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 "options.h"
  10 #include "av_opts.h"
  11
  12 #include "libavutil/common.h"
  13 #include "ffmpeg_files/intreadwrite.h"
  14 #include "mpbswap.h"
  15 #include "fmt-conversion.h"
  16
  17 #include "vd.h"
  18 #include "img_format.h"
  19 #include "libmpdemux/stheader.h"
  20 #include "codec-cfg.h"
  21
  22 static const vd_info_t info = {
  23     "FFmpeg's libavcodec codec family",
  24     "ffmpeg",
  25     "A'rpi",
  26     "A'rpi, Michael, Alex",
  27     "native codecs"
  28 };
  29
  30 #include "libavcodec/avcodec.h"
  31
  32 #if AVPALETTE_SIZE > 1024
  33 #error palette too large, adapt libmpcodecs/vf.c:vf_get_image
  34 #endif
  35
  36 #if CONFIG_XVMC
  37 #include "libavcodec/xvmc.h"
  38 #endif
  39
  40 int avcodec_initialized=0;
  41
  42 typedef struct {
  43     AVCodecContext *avctx;
  44     AVFrame *pic;
  45     enum PixelFormat pix_fmt;
  46     int do_slices;
  47     int do_dr1;
  48     int vo_initialized;
  49     int best_csp;
  50     int b_age;
  51     int ip_age[2];
  52     int qp_stat[32];
  53     double qp_sum;
  54     double inv_qp_sum;
  55     int ip_count;
  56     int b_count;
  57     AVRational last_sample_aspect_ratio;
  58     int lowres;
  59 } vd_ffmpeg_ctx;
  60
  61 #include "m_option.h"
  62
  63 static int get_buffer(AVCodecContext *avctx, AVFrame *pic);
  64 static void release_buffer(AVCodecContext *avctx, AVFrame *pic);
  65 static void draw_slice(struct AVCodecContext *s, const AVFrame *src,
  66                        int offset[4], int y, int type, int height);
  67
  68 static enum PixelFormat get_format(struct AVCodecContext *avctx,
  69                                    const enum PixelFormat *pix_fmt);
  70 static void uninit(struct sh_video *sh);
  71
  72 const m_option_t lavc_decode_opts_conf[]={
  73     OPT_INTRANGE("bug", lavc_param.workaround_bugs, 0, -1, 999999),
  74     OPT_INTRANGE("er", lavc_param.error_resilience, 0, 0, 99),
  75     OPT_FLAG_ON("gray", lavc_param.gray, 0),
  76     OPT_INTRANGE("idct", lavc_param.idct_algo, 0, 0, 99),
  77     OPT_INTRANGE("ec", lavc_param.error_concealment, 0, 0, 99),
  78     OPT_FLAG_ON("vstats", lavc_param.vstats, 0),
  79     OPT_INTRANGE("debug", lavc_param.debug, 0, 0, 9999999),
  80     OPT_INTRANGE("vismv", lavc_param.vismv, 0, 0, 9999999),
  81     OPT_INTRANGE("st", lavc_param.skip_top, 0, 0, 999),
  82     OPT_INTRANGE("sb", lavc_param.skip_bottom, 0, 0, 999),
  83     OPT_FLAG_CONSTANTS("fast", lavc_param.fast, 0, 0, CODEC_FLAG2_FAST),
  84     OPT_STRING("lowres", lavc_param.lowres_str, 0),
  85     OPT_STRING("skiploopfilter", lavc_param.skip_loop_filter_str, 0),
  86     OPT_STRING("skipidct", lavc_param.skip_idct_str, 0),
  87     OPT_STRING("skipframe", lavc_param.skip_frame_str, 0),
  88     OPT_INTRANGE("threads", lavc_param.threads, 0, 1, 8),
  89     OPT_FLAG_CONSTANTS("bitexact", lavc_param.bitexact, 0, 0, CODEC_FLAG_BITEXACT),
  90     OPT_STRING("o", lavc_param.avopt, 0),
  91     {NULL, NULL, 0, 0, 0, 0, NULL}
  92 };
  93
  94 static enum AVDiscard str2AVDiscard(char *str) {
  95     if (!str)                               return AVDISCARD_DEFAULT;
  96     if (strcasecmp(str, "none"   ) == 0)    return AVDISCARD_NONE;
  97     if (strcasecmp(str, "default") == 0)    return AVDISCARD_DEFAULT;
  98     if (strcasecmp(str, "nonref" ) == 0)    return AVDISCARD_NONREF;
  99     if (strcasecmp(str, "bidir"  ) == 0)    return AVDISCARD_BIDIR;
 100     if (strcasecmp(str, "nonkey" ) == 0)    return AVDISCARD_NONKEY;
 101     if (strcasecmp(str, "all"    ) == 0)    return AVDISCARD_ALL;
 102     mp_msg(MSGT_DECVIDEO, MSGL_ERR, "Unknown discard value %s\n", str);
 103     return AVDISCARD_DEFAULT;
 104 }
 105
 106 // to set/get/query special features/parameters
 107 static int control(sh_video_t *sh, int cmd, void *arg, ...){
 108     vd_ffmpeg_ctx *ctx = sh->context;
 109     AVCodecContext *avctx = ctx->avctx;
 110     switch(cmd){
 111     case VDCTRL_QUERY_FORMAT:
 112     {
 113         int format =(*((int *)arg));
 114         if(format == ctx->best_csp) return CONTROL_TRUE;//supported
 115         // possible conversions:
 116         switch(format){
 117         case IMGFMT_YV12:
 118         case IMGFMT_IYUV:
 119         case IMGFMT_I420:
 120             // "converted" using pointer/stride modification
 121             if(avctx->pix_fmt==PIX_FMT_YUV420P) return CONTROL_TRUE;// u/v swap
 122             if(avctx->pix_fmt==PIX_FMT_YUV422P && !ctx->do_dr1) return CONTROL_TRUE;// half stride
