc_val_base);
- av_freep(&s->ac_val_base);
- av_freep(&s->coded_block_base);
- av_freep(&s->mbintra_table);
- av_freep(&s->cbp_table);
- av_freep(&s->pred_dir_table);
- av_freep(&s->mbskip_table);
- av_freep(&s->prev_pict_types);
- av_freep(&s->bitstream_buffer);
- s->allocated_bitstream_buffer_size=0;
- av_freep(&s->avctx->stats_out);
- av_freep(&s->ac_stats);
- av_freep(&s->error_status_table);
- av_freep(&s->mb_index2xy);
- av_freep(&s->lambda_table);
- av_freep(&s->q_intra_matrix);
- av_freep(&s->q_inter_matrix);
- av_freep(&s->q_intra_matrix16);
- av_freep(&s->q_inter_matrix16);
- av_freep(&s->input_picture);
- av_freep(&s->reordered_input_picture);
- av_freep(&s->dct_offset);
- if(s->picture){
- for(i=0; i<MAX_PICTURE_COUNT; i++){
- free_picture(s, &s->picture[i]);
- }
- }
- av_freep(&s->picture);
- s->context_initialized = 0;
- s->last_picture_ptr=
- s->next_picture_ptr=
- s->current_picture_ptr= NULL;
- s->linesize= s->uvlinesize= 0;
- for(i=0; i<3; i++)
- av_freep(&s->visualization_buffer[i]);
- avcodec_default_free_buffers(s->avctx);
- }
- void init_rl(RLTable *rl, uint8_t static_store[2][2*MAX_RUN + MAX_LEVEL + 3])
- {
- int8_t max_level[MAX_RUN+1], max_run[MAX_LEVEL+1];
- uint8_t index_run[MAX_RUN+1];
- int last, run, level, start, end, i;
- /* If table is static, we can quit if rl->max_level[0] is not NULL */
- if(static_store && rl->max_level[0])
- return;
- /* compute max_level[], max_run[] and index_run[] */
- for(last=0;last<2;last++) {
- if (last == 0) {
- start = 0;
- end = rl->last;
- } else {
- start = rl->last;
- end = rl->n;
- }
- memset(max_level, 0, MAX_RUN + 1);
- memset(max_run, 0, MAX_LEVEL + 1);
- memset(index_run, rl->n, MAX_RUN + 1);
- for(i=start;i<end;i++) {
- run = rl->table_run[i];
- level = rl->table_level[i];
- if (index_run[run] == rl->n)
- index_run[run] = i;
- if (level > max_level[run])
- max_level[run] = level;
- if (run > max_run[level])
- max_run[level] = run;
- }
- if(static_store)
- rl->max_level[last] = static_store[last];
- else
- rl->max_level[last] = av_malloc(MAX_RUN + 1);
- memcpy(rl->max_level[last], max_level, MAX_RUN + 1);
- if(static_store)
- rl->max_run[last] = static_store[last] + MAX_RUN + 1;
- else
- rl->max_run[last] = av_malloc(MAX_LEVEL + 1);
- memcpy(rl->max_run[last], max_run, MAX_LEVEL + 1);
- if(static_store)
- rl->index_run[last] = static_store[last] + MAX_RUN + MAX_LEVEL + 2;
- else
- rl->index_run[last] = av_malloc(MAX_RUN + 1);
- memcpy(rl->index_run[last], index_run, MAX_RUN + 1);
- }
- }
- void init_vlc_rl(RLTable *rl)
- {
- int i, q;
- for(q=0; q<32; q++){
- int qmul= q*2;
- int qadd= (q-1)|1;
- if(q==0){
- qmul=1;
- qadd=0;
- }
- for(i=0; i<rl->vlc.table_size; i++){
- int code= rl->vlc.table[i][0];
- int len = rl->vlc.table[i][1];
- int level, run;
- if(len==0){ // illegal code
- run= 66;
- level= MAX_LEVEL;
- }else if(len<0){ //more bits needed
- run= 0;
- level= code;
- }else{
- if(code==rl->n){ //esc
- run= 66;
- level= 0;
- }else{
- run= rl->table_run [code] + 1;
- level= rl->table_level[code] * qmul + qadd;
- if(code >= rl->last) run+=192;
- }
- }
- rl->rl_vlc[q][i].len= len;
- rl->rl_vlc[q][i].level= level;
- rl->rl_vlc[q][i].run= run;
- }
- }
- }
- int ff_find_unused_picture(MpegEncContext *s, int shared){
- int i;
- if(shared){
- for(i=0; i<MAX_PICTURE_COUNT; i++){
- if(s->picture[i].data[0]==NULL && s->picture[i].type==0) return i;
- }
- }else{
- for(i=0; i<MAX_PICTURE_COUNT; i++){
- if(s->picture[i].data[0]==NULL && s->picture[i].type!=0) return i; //FIXME
- }
- for(i=0; i<MAX_PICTURE_COUNT; i++){
- if(s->picture[i].data[0]==NULL) return i;
- }
- }
- av_log(s->avctx, AV_LOG_FATAL, "Internal error, picture buffer overflown");
- /* We could return -1, but the codec would crash trying to draw into a
- * non-existing frame anyway. This is safer than waiting for a random crash.
- * Also the return of this is never useful, an encoder must only allocate
- * as much as allowed in the specification. This has no relationship to how
- * much libavcodec could allocate (and MAX_PICTURE_COUNT is always large
- * enough for such valid streams).
- * Plus, a decoder has to check stream validity and remove frames if too
- * many reference frames are around. Waiting for "OOM" is not correct at
- * all. Similarly, missing reference frames have to be replaced by
- * interpolated/MC frames, anything else is a bug in the codec ...
