libmpcodecs/vd_ffmpeg.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <assert.h>
  22 #include <time.h>
  23 #include <stdbool.h>
  24
  25 #include "talloc.h"
  26 #include "config.h"
  27 #include "mp_msg.h"
  28 #include "options.h"
  29 #include "av_opts.h"
  30
  31 #include "libavutil/common.h"
  32 #include "ffmpeg_files/intreadwrite.h"
  33 #include "mpbswap.h"
  34 #include "fmt-conversion.h"
  35
  36 #include "vd.h"
  37 #include "img_format.h"
  38 #include "libmpdemux/stheader.h"
  39 #include "codec-cfg.h"
  40
  41 static const vd_info_t info = {
  42     "FFmpeg's libavcodec codec family",
  43     "ffmpeg",
  44     "A'rpi",
  45     "A'rpi, Michael, Alex",
  46     "native codecs"
  47 };
  48
  49 #include "libavcodec/avcodec.h"
  50
  51 #if AVPALETTE_SIZE > 1024
  52 #error palette too large, adapt libmpcodecs/vf.c:vf_get_image
  53 #endif
  54
  55 #if CONFIG_XVMC
  56 #include "libavcodec/xvmc.h"
  57 #endif
  58
  59 int avcodec_initialized=0;
  60
  61 typedef struct {
  62     AVCodecContext *avctx;
  63     AVFrame *pic;
  64     enum PixelFormat pix_fmt;
  65     int do_slices;
  66     int do_dr1;
  67     int vo_initialized;
  68     int best_csp;
  69     int b_age;
  70     int ip_age[2];
  71     int qp_stat[32];
  72     double qp_sum;
  73     double inv_qp_sum;
  74     int ip_count;
  75     int b_count;
  76     AVRational last_sample_aspect_ratio;
  77     int lowres;
  78 } vd_ffmpeg_ctx;
  79
  80 #include "m_option.h"
  81
  82 static int get_buffer(AVCodecContext *avctx, AVFrame *pic);
  83 static void release_buffer(AVCodecContext *avctx, AVFrame *pic);
  84 static void draw_slice(struct AVCodecContext *s, const AVFrame *src,
  85                        int offset[4], int y, int type, int height);
  86
  87 static enum PixelFormat get_format(struct AVCodecContext *avctx,
  88                                    const enum PixelFormat *pix_fmt);
  89 static void uninit(struct sh_video *sh);
  90
  91 const m_option_t lavc_decode_opts_conf[]={
  92     OPT_INTRANGE("bug", lavc_param.workaround_bugs, 0, -1, 999999),
  93     OPT_INTRANGE("er", lavc_param.error_resilience, 0, 0, 99),
  94     OPT_FLAG_ON("gray", lavc_param.gray, 0),
  95     OPT_INTRANGE("idct", lavc_param.idct_algo, 0, 0, 99),
  96     OPT_INTRANGE("ec", lavc_param.error_concealment, 0, 0, 99),
  97     OPT_FLAG_ON("vstats", lavc_param.vstats, 0),
  98     OPT_INTRANGE("debug", lavc_param.debug, 0, 0, 9999999),
  99     OPT_INTRANGE("vismv", lavc_param.vismv, 0, 0, 9999999),
 100     OPT_INTRANGE("st", lavc_param.skip_top, 0, 0, 999),
 101     OPT_INTRANGE("sb", lavc_param.skip_bottom, 0, 0, 999),
 102     OPT_FLAG_CONSTANTS("fast", lavc_param.fast, 0, 0, CODEC_FLAG2_FAST),
 103     OPT_STRING("lowres", lavc_param.lowres_str, 0),
 104     OPT_STRING("skiploopfilter", lavc_param.skip_loop_filter_str, 0),
 105     OPT_STRING("skipidct", lavc_param.skip_idct_str, 0),
 106     OPT_STRING("skipframe", lavc_param.skip_frame_str, 0),
 107     OPT_INTRANGE("threads", lavc_param.threads, 0, 1, 8),
 108     OPT_FLAG_CONSTANTS("bitexact", lavc_param.bitexact, 0, 0, CODEC_FLAG_BITEXACT),
 109     OPT_STRING("o", lavc_param.avopt, 0),
 110     {NULL, NULL, 0, 0, 0, 0, NULL}
 111 };
 112
 113 static enum AVDiscard str2AVDiscard(char *str) {
 114     if (!str)                               return AVDISCARD_DEFAULT;
 115     if (strcasecmp(str, "none"   ) == 0)    return AVDISCARD_NONE;
 116     if (strcasecmp(str, "default") == 0)    return AVDISCARD_DEFAULT;
 117     if (strcasecmp(str, "nonref" ) == 0)    return AVDISCARD_NONREF;
 118     if (strcasecmp(str, "bidir"  ) == 0)    return AVDISCARD_BIDIR;
 119     if (strcasecmp(str, "nonkey" ) == 0)    return AVDISCARD_NONKEY;
 120     if (strcasecmp(str, "all"    ) == 0)    return AVDISCARD_ALL;
 121     mp_msg(MSGT_DECVIDEO, MSGL_ERR, "Unknown discard value %s\n", str);
 122     return AVDISCARD_DEFAULT;
 123 }
 124
 125 // to set/get/query special features/parameters
 126 static int control(sh_video_t *sh, int cmd, void *arg, ...){
 127     vd_ffmpeg_ctx *ctx = sh->context;
 128     AVCodecContext *avctx = ctx->avctx;
 129     switch(cmd){
 130     case VDCTRL_QUERY_FORMAT:
 131     {
 132         int format =(*((int *)arg));
 133         if(format == ctx->best_csp) return CONTROL_TRUE;//supported
 134         // possible conversions:
 135         switch(format){
 136         case IMGFMT_YV12:
 137         case IMGFMT_IYUV:
