libmpcodecs/vd_ffmpeg.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <assert.h>
   4 #include <time.h>
   5
   6 #include "config.h"
   7 #include "mp_msg.h"
   8 #include "help_mp.h"
   9 #include "av_opts.h"
  10
  11 #include "libavutil/common.h"
  12 #include "libavutil/intreadwrite.h"
  13 #include "mpbswap.h"
  14
  15 #include "vd_internal.h"
  16
  17 static vd_info_t info = {
  18         "FFmpeg's libavcodec codec family",
  19         "ffmpeg",
  20         "A'rpi",
  21         "A'rpi, Michael, Alex",
  22         "native codecs"
  23 };
  24
  25 LIBVD_EXTERN(ffmpeg)
  26
  27 #include "libavcodec/avcodec.h"
  28
  29 #if CONFIG_XVMC
  30 #include "xvmc_render.h"
  31 #endif
  32
  33 int avcodec_initialized=0;
  34
  35 typedef struct {
  36     AVCodecContext *avctx;
  37     AVFrame *pic;
  38     enum PixelFormat pix_fmt;
  39     int do_slices;
  40     int do_dr1;
  41     int vo_initialized;
  42     int best_csp;
  43     int b_age;
  44     int ip_age[2];
  45     int qp_stat[32];
  46     double qp_sum;
  47     double inv_qp_sum;
  48     int ip_count;
  49     int b_count;
  50     AVRational last_sample_aspect_ratio;
  51 } vd_ffmpeg_ctx;
  52
  53 #include "m_option.h"
  54
  55 static int get_buffer(AVCodecContext *avctx, AVFrame *pic);
  56 static void release_buffer(AVCodecContext *avctx, AVFrame *pic);
  57
  58 #if CONFIG_XVMC
  59 static enum PixelFormat get_format(struct AVCodecContext * avctx,
  60                                    const enum PixelFormat * pix_fmt);
  61 static int mc_get_buffer(AVCodecContext *avctx, AVFrame *pic);
  62 static void mc_release_buffer(AVCodecContext *avctx, AVFrame *pic);
  63 static void mc_render_slice(struct AVCodecContext *s,
  64                         AVFrame *src, int offset[4],
  65                         int y, int type, int height);
  66 #endif
  67
  68 static int lavc_param_workaround_bugs= FF_BUG_AUTODETECT;
  69 static int lavc_param_error_resilience=2;
  70 static int lavc_param_error_concealment=3;
  71 static int lavc_param_gray=0;
  72 static int lavc_param_vstats=0;
  73 static int lavc_param_idct_algo=0;
  74 static int lavc_param_debug=0;
  75 static int lavc_param_vismv=0;
  76 static int lavc_param_skip_top=0;
  77 static int lavc_param_skip_bottom=0;
  78 static int lavc_param_fast=0;
  79 static int lavc_param_lowres=0;
  80 static char *lavc_param_lowres_str=NULL;
  81 static char *lavc_param_skip_loop_filter_str = NULL;
  82 static char *lavc_param_skip_idct_str = NULL;
  83 static char *lavc_param_skip_frame_str = NULL;
  84 static int lavc_param_threads=1;
  85 static int lavc_param_bitexact=0;
  86 static char *lavc_avopt = NULL;
  87
  88 const m_option_t lavc_decode_opts_conf[]={
  89         {"bug", &lavc_param_workaround_bugs, CONF_TYPE_INT, CONF_RANGE, -1, 999999, NULL},
  90         {"er", &lavc_param_error_resilience, CONF_TYPE_INT, CONF_RANGE, 0, 99, NULL},
  91         {"gray", &lavc_param_gray, CONF_TYPE_FLAG, 0, 0, CODEC_FLAG_PART, NULL},
  92         {"idct", &lavc_param_idct_algo, CONF_TYPE_INT, CONF_RANGE, 0, 99, NULL},
  93         {"ec", &lavc_param_error_concealment, CONF_TYPE_INT, CONF_RANGE, 0, 99, NULL},
  94         {"vstats", &lavc_param_vstats, CONF_TYPE_FLAG, 0, 0, 1, NULL},
  95         {"debug", &lavc_param_debug, CONF_TYPE_INT, CONF_RANGE, 0, 9999999, NULL},
  96         {"vismv", &lavc_param_vismv, CONF_TYPE_INT, CONF_RANGE, 0, 9999999, NULL},
  97         {"st", &lavc_param_skip_top, CONF_TYPE_INT, CONF_RANGE, 0, 999, NULL},
  98         {"sb", &lavc_param_skip_bottom, CONF_TYPE_INT, CONF_RANGE, 0, 999, NULL},
  99         {"fast", &lavc_param_fast, CONF_TYPE_FLAG, 0, 0, CODEC_FLAG2_FAST, NULL},
 100         {"lowres", &lavc_param_lowres_str, CONF_TYPE_STRING, 0, 0, 0, NULL},
 101         {"skiploopfilter", &lavc_param_skip_loop_filter_str, CONF_TYPE_STRING, 0, 0, 0, NULL},
 102         {"skipidct", &lavc_param_skip_idct_str, CONF_TYPE_STRING, 0, 0, 0, NULL},
 103         {"skipframe", &lavc_param_skip_frame_str, CONF_TYPE_STRING, 0, 0, 0, NULL},
 104         {"threads", &lavc_param_threads, CONF_TYPE_INT, CONF_RANGE, 1, 8, NULL},
 105         {"bitexact", &lavc_param_bitexact, CONF_TYPE_FLAG, 0, 0, CODEC_FLAG_BITEXACT, NULL},
 106         {"o", &lavc_avopt, CONF_TYPE_STRING, 0, 0, 0, NULL},
 107         {NULL, NULL, 0, 0, 0, 0, NULL}
 108 };
 109
 110 static enum AVDiscard str2AVDiscard(char *str) {
 111     if (!str)                               return AVDISCARD_DEFAULT;
 112     if (strcasecmp(str, "none"   ) == 0)    return AVDISCARD_NONE;
 113     if (strcasecmp(str, "default") == 0)    return AVDISCARD_DEFAULT;
 114     if (strcasecmp(str, "nonref" ) == 0)    return AVDISCARD_NONREF;
 115     if (strcasecmp(str, "bidir"  ) == 0)    return AVDISCARD_BIDIR;
 116     if (strcasecmp(str, "nonkey" ) == 0)    return AVDISCARD_NONKEY;
 117     if (strcasecmp(str, "all"    ) == 0)    return AVDISCARD_ALL;
 118     mp_msg(MSGT_DECVIDEO, MSGL_ERR, "Unknown discard value %s\n", str);
 119     return AVDISCARD_DEFAULT;