- */
- abort();
- return -1;
- }
- static void update_noise_reduction(MpegEncContext *s){
- int intra, i;
- for(intra=0; intra<2; intra++){
- if(s->dct_count[intra] > (1<<16)){
- for(i=0; i<64; i++){
- s->dct_error_sum[intra][i] >>=1;
- }
- s->dct_count[intra] >>= 1;
- }
- for(i=0; i<64; i++){
- s->dct_offset[intra][i]= (s->avctx->noise_reduction * s->dct_count[intra] + s->dct_error_sum[intra][i]/2) / (s->dct_error_sum[intra][i]+1);
- }
- }
- }
- /**
- * generic function for encode/decode called after coding/decoding the header and before a frame is coded/decoded
- */
- int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
- {
- int i;
- AVFrame *pic;
- s->mb_skipped = 0;
- assert(s->last_picture_ptr==NULL || s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3);
- /* mark&release old frames */
- if (s->pict_type != FF_B_TYPE && s->last_picture_ptr && s->last_picture_ptr != s->next_picture_ptr && s->last_picture_ptr->data[0]) {
- if(s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3){
- avctx->release_buffer(avctx, (AVFrame*)s->last_picture_ptr);
- /* release forgotten pictures */
- /* if(mpeg124/h263) */
- if(!s->encoding){
- for(i=0; i<MAX_PICTURE_COUNT; i++){
- if(s->picture[i].data[0] && &s->picture[i] != s->next_picture_ptr && s->picture[i].reference){
- av_log(avctx, AV_LOG_ERROR, "releasing zombie picturen");
- avctx->release_buffer(avctx, (AVFrame*)&s->picture[i]);
- }
- }
- }
- }
- }
- alloc:
- if(!s->encoding){
- /* release non reference frames */
- for(i=0; i<MAX_PICTURE_COUNT; i++){
- if(s->picture[i].data[0] && !s->picture[i].reference /*&& s->picture[i].type!=FF_BUFFER_TYPE_SHARED*/){
- s->avctx->release_buffer(s->avctx, (AVFrame*)&s->picture[i]);
- }
- }
- if(s->current_picture_ptr && s->current_picture_ptr->data[0]==NULL)
- pic= (AVFrame*)s->current_picture_ptr; //we already have a unused image (maybe it was set before reading the header)
- else{
- i= ff_find_unused_picture(s, 0);
- pic= (AVFrame*)&s->picture[i];
- }
- pic->reference= 0;
- if (!s->dropable){
- if (s->codec_id == CODEC_ID_H264)
- pic->reference = s->picture_structure;
- else if (s->pict_type != FF_B_TYPE)
- pic->reference = 3;
- }
- pic->coded_picture_number= s->coded_picture_number++;
- if( alloc_picture(s, (Picture*)pic, 0) < 0)
- return -1;
- s->current_picture_ptr= (Picture*)pic;
- s->current_picture_ptr->top_field_first= s->top_field_first; //FIXME use only the vars from current_pic
- s->current_picture_ptr->interlaced_frame= !s->progressive_frame && !s->progressive_sequence;
- }
- s->current_picture_ptr->pict_type= s->pict_type;
- // if(s->flags && CODEC_FLAG_QSCALE)
- // s->current_picture_ptr->quality= s->new_picture_ptr->quality;
- s->current_picture_ptr->key_frame= s->pict_type == FF_I_TYPE;
- ff_copy_picture(&s->current_picture, s->current_picture_ptr);
- if(s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3)
- {
- if (s->pict_type != FF_B_TYPE) {
- s->last_picture_ptr= s->next_picture_ptr;
- if(!s->dropable)
- s->next_picture_ptr= s->current_picture_ptr;
- }
- /* av_log(s->avctx, AV_LOG_DEBUG, "L%p N%p C%p L%p N%p C%p type:%d drop:%dn", s->last_picture_ptr, s->next_picture_ptr,s->current_picture_ptr,
- s->last_picture_ptr ? s->last_picture_ptr->data[0] : NULL,
- s->next_picture_ptr ? s->next_picture_ptr->data[0] : NULL,
- s->current_picture_ptr ? s->current_picture_ptr->data[0] : NULL,
- s->pict_type, s->dropable);*/
- if(s->last_picture_ptr) ff_copy_picture(&s->last_picture, s->last_picture_ptr);
- if(s->next_picture_ptr) ff_copy_picture(&s->next_picture, s->next_picture_ptr);
- if(s->pict_type != FF_I_TYPE && (s->last_picture_ptr==NULL || s->last_picture_ptr->data[0]==NULL) && !s->dropable && s->codec_id != CODEC_ID_H264){
- av_log(avctx, AV_LOG_ERROR, "warning: first frame is no keyframen");
- assert(s->pict_type != FF_B_TYPE); //these should have been dropped if we don't have a reference
- goto alloc;
- }
- assert(s->pict_type == FF_I_TYPE || (s->last_picture_ptr && s->last_picture_ptr->data[0]));
- if(s->picture_structure!=PICT_FRAME && s->out_format != FMT_H264){
- int i;
- for(i=0; i<4; i++){
- if(s->picture_structure == PICT_BOTTOM_FIELD){
- s->current_picture.data[i] += s->current_picture.linesize[i];
- }
- s->current_picture.linesize[i] *= 2;
- s->last_picture.linesize[i] *=2;
- s->next_picture.linesize[i] *=2;
- }
- }
- }
- s->hurry_up= s->avctx->hurry_up;
- s->error_recognition= avctx->error_recognition;
- /* set dequantizer, we can't do it during init as it might change for mpeg4
- and we can't do it in the header decode as init is not called for mpeg4 there yet */
- if(s->mpeg_quant || s->codec_id == CODEC_ID_MPEG2VIDEO){
- s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra;
- s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter;
- }else if(s->out_format == FMT_H263 || s->out_format == FMT_H261){
- s->dct_unquantize_intra = s->dct_unquantize_h263_intra;
- s->dct_unquantize_inter = s->dct_unquantize_h263_inter;
- }else{
- s->dct_unquantize_intra = s->dct_unquantize_mpeg1_intra;
- s->dct_unquantize_inter = s->dct_unquantize_mpeg1_inter;
- }
- if(s->dct_error_sum){
- assert(s->avctx->noise_reduction && s->encoding);
- update_noise_reduction(s);
- }
- #ifdef CONFIG_XVMC
- if(s->avctx->xvmc_acceleration)
- return XVMC_field_start(s, avctx);
- #endif
- return 0;
- }
- /* generic function for encode/decode called after a frame has been coded/decoded */
- void MPV_frame_end(MpegEncContext *s)
- {
- int i;
- /* draw edge for correct motion prediction if outside */
- #ifdef CONFIG_XVMC
- //just to make sure that all data is rendered.
- if(s->avctx->xvmc_acceleration){
- XVMC_field_end(s);
- }else
- #endif
- if(!(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
- && s->unrestricted_mv
- && s->current_picture.reference
- && !s->intra_only
- && !(s->flags&CODEC_FLAG_EMU_EDGE)) {
- s->dsp.draw_edges(s->current_picture.data[0], s->linesize , s->h_edge_pos , s->v_edge_pos , EDGE_WIDTH );
- s->dsp.draw_edges(s->current_picture.data[1], s->uvlinesize, s->h_edge_pos>>1, s->v_edge_pos>>1, EDGE_WIDTH/2);
- s->dsp.draw_edges(s->current_picture.data[2], s->uvlinesize, s->h_edge_pos>>1, s->v_edge_pos>>1, EDGE_WIDTH/2);
- }
- emms_c();
- s->last_pict_type = s->pict_type;
- s->last_lambda_for[s->pict_type]= s->current_picture_ptr->quality;
- if(s->pict_type!=FF_B_TYPE){
- s->last_non_b_pict_type= s->pict_type;
- }
- #if 0
- /* copy back current_picture variables */
- for(i=0; i<MAX_PICTURE_COUNT; i++){
- if(s->picture[i].data[0] == s->current_picture.data[0]){
- s->picture[i]= s->current_picture;
- break;
- }
- }
- assert(i<MAX_PICTURE_COUNT);
- #endif
- if(s->encoding){
- /* release non-reference frames */
- for(i=0; i<MAX_PICTURE_COUNT; i++){
- if(s->picture[i].data[0] && !s->picture[i].reference /*&& s->picture[i].type!=FF_BUFFER_TYPE_SHARED*/){
- s->avctx->release_buffer(s->avctx, (AVFrame*)&s->picture[i]);
- }
- }
- }
- // clear copies, to avoid confusion
- #if 0
- memset(&s->last_picture, 0, sizeof(Picture));
- memset(&s->next_picture, 0, sizeof(Picture));
- memset(&s->current_picture, 0, sizeof(Picture));
- #endif
- s->avctx->coded_frame= (AVFrame*)s->current_picture_ptr;
- }
- /**
- * draws an line from (ex, ey) -> (sx, sy).
- * @param w width of the image
- * @param h height of the image
- * @param stride stride/linesize of the image
- * @param color color of the arrow
- */
- /*
- static void draw_line(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h, int stride, int color){
- int x, y, fr, f;
- sx= av_clip(sx, 0, w-1);
- sy= av_clip(sy, 0, h-1);
- ex= av_clip(ex, 0, w-1);
- ey= av_clip(ey, 0, h-1);
- buf[sy*stride + sx]+= color;
- if(FFABS(ex - sx) > FFABS(ey - sy)){
- if(sx > ex){
- FFSWAP(int, sx, ex);
- FFSWAP(int, sy, ey);
- }
- buf+= sx + sy*stride;
- ex-= sx;
- f= ((ey-sy)<<16)/ex;
- for(x= 0; x <= ex; x++){
- y = (x*f)>>16;
- fr= (x*f)&0xFFFF;
- buf[ y *stride + x]+= (color*(0x10000-fr))>>16;
- buf[(y+1)*stride + x]+= (color* fr )>>16;
- }
- }else{
- if(sy > ey){
- FFSWAP(int, sx, ex);
- FFSWAP(int, sy, ey);
- }
- buf+= sx + sy*stride;
- ey-= sy;
- if(ey) f= ((ex-sx)<<16)/ey;
- else f= 0;
- for(y= 0; y <= ey; y++){
- x = (y*f)>>16;
- fr= (y*f)&0xFFFF;
- buf[y*stride + x ]+= (color*(0x10000-fr))>>16;
- buf[y*stride + x+1]+= (color* fr )>>16;
- }
- }
- }
- */
- /**
- * draws an arrow from (ex, ey) -> (sx, sy).