 138         case IMGFMT_I420:
 139             // "converted" using pointer/stride modification
 140             if(avctx->pix_fmt==PIX_FMT_YUV420P) return CONTROL_TRUE;// u/v swap
 141             if(avctx->pix_fmt==PIX_FMT_YUV422P && !ctx->do_dr1) return CONTROL_TRUE;// half stride
 142             break;
 143 #if CONFIG_XVMC
 144         case IMGFMT_XVMC_IDCT_MPEG2:
 145         case IMGFMT_XVMC_MOCO_MPEG2:
 146             if(avctx->pix_fmt==PIX_FMT_XVMC_MPEG2_IDCT) return CONTROL_TRUE;
 147 #endif
 148         }
 149         return CONTROL_FALSE;
 150     }
 151     case VDCTRL_RESYNC_STREAM:
 152         avcodec_flush_buffers(avctx);
 153         return CONTROL_TRUE;
 154     case VDCTRL_QUERY_UNSEEN_FRAMES:;
 155         int delay = avctx->has_b_frames;
 156         return delay + 10;
 157     }
 158     return CONTROL_UNKNOWN;
 159 }
 160
 161 // init driver
 162 static int init(sh_video_t *sh){
 163     struct lavc_param *lavc_param = &sh->opts->lavc_param;
 164     AVCodecContext *avctx;
 165     vd_ffmpeg_ctx *ctx;
 166     AVCodec *lavc_codec;
 167     int lowres_w=0;
 168     int do_vis_debug= lavc_param->vismv || (lavc_param->debug&(FF_DEBUG_VIS_MB_TYPE|FF_DEBUG_VIS_QP));
 169
 170     if(!avcodec_initialized){
 171         avcodec_init();
 172         avcodec_register_all();
 173         avcodec_initialized=1;
 174     }
 175
 176     ctx = sh->context = talloc_zero(NULL, vd_ffmpeg_ctx);
 177
 178     ctx->last_sample_aspect_ratio = (AVRational){0, 1};
 179
 180     lavc_codec = avcodec_find_decoder_by_name(sh->codec->dll);
 181     if(!lavc_codec){
 182         mp_tmsg(MSGT_DECVIDEO, MSGL_ERR, "Cannot find codec '%s' in libavcodec...\n", sh->codec->dll);
 183         uninit(sh);
 184         return 0;
 185     }
 186
 187     if(sh->opts->vd_use_slices && (lavc_codec->capabilities&CODEC_CAP_DRAW_HORIZ_BAND) && !do_vis_debug)
 188         ctx->do_slices=1;
 189
 190     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 && lavc_codec->id != CODEC_ID_VP8)
 191         ctx->do_dr1=1;
 192     ctx->b_age= ctx->ip_age[0]= ctx->ip_age[1]= 256*256*256*64;
 193     ctx->ip_count= ctx->b_count= 0;
 194
 195     ctx->pic = avcodec_alloc_frame();
 196     ctx->avctx = avcodec_alloc_context();
 197     avctx = ctx->avctx;
 198     avctx->opaque = sh;
 199     avctx->codec_type = CODEC_TYPE_VIDEO;
 200     avctx->codec_id = lavc_codec->id;
 201
 202     if (lavc_codec->capabilities & CODEC_CAP_HWACCEL   // XvMC
 203         || lavc_codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) {
 204         ctx->do_dr1    = true;
 205         ctx->do_slices = true;
 206         lavc_param->threads    = 1;
 207         avctx->get_format      = get_format;
 208         avctx->get_buffer      = get_buffer;
 209         avctx->release_buffer  = release_buffer;
 210         avctx->reget_buffer    = get_buffer;
 211         avctx->draw_horiz_band = draw_slice;
 212         if (lavc_codec->capabilities & CODEC_CAP_HWACCEL)
 213             mp_msg(MSGT_DECVIDEO, MSGL_V, "[VD_FFMPEG] XVMC-accelerated "
 214                    "MPEG-2.\n");
 215         if (lavc_codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
 216             mp_msg(MSGT_DECVIDEO, MSGL_V, "[VD_FFMPEG] VDPAU hardware "
 217                    "decoding.\n");
 218         avctx->slice_flags = SLICE_FLAG_CODED_ORDER|SLICE_FLAG_ALLOW_FIELD;
 219     }
 220
 221     /* Our get_buffer and draw_horiz_band callbacks are not safe to call
 222      * from other threads. */
 223     if (lavc_param->threads > 1) {
 224         ctx->do_dr1 = false;
 225         ctx->do_slices = false;
 226     }
 227
 228     if(ctx->do_dr1){
 229         avctx->flags|= CODEC_FLAG_EMU_EDGE;
 230         avctx->get_buffer= get_buffer;
 231         avctx->release_buffer= release_buffer;
 232         avctx->reget_buffer= get_buffer;
 233     }
 234
 235     avctx->flags|= lavc_param->bitexact;
 236
 237     avctx->coded_width = sh->disp_w;
 238     avctx->coded_height= sh->disp_h;
 239     avctx->workaround_bugs= lavc_param->workaround_bugs;
 240     avctx->error_recognition= lavc_param->error_resilience;
 241     if(lavc_param->gray) avctx->flags|= CODEC_FLAG_GRAY;
 242     avctx->flags2|= lavc_param->fast;
 243     avctx->codec_tag= sh->format;
 244     avctx->stream_codec_tag= sh->video.fccHandler;
 245     avctx->idct_algo= lavc_param->idct_algo;
 246     avctx->error_concealment= lavc_param->error_concealment;
 247     avctx->debug= lavc_param->debug;