 120 }
 121
 122 // to set/get/query special features/parameters
 123 static int control(sh_video_t *sh,int cmd,void* arg,...){
 124     vd_ffmpeg_ctx *ctx = sh->context;
 125     AVCodecContext *avctx = ctx->avctx;
 126     switch(cmd){
 127     case VDCTRL_QUERY_FORMAT:
 128         {
 129             int format =(*((int*)arg));
 130             if( format == ctx->best_csp ) return CONTROL_TRUE;//supported
 131         // possible conversions:
 132             switch( format ){
 133         case IMGFMT_YV12:
 134         case IMGFMT_IYUV:
 135         case IMGFMT_I420:
 136             // "converted" using pointer/stride modification
 137             if(avctx->pix_fmt==PIX_FMT_YUV420P) return CONTROL_TRUE;// u/v swap
 138             if(avctx->pix_fmt==PIX_FMT_YUV422P && !ctx->do_dr1) return CONTROL_TRUE;// half stride
 139             break;
 140 #if CONFIG_XVMC
 141         case IMGFMT_XVMC_IDCT_MPEG2:
 142         case IMGFMT_XVMC_MOCO_MPEG2:
 143             if(avctx->pix_fmt==PIX_FMT_XVMC_MPEG2_IDCT) return CONTROL_TRUE;
 144 #endif
 145         }
 146         return CONTROL_FALSE;
 147         }
 148     break;
 149     case VDCTRL_RESYNC_STREAM:
 150         avcodec_flush_buffers(avctx);
 151         return CONTROL_TRUE;
 152     case VDCTRL_QUERY_UNSEEN_FRAMES:
 153         return avctx->has_b_frames + 10;
 154     }
 155     return CONTROL_UNKNOWN;
 156 }
 157
 158 void mp_msp_av_log_callback(void* ptr, int level, const char* fmt, va_list vl)
 159 {
 160     static int print_prefix=1;
 161     AVClass* avc= ptr ? *(AVClass**)ptr : NULL;
 162     int type= MSGT_FIXME;
 163     int mp_level;
 164     char buf[256];
 165
 166     switch(level){
 167     case AV_LOG_DEBUG:  mp_level= MSGL_V   ; break;
 168     case AV_LOG_INFO :  mp_level= MSGL_INFO; break;
 169     case AV_LOG_ERROR:  mp_level= MSGL_ERR ; break;
 170     default          :  mp_level= MSGL_ERR ; break;
 171     }
 172
 173     if (!mp_msg_test(type, mp_level)) return;
 174
 175     if(ptr){
 176         if(!strcmp(avc->class_name, "AVCodecContext")){
 177             AVCodecContext * s= ptr;
 178             if(s->codec){
 179                 if(s->codec->type == CODEC_TYPE_AUDIO){
 180                     if(s->codec->decode)
 181                         type= MSGT_DECAUDIO;
 182                 }else if(s->codec->type == CODEC_TYPE_VIDEO){
 183                     if(s->codec->decode)
 184                         type= MSGT_DECVIDEO;
 185                 }
 186                 //FIXME subtitles, encoders (what msgt for them? there is no appropriate ...)
 187             }
 188         }else if(!strcmp(avc->class_name, "AVFormatContext")){
 189 #if 0 //needs libavformat include FIXME iam too lazy to do this cleanly,probably the whole should be moved out of this file ...
 190             AVFormatContext * s= ptr;
 191             if(s->iformat)
 192                 type= MSGT_DEMUXER;
 193             else if(s->oformat)
 194                 type= MSGT_MUXER;
 195 #endif
 196         }
 197     }
 198
 199     if(print_prefix && avc) {
 200         mp_msg(type, mp_level, "[%s @ %p]", avc->item_name(ptr), avc);
 201     }
 202
 203     print_prefix= strchr(fmt, '\n') != NULL;
 204     vsnprintf(buf, sizeof(buf), fmt, vl);
 205     mp_msg(type, mp_level, buf);
 206 }
 207
 208 // init driver
 209 static int init(sh_video_t *sh){
 210     AVCodecContext *avctx;
 211     vd_ffmpeg_ctx *ctx;
 212     AVCodec *lavc_codec;
 213     int lowres_w=0;
 214     int do_vis_debug= lavc_param_vismv || (lavc_param_debug&(FF_DEBUG_VIS_MB_TYPE|FF_DEBUG_VIS_QP));
 215
 216     if(!avcodec_initialized){
 217       avcodec_init();
 218       avcodec_register_all();
 219       avcodec_initialized=1;
 220       av_log_set_callback(mp_msp_av_log_callback);
 221     }
 222
 223     ctx = sh->context = malloc(sizeof(vd_ffmpeg_ctx));
 224     if (!ctx)
 225         return 0;
 226     memset(ctx, 0, sizeof(vd_ffmpeg_ctx));
 227
 228     lavc_codec = (AVCodec *)avcodec_find_decoder_by_name(sh->codec->dll);
 229     if(!lavc_codec){
 230         mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_MissingLAVCcodec,sh->codec->dll);
 231         uninit(sh);
 232         return 0;
 233     }
 234
 235     if(vd_use_slices && (lavc_codec->capabilities&CODEC_CAP_DRAW_HORIZ_BAND) && !do_vis_debug)
 236         ctx->do_slices=1;
 237
 238     if(lavc_codec->capabilities&CODEC_CAP_DR1 && !do_vis_debug && lavc_codec->id != CODEC_ID_H264 && lavc_codec->id != CODEC_ID_INTERPLAY_VIDEO && lavc_codec->id != CODEC_ID_ROQ)
 239         ctx->do_dr1=1;
 240     ctx->b_age= ctx->ip_age[0]= ctx->ip_age[1]= 256*256*256*64;
 241     ctx->ip_count= ctx->b_count= 0;
 242
 243     ctx->pic = avcodec_alloc_frame();
 244     ctx->avctx = avcodec_alloc_context();
 245     avctx = ctx->avctx;
 246
 247 #if CONFIG_XVMC
 248
 249     if(lavc_codec->capabilities & CODEC_CAP_HWACCEL){
 250         mp_msg(MSGT_DECVIDEO, MSGL_INFO, MSGTR_MPCODECS_XVMCAcceleratedCodec);
 251         assert(ctx->do_dr1);//these are must to!