- * @param w width of the image
- * @param h height of the image
- * @param stride stride/linesize of the image
- * @param color color of the arrow
- */
- /*
- static void draw_arrow(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h, int stride, int color){
- int dx,dy;
- sx= av_clip(sx, -100, w+100);
- sy= av_clip(sy, -100, h+100);
- ex= av_clip(ex, -100, w+100);
- ey= av_clip(ey, -100, h+100);
- dx= ex - sx;
- dy= ey - sy;
- if(dx*dx + dy*dy > 3*3){
- int rx= dx + dy;
- int ry= -dx + dy;
- int length= ff_sqrt((rx*rx + ry*ry)<<8);
- //FIXME subpixel accuracy
- rx= ROUNDED_DIV(rx*3<<4, length);
- ry= ROUNDED_DIV(ry*3<<4, length);
- draw_line(buf, sx, sy, sx + rx, sy + ry, w, h, stride, color);
- draw_line(buf, sx, sy, sx - ry, sy + rx, w, h, stride, color);
- }
- draw_line(buf, sx, sy, ex, ey, w, h, stride, color);
- }
- */
- /**
- * prints debuging info for the given picture.
- */
- /*
- void ff_print_debug_info(MpegEncContext *s, AVFrame *pict){
- if(!pict || !pict->mb_type) return;
- if(s->avctx->debug&(FF_DEBUG_SKIP | FF_DEBUG_QP | FF_DEBUG_MB_TYPE)){
- int x,y;
- av_log(s->avctx,AV_LOG_DEBUG,"New frame, type: ");
- switch (pict->pict_type) {
- case FF_I_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"In"); break;
- case FF_P_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"Pn"); break;
- case FF_B_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"Bn"); break;
- case FF_S_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"Sn"); break;
- case FF_SI_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"SIn"); break;
- case FF_SP_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"SPn"); break;
- }
- for(y=0; y<s->mb_height; y++){
- for(x=0; x<s->mb_width; x++){
- if(s->avctx->debug&FF_DEBUG_SKIP){
- int count= s->mbskip_table[x + y*s->mb_stride];
- if(count>9) count=9;
- av_log(s->avctx, AV_LOG_DEBUG, "%1d", count);
- }
- if(s->avctx->debug&FF_DEBUG_QP){
- av_log(s->avctx, AV_LOG_DEBUG, "%2d", pict->qscale_table[x + y*s->mb_stride]);
- }
- if(s->avctx->debug&FF_DEBUG_MB_TYPE){
- int mb_type= pict->mb_type[x + y*s->mb_stride];
- //Type & MV direction
- if(IS_PCM(mb_type))
- av_log(s->avctx, AV_LOG_DEBUG, "P");
- else if(IS_INTRA(mb_type) && IS_ACPRED(mb_type))
- av_log(s->avctx, AV_LOG_DEBUG, "A");
- else if(IS_INTRA4x4(mb_type))
- av_log(s->avctx, AV_LOG_DEBUG, "i");
- else if(IS_INTRA16x16(mb_type))
- av_log(s->avctx, AV_LOG_DEBUG, "I");
- else if(IS_DIRECT(mb_type) && IS_SKIP(mb_type))
- av_log(s->avctx, AV_LOG_DEBUG, "d");
- else if(IS_DIRECT(mb_type))
- av_log(s->avctx, AV_LOG_DEBUG, "D");
- else if(IS_GMC(mb_type) && IS_SKIP(mb_type))
- av_log(s->avctx, AV_LOG_DEBUG, "g");
- else if(IS_GMC(mb_type))
- av_log(s->avctx, AV_LOG_DEBUG, "G");
- else if(IS_SKIP(mb_type))
- av_log(s->avctx, AV_LOG_DEBUG, "S");
- else if(!USES_LIST(mb_type, 1))
- av_log(s->avctx, AV_LOG_DEBUG, ">");
- else if(!USES_LIST(mb_type, 0))
- av_log(s->avctx, AV_LOG_DEBUG, "<");
- else{
- assert(USES_LIST(mb_type, 0) && USES_LIST(mb_type, 1));
- av_log(s->avctx, AV_LOG_DEBUG, "X");
- }
- //segmentation
- if(IS_8X8(mb_type))
- av_log(s->avctx, AV_LOG_DEBUG, "+");
- else if(IS_16X8(mb_type))
- av_log(s->avctx, AV_LOG_DEBUG, "-");
- else if(IS_8X16(mb_type))
- av_log(s->avctx, AV_LOG_DEBUG, "|");
- else if(IS_INTRA(mb_type) || IS_16X16(mb_type))
- av_log(s->avctx, AV_LOG_DEBUG, " ");
- else
- av_log(s->avctx, AV_LOG_DEBUG, "?");
- if(IS_INTERLACED(mb_type) && s->codec_id == CODEC_ID_H264)
- av_log(s->avctx, AV_LOG_DEBUG, "=");
- else
- av_log(s->avctx, AV_LOG_DEBUG, " ");
- }
- // av_log(s->avctx, AV_LOG_DEBUG, " ");
- }
- av_log(s->avctx, AV_LOG_DEBUG, "n");
- }
- }
- if((s->avctx->debug&(FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) || (s->avctx->debug_mv)){
- const int shift= 1 + s->quarter_sample;
- int mb_y;
- uint8_t *ptr;
- int i;
- int h_chroma_shift, v_chroma_shift, block_height;
- const int width = s->avctx->width;
- const int height= s->avctx->height;
- const int mv_sample_log2= 4 - pict->motion_subsample_log2;
- const int mv_stride= (s->mb_width << mv_sample_log2) + (s->codec_id == CODEC_ID_H264 ? 0 : 1);
- s->low_delay=0; //needed to see the vectors without trashing the buffers
- avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &h_chroma_shift, &v_chroma_shift);
- for(i=0; i<3; i++){
- memcpy(s->visualization_buffer[i], pict->data[i], (i==0) ? pict->linesize[i]*height:pict->linesize[i]*height >> v_chroma_shift);
- pict->data[i]= s->visualization_buffer[i];
- }
- pict->type= FF_BUFFER_TYPE_COPY;
- ptr= pict->data[0];
- block_height = 16>>v_chroma_shift;
- for(mb_y=0; mb_y<s->mb_height; mb_y++){
- int mb_x;
- for(mb_x=0; mb_x<s->mb_width; mb_x++){
- const int mb_index= mb_x + mb_y*s->mb_stride;
- if((s->avctx->debug_mv) && pict->motion_val){
- int type;
- for(type=0; type<3; type++){
- int direction = 0;
- switch (type) {
- case 0: if ((!(s->avctx->debug_mv&FF_DEBUG_VIS_MV_P_FOR)) || (pict->pict_type!=FF_P_TYPE))
- continue;
- direction = 0;
- break;
- case 1: if ((!(s->avctx->debug_mv&FF_DEBUG_VIS_MV_B_FOR)) || (pict->pict_type!=FF_B_TYPE))
- continue;
- direction = 0;
- break;
- case 2: if ((!(s->avctx->debug_mv&FF_DEBUG_VIS_MV_B_BACK)) || (pict->pict_type!=FF_B_TYPE))
- continue;
- direction = 1;
- break;
- }
- if(!USES_LIST(pict->mb_type[mb_index], direction))
- continue;
- if(IS_8X8(pict->mb_type[mb_index])){
- int i;
- for(i=0; i<4; i++){
- int sx= mb_x*16 + 4 + 8*(i&1);
- int sy= mb_y*16 + 4 + 8*(i>>1);
- int xy= (mb_x*2 + (i&1) + (mb_y*2 + (i>>1))*mv_stride) << (mv_sample_log2-1);
- int mx= (pict->motion_val[direction][xy][0]>>shift) + sx;
- int my= (pict->motion_val[direction][xy][1]>>shift) + sy;
- draw_arrow(ptr, sx, sy, mx, my, width, height, s->linesize, 100);
- }
- }else if(IS_16X8(pict->mb_type[mb_index])){
- int i;
- for(i=0; i<2; i++){
- int sx=mb_x*16 + 8;
- int sy=mb_y*16 + 4 + 8*i;
- int xy= (mb_x*2 + (mb_y*2 + i)*mv_stride) << (mv_sample_log2-1);
- int mx=(pict->motion_val[direction][xy][0]>>shift);
- int my=(pict->motion_val[direction][xy][1]>>shift);
- if(IS_INTERLACED(pict->mb_type[mb_index]))
- my*=2;
- draw_arrow(ptr, sx, sy, mx+sx, my+sy, width, height, s->linesize, 100);
- }
- }else if(IS_8X16(pict->mb_type[mb_index])){
- int i;
- for(i=0; i<2; i++){
- int sx=mb_x*16 + 4 + 8*i;
- int sy=mb_y*16 + 8;
- int xy= (mb_x*2 + i + mb_y*2*mv_stride) << (mv_sample_log2-1);
- int mx=(pict->motion_val[direction][xy][0]>>shift);