 123             break;
 124 #if CONFIG_XVMC
 125         case IMGFMT_XVMC_IDCT_MPEG2:
 126         case IMGFMT_XVMC_MOCO_MPEG2:
 127             if(avctx->pix_fmt==PIX_FMT_XVMC_MPEG2_IDCT) return CONTROL_TRUE;
 128 #endif
 129         }
 130         return CONTROL_FALSE;
 131     }
 132     case VDCTRL_RESYNC_STREAM:
 133         avcodec_flush_buffers(avctx);
 134         return CONTROL_TRUE;
 135     case VDCTRL_QUERY_UNSEEN_FRAMES:;
 136         int delay = avctx->has_b_frames;
 137 #ifdef FF_THREAD_FRAME
 138         // FFmpeg-mt has extra delay when using frame threading
 139         if (avctx->thread_type & FF_THREAD_FRAME)
 140             delay += avctx->thread_count - 1;
 141 #endif
 142         return delay + 10;
 143     }
 144     return CONTROL_UNKNOWN;
 145 }
 146
 147 static void set_format_params(struct AVCodecContext *avctx, enum PixelFormat fmt){
 148     int imgfmt;
 149     if (fmt == PIX_FMT_NONE)
 150         return;
 151     imgfmt = pixfmt2imgfmt(fmt);
 152     if (IMGFMT_IS_XVMC(imgfmt) || IMGFMT_IS_VDPAU(imgfmt)) {
 153         sh_video_t *sh     = avctx->opaque;
 154         vd_ffmpeg_ctx *ctx = sh->context;
 155         ctx->do_dr1    = 1;
 156         ctx->do_slices = 1;
 157         avctx->thread_count    = 1;
 158         avctx->get_buffer      = get_buffer;
 159         avctx->release_buffer  = release_buffer;
 160         avctx->reget_buffer    = get_buffer;
 161         avctx->draw_horiz_band = draw_slice;
 162         mp_tmsg(MSGT_DECVIDEO, MSGL_INFO, "[VD_FFMPEG] XVMC-accelerated MPEG-2.\n");
 163         avctx->slice_flags = SLICE_FLAG_CODED_ORDER|SLICE_FLAG_ALLOW_FIELD;
 164     }
 165 }
 166
 167 // init driver
 168 static int init(sh_video_t *sh){
 169     struct lavc_param *lavc_param = &sh->opts->lavc_param;
 170     AVCodecContext *avctx;
 171     vd_ffmpeg_ctx *ctx;
 172     AVCodec *lavc_codec;
 173     int lowres_w=0;
 174     int do_vis_debug= lavc_param->vismv || (lavc_param->debug&(FF_DEBUG_VIS_MB_TYPE|FF_DEBUG_VIS_QP));
 175
 176     if(!avcodec_initialized){
 177         avcodec_init();
 178         avcodec_register_all();
 179         avcodec_initialized=1;
 180     }
 181
 182     ctx = sh->context = malloc(sizeof(vd_ffmpeg_ctx));
 183     if (!ctx)
 184         return 0;
 185     memset(ctx, 0, sizeof(vd_ffmpeg_ctx));
 186
 187     lavc_codec = (AVCodec *)avcodec_find_decoder_by_name(sh->codec->dll);
 188     if(!lavc_codec){
 189         mp_tmsg(MSGT_DECVIDEO, MSGL_ERR, "Cannot find codec '%s' in libavcodec...\n", sh->codec->dll);
 190         uninit(sh);
 191         return 0;
 192     }
 193
 194     if(sh->opts->vd_use_slices && (lavc_codec->capabilities&CODEC_CAP_DRAW_HORIZ_BAND) && !do_vis_debug)
 195         ctx->do_slices=1;
 196
 197     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)
 198         ctx->do_dr1=1;
 199     ctx->b_age= ctx->ip_age[0]= ctx->ip_age[1]= 256*256*256*64;
 200     ctx->ip_count= ctx->b_count= 0;
 201
 202     ctx->pic = avcodec_alloc_frame();
 203     ctx->avctx = avcodec_alloc_context();
 204     avctx = ctx->avctx;
 205     avctx->opaque = sh;
 206     avctx->codec_type = CODEC_TYPE_VIDEO;
 207     avctx->codec_id = lavc_codec->id;
 208
 209 #if CONFIG_VDPAU
 210     if(lavc_codec->capabilities & CODEC_CAP_HWACCEL_VDPAU){
 211         avctx->get_format = get_format;
 212     }
 213 #endif /* CONFIG_VDPAU */
 214 #if CONFIG_XVMC
 215     if(lavc_codec->capabilities & CODEC_CAP_HWACCEL){
 216         mp_tmsg(MSGT_DECVIDEO, MSGL_INFO, "[VD_FFMPEG] XVMC accelerated codec.\n");
 217         avctx->get_format= get_format;//for now only this decoder will use it
 218         // HACK around badly placed checks in mpeg_mc_decode_init
 219         set_format_params(avctx, PIX_FMT_XVMC_MPEG2_IDCT);
 220     }
 221 #endif /* CONFIG_XVMC */
 222     if(ctx->do_dr1){
 223         avctx->flags|= CODEC_FLAG_EMU_EDGE;
 224         avctx->get_buffer= get_buffer;
 225         avctx->release_buffer= release_buffer;
 226         avctx->reget_buffer= get_buffer;
 227     }
 228
 229     avctx->flags|= lavc_param->bitexact;
 230
 231     avctx->width = sh->disp_w;
 232     avctx->height= sh->disp_h;
 233     avctx->workaround_bugs= lavc_param->workaround_bugs;
 234     avctx->error_recognition= lavc_param->error_resilience;
 235     if(lavc_param->gray) avctx->flags|= CODEC_FLAG_GRAY;
 236     avctx->flags2|= lavc_param->fast;
 237     avctx->codec_tag= sh->format;
 238     avctx->stream_codec_tag= sh->video.fccHandler;