 252         assert(ctx->do_slices); //it is (vo_)ffmpeg bug if this fails
 253         avctx->flags|= CODEC_FLAG_EMU_EDGE;//do i need that??!!
 254         avctx->get_format= get_format;//for now only this decoder will use it
 255         avctx->get_buffer= mc_get_buffer;
 256         avctx->release_buffer= mc_release_buffer;
 257         avctx->draw_horiz_band = mc_render_slice;
 258         avctx->slice_flags=SLICE_FLAG_CODED_ORDER|SLICE_FLAG_ALLOW_FIELD;
 259     }else
 260 #endif /* CONFIG_XVMC */
 261     if(ctx->do_dr1){
 262         avctx->flags|= CODEC_FLAG_EMU_EDGE;
 263         avctx->get_buffer= get_buffer;
 264         avctx->release_buffer= release_buffer;
 265         avctx->reget_buffer= get_buffer;
 266     }
 267
 268     avctx->flags|= CODEC_FLAG_NOT_TRUNCATED;
 269     avctx->flags|= lavc_param_bitexact;
 270
 271     avctx->width = sh->disp_w;
 272     avctx->height= sh->disp_h;
 273     avctx->workaround_bugs= lavc_param_workaround_bugs;
 274     avctx->error_recognition= lavc_param_error_resilience;
 275     if(lavc_param_gray) avctx->flags|= CODEC_FLAG_GRAY;
 276     avctx->flags2|= lavc_param_fast;
 277     avctx->codec_tag= sh->format;
 278     avctx->stream_codec_tag= sh->video.fccHandler;
 279     avctx->idct_algo= lavc_param_idct_algo;
 280     avctx->error_concealment= lavc_param_error_concealment;
 281     avctx->debug= lavc_param_debug;
 282     if (lavc_param_debug)
 283         av_log_set_level(AV_LOG_DEBUG);
 284     avctx->debug_mv= lavc_param_vismv;
 285     avctx->skip_top   = lavc_param_skip_top;
 286     avctx->skip_bottom= lavc_param_skip_bottom;
 287     if(lavc_param_lowres_str != NULL)
 288     {
 289         sscanf(lavc_param_lowres_str, "%d,%d", &lavc_param_lowres, &lowres_w);
 290         if(lavc_param_lowres < 1 || lavc_param_lowres > 16 || (lowres_w > 0 && avctx->width < lowres_w))
 291             lavc_param_lowres = 0;
 292         avctx->lowres = lavc_param_lowres;
 293     }
 294     avctx->skip_loop_filter = str2AVDiscard(lavc_param_skip_loop_filter_str);
 295     avctx->skip_idct = str2AVDiscard(lavc_param_skip_idct_str);
 296     avctx->skip_frame = str2AVDiscard(lavc_param_skip_frame_str);
 297
 298     if(lavc_avopt){
 299         if(parse_avopts(avctx, lavc_avopt) < 0){
 300             mp_msg(MSGT_DECVIDEO,MSGL_ERR, "Your options /%s/ look like gibberish to me pal\n", lavc_avopt);
 301             uninit(sh);
 302             return 0;
 303         }
 304     }
 305
 306     mp_dbg(MSGT_DECVIDEO,MSGL_DBG2,"libavcodec.size: %d x %d\n",avctx->width,avctx->height);
 307     switch (sh->format) {
 308     case mmioFOURCC('S','V','Q','3'):
 309     /* SVQ3 extradata can show up as sh->ImageDesc if demux_mov is used, or
 310        in the phony AVI header if demux_lavf is used. The first case is
 311        handled here; the second case falls through to the next section. */
 312         if (sh->ImageDesc) {
 313             avctx->extradata_size = (*(int*)sh->ImageDesc) - sizeof(int);
 314             avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 315             memcpy(avctx->extradata, ((int*)sh->ImageDesc)+1, avctx->extradata_size);
 316             break;
 317         }
 318         /* fallthrough */
 319
 320     case mmioFOURCC('A','V','R','n'):
 321     case mmioFOURCC('M','J','P','G'):
 322     /* AVRn stores huffman table in AVI header */
 323     /* Pegasus MJPEG stores it also in AVI header, but it uses the common
 324        MJPG fourcc :( */
 325         if (!sh->bih || sh->bih->biSize <= sizeof(BITMAPINFOHEADER))
 326             break;
 327         avctx->flags |= CODEC_FLAG_EXTERN_HUFF;
 328         avctx->extradata_size = sh->bih->biSize-sizeof(BITMAPINFOHEADER);
 329         avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 330         memcpy(avctx->extradata, sh->bih+1, avctx->extradata_size);
 331
 332 #if 0
 333         {
 334             int x;
 335             uint8_t *p = avctx->extradata;
 336
 337             for (x=0; x<avctx->extradata_size; x++)
 338                 mp_msg(MSGT_DECVIDEO, MSGL_INFO,"[%x] ", p[x]);
 339             mp_msg(MSGT_DECVIDEO, MSGL_INFO,"\n");
 340         }
 341 #endif
 342         break;
 343
 344     case mmioFOURCC('R', 'V', '1', '0'):
 345     case mmioFOURCC('R', 'V', '1', '3'):
 346     case mmioFOURCC('R', 'V', '2', '0'):
 347     case mmioFOURCC('R', 'V', '3', '0'):
 348     case mmioFOURCC('R', 'V', '4', '0'):
 349         if(sh->bih->biSize<sizeof(*sh->bih)+8){
 350             /* only 1 packet per frame & sub_id from fourcc */
 351             avctx->extradata_size= 8;
 352             avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 353             ((uint32_t*)avctx->extradata)[0] = 0;
 354             ((uint32_t*)avctx->extradata)[1] =
 355                 (sh->format == mmioFOURCC('R', 'V', '1', '3')) ? 0x10003001 : 0x10000000;
 356         } else {
 357             /* has extra slice header (demux_rm or rm->avi streamcopy) */
 358             avctx->extradata_size = sh->bih->biSize-sizeof(BITMAPINFOHEADER);
 359             avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 360             memcpy(avctx->extradata, sh->bih+1, avctx->extradata_size);
 361         }
 362         avctx->sub_id= AV_RB32(avctx->extradata+4);
 363
 364 //        printf("%X %X %d %d\n", extrahdr[0], extrahdr[1]);
 365         break;
 366
 367     default:
 368         if (!sh->bih || sh->bih->biSize <= sizeof(BITMAPINFOHEADER))
 369             break;
 370         avctx->extradata_size = sh->bih->biSize-sizeof(BITMAPINFOHEADER);