- int my=(pict->motion_val[direction][xy][1]>>shift);
- if(IS_INTERLACED(pict->mb_type[mb_index]))
- my*=2;
- draw_arrow(ptr, sx, sy, mx+sx, my+sy, width, height, s->linesize, 100);
- }
- }else{
- int sx= mb_x*16 + 8;
- int sy= mb_y*16 + 8;
- int xy= (mb_x + mb_y*mv_stride) << mv_sample_log2;
- int mx= (pict->motion_val[direction][xy][0]>>shift) + sx;
- int my= (pict->motion_val[direction][xy][1]>>shift) + sy;
- draw_arrow(ptr, sx, sy, mx, my, width, height, s->linesize, 100);
- }
- }
- }
- if((s->avctx->debug&FF_DEBUG_VIS_QP) && pict->motion_val){
- uint64_t c= (pict->qscale_table[mb_index]*128/31) * 0x0101010101010101ULL;
- int y;
- for(y=0; y<block_height; y++){
- *(uint64_t*)(pict->data[1] + 8*mb_x + (block_height*mb_y + y)*pict->linesize[1])= c;
- *(uint64_t*)(pict->data[2] + 8*mb_x + (block_height*mb_y + y)*pict->linesize[2])= c;
- }
- }
- if((s->avctx->debug&FF_DEBUG_VIS_MB_TYPE) && pict->motion_val){
- int mb_type= pict->mb_type[mb_index];
- uint64_t u,v;
- int y;
- #define COLOR(theta, r)
- u= (int)(128 + r*cos(theta*3.141592/180));
- v= (int)(128 + r*sin(theta*3.141592/180));
- u=v=128;
- if(IS_PCM(mb_type)){
- COLOR(120,48)
- }else if((IS_INTRA(mb_type) && IS_ACPRED(mb_type)) || IS_INTRA16x16(mb_type)){
- COLOR(30,48)
- }else if(IS_INTRA4x4(mb_type)){
- COLOR(90,48)
- }else if(IS_DIRECT(mb_type) && IS_SKIP(mb_type)){
- // COLOR(120,48)
- }else if(IS_DIRECT(mb_type)){
- COLOR(150,48)
- }else if(IS_GMC(mb_type) && IS_SKIP(mb_type)){
- COLOR(170,48)
- }else if(IS_GMC(mb_type)){
- COLOR(190,48)
- }else if(IS_SKIP(mb_type)){
- // COLOR(180,48)
- }else if(!USES_LIST(mb_type, 1)){
- COLOR(240,48)
- }else if(!USES_LIST(mb_type, 0)){
- COLOR(0,48)
- }else{
- assert(USES_LIST(mb_type, 0) && USES_LIST(mb_type, 1));
- COLOR(300,48)
- }
- u*= 0x0101010101010101ULL;
- v*= 0x0101010101010101ULL;
- for(y=0; y<block_height; y++){
- *(uint64_t*)(pict->data[1] + 8*mb_x + (block_height*mb_y + y)*pict->linesize[1])= u;
- *(uint64_t*)(pict->data[2] + 8*mb_x + (block_height*mb_y + y)*pict->linesize[2])= v;
- }
- //segmentation
- if(IS_8X8(mb_type) || IS_16X8(mb_type)){
- *(uint64_t*)(pict->data[0] + 16*mb_x + 0 + (16*mb_y + 8)*pict->linesize[0])^= 0x8080808080808080ULL;
- *(uint64_t*)(pict->data[0] + 16*mb_x + 8 + (16*mb_y + 8)*pict->linesize[0])^= 0x8080808080808080ULL;
- }
- if(IS_8X8(mb_type) || IS_8X16(mb_type)){
- for(y=0; y<16; y++)
- pict->data[0][16*mb_x + 8 + (16*mb_y + y)*pict->linesize[0]]^= 0x80;
- }
- if(IS_8X8(mb_type) && mv_sample_log2 >= 2){
- int dm= 1 << (mv_sample_log2-2);
- for(i=0; i<4; i++){
- int sx= mb_x*16 + 8*(i&1);
- int sy= mb_y*16 + 8*(i>>1);
- int xy= (mb_x*2 + (i&1) + (mb_y*2 + (i>>1))*mv_stride) << (mv_sample_log2-1);
- //FIXME bidir
- int32_t *mv = (int32_t*)&pict->motion_val[0][xy];
- if(mv[0] != mv[dm] || mv[dm*mv_stride] != mv[dm*(mv_stride+1)])
- for(y=0; y<8; y++)
- pict->data[0][sx + 4 + (sy + y)*pict->linesize[0]]^= 0x80;
- if(mv[0] != mv[dm*mv_stride] || mv[dm] != mv[dm*(mv_stride+1)])
- *(uint64_t*)(pict->data[0] + sx + (sy + 4)*pict->linesize[0])^= 0x8080808080808080ULL;
- }
- }
- if(IS_INTERLACED(mb_type) && s->codec_id == CODEC_ID_H264){
- // hmm
- }
- }
- s->mbskip_table[mb_index]=0;
- }
- }
- }
- }*/
- static inline int hpel_motion_lowres(MpegEncContext *s,
- uint8_t *dest, uint8_t *src,
- int field_based, int field_select,
- int src_x, int src_y,
- int width, int height, int stride,
- int h_edge_pos, int v_edge_pos,
- int w, int h, h264_chroma_mc_func *pix_op,
- int motion_x, int motion_y)
- {
- const int lowres= s->avctx->lowres;
- const int s_mask= (2<<lowres)-1;
- int emu=0;
- int sx, sy;
- if(s->quarter_sample){
- motion_x/=2;
- motion_y/=2;
- }
- sx= motion_x & s_mask;
- sy= motion_y & s_mask;
- src_x += motion_x >> (lowres+1);
- src_y += motion_y >> (lowres+1);
- src += src_y * stride + src_x;
- if( src_x > h_edge_pos - (!!sx) - w
- || src_y >(v_edge_pos >> field_based) - (!!sy) - h){
- ff_emulated_edge_mc(s->edge_emu_buffer, src, s->linesize, w+1, (h+1)<<field_based,
- src_x, src_y<<field_based, h_edge_pos, v_edge_pos);
- src= s->edge_emu_buffer;
- emu=1;
- }
- sx <<= 2 - lowres;
- sy <<= 2 - lowres;
- if(field_select)
- src += s->linesize;
- pix_op[lowres](dest, src, stride, h, sx, sy);
- return emu;
- }
- /* apply one mpeg motion vector to the three components */
- static av_always_inline void mpeg_motion_lowres(MpegEncContext *s,
- uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
- int field_based, int bottom_field, int field_select,
- uint8_t **ref_picture, h264_chroma_mc_func *pix_op,
- int motion_x, int motion_y, int h)
- {
- uint8_t *ptr_y, *ptr_cb, *ptr_cr;
- int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, uvlinesize, linesize, sx, sy, uvsx, uvsy;
- const int lowres= s->avctx->lowres;
- const int block_s= 8>>lowres;
- const int s_mask= (2<<lowres)-1;
- const int h_edge_pos = s->h_edge_pos >> lowres;
- const int v_edge_pos = s->v_edge_pos >> lowres;
- linesize = s->current_picture.linesize[0] << field_based;
- uvlinesize = s->current_picture.linesize[1] << field_based;
- if(s->quarter_sample){ //FIXME obviously not perfect but qpel will not work in lowres anyway
- motion_x/=2;
- motion_y/=2;
- }
- if(field_based){
- motion_y += (bottom_field - field_select)*((1<<lowres)-1);
- }
- sx= motion_x & s_mask;
- sy= motion_y & s_mask;
- src_x = s->mb_x*2*block_s + (motion_x >> (lowres+1));
- src_y =(s->mb_y*2*block_s>>field_based) + (motion_y >> (lowres+1));
- if (s->out_format == FMT_H263) {
- uvsx = ((motion_x>>1) & s_mask) | (sx&1);
- uvsy = ((motion_y>>1) & s_mask) | (sy&1);
- uvsrc_x = src_x>>1;
- uvsrc_y = src_y>>1;
- }else if(s->out_format == FMT_H261){//even chroma mv's are full pel in H261
- mx = motion_x / 4;
- my = motion_y / 4;
- uvsx = (2*mx) & s_mask;
- uvsy = (2*my) & s_mask;
- uvsrc_x = s->mb_x*block_s + (mx >> lowres);
- uvsrc_y = s->mb_y*block_s + (my >> lowres);
- } else {
- mx = motion_x / 2;
- my = motion_y / 2;
- uvsx = mx & s_mask;
- uvsy = my & s_mask;
- uvsrc_x = s->mb_x*block_s + (mx >> (lowres+1));
- uvsrc_y =(s->mb_y*block_s>>field_based) + (my >> (lowres+1));
- }
- ptr_y = ref_picture[0] + src_y * linesize + src_x;
- ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
- ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
- if( src_x > h_edge_pos - (!!sx) - 2*block_s
- || src_y >(v_edge_pos >> field_based) - (!!sy) - h){
- ff_emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize, 17, 17+field_based,