 239     avctx->idct_algo= lavc_param->idct_algo;
 240     avctx->error_concealment= lavc_param->error_concealment;
 241     avctx->debug= lavc_param->debug;
 242     if (lavc_param->debug)
 243         av_log_set_level(AV_LOG_DEBUG);
 244     avctx->debug_mv= lavc_param->vismv;
 245     avctx->skip_top   = lavc_param->skip_top;
 246     avctx->skip_bottom= lavc_param->skip_bottom;
 247     if(lavc_param->lowres_str != NULL)
 248     {
 249         sscanf(lavc_param->lowres_str, "%d,%d", &ctx->lowres, &lowres_w);
 250         if(ctx->lowres < 1 || ctx->lowres > 16 || (lowres_w > 0 && avctx->width < lowres_w))
 251             ctx->lowres = 0;
 252         avctx->lowres = ctx->lowres;
 253     }
 254     avctx->skip_loop_filter = str2AVDiscard(lavc_param->skip_loop_filter_str);
 255     avctx->skip_idct = str2AVDiscard(lavc_param->skip_idct_str);
 256     avctx->skip_frame = str2AVDiscard(lavc_param->skip_frame_str);
 257
 258     if(lavc_param->avopt){
 259         if(parse_avopts(avctx, lavc_param->avopt) < 0){
 260             mp_msg(MSGT_DECVIDEO, MSGL_ERR, "Your options /%s/ look like gibberish to me pal\n", lavc_param->avopt);
 261             uninit(sh);
 262             return 0;
 263         }
 264     }
 265
 266     mp_dbg(MSGT_DECVIDEO, MSGL_DBG2, "libavcodec.size: %d x %d\n", avctx->width, avctx->height);
 267     switch (sh->format) {
 268     case mmioFOURCC('S','V','Q','3'):
 269     /* SVQ3 extradata can show up as sh->ImageDesc if demux_mov is used, or
 270        in the phony AVI header if demux_lavf is used. The first case is
 271        handled here; the second case falls through to the next section. */
 272         if (sh->ImageDesc) {
 273             avctx->extradata_size = (*(int *)sh->ImageDesc) - sizeof(int);
 274             avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 275             memcpy(avctx->extradata, ((int *)sh->ImageDesc)+1, avctx->extradata_size);
 276             break;
 277         }
 278         /* fallthrough */
 279
 280     case mmioFOURCC('A','V','R','n'):
 281     case mmioFOURCC('M','J','P','G'):
 282     /* AVRn stores huffman table in AVI header */
 283     /* Pegasus MJPEG stores it also in AVI header, but it uses the common
 284        MJPG fourcc :( */
 285         if (!sh->bih || sh->bih->biSize <= sizeof(BITMAPINFOHEADER))
 286             break;
 287         avctx->flags |= CODEC_FLAG_EXTERN_HUFF;
 288         avctx->extradata_size = sh->bih->biSize-sizeof(BITMAPINFOHEADER);
 289         avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 290         memcpy(avctx->extradata, sh->bih+1, avctx->extradata_size);
 291
 292 #if 0
 293         {
 294             int x;
 295             uint8_t *p = avctx->extradata;
 296
 297             for (x=0; x<avctx->extradata_size; x++)
 298                 mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[%x] ", p[x]);
 299             mp_msg(MSGT_DECVIDEO, MSGL_INFO, "\n");
 300         }
 301 #endif
 302         break;
 303
 304     case mmioFOURCC('R', 'V', '1', '0'):
 305     case mmioFOURCC('R', 'V', '1', '3'):
 306     case mmioFOURCC('R', 'V', '2', '0'):
 307     case mmioFOURCC('R', 'V', '3', '0'):
 308     case mmioFOURCC('R', 'V', '4', '0'):
 309         if(sh->bih->biSize<sizeof(*sh->bih)+8){
 310             /* only 1 packet per frame & sub_id from fourcc */
 311             avctx->extradata_size= 8;
 312             avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 313             ((uint32_t *)avctx->extradata)[0] = 0;
 314             ((uint32_t *)avctx->extradata)[1] =
 315                 (sh->format == mmioFOURCC('R', 'V', '1', '3')) ? 0x10003001 : 0x10000000;
 316         } else {
 317             /* has extra slice header (demux_rm or rm->avi streamcopy) */
 318             avctx->extradata_size = sh->bih->biSize-sizeof(BITMAPINFOHEADER);
 319             avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 320             memcpy(avctx->extradata, sh->bih+1, avctx->extradata_size);
 321         }
 322         avctx->sub_id= AV_RB32(avctx->extradata+4);
 323
 324 //        printf("%X %X %d %d\n", extrahdr[0], extrahdr[1]);
 325         break;
 326
 327     default:
 328         if (!sh->bih || sh->bih->biSize <= sizeof(BITMAPINFOHEADER))
 329             break;
 330         avctx->extradata_size = sh->bih->biSize-sizeof(BITMAPINFOHEADER);
 331         avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 332         memcpy(avctx->extradata, sh->bih+1, avctx->extradata_size);
 333         break;