 371         avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 372         memcpy(avctx->extradata, sh->bih+1, avctx->extradata_size);
 373         break;
 374     }
 375     /* Pass palette to codec */
 376     if (sh->bih && (sh->bih->biBitCount <= 8)) {
 377         avctx->palctrl = calloc(1,sizeof(AVPaletteControl));
 378         avctx->palctrl->palette_changed = 1;
 379         if (sh->bih->biSize-sizeof(BITMAPINFOHEADER))
 380             /* Palette size in biSize */
 381             memcpy(avctx->palctrl->palette, sh->bih+1,
 382                    FFMIN(sh->bih->biSize-sizeof(BITMAPINFOHEADER), AVPALETTE_SIZE));
 383         else
 384             /* Palette size in biClrUsed */
 385             memcpy(avctx->palctrl->palette, sh->bih+1,
 386                    FFMIN(sh->bih->biClrUsed * 4, AVPALETTE_SIZE));
 387         }
 388
 389     if(sh->bih)
 390         avctx->bits_per_coded_sample= sh->bih->biBitCount;
 391
 392     if(lavc_param_threads > 1)
 393         avcodec_thread_init(avctx, lavc_param_threads);
 394     /* open it */
 395     if (avcodec_open(avctx, lavc_codec) < 0) {
 396         mp_msg(MSGT_DECVIDEO,MSGL_ERR, MSGTR_CantOpenCodec);
 397         uninit(sh);
 398         return 0;
 399     }
 400     mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: libavcodec init OK!\n");
 401     return 1; //mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_YV12);
 402 }
 403
 404 // uninit driver
 405 static void uninit(sh_video_t *sh){
 406     vd_ffmpeg_ctx *ctx = sh->context;
 407     AVCodecContext *avctx = ctx->avctx;
 408
 409     if(lavc_param_vstats){
 410         int i;
 411         for(i=1; i<32; i++){
 412             mp_msg(MSGT_DECVIDEO, MSGL_INFO,"QP: %d, count: %d\n", i, ctx->qp_stat[i]);
 413         }
 414         mp_msg(MSGT_DECVIDEO, MSGL_INFO,MSGTR_MPCODECS_ArithmeticMeanOfQP,
 415             ctx->qp_sum / avctx->coded_frame->coded_picture_number,
 416             1.0/(ctx->inv_qp_sum / avctx->coded_frame->coded_picture_number)
 417             );
 418     }
 419
 420     if (avctx) {
 421         if (avctx->codec && avcodec_close(avctx) < 0)
 422             mp_msg(MSGT_DECVIDEO,MSGL_ERR, MSGTR_CantCloseCodec);
 423
 424         av_freep(&avctx->extradata);
 425         av_freep(&avctx->palctrl);
 426         av_freep(&avctx->slice_offset);
 427     }
 428
 429     av_freep(&avctx);
 430     av_freep(&ctx->pic);
 431     if (ctx)
 432         free(ctx);
 433 }
 434
 435 static void draw_slice(struct AVCodecContext *s,
 436                         AVFrame *src, int offset[4],
 437                         int y, int type, int height){
 438     sh_video_t * sh = s->opaque;
 439     uint8_t *source[3]= {src->data[0] + offset[0], src->data[1] + offset[1], src->data[2] + offset[2]};
 440 #if 0
 441     int start=0, i;
 442     int width= s->width;
 443     int skip_stride= ((width<<lavc_param_lowres)+15)>>4;
 444     uint8_t *skip= &s->coded_frame->mbskip_table[(y>>4)*skip_stride];
 445     int threshold= s->coded_frame->age;
 446     if(s->pict_type!=B_TYPE){
 447         for(i=0; i*16<width+16; i++){
 448             if(i*16>=width || skip[i]>=threshold){
 449                 if(start==i) start++;
 450                 else{
 451                     uint8_t *src2[3]= {src[0] + start*16,
 452                                      src[1] + start*8,
 453                                      src[2] + start*8};
 454 //printf("%2d-%2d x %d\n", start, i, y);
 455                     mpcodecs_draw_slice (sh,src2, stride, (i-start)*16, height, start*16, y);
 456                     start= i+1;
 457                 }
 458             }
 459         }
 460     }else
 461 #endif
 462     if (y < sh->disp_h) {
 463         mpcodecs_draw_slice (sh, source, src->linesize, sh->disp_w, (y+height)<=sh->disp_h?height:sh->disp_h-y, 0, y);
 464     }
 465 }
 466
 467
 468 static int init_vo(sh_video_t *sh, enum PixelFormat pix_fmt){
 469     vd_ffmpeg_ctx *ctx = sh->context;
 470     AVCodecContext *avctx = ctx->avctx;
 471     float aspect= av_q2d(avctx->sample_aspect_ratio) * avctx->width / avctx->height;
 472     int width, height;
 473
 474     width = avctx->width;
 475     height = avctx->height;
 476
 477     // HACK!
 478     // if sh->ImageDesc is non-NULL, it means we decode QuickTime(tm) video.
 479     // use dimensions from BIH to avoid black borders at the right and bottom.
 480     if (sh->bih && sh->ImageDesc) {
 481         width = sh->bih->biWidth>>lavc_param_lowres;
 482         height = sh->bih->biHeight>>lavc_param_lowres;
 483     }
 484
 485      // it is possible another vo buffers to be used after vo config()
 486      // lavc reset its buffers on width/heigh change but not on aspect change!!!
 487     if (av_cmp_q(avctx->sample_aspect_ratio, ctx->last_sample_aspect_ratio) ||
 488         width != sh->disp_w  ||
 489         height != sh->disp_h ||
 490         pix_fmt != ctx->pix_fmt ||
 491         !ctx->vo_initialized)
 492     {
 493         mp_msg(MSGT_DECVIDEO, MSGL_V, "[ffmpeg] aspect_ratio: %f\n", aspect);
 494         if (sh->aspect == 0 ||
 495             av_cmp_q(avctx->sample_aspect_ratio,
 496                      ctx->last_sample_aspect_ratio))
 497             sh->aspect = aspect;
 498         ctx->last_sample_aspect_ratio = avctx->sample_aspect_ratio;
 499         sh->disp_w = width;
 500         sh->disp_h = height;
 501         ctx->pix_fmt = pix_fmt;
 502         switch(pix_fmt){
 503         // YUVJ are YUV formats that use the full Y range and not just
 504         // 16 - 235 (see colorspaces.txt).