- src_x, src_y<<field_based, h_edge_pos, v_edge_pos);
- ptr_y = s->edge_emu_buffer;
- if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
- uint8_t *uvbuf= s->edge_emu_buffer+18*s->linesize;
- ff_emulated_edge_mc(uvbuf , ptr_cb, s->uvlinesize, 9, 9+field_based,
- uvsrc_x, uvsrc_y<<field_based, h_edge_pos>>1, v_edge_pos>>1);
- ff_emulated_edge_mc(uvbuf+16, ptr_cr, s->uvlinesize, 9, 9+field_based,
- uvsrc_x, uvsrc_y<<field_based, h_edge_pos>>1, v_edge_pos>>1);
- ptr_cb= uvbuf;
- ptr_cr= uvbuf+16;
- }
- }
- if(bottom_field){ //FIXME use this for field pix too instead of the obnoxious hack which changes picture.data
- dest_y += s->linesize;
- dest_cb+= s->uvlinesize;
- dest_cr+= s->uvlinesize;
- }
- if(field_select){
- ptr_y += s->linesize;
- ptr_cb+= s->uvlinesize;
- ptr_cr+= s->uvlinesize;
- }
- sx <<= 2 - lowres;
- sy <<= 2 - lowres;
- pix_op[lowres-1](dest_y, ptr_y, linesize, h, sx, sy);
- if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
- uvsx <<= 2 - lowres;
- uvsy <<= 2 - lowres;
- pix_op[lowres](dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
- pix_op[lowres](dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
- }
- //FIXME h261 lowres loop filter
- }
- static inline void chroma_4mv_motion_lowres(MpegEncContext *s,
- uint8_t *dest_cb, uint8_t *dest_cr,
- uint8_t **ref_picture,
- h264_chroma_mc_func *pix_op,
- int mx, int my){
- const int lowres= s->avctx->lowres;
- const int block_s= 8>>lowres;
- const int s_mask= (2<<lowres)-1;
- const int h_edge_pos = s->h_edge_pos >> (lowres+1);
- const int v_edge_pos = s->v_edge_pos >> (lowres+1);
- int emu=0, src_x, src_y, offset, sx, sy;
- uint8_t *ptr;
- if(s->quarter_sample){
- mx/=2;
- my/=2;
- }
- /* In case of 8X8, we construct a single chroma motion vector
- with a special rounding */
- mx= ff_h263_round_chroma(mx);
- my= ff_h263_round_chroma(my);
- sx= mx & s_mask;
- sy= my & s_mask;
- src_x = s->mb_x*block_s + (mx >> (lowres+1));
- src_y = s->mb_y*block_s + (my >> (lowres+1));
- offset = src_y * s->uvlinesize + src_x;
- ptr = ref_picture[1] + offset;
- if(s->flags&CODEC_FLAG_EMU_EDGE){
- if( src_x > h_edge_pos - (!!sx) - block_s
- || src_y > v_edge_pos - (!!sy) - block_s){
- ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, src_x, src_y, h_edge_pos, v_edge_pos);
- ptr= s->edge_emu_buffer;
- emu=1;
- }
- }
- sx <<= 2 - lowres;
- sy <<= 2 - lowres;
- pix_op[lowres](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
- ptr = ref_picture[2] + offset;
- if(emu){
- ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, src_x, src_y, h_edge_pos, v_edge_pos);
- ptr= s->edge_emu_buffer;
- }
- pix_op[lowres](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
- }
- /**
- * motion compensation of a single macroblock
- * @param s context
- * @param dest_y luma destination pointer
- * @param dest_cb chroma cb/u destination pointer
- * @param dest_cr chroma cr/v destination pointer
- * @param dir direction (0->forward, 1->backward)
- * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
- * @param pic_op halfpel motion compensation function (average or put normally)
- * the motion vectors are taken from s->mv and the MV type from s->mv_type
- */
- static inline void MPV_motion_lowres(MpegEncContext *s,
- uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
- int dir, uint8_t **ref_picture,
- h264_chroma_mc_func *pix_op)
- {
- int mx, my;
- int mb_x, mb_y, i;
- const int lowres= s->avctx->lowres;
- const int block_s= 8>>lowres;
- mb_x = s->mb_x;
- mb_y = s->mb_y;
- switch(s->mv_type) {
- case MV_TYPE_16X16:
- mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
- 0, 0, 0,
- ref_picture, pix_op,
- s->mv[dir][0][0], s->mv[dir][0][1], 2*block_s);
- break;
- case MV_TYPE_8X8:
- mx = 0;
- my = 0;
- for(i=0;i<4;i++) {
- hpel_motion_lowres(s, dest_y + ((i & 1) + (i >> 1) * s->linesize)*block_s,
- ref_picture[0], 0, 0,
- (2*mb_x + (i & 1))*block_s, (2*mb_y + (i >>1))*block_s,
- s->width, s->height, s->linesize,
- s->h_edge_pos >> lowres, s->v_edge_pos >> lowres,
- block_s, block_s, pix_op,
- s->mv[dir][i][0], s->mv[dir][i][1]);
- mx += s->mv[dir][i][0];
- my += s->mv[dir][i][1];
- }
- if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY))
- chroma_4mv_motion_lowres(s, dest_cb, dest_cr, ref_picture, pix_op, mx, my);
- break;
- case MV_TYPE_FIELD:
- if (s->picture_structure == PICT_FRAME) {
- /* top field */
- mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
- 1, 0, s->field_select[dir][0],
- ref_picture, pix_op,
- s->mv[dir][0][0], s->mv[dir][0][1], block_s);
- /* bottom field */
- mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
- 1, 1, s->field_select[dir][1],
- ref_picture, pix_op,
- s->mv[dir][1][0], s->mv[dir][1][1], block_s);
- } else {
- if(s->picture_structure != s->field_select[dir][0] + 1 && s->pict_type != FF_B_TYPE && !s->first_field){
- ref_picture= s->current_picture_ptr->data;
- }
- mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
- 0, 0, s->field_select[dir][0],
- ref_picture, pix_op,
- s->mv[dir][0][0], s->mv[dir][0][1], 2*block_s);
- }
- break;
- case MV_TYPE_16X8:
- for(i=0; i<2; i++){
- uint8_t ** ref2picture;
- if(s->picture_structure == s->field_select[dir][i] + 1 || s->pict_type == FF_B_TYPE || s->first_field){
- ref2picture= ref_picture;
- }else{
- ref2picture= s->current_picture_ptr->data;
- }
- mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
- 0, 0, s->field_select[dir][i],
- ref2picture, pix_op,
- s->mv[dir][i][0], s->mv[dir][i][1] + 2*block_s*i, block_s);
- dest_y += 2*block_s*s->linesize;
- dest_cb+= (2*block_s>>s->chroma_y_shift)*s->uvlinesize;
- dest_cr+= (2*block_s>>s->chroma_y_shift)*s->uvlinesize;
- }
- break;
- case MV_TYPE_DMV:
- if(s->picture_structure == PICT_FRAME){
- for(i=0; i<2; i++){
- int j;
- for(j=0; j<2; j++){
- mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
- 1, j, j^i,
- ref_picture, pix_op,
- s->mv[dir][2*i + j][0], s->mv[dir][2*i + j][1], block_s);
- }
- pix_op = s->dsp.avg_h264_chroma_pixels_tab;
- }
- }else{
- for(i=0; i<2; i++){
- mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
- 0, 0, s->picture_structure != i+1,
- ref_picture, pix_op,
- s->mv[dir][2*i][0],s->mv[dir][2*i][1],2*block_s);
- // after put we make avg of the same block
- pix_op = s->dsp.avg_h264_chroma_pixels_tab;
- //opposite parity is always in the same frame if this is second field
- if(!s->first_field){