 334     }
 335     /* Pass palette to codec */
 336     if (sh->bih && (sh->bih->biBitCount <= 8)) {
 337         avctx->palctrl = calloc(1, sizeof(AVPaletteControl));
 338         avctx->palctrl->palette_changed = 1;
 339         if (sh->bih->biSize-sizeof(BITMAPINFOHEADER))
 340             /* Palette size in biSize */
 341             memcpy(avctx->palctrl->palette, sh->bih+1,
 342                    FFMIN(sh->bih->biSize-sizeof(BITMAPINFOHEADER), AVPALETTE_SIZE));
 343         else
 344             /* Palette size in biClrUsed */
 345             memcpy(avctx->palctrl->palette, sh->bih+1,
 346                    FFMIN(sh->bih->biClrUsed * 4, AVPALETTE_SIZE));
 347         }
 348
 349     if(sh->bih)
 350         avctx->bits_per_coded_sample= sh->bih->biBitCount;
 351
 352     if(lavc_param->threads > 1)
 353         avcodec_thread_init(avctx, lavc_param->threads);
 354     /* open it */
 355     if (avcodec_open(avctx, lavc_codec) < 0) {
 356         mp_tmsg(MSGT_DECVIDEO, MSGL_ERR, "Could not open codec.\n");
 357         uninit(sh);
 358         return 0;
 359     }
 360     // this is necessary in case get_format was never called and init_vo is
 361     // too late e.g. for H.264 VDPAU
 362     set_format_params(avctx, avctx->pix_fmt);
 363     mp_msg(MSGT_DECVIDEO, MSGL_V, "INFO: libavcodec init OK!\n");
 364     return 1; //mpcodecs_config_vo(sh, sh->disp_w, sh->disp_h, IMGFMT_YV12);
 365 }
 366
 367 // uninit driver
 368 static void uninit(sh_video_t *sh){
 369     vd_ffmpeg_ctx *ctx = sh->context;
 370     AVCodecContext *avctx = ctx->avctx;
 371
 372     if(sh->opts->lavc_param.vstats){
 373         int i;
 374         for(i=1; i<32; i++){
 375             mp_msg(MSGT_DECVIDEO, MSGL_INFO, "QP: %d, count: %d\n", i, ctx->qp_stat[i]);
 376         }
 377         mp_tmsg(MSGT_DECVIDEO, MSGL_INFO, "[VD_FFMPEG] Arithmetic mean of QP: %2.4f, Harmonic mean of QP: %2.4f\n",
 378             ctx->qp_sum / avctx->coded_frame->coded_picture_number,
 379             1.0/(ctx->inv_qp_sum / avctx->coded_frame->coded_picture_number)
 380             );
 381     }
 382
 383     if (avctx) {
 384         if (avctx->codec && avcodec_close(avctx) < 0)
 385             mp_tmsg(MSGT_DECVIDEO, MSGL_ERR, "Could not close codec.\n");
 386
 387         av_freep(&avctx->extradata);
 388         av_freep(&avctx->palctrl);
 389         av_freep(&avctx->slice_offset);
 390     }
 391
 392     av_freep(&avctx);
 393     av_freep(&ctx->pic);
 394     if (ctx)
 395         free(ctx);
 396 }
 397
 398 static void draw_slice(struct AVCodecContext *s,
 399                        const AVFrame *src, int offset[4],
 400                        int y, int type, int height){
 401     sh_video_t *sh = s->opaque;
 402     uint8_t *source[MP_MAX_PLANES]= {src->data[0] + offset[0], src->data[1] + offset[1], src->data[2] + offset[2]};
 403 #if 0
 404     int start=0, i;
 405     int width= s->width;
 406     vd_ffmpeg_ctx *ctx = sh->context;
 407     int skip_stride= ((width << ctx->lowres)+15)>>4;
 408     uint8_t *skip= &s->coded_frame->mbskip_table[(y>>4)*skip_stride];
 409     int threshold= s->coded_frame->age;
 410     if(s->pict_type!=B_TYPE){
 411         for(i=0; i*16<width+16; i++){
 412             if(i*16>=width || skip[i]>=threshold){
 413                 if(start==i) start++;
 414                 else{
 415                     uint8_t *src2[3]= {src[0] + start*16,
 416                                      src[1] + start*8,
 417                                      src[2] + start*8};
 418 //printf("%2d-%2d x %d\n", start, i, y);
 419                     mpcodecs_draw_slice (sh, src2, stride, (i-start)*16, height, start*16, y);
 420                     start= i+1;
 421                 }
 422             }
 423         }
 424     }else
 425 #endif
 426     if (y < sh->disp_h) {
 427         mpcodecs_draw_slice (sh, source, src->linesize, sh->disp_w, (y+height)<=sh->disp_h?height:sh->disp_h-y, 0, y);
 428     }
 429 }
 430
 431
 432 static int init_vo(sh_video_t *sh, enum PixelFormat pix_fmt){
 433     vd_ffmpeg_ctx *ctx = sh->context;
 434     AVCodecContext *avctx = ctx->avctx;
 435     float aspect= av_q2d(avctx->sample_aspect_ratio) * avctx->width / avctx->height;
 436     int width, height;
 437
 438     width = avctx->width;
 439     height = avctx->height;
 440
 441     // HACK!
 442     // if sh->ImageDesc is non-NULL, it means we decode QuickTime(tm) video.
 443     // use dimensions from BIH to avoid black borders at the right and bottom.