 505         // Currently they are all treated the same way.
 506         case PIX_FMT_YUV410P: ctx->best_csp=IMGFMT_YVU9;break; //svq1
 507         case PIX_FMT_YUVJ420P:
 508         case PIX_FMT_YUV420P: ctx->best_csp=IMGFMT_YV12;break; //mpegs
 509         case PIX_FMT_YUVJ422P:
 510         case PIX_FMT_YUV422P: ctx->best_csp=IMGFMT_422P;break; //mjpeg / huffyuv
 511         case PIX_FMT_YUVJ444P:
 512         case PIX_FMT_YUV444P: ctx->best_csp=IMGFMT_444P;break; //photo jpeg
 513         case PIX_FMT_YUV411P: ctx->best_csp=IMGFMT_411P;break; //dv ntsc
 514         case PIX_FMT_YUYV422: ctx->best_csp=IMGFMT_YUY2;break; //huffyuv perhaps in the future
 515         case PIX_FMT_RGB24 :  ctx->best_csp=IMGFMT_RGB24;break; //qtrle
 516         case PIX_FMT_RGB32:   ctx->best_csp=IMGFMT_BGR32;break; //huffyuv / mjpeg
 517         case PIX_FMT_BGR24 :  ctx->best_csp=IMGFMT_BGR24;break; //8bps
 518         case PIX_FMT_RGB555:  ctx->best_csp=IMGFMT_BGR15;break; //rpza,cram
 519         case PIX_FMT_RGB565:  ctx->best_csp=IMGFMT_BGR16;break; //4xm
 520         case PIX_FMT_GRAY8:   ctx->best_csp=IMGFMT_Y800;break; // gray jpeg
 521         case PIX_FMT_PAL8:    ctx->best_csp=IMGFMT_BGR8;break; //8bps,mrle,cram
 522 #if CONFIG_XVMC
 523         case PIX_FMT_XVMC_MPEG2_MC:ctx->best_csp=IMGFMT_XVMC_MOCO_MPEG2;break;
 524         case PIX_FMT_XVMC_MPEG2_IDCT:ctx->best_csp=IMGFMT_XVMC_IDCT_MPEG2;break;
 525 #endif
 526         default:
 527             ctx->best_csp=0;
 528         }
 529         if (!mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h, ctx->best_csp))
 530                 return -1;
 531         ctx->vo_initialized = 1;
 532     }
 533     return 0;
 534 }
 535
 536 static int get_buffer(AVCodecContext *avctx, AVFrame *pic){
 537     sh_video_t * sh = avctx->opaque;
 538     vd_ffmpeg_ctx *ctx = sh->context;
 539     mp_image_t* mpi=NULL;
 540     int flags= MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE;
 541     int type= MP_IMGTYPE_IPB;
 542     int width= avctx->width;
 543     int height= avctx->height;
 544     int align=15;
 545 //printf("get_buffer %d %d %d\n", pic->reference, ctx->ip_count, ctx->b_count);
 546     if(avctx->pix_fmt == PIX_FMT_YUV410P)
 547         align=63; //yes seriously, its really needed (16x16 chroma blocks in SVQ1 -> 64x64)
 548
 549   if (pic->buffer_hints) {
 550     mp_msg(MSGT_DECVIDEO,MSGL_DBG2, "Buffer hints: %u\n", pic->buffer_hints);
 551     type = MP_IMGTYPE_TEMP;
 552     if (pic->buffer_hints & FF_BUFFER_HINTS_READABLE)
 553         flags |= MP_IMGFLAG_READABLE;
 554     if (pic->buffer_hints & FF_BUFFER_HINTS_PRESERVE) {
 555         type = MP_IMGTYPE_STATIC;
 556         flags |= MP_IMGFLAG_PRESERVE;
 557     }
 558     if (pic->buffer_hints & FF_BUFFER_HINTS_REUSABLE) {
 559         type = MP_IMGTYPE_STATIC;
 560         flags |= MP_IMGFLAG_PRESERVE;
 561     }
 562     flags|=(!avctx->hurry_up && ctx->do_slices) ?
 563             MP_IMGFLAG_DRAW_CALLBACK:0;
 564     mp_msg(MSGT_DECVIDEO,MSGL_DBG2, type == MP_IMGTYPE_STATIC ? "using STATIC\n" : "using TEMP\n");
 565   } else {
 566     if(!pic->reference){
 567         ctx->b_count++;
 568         flags|=(!avctx->hurry_up && ctx->do_slices) ?
 569                 MP_IMGFLAG_DRAW_CALLBACK:0;
 570     }else{
 571         ctx->ip_count++;
 572         flags|= MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE
 573                 | (ctx->do_slices ? MP_IMGFLAG_DRAW_CALLBACK : 0);
 574     }
 575   }
 576
 577     if(init_vo(sh,avctx->pix_fmt) < 0){
 578         avctx->release_buffer= avcodec_default_release_buffer;
 579         avctx->get_buffer= avcodec_default_get_buffer;
 580         return avctx->get_buffer(avctx, pic);
 581     }
 582
 583   if (!pic->buffer_hints) {
 584     if(ctx->b_count>1 || ctx->ip_count>2){
 585         mp_msg(MSGT_DECVIDEO, MSGL_WARN, MSGTR_MPCODECS_DRIFailure);
 586
 587         ctx->do_dr1=0; //FIXME
 588         avctx->get_buffer= avcodec_default_get_buffer;
 589         return avctx->get_buffer(avctx, pic);
 590     }
 591
 592     if(avctx->has_b_frames){
 593         type= MP_IMGTYPE_IPB;
 594     }else{
 595         type= MP_IMGTYPE_IP;
 596     }
 597     mp_msg(MSGT_DECVIDEO,MSGL_DBG2, type== MP_IMGTYPE_IPB ? "using IPB\n" : "using IP\n");
 598   }
 599
 600     mpi= mpcodecs_get_image(sh,type, flags,
 601                         (width+align)&(~align), (height+align)&(~align));
 602
 603     // ok, let's see what did we get:
 604     if(  mpi->flags&MP_IMGFLAG_DRAW_CALLBACK &&
 605        !(mpi->flags&MP_IMGFLAG_DIRECT)){
 606         // nice, filter/vo likes draw_callback :)
 607         avctx->draw_horiz_band= draw_slice;
 608     } else
 609         avctx->draw_horiz_band= NULL;
 610