- ref_picture = s->current_picture_ptr->data;
- }
- }
- }
- break;
- default: assert(0);
- }
- }
- /* put block[] to dest[] */
- static inline void put_dct(MpegEncContext *s,
- DCTELEM *block, int i, uint8_t *dest, int line_size, int qscale)
- {
- s->dct_unquantize_intra(s, block, i, qscale);
- s->dsp.idct_put (dest, line_size, block);
- }
- /* add block[] to dest[] */
- static inline void add_dct(MpegEncContext *s,
- DCTELEM *block, int i, uint8_t *dest, int line_size)
- {
- if (s->block_last_index[i] >= 0) {
- s->dsp.idct_add (dest, line_size, block);
- }
- }
- /*
- static inline void add_dequant_dct(MpegEncContext *s,
- DCTELEM *block, int i, uint8_t *dest, int line_size, int qscale)
- {
- if (s->block_last_index[i] >= 0) {
- s->dct_unquantize_inter(s, block, i, qscale);
- s->dsp.idct_add (dest, line_size, block);
- }
- }
- */
- /**
- * cleans dc, ac, coded_block for the current non intra MB
- */
- void ff_clean_intra_table_entries(MpegEncContext *s)
- {
- int wrap = s->b8_stride;
- int xy = s->block_index[0];
- s->dc_val[0][xy ] =
- s->dc_val[0][xy + 1 ] =
- s->dc_val[0][xy + wrap] =
- s->dc_val[0][xy + 1 + wrap] = 1024;
- /* ac pred */
- memset(s->ac_val[0][xy ], 0, 32 * sizeof(int16_t));
- memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(int16_t));
- if (s->msmpeg4_version>=3) {
- s->coded_block[xy ] =
- s->coded_block[xy + 1 ] =
- s->coded_block[xy + wrap] =
- s->coded_block[xy + 1 + wrap] = 0;
- }
- /* chroma */
- wrap = s->mb_stride;
- xy = s->mb_x + s->mb_y * wrap;
- s->dc_val[1][xy] =
- s->dc_val[2][xy] = 1024;
- /* ac pred */
- memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t));
- memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t));
- s->mbintra_table[xy]= 0;
- }
- /* generic function called after a macroblock has been parsed by the
- decoder or after it has been encoded by the encoder.
- Important variables used:
- s->mb_intra : true if intra macroblock
- s->mv_dir : motion vector direction
- s->mv_type : motion vector type
- s->mv : motion vector
- s->interlaced_dct : true if interlaced dct used (mpeg2)
- */
- static av_always_inline
- void MPV_decode_mb_internal(MpegEncContext *s, DCTELEM block[12][64],
- int lowres_flag, int is_mpeg12)
- {
- int mb_x, mb_y;
- const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
- #ifdef CONFIG_XVMC
- if(s->avctx->xvmc_acceleration){
- XVMC_decode_mb(s);//xvmc uses pblocks
- return;
- }
- #endif
- mb_x = s->mb_x;
- mb_y = s->mb_y;
- if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
- /* save DCT coefficients */
- int i,j;
- DCTELEM *dct = &s->current_picture.dct_coeff[mb_xy*64*6];
- for(i=0; i<6; i++)
- for(j=0; j<64; j++)
- *dct++ = block[i][s->dsp.idct_permutation[j]];
- }
- s->current_picture.qscale_table[mb_xy]= s->qscale;
- /* update DC predictors for P macroblocks */
- if (!s->mb_intra) {
- if (!is_mpeg12 && (s->h263_pred || s->h263_aic)) {
- if(s->mbintra_table[mb_xy])
- ff_clean_intra_table_entries(s);
- } else {
- s->last_dc[0] =
- s->last_dc[1] =
- s->last_dc[2] = 128 << s->intra_dc_precision;
- }
- }
- else if (!is_mpeg12 && (s->h263_pred || s->h263_aic))
- s->mbintra_table[mb_xy]=1;
- if ((s->flags&CODEC_FLAG_PSNR) || !(s->encoding && (s->intra_only || s->pict_type==FF_B_TYPE) && s->avctx->mb_decision != FF_MB_DECISION_RD)) { //FIXME precalc
- uint8_t *dest_y, *dest_cb, *dest_cr;
- int dct_linesize, dct_offset;
- op_pixels_func (*op_pix)[4];
- qpel_mc_func (*op_qpix)[16];
- const int linesize= s->current_picture.linesize[0]; //not s->linesize as this would be wrong for field pics
- const int uvlinesize= s->current_picture.linesize[1];
- const int readable= s->pict_type != FF_B_TYPE || s->encoding || s->avctx->draw_horiz_band || lowres_flag;
- const int block_size= lowres_flag ? 8>>s->avctx->lowres : 8;
- /* avoid copy if macroblock skipped in last frame too */
- /* skip only during decoding as we might trash the buffers during encoding a bit */
- if(!s->encoding){
- uint8_t *mbskip_ptr = &s->mbskip_table[mb_xy];
- const int age= s->current_picture.age;
- assert(age);
- if (s->mb_skipped) {
- s->mb_skipped= 0;
- assert(s->pict_type!=FF_I_TYPE);
- (*mbskip_ptr) ++; /* indicate that this time we skipped it */
- if(*mbskip_ptr >99) *mbskip_ptr= 99;
- /* if previous was skipped too, then nothing to do ! */
- if (*mbskip_ptr >= age && s->current_picture.reference){
- return;
- }
- } else if(!s->current_picture.reference){
- (*mbskip_ptr) ++; /* increase counter so the age can be compared cleanly */
- if(*mbskip_ptr >99) *mbskip_ptr= 99;
- } else{
- *mbskip_ptr = 0; /* not skipped */
- }
- }
- dct_linesize = linesize << s->interlaced_dct;
- dct_offset =(s->interlaced_dct)? linesize : linesize*block_size;
- if(readable){
- dest_y= s->dest[0];
- dest_cb= s->dest[1];
- dest_cr= s->dest[2];
- }else{
- dest_y = s->b_scratchpad;
- dest_cb= s->b_scratchpad+16*linesize;
- dest_cr= s->b_scratchpad+32*linesize;
- }
- if (!s->mb_intra)
- {
- /* motion handling */
- /* decoding or more than one mb_type (MC was already done otherwise) */
- if(!s->encoding)
- {
- if(lowres_flag)
- {
- h264_chroma_mc_func *op_pix = s->dsp.put_h264_chroma_pixels_tab;
- if (s->mv_dir & MV_DIR_FORWARD) {
- MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix);
- op_pix = s->dsp.avg_h264_chroma_pixels_tab;
- }
- if (s->mv_dir & MV_DIR_BACKWARD) {
- MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix);
- }
- }
- else
- {
- op_qpix= s->me.qpel_put;
- if ((!s->no_rounding) || s->pict_type==FF_B_TYPE){
- op_pix = s->dsp.put_pixels_tab;
- }else{
- op_pix = s->dsp.put_no_rnd_pixels_tab;
- }
- if (s->mv_dir & MV_DIR_FORWARD) {
- MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix, op_qpix);
- op_pix = s->dsp.avg_pixels_tab;
- op_qpix= s->me.qpel_avg;
- }
- if (s->mv_dir & MV_DIR_BACKWARD) {
- MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix, op_qpix);
- }
- }
- }
- /* skip dequant / idct if we are really late ;) */
- if(s->hurry_up>1) goto skip_idct;
- if(s->avctx->skip_idct){
- if( (s->avctx->skip_idct >= AVDISCARD_NONREF && s->pict_type == FF_B_TYPE)
- ||(s->avctx->skip_idct >= AVDISCARD_NONKEY && s->pict_type != FF_I_TYPE)
- || s->avctx->skip_idct >= AVDISCARD_ALL)
- goto skip_idct;
- }
- /* add dct residue */
- /*if(s->encoding
- ||
- !( s->h263_msmpeg4
- ||
- s->codec_id==CODEC_ID_MPEG1VIDEO
- ||
- s->codec_id==CODEC_ID_MPEG2VIDEO
- ||
- (s->codec_id==CODEC_ID_MPEG4 && !s->mpeg_quant)))
- {