 444     if (sh->bih && sh->ImageDesc) {
 445         width = sh->bih->biWidth >> ctx->lowres;
 446         height = sh->bih->biHeight >> ctx->lowres;
 447     }
 448
 449      // it is possible another vo buffers to be used after vo config()
 450      // lavc reset its buffers on width/heigh change but not on aspect change!!!
 451     if (av_cmp_q(avctx->sample_aspect_ratio, ctx->last_sample_aspect_ratio) ||
 452         width != sh->disp_w  ||
 453         height != sh->disp_h ||
 454         pix_fmt != ctx->pix_fmt ||
 455         !ctx->vo_initialized)
 456     {
 457         // this is a special-case HACK for MPEG-1/2 VDPAU that uses neither get_format nor
 458         // sets the value correctly in avcodec_open.
 459         set_format_params(avctx, avctx->pix_fmt);
 460         mp_msg(MSGT_DECVIDEO, MSGL_V, "[ffmpeg] aspect_ratio: %f\n", aspect);
 461         if (sh->aspect == 0 ||
 462             av_cmp_q(avctx->sample_aspect_ratio,
 463                      ctx->last_sample_aspect_ratio))
 464             sh->aspect = aspect;
 465         ctx->last_sample_aspect_ratio = avctx->sample_aspect_ratio;
 466         sh->disp_w = width;
 467         sh->disp_h = height;
 468         ctx->pix_fmt = pix_fmt;
 469         ctx->best_csp = pixfmt2imgfmt(pix_fmt);
 470         if (!mpcodecs_config_vo(sh, sh->disp_w, sh->disp_h, ctx->best_csp))
 471             return -1;
 472         ctx->vo_initialized = 1;
 473     }
 474     return 0;
 475 }
 476
 477 static int get_buffer(AVCodecContext *avctx, AVFrame *pic){
 478     sh_video_t *sh = avctx->opaque;
 479     vd_ffmpeg_ctx *ctx = sh->context;
 480     mp_image_t *mpi=NULL;
 481     int flags= MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE;
 482     int type= MP_IMGTYPE_IPB;
 483     int width= avctx->width;
 484     int height= avctx->height;
 485     avcodec_align_dimensions(avctx, &width, &height);
 486 //printf("get_buffer %d %d %d\n", pic->reference, ctx->ip_count, ctx->b_count);
 487
 488     if (pic->buffer_hints) {
 489         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "Buffer hints: %u\n", pic->buffer_hints);
 490         type = MP_IMGTYPE_TEMP;
 491         if (pic->buffer_hints & FF_BUFFER_HINTS_READABLE)
 492             flags |= MP_IMGFLAG_READABLE;
 493         if (pic->buffer_hints & FF_BUFFER_HINTS_PRESERVE) {
 494             type = MP_IMGTYPE_STATIC;
 495             flags |= MP_IMGFLAG_PRESERVE;
 496         }
 497         if (pic->buffer_hints & FF_BUFFER_HINTS_REUSABLE) {
 498             type = MP_IMGTYPE_STATIC;
 499             flags |= MP_IMGFLAG_PRESERVE;
 500         }
 501         flags|=(!avctx->hurry_up && ctx->do_slices) ?
 502                  MP_IMGFLAG_DRAW_CALLBACK:0;
 503         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, type == MP_IMGTYPE_STATIC ? "using STATIC\n" : "using TEMP\n");
 504     } else {
 505         if(!pic->reference){
 506             ctx->b_count++;
 507             flags|=(!avctx->hurry_up && ctx->do_slices) ?
 508                      MP_IMGFLAG_DRAW_CALLBACK:0;
 509         }else{
 510             ctx->ip_count++;
 511             flags|= MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE
 512                       | (ctx->do_slices ? MP_IMGFLAG_DRAW_CALLBACK : 0);
 513         }
 514     }
 515
 516     if(init_vo(sh, avctx->pix_fmt) < 0){
 517         avctx->release_buffer= avcodec_default_release_buffer;
 518         avctx->get_buffer= avcodec_default_get_buffer;
 519         return avctx->get_buffer(avctx, pic);
 520     }
 521
 522     if (IMGFMT_IS_XVMC(ctx->best_csp) || IMGFMT_IS_VDPAU(ctx->best_csp)) {
 523         type =  MP_IMGTYPE_NUMBERED | (0xffff << 16);
 524     } else
 525     if (!pic->buffer_hints) {
 526         if(ctx->b_count>1 || ctx->ip_count>2){
 527             mp_tmsg(MSGT_DECVIDEO, MSGL_WARN, "[VD_FFMPEG] DRI failure.\n");
 528
 529             ctx->do_dr1=0; //FIXME
 530             avctx->get_buffer= avcodec_default_get_buffer;
 531             return avctx->get_buffer(avctx, pic);
 532         }
 533
 534         if(avctx->has_b_frames){
 535             type= MP_IMGTYPE_IPB;
 536         }else{
 537             type= MP_IMGTYPE_IP;
 538         }
 539         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, type== MP_IMGTYPE_IPB ? "using IPB\n" : "using IP\n");