 248     if (lavc_param->debug)
 249         av_log_set_level(AV_LOG_DEBUG);
 250     avctx->debug_mv= lavc_param->vismv;
 251     avctx->skip_top   = lavc_param->skip_top;
 252     avctx->skip_bottom= lavc_param->skip_bottom;
 253     if(lavc_param->lowres_str != NULL)
 254     {
 255         sscanf(lavc_param->lowres_str, "%d,%d", &ctx->lowres, &lowres_w);
 256         if(ctx->lowres < 1 || ctx->lowres > 16 || (lowres_w > 0 && avctx->width < lowres_w))
 257             ctx->lowres = 0;
 258         avctx->lowres = ctx->lowres;
 259     }
 260     avctx->skip_loop_filter = str2AVDiscard(lavc_param->skip_loop_filter_str);
 261     avctx->skip_idct = str2AVDiscard(lavc_param->skip_idct_str);
 262     avctx->skip_frame = str2AVDiscard(lavc_param->skip_frame_str);
 263
 264     if(lavc_param->avopt){
 265         if(parse_avopts(avctx, lavc_param->avopt) < 0){
 266             mp_msg(MSGT_DECVIDEO, MSGL_ERR, "Your options /%s/ look like gibberish to me pal\n", lavc_param->avopt);
 267             uninit(sh);
 268             return 0;
 269         }
 270     }
 271
 272     mp_dbg(MSGT_DECVIDEO, MSGL_DBG2, "libavcodec.size: %d x %d\n", avctx->width, avctx->height);
 273     switch (sh->format) {
 274     case mmioFOURCC('S','V','Q','3'):
 275     /* SVQ3 extradata can show up as sh->ImageDesc if demux_mov is used, or
 276        in the phony AVI header if demux_lavf is used. The first case is
 277        handled here; the second case falls through to the next section. */
 278         if (sh->ImageDesc) {
 279             avctx->extradata_size = (*(int *)sh->ImageDesc) - sizeof(int);
 280             avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 281             memcpy(avctx->extradata, ((int *)sh->ImageDesc)+1, avctx->extradata_size);
 282             break;
 283         }
 284         /* fallthrough */
 285
 286     case mmioFOURCC('A','V','R','n'):
 287     case mmioFOURCC('M','J','P','G'):
 288     /* AVRn stores huffman table in AVI header */
 289     /* Pegasus MJPEG stores it also in AVI header, but it uses the common
 290        MJPG fourcc :( */
 291         if (!sh->bih || sh->bih->biSize <= sizeof(BITMAPINFOHEADER))
 292             break;
 293         avctx->flags |= CODEC_FLAG_EXTERN_HUFF;
 294         avctx->extradata_size = sh->bih->biSize-sizeof(BITMAPINFOHEADER);
 295         avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 296         memcpy(avctx->extradata, sh->bih+1, avctx->extradata_size);
 297
 298 #if 0
 299         {
 300             int x;
 301             uint8_t *p = avctx->extradata;
 302
 303             for (x=0; x<avctx->extradata_size; x++)
 304                 mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[%x] ", p[x]);
 305             mp_msg(MSGT_DECVIDEO, MSGL_INFO, "\n");
 306         }
 307 #endif
 308         break;
 309
 310     case mmioFOURCC('R', 'V', '1', '0'):
 311     case mmioFOURCC('R', 'V', '1', '3'):
 312     case mmioFOURCC('R', 'V', '2', '0'):
 313     case mmioFOURCC('R', 'V', '3', '0'):
 314     case mmioFOURCC('R', 'V', '4', '0'):
 315         if(sh->bih->biSize<sizeof(*sh->bih)+8){
 316             /* only 1 packet per frame & sub_id from fourcc */
 317             avctx->extradata_size= 8;
 318             avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 319             ((uint32_t *)avctx->extradata)[0] = 0;
 320             ((uint32_t *)avctx->extradata)[1] =
 321                 (sh->format == mmioFOURCC('R', 'V', '1', '3')) ? 0x10003001 : 0x10000000;
 322         } else {
 323             /* has extra slice header (demux_rm or rm->avi streamcopy) */
 324             avctx->extradata_size = sh->bih->biSize-sizeof(BITMAPINFOHEADER);
 325             avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 326             memcpy(avctx->extradata, sh->bih+1, avctx->extradata_size);
 327         }
 328         avctx->sub_id= AV_RB32(avctx->extradata+4);
 329
 330 //        printf("%X %X %d %d\n", extrahdr[0], extrahdr[1]);
 331         break;
 332
 333     default:
 334         if (!sh->bih || sh->bih->biSize <= sizeof(BITMAPINFOHEADER))
 335             break;
 336         avctx->extradata_size = sh->bih->biSize-sizeof(BITMAPINFOHEADER);
 337         avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 338         memcpy(avctx->extradata, sh->bih+1, avctx->extradata_size);
 339         break;
 340     }
 341     /* Pass palette to codec */
 342     if (sh->bih && (sh->bih->biBitCount <= 8)) {