 611         // Palette support: libavcodec copies palette to *data[1]
 612         if (mpi->bpp == 8)
 613                 mpi->planes[1] = av_malloc(AVPALETTE_SIZE);
 614
 615     pic->data[0]= mpi->planes[0];
 616     pic->data[1]= mpi->planes[1];
 617     pic->data[2]= mpi->planes[2];
 618
 619 #if 0
 620     assert(mpi->width >= ((width +align)&(~align)));
 621     assert(mpi->height >= ((height+align)&(~align)));
 622     assert(mpi->stride[0] >= mpi->width);
 623     if(mpi->imgfmt==IMGFMT_I420 || mpi->imgfmt==IMGFMT_YV12 || mpi->imgfmt==IMGFMT_IYUV){
 624         const int y_size= mpi->stride[0] * (mpi->h-1) + mpi->w;
 625         const int c_size= mpi->stride[1] * ((mpi->h>>1)-1) + (mpi->w>>1);
 626
 627         assert(mpi->planes[0] > mpi->planes[1] || mpi->planes[0] + y_size <= mpi->planes[1]);
 628         assert(mpi->planes[0] > mpi->planes[2] || mpi->planes[0] + y_size <= mpi->planes[2]);
 629         assert(mpi->planes[1] > mpi->planes[0] || mpi->planes[1] + c_size <= mpi->planes[0]);
 630         assert(mpi->planes[1] > mpi->planes[2] || mpi->planes[1] + c_size <= mpi->planes[2]);
 631         assert(mpi->planes[2] > mpi->planes[0] || mpi->planes[2] + c_size <= mpi->planes[0]);
 632         assert(mpi->planes[2] > mpi->planes[1] || mpi->planes[2] + c_size <= mpi->planes[1]);
 633     }
 634 #endif
 635
 636     /* Note, some (many) codecs in libavcodec must have stride1==stride2 && no changes between frames
 637      * lavc will check that and die with an error message, if its not true
 638      */
 639     pic->linesize[0]= mpi->stride[0];
 640     pic->linesize[1]= mpi->stride[1];
 641     pic->linesize[2]= mpi->stride[2];
 642
 643     pic->opaque = mpi;
 644 //printf("%X\n", (int)mpi->planes[0]);
 645 #if 0
 646 if(mpi->flags&MP_IMGFLAG_DIRECT)
 647     printf("D");
 648 else if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 649     printf("S");
 650 else
 651     printf(".");
 652 #endif
 653     if(pic->reference){
 654         pic->age= ctx->ip_age[0];
 655
 656         ctx->ip_age[0]= ctx->ip_age[1]+1;
 657         ctx->ip_age[1]= 1;
 658         ctx->b_age++;
 659     }else{
 660         pic->age= ctx->b_age;
 661
 662         ctx->ip_age[0]++;
 663         ctx->ip_age[1]++;
 664         ctx->b_age=1;
 665     }
 666     pic->type= FF_BUFFER_TYPE_USER;
 667     return 0;
 668 }
 669
 670 static void release_buffer(struct AVCodecContext *avctx, AVFrame *pic){
 671     mp_image_t* mpi= pic->opaque;
 672     sh_video_t * sh = avctx->opaque;
 673     vd_ffmpeg_ctx *ctx = sh->context;
 674     int i;
 675
 676 //printf("release buffer %d %d %d\n", mpi ? mpi->flags&MP_IMGFLAG_PRESERVE : -99, ctx->ip_count, ctx->b_count);
 677
 678   if(ctx->ip_count <= 2 && ctx->b_count<=1){
 679     if(mpi->flags&MP_IMGFLAG_PRESERVE)
 680         ctx->ip_count--;
 681     else
 682         ctx->b_count--;
 683   }
 684
 685         // Palette support: free palette buffer allocated in get_buffer
 686         if ( mpi && (mpi->bpp == 8))
 687                 av_freep(&mpi->planes[1]);
 688
 689     if(pic->type!=FF_BUFFER_TYPE_USER){
 690         avcodec_default_release_buffer(avctx, pic);
 691         return;
 692     }
 693
 694     for(i=0; i<4; i++){
 695         pic->data[i]= NULL;
 696     }
 697 //printf("R%X %X\n", pic->linesize[0], pic->data[0]);
 698 }
 699
 700 // copypaste from demux_real.c - it should match to get it working!
 701 //FIXME put into some header
 702 typedef struct dp_hdr_s {
 703     uint32_t chunks;    // number of chunks
 704     uint32_t timestamp; // timestamp from packet header
 705     uint32_t len;       // length of actual data
 706     uint32_t chunktab;  // offset to chunk offset array
 707 } dp_hdr_t;
 708
 709 void swap_palette(void *pal) {
 710     int i;
 711     uint32_t *p = pal;
 712     for (i = 0; i < AVPALETTE_COUNT; i++)
 713         p[i] = le2me_32(p[i]);
 714 }
 715
 716 // decode a frame
 717 static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
 718     int got_picture=0;
 719     int ret;
 720     vd_ffmpeg_ctx *ctx = sh->context;
 721     AVFrame *pic= ctx->pic;
 722     AVCodecContext *avctx = ctx->avctx;
 723     mp_image_t* mpi=NULL;
 724     int dr1= ctx->do_dr1;
 725
 726     if(len<=0) return NULL; // skipped frame
 727
 728 //ffmpeg interlace (mpeg2) bug have been fixed. no need of -noslices
 729     if (!dr1)
 730     avctx->draw_horiz_band=NULL;
 731     avctx->opaque=sh;
 732     if(ctx->vo_initialized && !(flags&3) && !dr1){
 733         mpi=mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, MP_IMGFLAG_PRESERVE |
 734             (ctx->do_slices?MP_IMGFLAG_DRAW_CALLBACK:0),
 735             sh->disp_w, sh->disp_h);
 736         if(mpi && mpi->flags&MP_IMGFLAG_DRAW_CALLBACK){
 737             // vd core likes slices!