 540     }
 541
 542     if (ctx->best_csp == IMGFMT_RGB8 || ctx->best_csp == IMGFMT_BGR8)
 543         flags |= MP_IMGFLAG_RGB_PALETTE;
 544     mpi= mpcodecs_get_image(sh, type, flags, width, height);
 545     if (!mpi) return -1;
 546
 547     // ok, let's see what did we get:
 548     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK &&
 549        !(mpi->flags&MP_IMGFLAG_DIRECT)){
 550         // nice, filter/vo likes draw_callback :)
 551         avctx->draw_horiz_band= draw_slice;
 552     } else
 553         avctx->draw_horiz_band= NULL;
 554     if(IMGFMT_IS_VDPAU(mpi->imgfmt)) {
 555         avctx->draw_horiz_band= draw_slice;
 556     }
 557 #if CONFIG_XVMC
 558     if(IMGFMT_IS_XVMC(mpi->imgfmt)) {
 559         struct xvmc_pix_fmt *render = mpi->priv; //same as data[2]
 560         avctx->draw_horiz_band= draw_slice;
 561         if(!avctx->xvmc_acceleration) {
 562             mp_tmsg(MSGT_DECVIDEO, MSGL_INFO, "[VD_FFMPEG] The mc_get_buffer should work only with XVMC acceleration!!");
 563             assert(0);
 564             exit(1);
 565 //            return -1;//!!fixme check error conditions in ffmpeg
 566         }
 567         if(!(mpi->flags & MP_IMGFLAG_DIRECT)) {
 568             mp_tmsg(MSGT_DECVIDEO, MSGL_ERR, "[VD_FFMPEG] Only buffers allocated by vo_xvmc allowed.\n");
 569             assert(0);
 570             exit(1);
 571 //            return -1;//!!fixme check error conditions in ffmpeg
 572         }
 573         if(mp_msg_test(MSGT_DECVIDEO, MSGL_DBG5))
 574             mp_msg(MSGT_DECVIDEO, MSGL_DBG5, "vd_ffmpeg::get_buffer (xvmc render=%p)\n", render);
 575         assert(render != 0);
 576         assert(render->xvmc_id == AV_XVMC_ID);
 577         render->state |= AV_XVMC_STATE_PREDICTION;
 578     }
 579 #endif
 580
 581     pic->data[0]= mpi->planes[0];
 582     pic->data[1]= mpi->planes[1];
 583     pic->data[2]= mpi->planes[2];
 584     pic->data[3]= mpi->planes[3];
 585
 586 #if 0
 587     assert(mpi->width >= ((width +align)&(~align)));
 588     assert(mpi->height >= ((height+align)&(~align)));
 589     assert(mpi->stride[0] >= mpi->width);
 590     if(mpi->imgfmt==IMGFMT_I420 || mpi->imgfmt==IMGFMT_YV12 || mpi->imgfmt==IMGFMT_IYUV){
 591         const int y_size= mpi->stride[0] * (mpi->h-1) + mpi->w;
 592         const int c_size= mpi->stride[1] * ((mpi->h>>1)-1) + (mpi->w>>1);
 593
 594         assert(mpi->planes[0] > mpi->planes[1] || mpi->planes[0] + y_size <= mpi->planes[1]);
 595         assert(mpi->planes[0] > mpi->planes[2] || mpi->planes[0] + y_size <= mpi->planes[2]);
 596         assert(mpi->planes[1] > mpi->planes[0] || mpi->planes[1] + c_size <= mpi->planes[0]);
 597         assert(mpi->planes[1] > mpi->planes[2] || mpi->planes[1] + c_size <= mpi->planes[2]);
 598         assert(mpi->planes[2] > mpi->planes[0] || mpi->planes[2] + c_size <= mpi->planes[0]);
 599         assert(mpi->planes[2] > mpi->planes[1] || mpi->planes[2] + c_size <= mpi->planes[1]);
 600     }
 601 #endif
 602
 603     /* Note, some (many) codecs in libavcodec must have stride1==stride2 && no changes between frames
 604      * lavc will check that and die with an error message, if its not true
 605      */
 606     pic->linesize[0]= mpi->stride[0];
 607     pic->linesize[1]= mpi->stride[1];
 608     pic->linesize[2]= mpi->stride[2];
 609     pic->linesize[3]= mpi->stride[3];
 610
 611     pic->opaque = mpi;
 612 //printf("%X\n", (int)mpi->planes[0]);
 613 #if 0
 614 if(mpi->flags&MP_IMGFLAG_DIRECT)
 615     printf("D");
 616 else if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 617     printf("S");
 618 else
 619     printf(".");
 620 #endif
 621     if(pic->reference){
 622         pic->age= ctx->ip_age[0];
 623
 624         ctx->ip_age[0]= ctx->ip_age[1]+1;
 625         ctx->ip_age[1]= 1;
 626         ctx->b_age++;
 627     }else{
 628         pic->age= ctx->b_age;
 629
 630         ctx->ip_age[0]++;
 631         ctx->ip_age[1]++;
 632         ctx->b_age=1;
 633     }
 634     pic->type= FF_BUFFER_TYPE_USER;
 635
 636     /* The libavcodec reordered_opaque functionality is implemented by
 637      * a similar copy in avcodec_default_get_buffer() and without a
 638      * workaround like this it'd stop working when a custom buffer
 639      * callback is used.