 343         avctx->palctrl = calloc(1, sizeof(AVPaletteControl));
 344         avctx->palctrl->palette_changed = 1;
 345         if (sh->bih->biSize-sizeof(BITMAPINFOHEADER))
 346             /* Palette size in biSize */
 347             memcpy(avctx->palctrl->palette, sh->bih+1,
 348                    FFMIN(sh->bih->biSize-sizeof(BITMAPINFOHEADER), AVPALETTE_SIZE));
 349         else
 350             /* Palette size in biClrUsed */
 351             memcpy(avctx->palctrl->palette, sh->bih+1,
 352                    FFMIN(sh->bih->biClrUsed * 4, AVPALETTE_SIZE));
 353         }
 354
 355     if(sh->bih)
 356         avctx->bits_per_coded_sample= sh->bih->biBitCount;
 357
 358     if(lavc_param->threads > 1)
 359         avcodec_thread_init(avctx, lavc_param->threads);
 360     /* open it */
 361     if (avcodec_open(avctx, lavc_codec) < 0) {
 362         mp_tmsg(MSGT_DECVIDEO, MSGL_ERR, "Could not open codec.\n");
 363         uninit(sh);
 364         return 0;
 365     }
 366     mp_msg(MSGT_DECVIDEO, MSGL_V, "INFO: libavcodec init OK!\n");
 367     return 1; //mpcodecs_config_vo(sh, sh->disp_w, sh->disp_h, IMGFMT_YV12);
 368 }
 369
 370 // uninit driver
 371 static void uninit(sh_video_t *sh){
 372     vd_ffmpeg_ctx *ctx = sh->context;
 373     AVCodecContext *avctx = ctx->avctx;
 374
 375     if(sh->opts->lavc_param.vstats){
 376         int i;
 377         for(i=1; i<32; i++){
 378             mp_msg(MSGT_DECVIDEO, MSGL_INFO, "QP: %d, count: %d\n", i, ctx->qp_stat[i]);
 379         }
 380         mp_tmsg(MSGT_DECVIDEO, MSGL_INFO, "[VD_FFMPEG] Arithmetic mean of QP: %2.4f, Harmonic mean of QP: %2.4f\n",
 381             ctx->qp_sum / avctx->coded_frame->coded_picture_number,
 382             1.0/(ctx->inv_qp_sum / avctx->coded_frame->coded_picture_number)
 383             );
 384     }
 385
 386     if (avctx) {
 387         if (avctx->codec && avcodec_close(avctx) < 0)
 388             mp_tmsg(MSGT_DECVIDEO, MSGL_ERR, "Could not close codec.\n");
 389
 390         av_freep(&avctx->extradata);
 391         free(avctx->palctrl);
 392         av_freep(&avctx->slice_offset);
 393     }
 394
 395     av_freep(&avctx);
 396     av_freep(&ctx->pic);
 397     talloc_free(ctx);
 398 }
 399
 400 static void draw_slice(struct AVCodecContext *s,
 401                        const AVFrame *src, int offset[4],
 402                        int y, int type, int height){
 403     sh_video_t *sh = s->opaque;
 404     uint8_t *source[MP_MAX_PLANES]= {src->data[0] + offset[0], src->data[1] + offset[1], src->data[2] + offset[2]};
 405     int strides[MP_MAX_PLANES] = {src->linesize[0], src->linesize[1], src->linesize[2]};
 406 #if 0
 407     int start=0, i;
 408     int width= s->width;
 409     vd_ffmpeg_ctx *ctx = sh->context;
 410     int skip_stride= ((width << ctx->lowres)+15)>>4;
 411     uint8_t *skip= &s->coded_frame->mbskip_table[(y>>4)*skip_stride];
 412     int threshold= s->coded_frame->age;
 413     if(s->pict_type!=B_TYPE){
 414         for(i=0; i*16<width+16; i++){
 415             if(i*16>=width || skip[i]>=threshold){
 416                 if(start==i) start++;
 417                 else{
 418                     uint8_t *src2[3]= {src[0] + start*16,
 419                                      src[1] + start*8,
 420                                      src[2] + start*8};
 421 //printf("%2d-%2d x %d\n", start, i, y);
 422                     mpcodecs_draw_slice (sh, src2, stride, (i-start)*16, height, start*16, y);
 423                     start= i+1;
 424                 }
 425             }
 426         }
 427     }else
 428 #endif
 429     if (height < 0)
 430     {
 431         int i;
 432         height = -height;
 433         y -= height;
 434         for (i = 0; i < MP_MAX_PLANES; i++)
 435         {
 436             strides[i] = -strides[i];
 437             source[i] -= strides[i];
 438         }
 439     }
 440     if (y < sh->disp_h) {
 441         height = FFMIN(height, sh->disp_h-y);
 442         mpcodecs_draw_slice (sh, source, strides, sh->disp_w, height, 0, y);
 443     }
 444 }
 445
 446
 447 static int init_vo(sh_video_t *sh, enum PixelFormat pix_fmt){
 448     vd_ffmpeg_ctx *ctx = sh->context;
 449     AVCodecContext *avctx = ctx->avctx;
 450     float aspect= av_q2d(avctx->sample_aspect_ratio) * avctx->width / avctx->height;
 451     int width, height;
 452
 453     width = avctx->width;
 454     height = avctx->height;
 455
 456     // HACK!