- add_dequant_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
- add_dequant_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
- add_dequant_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
- add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
- if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
- if (s->chroma_y_shift){
- add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
- add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
- }else{
- dct_linesize >>= 1;
- dct_offset >>=1;
- add_dequant_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
- add_dequant_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
- add_dequant_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
- add_dequant_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
- }
- }
- }
- else*/ if(is_mpeg12 || (s->codec_id != CODEC_ID_WMV2))
- {
- add_dct(s, block[0], 0, dest_y , dct_linesize);
- add_dct(s, block[1], 1, dest_y + block_size, dct_linesize);
- add_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize);
- add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
- if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY))
- {
- if(s->chroma_y_shift)
- {//Chroma420
- add_dct(s, block[4], 4, dest_cb, uvlinesize);
- add_dct(s, block[5], 5, dest_cr, uvlinesize);
- }
- else
- {
- //chroma422
- dct_linesize = uvlinesize << s->interlaced_dct;
- dct_offset =(s->interlaced_dct)? uvlinesize : uvlinesize*8;
- add_dct(s, block[4], 4, dest_cb, dct_linesize);
- add_dct(s, block[5], 5, dest_cr, dct_linesize);
- add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize);
- add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize);
- if(!s->chroma_x_shift){//Chroma444
- add_dct(s, block[8], 8, dest_cb+8, dct_linesize);
- add_dct(s, block[9], 9, dest_cr+8, dct_linesize);
- add_dct(s, block[10], 10, dest_cb+8+dct_offset, dct_linesize);
- add_dct(s, block[11], 11, dest_cr+8+dct_offset, dct_linesize);
- }
- }
- }//fi gray
- }
- /*else if (ENABLE_WMV2)
- {
- ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr);
- }*/
- }
- else
- {
- /* dct only in intra block */
- if(s->encoding || !(s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO)){
- put_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
- put_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
- put_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
- put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
- if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
- if(s->chroma_y_shift){
- put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
- put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
- }else{
- dct_offset >>=1;
- dct_linesize >>=1;
- put_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale);
- put_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale);
- put_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale);
- put_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale);
- }
- }
- }else{
- s->dsp.idct_put(dest_y , dct_linesize, block[0]);
- s->dsp.idct_put(dest_y + block_size, dct_linesize, block[1]);
- s->dsp.idct_put(dest_y + dct_offset , dct_linesize, block[2]);
- s->dsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
- if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
- if(s->chroma_y_shift){
- s->dsp.idct_put(dest_cb, uvlinesize, block[4]);
- s->dsp.idct_put(dest_cr, uvlinesize, block[5]);
- }else{
- dct_linesize = uvlinesize << s->interlaced_dct;
- dct_offset =(s->interlaced_dct)? uvlinesize : uvlinesize*8;
- s->dsp.idct_put(dest_cb, dct_linesize, block[4]);
- s->dsp.idct_put(dest_cr, dct_linesize, block[5]);
- s->dsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
- s->dsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
- if(!s->chroma_x_shift){//Chroma444
- s->dsp.idct_put(dest_cb + 8, dct_linesize, block[8]);
- s->dsp.idct_put(dest_cr + 8, dct_linesize, block[9]);
- s->dsp.idct_put(dest_cb + 8 + dct_offset, dct_linesize, block[10]);
- s->dsp.idct_put(dest_cr + 8 + dct_offset, dct_linesize, block[11]);
- }
- }
- }//gray
- }
- }
- skip_idct:
- if(!readable){
- s->dsp.put_pixels_tab[0][0](s->dest[0], dest_y , linesize,16);
- s->dsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift);
- s->dsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[2], dest_cr, uvlinesize,16 >> s->chroma_y_shift);
- }
- }
- }
- void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]){
- #ifndef CONFIG_SMALL
- if(s->out_format == FMT_MPEG1) {
- if(s->avctx->lowres) MPV_decode_mb_internal(s, block, 1, 1);
- else MPV_decode_mb_internal(s, block, 0, 1);
- } else
- #endif
- if(s->avctx->lowres) MPV_decode_mb_internal(s, block, 1, 0);
- else MPV_decode_mb_internal(s, block, 0, 0);
- }
- /**
- *
- * @param h is the normal height, this will be reduced automatically if needed for the last row
- */
- void ff_draw_horiz_band(MpegEncContext *s, int y, int h){
- if (s->avctx->draw_horiz_band) {
- AVFrame *src;
- int offset[4];
- if(s->picture_structure != PICT_FRAME){
- h <<= 1;
- y <<= 1;
- if(s->first_field && !(s->avctx->slice_flags&SLICE_FLAG_ALLOW_FIELD)) return;
- }
- h= FFMIN(h, s->avctx->height - y);
- if(s->pict_type==FF_B_TYPE || s->low_delay || (s->avctx->slice_flags&SLICE_FLAG_CODED_ORDER))
- src= (AVFrame*)s->current_picture_ptr;
- else if(s->last_picture_ptr)
- src= (AVFrame*)s->last_picture_ptr;
- else
- return;
- if(s->pict_type==FF_B_TYPE && s->picture_structure == PICT_FRAME && s->out_format != FMT_H264){
- offset[0]=
- offset[1]=
- offset[2]=
- offset[3]= 0;
- }else{
- offset[0]= y * s->linesize;
- offset[1]=
- offset[2]= (y >> s->chroma_y_shift) * s->uvlinesize;
- offset[3]= 0;
- }
- emms_c();
- s->avctx->draw_horiz_band(s->avctx, src, offset,
- y, s->picture_structure, h);
- }
- }
- void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
- const int linesize= s->current_picture.linesize[0]; //not s->linesize as this would be wrong for field pics
- const int uvlinesize= s->current_picture.linesize[1];
- const int mb_size= 4 - s->avctx->lowres;
- s->block_index[0]= s->b8_stride*(s->mb_y*2 ) - 2 + s->mb_x*2;
- s->block_index[1]= s->b8_stride*(s->mb_y*2 ) - 1 + s->mb_x*2;
- s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) - 2 + s->mb_x*2;
- s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
- s->block_index[4]= s->mb_stride*(s->mb_y + 1) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