 640      */
 641     pic->reordered_opaque = avctx->reordered_opaque;
 642     return 0;
 643 }
 644
 645 static void release_buffer(struct AVCodecContext *avctx, AVFrame *pic){
 646     mp_image_t *mpi= pic->opaque;
 647     sh_video_t *sh = avctx->opaque;
 648     vd_ffmpeg_ctx *ctx = sh->context;
 649     int i;
 650
 651 //printf("release buffer %d %d %d\n", mpi ? mpi->flags&MP_IMGFLAG_PRESERVE : -99, ctx->ip_count, ctx->b_count);
 652
 653     if(ctx->ip_count <= 2 && ctx->b_count<=1){
 654         if(mpi->flags&MP_IMGFLAG_PRESERVE)
 655             ctx->ip_count--;
 656         else
 657             ctx->b_count--;
 658     }
 659
 660     if (mpi) {
 661         // Palette support: free palette buffer allocated in get_buffer
 662         if (mpi->bpp == 8)
 663             av_freep(&mpi->planes[1]);
 664 #if CONFIG_XVMC
 665         if (IMGFMT_IS_XVMC(mpi->imgfmt)) {
 666             struct xvmc_pix_fmt *render = (struct xvmc_pix_fmt*)pic->data[2]; //same as mpi->priv
 667             if(mp_msg_test(MSGT_DECVIDEO, MSGL_DBG5))
 668                 mp_msg(MSGT_DECVIDEO, MSGL_DBG5, "vd_ffmpeg::release_buffer (xvmc render=%p)\n", render);
 669             assert(render!=NULL);
 670             assert(render->xvmc_id == AV_XVMC_ID);
 671             render->state&=~AV_XVMC_STATE_PREDICTION;
 672         }
 673 #endif
 674         // release mpi (in case MPI_IMGTYPE_NUMBERED is used, e.g. for VDPAU)
 675         mpi->usage_count--;
 676     }
 677
 678     if(pic->type!=FF_BUFFER_TYPE_USER){
 679         avcodec_default_release_buffer(avctx, pic);
 680         return;
 681     }
 682
 683     for(i=0; i<4; i++){
 684         pic->data[i]= NULL;
 685     }
 686 //printf("R%X %X\n", pic->linesize[0], pic->data[0]);
 687 }
 688
 689 // copypaste from demux_real.c - it should match to get it working!
 690 //FIXME put into some header
 691 typedef struct dp_hdr_s {
 692     uint32_t chunks;        // number of chunks
 693     uint32_t timestamp; // timestamp from packet header
 694     uint32_t len;        // length of actual data
 695     uint32_t chunktab;        // offset to chunk offset array
 696 } dp_hdr_t;
 697
 698 static void swap_palette(void *pal) {
 699     int i;
 700     uint32_t *p = pal;
 701     for (i = 0; i < AVPALETTE_COUNT; i++)
 702         p[i] = le2me_32(p[i]);
 703 }
 704
 705 // decode a frame
 706 static struct mp_image *decode(struct sh_video *sh, void *data, int len,
 707                                int flags, double *reordered_pts)
 708 {
 709     int got_picture=0;
 710     int ret;
 711     vd_ffmpeg_ctx *ctx = sh->context;
 712     AVFrame *pic= ctx->pic;
 713     AVCodecContext *avctx = ctx->avctx;
 714     struct lavc_param *lavc_param = &sh->opts->lavc_param;
 715     mp_image_t *mpi=NULL;
 716     int dr1= ctx->do_dr1;
 717     AVPacket pkt;
 718
 719     if(len<=0) return NULL; // skipped frame
 720
 721 //ffmpeg interlace (mpeg2) bug have been fixed. no need of -noslices
 722     if (!dr1)
 723     avctx->draw_horiz_band=NULL;
 724     if(ctx->vo_initialized && !(flags&3) && !dr1){
 725         mpi=mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, MP_IMGFLAG_PRESERVE |
 726             (ctx->do_slices?MP_IMGFLAG_DRAW_CALLBACK:0),
 727             sh->disp_w, sh->disp_h);
 728         if(mpi && mpi->flags&MP_IMGFLAG_DRAW_CALLBACK){
 729             // vd core likes slices!
 730             avctx->draw_horiz_band=draw_slice;
 731         }
 732     }
 733
 734     avctx->hurry_up=(flags&3)?((flags&2)?2:1):0;
 735
 736     mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "vd_ffmpeg data: %04x, %04x, %04x, %04x\n",
 737            ((int *)data)[0], ((int *)data)[1], ((int *)data)[2], ((int *)data)[3]);
 738     av_init_packet(&pkt);
 739     pkt.data = data;
 740     pkt.size = len;
 741     // HACK: make PNGs decode normally instead of as CorePNG delta frames
 742     pkt.flags = PKT_FLAG_KEY;
 743     // The avcodec opaque field stupidly supports only int64_t type
 744     *(double *)&avctx->reordered_opaque = *reordered_pts;
 745     ret = avcodec_decode_video2(avctx, pic, &got_picture, &pkt);
 746     *reordered_pts = *(double *)&pic->reordered_opaque;
 747
 748     dr1= ctx->do_dr1;
 749     if(ret<0) mp_msg(MSGT_DECVIDEO, MSGL_WARN, "Error while decoding frame!\n");
 750 //printf("repeat: %d\n", pic->repeat_pict);
 751 //-- vstats generation
 752     while(lavc_param->vstats){ // always one time loop
 753         static FILE *fvstats=NULL;
 754         char filename[20];
 755         static long long int all_len=0;
 756         static int frame_number=0;
 757         static double all_frametime=0.0;
 758         AVFrame *pic= avctx->coded_frame;
 759         double quality=0.0;
 760
 761         if(!fvstats) {
 762             time_t today2;
 763             struct tm *today;
 764             today2 = time(NULL);
 765             today = localtime(&today2);
 766             sprintf(filename, "vstats_%02d%02d%02d.log", today->tm_hour,