 457     // if sh->ImageDesc is non-NULL, it means we decode QuickTime(tm) video.
 458     // use dimensions from BIH to avoid black borders at the right and bottom.
 459     if (sh->bih && sh->ImageDesc) {
 460         width = sh->bih->biWidth >> ctx->lowres;
 461         height = sh->bih->biHeight >> ctx->lowres;
 462     }
 463
 464      // it is possible another vo buffers to be used after vo config()
 465      // lavc reset its buffers on width/heigh change but not on aspect change!!!
 466     if (av_cmp_q(avctx->sample_aspect_ratio, ctx->last_sample_aspect_ratio) ||
 467         width != sh->disp_w  ||
 468         height != sh->disp_h ||
 469         pix_fmt != ctx->pix_fmt ||
 470         !ctx->vo_initialized)
 471     {
 472         mp_msg(MSGT_DECVIDEO, MSGL_V, "[ffmpeg] aspect_ratio: %f\n", aspect);
 473         if (sh->aspect == 0 ||
 474             av_cmp_q(avctx->sample_aspect_ratio,
 475                      ctx->last_sample_aspect_ratio))
 476             sh->aspect = aspect;
 477         ctx->last_sample_aspect_ratio = avctx->sample_aspect_ratio;
 478         sh->disp_w = width;
 479         sh->disp_h = height;
 480         ctx->pix_fmt = pix_fmt;
 481         ctx->best_csp = pixfmt2imgfmt(pix_fmt);
 482         if (!mpcodecs_config_vo(sh, sh->disp_w, sh->disp_h, ctx->best_csp))
 483             return -1;
 484         ctx->vo_initialized = 1;
 485     }
 486     return 0;
 487 }
 488
 489 static int get_buffer(AVCodecContext *avctx, AVFrame *pic){
 490     sh_video_t *sh = avctx->opaque;
 491     vd_ffmpeg_ctx *ctx = sh->context;
 492     mp_image_t *mpi=NULL;
 493     int flags= MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE;
 494     int type= MP_IMGTYPE_IPB;
 495     int width= avctx->width;
 496     int height= avctx->height;
 497     avcodec_align_dimensions(avctx, &width, &height);
 498 //printf("get_buffer %d %d %d\n", pic->reference, ctx->ip_count, ctx->b_count);
 499
 500     if (pic->buffer_hints) {
 501         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "Buffer hints: %u\n", pic->buffer_hints);
 502         type = MP_IMGTYPE_TEMP;
 503         if (pic->buffer_hints & FF_BUFFER_HINTS_READABLE)
 504             flags |= MP_IMGFLAG_READABLE;
 505         if (pic->buffer_hints & FF_BUFFER_HINTS_PRESERVE) {
 506             type = MP_IMGTYPE_STATIC;
 507             flags |= MP_IMGFLAG_PRESERVE;
 508         }
 509         if (pic->buffer_hints & FF_BUFFER_HINTS_REUSABLE) {
 510             type = MP_IMGTYPE_STATIC;
 511             flags |= MP_IMGFLAG_PRESERVE;
 512         }
 513         flags|=(!avctx->hurry_up && ctx->do_slices) ?
 514                  MP_IMGFLAG_DRAW_CALLBACK:0;
 515         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, type == MP_IMGTYPE_STATIC ? "using STATIC\n" : "using TEMP\n");
 516     } else {
 517         if(!pic->reference){
 518             ctx->b_count++;
 519             flags|=(!avctx->hurry_up && ctx->do_slices) ?