 738             avctx->draw_horiz_band=draw_slice;
 739         }
 740     }
 741
 742     avctx->hurry_up=(flags&3)?((flags&2)?2:1):0;
 743
 744     mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "vd_ffmpeg data: %04x, %04x, %04x, %04x\n",
 745            ((int *)data)[0], ((int *)data)[1], ((int *)data)[2], ((int *)data)[3]);
 746     ret = avcodec_decode_video(avctx, pic,
 747              &got_picture, data, len);
 748
 749     dr1= ctx->do_dr1;
 750     if(ret<0) mp_msg(MSGT_DECVIDEO,MSGL_WARN, "Error while decoding frame!\n");
 751 //printf("repeat: %d\n", pic->repeat_pict);
 752 //-- vstats generation
 753     while(lavc_param_vstats){ // always one time loop
 754         static FILE *fvstats=NULL;
 755         char filename[20];
 756         static long long int all_len=0;
 757         static int frame_number=0;
 758         static double all_frametime=0.0;
 759         AVFrame *pic= avctx->coded_frame;
 760         double quality=0.0;
 761
 762         if(!fvstats) {
 763             time_t today2;
 764             struct tm *today;
 765             today2 = time(NULL);
 766             today = localtime(&today2);
 767             sprintf(filename, "vstats_%02d%02d%02d.log", today->tm_hour,
 768                 today->tm_min, today->tm_sec);
 769             fvstats = fopen(filename,"w");
 770             if(!fvstats) {
 771                 perror("fopen");
 772                 lavc_param_vstats=0; // disable block
 773                 break;
 774                 /*exit(1);*/
 775             }
 776         }
 777
 778         // average MB quantizer
 779         {
 780             int x, y;
 781             int w = ((avctx->width  << lavc_param_lowres)+15) >> 4;
 782             int h = ((avctx->height << lavc_param_lowres)+15) >> 4;
 783             int8_t *q = pic->qscale_table;
 784             for( y = 0; y < h; y++ ) {
 785                 for( x = 0; x < w; x++ )
 786                     quality += (double)*(q+x);
 787                 q += pic->qstride;
 788             }
 789             quality /= w * h;
 790         }
 791
 792         all_len+=len;
 793         all_frametime+=sh->frametime;
 794         fprintf(fvstats, "frame= %5d q= %2.2f f_size= %6d s_size= %8.0fkB ",
 795             ++frame_number, quality, len, (double)all_len/1024);
 796         fprintf(fvstats, "time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
 797            all_frametime, (double)(len*8)/sh->frametime/1000.0,
 798            (double)(all_len*8)/all_frametime/1000.0);
 799         switch(pic->pict_type){
 800         case FF_I_TYPE:
 801             fprintf(fvstats, "type= I\n");
 802             break;
 803         case FF_P_TYPE:
 804             fprintf(fvstats, "type= P\n");
 805             break;
 806         case FF_S_TYPE:
 807             fprintf(fvstats, "type= S\n");
 808             break;
 809         case FF_B_TYPE:
 810             fprintf(fvstats, "type= B\n");
 811             break;
 812         default:
 813             fprintf(fvstats, "type= ? (%d)\n", pic->pict_type);
 814             break;
 815         }
 816
 817         ctx->qp_stat[(int)(quality+0.5)]++;
 818         ctx->qp_sum += quality;
 819         ctx->inv_qp_sum += 1.0/(double)quality;
 820
 821         break;
 822     }
 823 //--
 824
 825     if(!got_picture) return NULL;       // skipped image
 826
 827     if(init_vo(sh,avctx->pix_fmt) < 0) return NULL;
 828
 829     if(dr1 && pic->opaque){
 830         mpi= (mp_image_t*)pic->opaque;
 831     }
 832
 833     if(!mpi)
 834     mpi=mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, MP_IMGFLAG_PRESERVE,
 835         avctx->width, avctx->height);
 836     if(!mpi){   // temporary!
 837         mp_msg(MSGT_DECVIDEO, MSGL_WARN, MSGTR_MPCODECS_CouldntAllocateImageForCodec);
 838         return NULL;
 839     }
 840
 841     if(!dr1){
 842         mpi->planes[0]=pic->data[0];
 843         mpi->planes[1]=pic->data[1];
 844         mpi->planes[2]=pic->data[2];
 845         mpi->stride[0]=pic->linesize[0];
 846         mpi->stride[1]=pic->linesize[1];
 847         mpi->stride[2]=pic->linesize[2];
 848     }
 849
 850     if (!mpi->planes[0])
 851         return NULL;
 852
 853     if(avctx->pix_fmt==PIX_FMT_YUV422P && mpi->chroma_y_shift==1){
 854         // we have 422p but user wants 420p
 855         mpi->stride[1]*=2;
 856         mpi->stride[2]*=2;
 857     }
 858
 859 #ifdef WORDS_BIGENDIAN
 860     // FIXME: this might cause problems for buffers with FF_BUFFER_HINTS_PRESERVE
 861     if (mpi->bpp == 8)
 862         swap_palette(mpi->planes[1]);
 863 #endif
 864 /* to comfirm with newer lavc style */
 865     mpi->qscale =pic->qscale_table;
 866     mpi->qstride=pic->qstride;
 867     mpi->pict_type=pic->pict_type;
 868     mpi->qscale_type= pic->qscale_type;
 869     mpi->fields = MP_IMGFIELD_ORDERED;
 870     if(pic->interlaced_frame) mpi->fields |= MP_IMGFIELD_INTERLACED;
 871     if(pic->top_field_first ) mpi->fields |= MP_IMGFIELD_TOP_FIRST;
 872     if(pic->repeat_pict == 1) mpi->fields |= MP_IMGFIELD_REPEAT_FIRST;
 873
 874     return mpi;
 875 }
 876
 877 #if CONFIG_XVMC
 878 static enum PixelFormat get_format(struct AVCodecContext * avctx,
 879                                     const enum PixelFormat * fmt){
 880 sh_video_t * sh = avctx->opaque;
 881 int i;
 882
 883     if(avctx->xvmc_acceleration){
 884         vd_ffmpeg_ctx *ctx = sh->context;
 885         avctx->get_buffer= mc_get_buffer;
 886         avctx->release_buffer= mc_release_buffer;
 887         avctx->draw_horiz_band = mc_render_slice;
 888         mp_msg(MSGT_DECVIDEO, MSGL_INFO, MSGTR_MPCODECS_XVMCAcceleratedMPEG2);
 889         assert(ctx->do_dr1);//these are must to!
 890         assert(ctx->do_slices); //it is (vo_)ffmpeg bug if this fails
 891         avctx->flags|= CODEC_FLAG_EMU_EDGE;//do i need that??!!