- s->block_index[5]= s->mb_stride*(s->mb_y + s->mb_height + 2) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
- //block_index is not used by mpeg2, so it is not affected by chroma_format
- s->dest[0] = s->current_picture.data[0] + ((s->mb_x - 1) << mb_size);
- s->dest[1] = s->current_picture.data[1] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
- s->dest[2] = s->current_picture.data[2] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
- if(!(s->pict_type==FF_B_TYPE && s->avctx->draw_horiz_band && s->picture_structure==PICT_FRAME))
- {
- s->dest[0] += s->mb_y * linesize << mb_size;
- s->dest[1] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
- s->dest[2] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
- }
- }
- void ff_mpeg_flush(AVCodecContext *avctx){
- int i;
- MpegEncContext *s = avctx->priv_data;
- if(s==NULL || s->picture==NULL)
- return;
- for(i=0; i<MAX_PICTURE_COUNT; i++){
- if(s->picture[i].data[0] && ( s->picture[i].type == FF_BUFFER_TYPE_INTERNAL
- || s->picture[i].type == FF_BUFFER_TYPE_USER))
- avctx->release_buffer(avctx, (AVFrame*)&s->picture[i]);
- }
- s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
- s->mb_x= s->mb_y= 0;
- s->parse_context.state= -1;
- s->parse_context.frame_start_found= 0;
- s->parse_context.overread= 0;
- s->parse_context.overread_index= 0;
- s->parse_context.index= 0;
- s->parse_context.last_index= 0;
- s->bitstream_buffer_size=0;
- s->pp_time=0;
- }
- static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
- DCTELEM *block, int n, int qscale)
- {
- int i, level, nCoeffs;
- const uint16_t *quant_matrix;
- nCoeffs= s->block_last_index[n];
- if (n < 4)
- block[0] = block[0] * s->y_dc_scale;
- else
- block[0] = block[0] * s->c_dc_scale;
- /* XXX: only mpeg1 */
- quant_matrix = s->intra_matrix;
- for(i=1;i<=nCoeffs;i++) {
- int j= s->intra_scantable.permutated[i];
- level = block[j];
- if (level) {
- if (level < 0) {
- level = -level;
- level = (int)(level * qscale * quant_matrix[j]) >> 3;
- level = (level - 1) | 1;
- level = -level;
- } else {
- level = (int)(level * qscale * quant_matrix[j]) >> 3;
- level = (level - 1) | 1;
- }
- block[j] = level;
- }
- }
- }
- static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
- DCTELEM *block, int n, int qscale)
- {
- int i, level, nCoeffs;
- const uint16_t *quant_matrix;
- nCoeffs= s->block_last_index[n];
- quant_matrix = s->inter_matrix;
- for(i=0; i<=nCoeffs; i++) {
- int j= s->intra_scantable.permutated[i];
- level = block[j];
- if (level) {
- if (level < 0) {
- level = -level;
- level = (((level << 1) + 1) * qscale *
- ((int) (quant_matrix[j]))) >> 4;
- level = (level - 1) | 1;
- level = -level;
- } else {
- level = (((level << 1) + 1) * qscale *
- ((int) (quant_matrix[j]))) >> 4;
- level = (level - 1) | 1;
- }
- block[j] = level;
- }
- }
- }
- static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
- DCTELEM *block, int n, int qscale)
- {
- int i, level, nCoeffs;
- const uint16_t *quant_matrix;
- if(s->alternate_scan) nCoeffs= 63;
- else nCoeffs= s->block_last_index[n];
- if (n < 4)
- block[0] = block[0] * s->y_dc_scale;
- else
- block[0] = block[0] * s->c_dc_scale;
- quant_matrix = s->intra_matrix;
- for(i=1;i<=nCoeffs;i++) {
- int j= s->intra_scantable.permutated[i];
- level = block[j];
- if (level) {
- if (level < 0) {
- level = -level;
- level = (int)(level * qscale * quant_matrix[j]) >> 3;
- level = -level;
- } else {
- level = (int)(level * qscale * quant_matrix[j]) >> 3;
- }
- block[j] = level;
- }
- }
- }
- static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
- DCTELEM *block, int n, int qscale)
- {
- int i, level, nCoeffs;
- const uint16_t *quant_matrix;
- int sum=-1;
- if(s->alternate_scan) nCoeffs= 63;
- else nCoeffs= s->block_last_index[n];
- if (n < 4)
- block[0] = block[0] * s->y_dc_scale;
- else
- block[0] = block[0] * s->c_dc_scale;
- quant_matrix = s->intra_matrix;
- for(i=1;i<=nCoeffs;i++) {
- int j= s->intra_scantable.permutated[i];
- level = block[j];
- if (level) {
- if (level < 0) {
- level = -level;
- level = (int)(level * qscale * quant_matrix[j]) >> 3;
- level = -level;
- } else {
- level = (int)(level * qscale * quant_matrix[j]) >> 3;
- }
- block[j] = level;
- sum+=level;
- }
- }
- block[63]^=sum&1;
- }
- static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
- DCTELEM *block, int n, int qscale)
- {
- int i, level, nCoeffs;
- const uint16_t *quant_matrix;
- int sum=-1;
- if(s->alternate_scan) nCoeffs= 63;
- else nCoeffs= s->block_last_index[n];
- quant_matrix = s->inter_matrix;
- for(i=0; i<=nCoeffs; i++) {
- int j= s->intra_scantable.permutated[i];
- level = block[j];
- if (level) {
- if (level < 0) {
- level = -level;
- level = (((level << 1) + 1) * qscale *
- ((int) (quant_matrix[j]))) >> 4;
- level = -level;
- } else {
- level = (((level << 1) + 1) * qscale *
- ((int) (quant_matrix[j]))) >> 4;
- }
- block[j] = level;
- sum+=level;
- }
- }
- block[63]^=sum&1;
- }
- static void dct_unquantize_h263_intra_c(MpegEncContext *s,
- DCTELEM *block, int n, int qscale)
- {
- int i, level, qmul, qadd;
- int nCoeffs;
- assert(s->block_last_index[n]>=0);
- qmul = qscale << 1;
- if (!s->h263_aic) {
- if (n < 4)
- block[0] = block[0] * s->y_dc_scale;
- else
- block[0] = block[0] * s->c_dc_scale;
- qadd = (qscale - 1) | 1;
- }else{
- qadd = 0;
- }
- if(s->ac_pred)
- nCoeffs=63;
- else
- nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
- for(i=1; i<=nCoeffs; i++) {
- level = block[i];
- if (level) {
- if (level < 0) {
- level = level * qmul - qadd;
- } else {
- level = level * qmul + qadd;
- }
- block[i] = level;
- }
- }
- }
- static void dct_unquantize_h263_inter_c(MpegEncContext *s,
- DCTELEM *block, int n, int qscale)
- {
- int i, level, qmul, qadd;
- int nCoeffs;
- assert(s->block_last_index[n]>=0);
- qadd = (qscale - 1) | 1;
- qmul = qscale << 1;
- nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
- for(i=0; i<=nCoeffs; i++) {
- level = block[i];
- if (level) {
- if (level < 0) {
- level = level * qmul - qadd;
- } else {
- level = level * qmul + qadd;
- }
- block[i] = level;
- }
- }
- }
- /**
- * set qscale and update qscale dependent variables.
- */
- void ff_set_qscale(MpegEncContext * s, int qscale)
- {
- if (qscale < 1)
- qscale = 1;
- else if (qscale > 31)
- qscale = 31;
- s->qscale = qscale;
- s->chroma_qscale= s->chroma_qscale_table[qscale];
- s->y_dc_scale= s->y_dc_scale_table[ qscale ];
- s->c_dc_scale= s->c_dc_scale_table[ s->chroma_qscale ];
- }