 520                      MP_IMGFLAG_DRAW_CALLBACK:0;
 521         }else{
 522             ctx->ip_count++;
 523             flags|= MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE
 524                       | (ctx->do_slices ? MP_IMGFLAG_DRAW_CALLBACK : 0);
 525         }
 526     }
 527
 528     if(init_vo(sh, avctx->pix_fmt) < 0){
 529         avctx->release_buffer= avcodec_default_release_buffer;
 530         avctx->get_buffer= avcodec_default_get_buffer;
 531         return avctx->get_buffer(avctx, pic);
 532     }
 533
 534     if (IMGFMT_IS_XVMC(ctx->best_csp) || IMGFMT_IS_VDPAU(ctx->best_csp)) {
 535         type =  MP_IMGTYPE_NUMBERED | (0xffff << 16);
 536     } else
 537     if (!pic->buffer_hints) {
 538         if(ctx->b_count>1 || ctx->ip_count>2){
 539             mp_tmsg(MSGT_DECVIDEO, MSGL_WARN, "[VD_FFMPEG] DRI failure.\n");
 540
 541             ctx->do_dr1=0; //FIXME
 542             avctx->get_buffer= avcodec_default_get_buffer;
 543             return avctx->get_buffer(avctx, pic);
 544         }
 545
 546         if(avctx->has_b_frames){
 547             type= MP_IMGTYPE_IPB;
 548         }else{
 549             type= MP_IMGTYPE_IP;
 550         }
 551         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, type== MP_IMGTYPE_IPB ? "using IPB\n" : "using IP\n");
 552     }
 553
 554     if (ctx->best_csp == IMGFMT_RGB8 || ctx->best_csp == IMGFMT_BGR8)
 555         flags |= MP_IMGFLAG_RGB_PALETTE;
 556     mpi= mpcodecs_get_image(sh, type, flags, width, height);
 557     if (!mpi) return -1;
 558
 559     // ok, let's see what did we get:
 560     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK &&
 561        !(mpi->flags&MP_IMGFLAG_DIRECT)){
 562         // nice, filter/vo likes draw_callback :)
 563         avctx->draw_horiz_band= draw_slice;
 564     } else
 565         avctx->draw_horiz_band= NULL;
 566     if(IMGFMT_IS_VDPAU(mpi->imgfmt)) {
 567         avctx->draw_horiz_band= draw_slice;
 568     }
 569 #if CONFIG_XVMC
 570     if(IMGFMT_IS_XVMC(mpi->imgfmt)) {
 571         struct xvmc_pix_fmt *render = mpi->priv; //same as data[2]
 572         avctx->draw_horiz_band= draw_slice;
 573         if(!avctx->xvmc_acceleration) {
 574             mp_tmsg(MSGT_DECVIDEO, MSGL_INFO, "[VD_FFMPEG] The mc_get_buffer should work only with XVMC acceleration!!");
 575             assert(0);
 576             exit(1);
 577 //            return -1;//!!fixme check error conditions in ffmpeg
 578         }
 579         if(!(mpi->flags & MP_IMGFLAG_DIRECT)) {
 580             mp_tmsg(MSGT_DECVIDEO, MSGL_ERR, "[VD_FFMPEG] Only buffers allocated by vo_xvmc allowed.\n");
 581             assert(0);
 582             exit(1);
 583 //            return -1;//!!fixme check error conditions in ffmpeg
 584         }
 585         if(mp_msg_test(MSGT_DECVIDEO, MSGL_DBG5))
 586             mp_msg(MSGT_DECVIDEO, MSGL_DBG5, "vd_ffmpeg::get_buffer (xvmc render=%p)\n", render);
 587         assert(render != 0);
 588         assert(render->xvmc_id == AV_XVMC_ID);
 589         render->state |= AV_XVMC_STATE_PREDICTION;
 590     }
 591 #endif
 592
 593     pic->data[0]= mpi->planes[0];
 594     pic->data[1]= mpi->planes[1];
 595     pic->data[2]= mpi->planes[2];
 596     pic->data[3]= mpi->planes[3];
 597
 598 #if 0
 599     assert(mpi->width >= ((width +align)&(~align)));
 600     assert(mpi->height >= ((height+align)&(~align)));
 601     assert(mpi->stride[0] >= mpi->width);
 602     if(mpi->imgfmt==IMGFMT_I420 || mpi->imgfmt==IMGFMT_YV12 || mpi->imgfmt==IMGFMT_IYUV){
 603         const int y_size= mpi->stride[0] * (mpi->h-1) + mpi->w;
 604         const int c_size= mpi->stride[1] * ((mpi->h>>1)-1) + (mpi->w>>1);
 605
 606         assert(mpi->planes[0] > mpi->planes[1] || mpi->planes[0] + y_size <= mpi->planes[1]);
 607         assert(mpi->planes[0] > mpi->planes[2] || mpi->planes[0] + y_size <= mpi->planes[2]);
 608         assert(mpi->planes[1] > mpi->planes[0] || mpi->planes[1] + c_size <= mpi->planes[0]);
 609         assert(mpi->planes[1] > mpi->planes[2] || mpi->planes[1] + c_size <= mpi->planes[2]);
 610         assert(mpi->planes[2] > mpi->planes[0] || mpi->planes[2] + c_size <= mpi->planes[0]);
 611         assert(mpi->planes[2] > mpi->planes[1] || mpi->planes[2] + c_size <= mpi->planes[1]);
 612     }
 613 #endif
 614
 615     /* Note, some (many) codecs in libavcodec must have stride1==stride2 && no changes between frames
 616      * lavc will check that and die with an error message, if its not true