 767                 today->tm_min, today->tm_sec);
 768             fvstats = fopen(filename, "w");
 769             if(!fvstats) {
 770                 perror("fopen");
 771                 lavc_param->vstats=0; // disable block
 772                 break;
 773                 /*exit(1);*/
 774             }
 775         }
 776
 777         // average MB quantizer
 778         {
 779             int x, y;
 780             int w = ((avctx->width  << ctx->lowres)+15) >> 4;
 781             int h = ((avctx->height << ctx->lowres)+15) >> 4;
 782             int8_t *q = pic->qscale_table;
 783             for(y = 0; y < h; y++) {
 784                 for(x = 0; x < w; x++)
 785                     quality += (double)*(q+x);
 786                 q += pic->qstride;
 787             }
 788             quality /= w * h;
 789         }
 790
 791         all_len+=len;
 792         all_frametime+=sh->frametime;
 793         fprintf(fvstats, "frame= %5d q= %2.2f f_size= %6d s_size= %8.0fkB ",
 794             ++frame_number, quality, len, (double)all_len/1024);
 795         fprintf(fvstats, "time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
 796            all_frametime, (double)(len*8)/sh->frametime/1000.0,
 797            (double)(all_len*8)/all_frametime/1000.0);
 798         switch(pic->pict_type){
 799         case FF_I_TYPE:
 800             fprintf(fvstats, "type= I\n");
 801             break;
 802         case FF_P_TYPE:
 803             fprintf(fvstats, "type= P\n");
 804             break;
 805         case FF_S_TYPE:
 806             fprintf(fvstats, "type= S\n");
 807             break;
 808         case FF_B_TYPE:
 809             fprintf(fvstats, "type= B\n");
 810             break;
 811         default:
 812             fprintf(fvstats, "type= ? (%d)\n", pic->pict_type);
 813             break;
 814         }
 815
 816         ctx->qp_stat[(int)(quality+0.5)]++;
 817         ctx->qp_sum += quality;
 818         ctx->inv_qp_sum += 1.0/(double)quality;
 819
 820         break;
 821     }
 822 //--
 823
 824     if(!got_picture) return NULL;        // skipped image
 825
 826     if(init_vo(sh, avctx->pix_fmt) < 0) return NULL;
 827
 828     if(dr1 && pic->opaque){
 829         mpi= (mp_image_t *)pic->opaque;
 830     }
 831
 832     if(!mpi)
 833     mpi=mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, MP_IMGFLAG_PRESERVE,
 834         avctx->width, avctx->height);
 835     if(!mpi){        // temporary!
 836         mp_tmsg(MSGT_DECVIDEO, MSGL_WARN, "[VD_FFMPEG] Couldn't allocate image for codec.\n");
 837         return NULL;
 838     }
 839
 840     if(!dr1){
 841         mpi->planes[0]=pic->data[0];
 842         mpi->planes[1]=pic->data[1];
 843         mpi->planes[2]=pic->data[2];
 844         mpi->planes[3]=pic->data[3];
 845         mpi->stride[0]=pic->linesize[0];
 846         mpi->stride[1]=pic->linesize[1];
 847         mpi->stride[2]=pic->linesize[2];
 848         mpi->stride[3]=pic->linesize[3];
 849     }
 850
 851     if (!mpi->planes[0])
 852         return NULL;
 853
 854     if(avctx->pix_fmt==PIX_FMT_YUV422P && mpi->chroma_y_shift==1){
 855         // we have 422p but user wants 420p
 856         mpi->stride[1]*=2;
 857         mpi->stride[2]*=2;
 858     }
 859
 860 #if HAVE_BIGENDIAN
 861     // FIXME: this might cause problems for buffers with FF_BUFFER_HINTS_PRESERVE
 862     if (mpi->bpp == 8)
 863         swap_palette(mpi->planes[1]);
 864 #endif
 865 /* to comfirm with newer lavc style */
 866     mpi->qscale =pic->qscale_table;
 867     mpi->qstride=pic->qstride;
 868     mpi->pict_type=pic->pict_type;
 869     mpi->qscale_type= pic->qscale_type;
 870     mpi->fields = MP_IMGFIELD_ORDERED;
 871     if(pic->interlaced_frame) mpi->fields |= MP_IMGFIELD_INTERLACED;
 872     if(pic->top_field_first ) mpi->fields |= MP_IMGFIELD_TOP_FIRST;
 873     if(pic->repeat_pict == 1) mpi->fields |= MP_IMGFIELD_REPEAT_FIRST;
 874
 875     return mpi;
 876 }
 877
 878 #if CONFIG_XVMC || CONFIG_VDPAU
 879 static enum PixelFormat get_format(struct AVCodecContext *avctx,
 880                                     const enum PixelFormat *fmt){
 881     enum PixelFormat selected_format;
 882     int imgfmt;
 883     sh_video_t *sh = avctx->opaque;
 884     int i;
 885
 886     for(i=0;fmt[i]!=PIX_FMT_NONE;i++){
 887         imgfmt = pixfmt2imgfmt(fmt[i]);
 888         if(!IMGFMT_IS_XVMC(imgfmt) && !IMGFMT_IS_VDPAU(imgfmt)) continue;
 889         mp_tmsg(MSGT_DECVIDEO, MSGL_INFO, "[VD_FFMPEG] Trying pixfmt=%d.\n", i);
 890         if(init_vo(sh, fmt[i]) >= 0) {
 891             break;
 892         }
 893     }
 894     selected_format = fmt[i];
 895     set_format_params(avctx, selected_format);
 896     return selected_format;
 897 }
 898 #endif /* CONFIG_XVMC || CONFIG_VDPAU */
 899
 900 const struct vd_functions mpcodecs_vd_ffmpeg = {
 901     .info = &info,
 902     .init = init,
 903     .uninit = uninit,
 904     .control = control,
 905     .decode2 = decode
 906 };