 892         avctx->slice_flags=SLICE_FLAG_CODED_ORDER|SLICE_FLAG_ALLOW_FIELD;
 893     }
 894     for(i=0;fmt[i]!=-1;i++){
 895         mp_msg(MSGT_DECVIDEO, MSGL_INFO, MSGTR_MPCODECS_TryingPixfmt,i);
 896         if( init_vo(sh,fmt[i]) >= 0)
 897             return fmt[i];
 898     }
 899     return fmt[0];
 900 }
 901
 902 static int mc_get_buffer(AVCodecContext *avctx, AVFrame *pic){
 903     sh_video_t * sh = avctx->opaque;
 904     vd_ffmpeg_ctx *ctx = sh->context;
 905     mp_image_t* mpi=NULL;
 906     struct xvmc_render_state * render;
 907     int flags= MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE|
 908                MP_IMGFLAG_DRAW_CALLBACK;
 909
 910 //  printf("vd_ffmpeg::mc_get_buffer (xvmc) %d %d %d\n", pic->reference, ctx->ip_count, ctx->b_count);
 911     if(!avctx->xvmc_acceleration){
 912         mp_msg(MSGT_DECVIDEO, MSGL_INFO, MSGTR_MPCODECS_McGetBufferShouldWorkOnlyWithXVMC);
 913         assert(0);
 914         exit(1);
 915 //        return -1;//!!fixme check error conditions
 916     }
 917     assert(avctx->draw_horiz_band == mc_render_slice);
 918     assert(avctx->release_buffer == mc_release_buffer);
 919     if( mp_msg_test(MSGT_DECVIDEO,MSGL_DBG5) )
 920         mp_msg(MSGT_DECVIDEO, MSGL_DBG5, "vd_ffmpeg::mc_get_buffer\n");
 921
 922     if(init_vo(sh,avctx->pix_fmt) < 0){
 923         mp_msg(MSGT_DECVIDEO, MSGL_WARN, MSGTR_MPCODECS_UnexpectedInitVoError);
 924         exit(1);
 925 //        return -1;//!!fixme check error conditions
 926     }
 927
 928
 929
 930     if(!pic->reference){
 931         ctx->b_count++;
 932     }else{
 933         ctx->ip_count++;
 934         flags|= MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE;
 935     }
 936
 937     mpi= mpcodecs_get_image(sh, MP_IMGTYPE_IPB,flags ,
 938                             avctx->width, avctx->height);
 939     if(mpi==NULL){
 940         mp_msg(MSGT_DECVIDEO, MSGL_ERR, MSGTR_MPCODECS_UnrecoverableErrorRenderBuffersNotTaken);
 941         assert(0);
 942         exit(1);
 943 //        return -1;//!!fixme check error conditions in ffmpeg
 944     };
 945
 946     if( (mpi->flags & MP_IMGFLAG_DIRECT) == 0){
 947         mp_msg(MSGT_DECVIDEO, MSGL_ERR, MSGTR_MPCODECS_OnlyBuffersAllocatedByVoXvmcAllowed);
 948         assert(0);
 949         exit(1);
 950 //        return -1;//!!fixme check error conditions in ffmpeg
 951     }
 952
 953     pic->data[0]= mpi->planes[0];
 954     pic->data[1]= mpi->planes[1];
 955     pic->data[2]= mpi->planes[2];
 956
 957
 958     /* Note, some (many) codecs in libavcodec must have stride1==stride2 && no changes between frames
 959      * lavc will check that and die with an error message, if its not true
 960      */
 961     pic->linesize[0]= mpi->stride[0];
 962     pic->linesize[1]= mpi->stride[1];
 963     pic->linesize[2]= mpi->stride[2];
 964
 965     pic->opaque = mpi;
 966
 967     if(pic->reference){
 968     //I or P frame
 969         pic->age= ctx->ip_age[0];
 970
 971         ctx->ip_age[0]= ctx->ip_age[1]+1;
 972         ctx->ip_age[1]= 1;
 973         ctx->b_age++;
 974     }else{
 975     //B frame
 976         pic->age= ctx->b_age;
 977
 978         ctx->ip_age[0]++;
 979         ctx->ip_age[1]++;
 980         ctx->b_age=1;
 981     }
 982
 983     pic->type= FF_BUFFER_TYPE_USER;
 984
 985     render=(struct xvmc_render_state*)mpi->priv;//same as data[2]
 986     if( mp_msg_test(MSGT_DECVIDEO,MSGL_DBG5) )
 987         mp_msg(MSGT_DECVIDEO, MSGL_DBG5, "vd_ffmpeg::mc_get_buffer (render=%p)\n",render);
 988     assert(render != 0);
 989     assert(render->magic == MP_XVMC_RENDER_MAGIC);
 990     render->state |= MP_XVMC_STATE_PREDICTION;
 991     return 0;
 992 }
 993
 994
 995 static void mc_release_buffer(AVCodecContext *avctx, AVFrame *pic){
 996     mp_image_t* mpi= pic->opaque;
 997     sh_video_t * sh = avctx->opaque;
 998     vd_ffmpeg_ctx *ctx = sh->context;
 999     struct xvmc_render_state * render;
1000     int i;
1001
1002
1003     if(ctx->ip_count <= 2 && ctx->b_count<=1){
1004         if(mpi->flags&MP_IMGFLAG_PRESERVE)
1005             ctx->ip_count--;
1006         else
1007             ctx->b_count--;
1008     }
1009
1010 //printf("R%X %X\n", pic->linesize[0], pic->data[0]);
1011 //mark the surface as not requared for prediction
1012     render=(struct xvmc_render_state*)pic->data[2];//same as mpi->priv
1013     if( mp_msg_test(MSGT_DECVIDEO,MSGL_DBG5) )
1014         mp_msg(MSGT_DECVIDEO, MSGL_DBG5, "vd_ffmpeg::mc_release_buffer (render=%p)\n",render);
1015     assert(render!=NULL);
1016     assert(render->magic==MP_XVMC_RENDER_MAGIC);
1017     render->state&=~MP_XVMC_STATE_PREDICTION;
1018     for(i=0; i<4; i++){
1019         pic->data[i]= NULL;
1020     }
1021 }
1022
1023 static void mc_render_slice(struct AVCodecContext *s,
1024                         AVFrame *src, int offset[4],
1025                         int y, int type, int height){
1026 int width= s->width;
1027 sh_video_t * sh = s->opaque;
1028 uint8_t *source[3]= {src->data[0], src->data[1], src->data[2]};
1029
1030     assert(src->linesize[0]==0 && src->linesize[1]==0 && src->linesize[2]==0);
1031     assert(offset[0]==0 && offset[1]==0 && offset[2]==0);
1032
1033     mpcodecs_draw_slice (sh, source, src->linesize, width, height, 0, y);
1034
1035 }
1036
1037 #endif /* CONFIG_XVMC */