 617      */
 618     pic->linesize[0]= mpi->stride[0];
 619     pic->linesize[1]= mpi->stride[1];
 620     pic->linesize[2]= mpi->stride[2];
 621     pic->linesize[3]= mpi->stride[3];
 622
 623     pic->opaque = mpi;
 624 //printf("%X\n", (int)mpi->planes[0]);
 625 #if 0
 626 if(mpi->flags&MP_IMGFLAG_DIRECT)
 627     printf("D");
 628 else if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 629     printf("S");
 630 else
 631     printf(".");
 632 #endif
 633     if(pic->reference){
 634         pic->age= ctx->ip_age[0];
 635
 636         ctx->ip_age[0]= ctx->ip_age[1]+1;
 637         ctx->ip_age[1]= 1;
 638         ctx->b_age++;
 639     }else{
 640         pic->age= ctx->b_age;
 641
 642         ctx->ip_age[0]++;
 643         ctx->ip_age[1]++;
 644         ctx->b_age=1;
 645     }
 646     pic->type= FF_BUFFER_TYPE_USER;
 647
 648     /* The libavcodec reordered_opaque functionality is implemented by
 649      * a similar copy in avcodec_default_get_buffer() and without a
 650      * workaround like this it'd stop working when a custom buffer
 651      * callback is used.
 652      */
 653     pic->reordered_opaque = avctx->reordered_opaque;
 654     return 0;
 655 }
 656
 657 static void release_buffer(struct AVCodecContext *avctx, AVFrame *pic){
 658     mp_image_t *mpi= pic->opaque;
 659     sh_video_t *sh = avctx->opaque;
 660     vd_ffmpeg_ctx *ctx = sh->context;
 661     int i;
 662
 663 //printf("release buffer %d %d %d\n", mpi ? mpi->flags&MP_IMGFLAG_PRESERVE : -99, ctx->ip_count, ctx->b_count);
 664
 665     if(ctx->ip_count <= 2 && ctx->b_count<=1){
 666         if(mpi->flags&MP_IMGFLAG_PRESERVE)
 667             ctx->ip_count--;
 668         else
 669             ctx->b_count--;
 670     }
 671
 672     if (mpi) {
 673         // Palette support: free palette buffer allocated in get_buffer
 674         if (mpi->bpp == 8)
 675             av_freep(&mpi->planes[1]);
 676 #if CONFIG_XVMC
 677         if (IMGFMT_IS_XVMC(mpi->imgfmt)) {
 678             struct xvmc_pix_fmt *render = (struct xvmc_pix_fmt*)pic->data[2]; //same as mpi->priv
 679             if(mp_msg_test(MSGT_DECVIDEO, MSGL_DBG5))
 680                 mp_msg(MSGT_DECVIDEO, MSGL_DBG5, "vd_ffmpeg::release_buffer (xvmc render=%p)\n", render);
 681             assert(render!=NULL);
 682             assert(render->xvmc_id == AV_XVMC_ID);
 683             render->state&=~AV_XVMC_STATE_PREDICTION;
 684         }
 685 #endif
 686         // release mpi (in case MPI_IMGTYPE_NUMBERED is used, e.g. for VDPAU)
 687         mpi->usage_count--;
 688     }
 689
 690     if(pic->type!=FF_BUFFER_TYPE_USER){
 691         avcodec_default_release_buffer(avctx, pic);
 692         return;
 693     }
 694
 695     for(i=0; i<4; i++){
 696         pic->data[i]= NULL;
 697     }
 698 //printf("R%X %X\n", pic->linesize[0], pic->data[0]);
 699 }
 700
 701 // copypaste from demux_real.c - it should match to get it working!
 702 //FIXME put into some header
 703 typedef struct dp_hdr_s {
 704     uint32_t chunks;        // number of chunks
 705     uint32_t timestamp; // timestamp from packet header
 706     uint32_t len;        // length of actual data
 707     uint32_t chunktab;        // offset to chunk offset array
 708 } dp_hdr_t;
 709
 710 static av_unused void swap_palette(void *pal)
 711 {
 712     int i;
 713     uint32_t *p = pal;
 714     for (i = 0; i < AVPALETTE_COUNT; i++)
 715         p[i] = le2me_32(p[i]);
 716 }
 717
 718 // decode a frame
 719 static struct mp_image *decode(struct sh_video *sh, void *data, int len,
 720                                int flags, double *reordered_pts)
 721 {
 722     int got_picture=0;
 723     int ret;
 724     vd_ffmpeg_ctx *ctx = sh->context;
 725     AVFrame *pic= ctx->pic;
 726     AVCodecContext *avctx = ctx->avctx;
 727     struct lavc_param *lavc_param = &sh->opts->lavc_param;
 728     mp_image_t *mpi=NULL;
 729     int dr1= ctx->do_dr1;
 730     AVPacket pkt;
 731
 732     if(len<=0) return NULL; // skipped frame
 733
 734 //ffmpeg interlace (mpeg2) bug have been fixed. no need of -noslices
 735     if (!dr1)
 736     avctx->draw_horiz_band=NULL;
 737     if(ctx->vo_initialized && !(flags&3) && !dr1){
 738         mpi=mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, MP_IMGFLAG_PRESERVE |
 739             (ctx->do_slices?MP_IMGFLAG_DRAW_CALLBACK:0),
 740             sh->disp_w, sh->disp_h);
 741         if(mpi && mpi->flags&MP_IMGFLAG_DRAW_CALLBACK){
 742             // vd core likes slices!
 743             avctx->draw_horiz_band=draw_slice;
 744         }
 745     }
 746
 747     if (flags & 2)
 748         avctx->skip_frame = AVDISCARD_ALL;
 749     else if (flags & 1)
 750         avctx->skip_frame = AVDISCARD_NONREF;
 751     else
 752         avctx->skip_frame = 0;
 753
 754     mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "vd_ffmpeg data: %04x, %04x, %04x, %04x\n",
 755            ((int *)data)[0], ((int *)data)[1], ((int *)data)[2], ((int *)data)[3]);
 756     av_init_packet(&pkt);
 757     pkt.data = data;
 758     pkt.size = len;
 759     // HACK: make PNGs decode normally instead of as CorePNG delta frames
 760     pkt.flags = PKT_FLAG_KEY;
 761     // The avcodec opaque field stupidly supports only int64_t type
 762     *(double *)&avctx->reordered_opaque = *reordered_pts;
 763     ret = avcodec_decode_video2(avctx, pic, &got_picture, &pkt);
 764     *reordered_pts = *(double *)&pic->reordered_opaque;
 765
 766     dr1= ctx->do_dr1;
 767     if(ret<0) mp_msg(MSGT_DECVIDEO, MSGL_WARN, "Error while decoding frame!\n");
 768 //printf("repeat: %d\n", pic->repeat_pict);
 769 //-- vstats generation
 770     while(lavc_param->vstats){ // always one time loop
 771         static FILE *fvstats=NULL;
 772         char filename[20];
 773         static long long int all_len=0;
 774         static int frame_number=0;
 775         static double all_frametime=0.0;
 776         AVFrame *pic= avctx->coded_frame;
 777         double quality=0.0;
 778
 779         if(!fvstats) {
 780             time_t today2;
 781             struct tm *today;
 782             today2 = time(NULL);
 783             today = localtime(&today2);
 784             sprintf(filename, "vstats_%02d%02d%02d.log", today->tm_hour,
 785                 today->tm_min, today->tm_sec);
 786             fvstats = fopen(filename, "w");
 787             if(!fvstats) {
 788                 perror("fopen");
 789                 lavc_param->vstats=0; // disable block
 790                 break;
 791                 /*exit(1);*/
 792             }
 793         }
 794
 795         // average MB quantizer
 796         {
 797             int x, y;
 798             int w = ((avctx->width  << ctx->lowres)+15) >> 4;
 799             int h = ((avctx->height << ctx->lowres)+15) >> 4;
 800             int8_t *q = pic->qscale_table;
 801             for(y = 0; y < h; y++) {
 802                 for(x = 0; x < w; x++)
 803                     quality += (double)*(q+x);
 804                 q += pic->qstride;
 805             }
 806             quality /= w * h;
 807         }
 808
 809         all_len+=len;
 810         all_frametime+=sh->frametime;
 811         fprintf(fvstats, "frame= %5d q= %2.2f f_size= %6d s_size= %8.0fkB ",
 812             ++frame_number, quality, len, (double)all_len/1024);
 813         fprintf(fvstats, "time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
 814            all_frametime, (double)(len*8)/sh->frametime/1000.0,
 815            (double)(all_len*8)/all_frametime/1000.0);
 816         switch(pic->pict_type){
 817         case FF_I_TYPE:
 818             fprintf(fvstats, "type= I\n");
 819             break;
 820         case FF_P_TYPE:
 821             fprintf(fvstats, "type= P\n");
 822             break;
 823         case FF_S_TYPE:
 824             fprintf(fvstats, "type= S\n");
 825             break;
 826         case FF_B_TYPE:
 827             fprintf(fvstats, "type= B\n");
 828             break;
 829         default:
 830             fprintf(fvstats, "type= ? (%d)\n", pic->pict_type);
 831             break;
 832         }
 833
 834         ctx->qp_stat[(int)(quality+0.5)]++;
 835         ctx->qp_sum += quality;
 836         ctx->inv_qp_sum += 1.0/(double)quality;
 837
 838         break;
 839     }
 840 //--
 841
 842     if(!got_picture) return NULL;        // skipped image
 843
 844     if(init_vo(sh, avctx->pix_fmt) < 0) return NULL;
 845
 846     if(dr1 && pic->opaque){
 847         mpi= (mp_image_t *)pic->opaque;
 848     }
 849
 850     if(!mpi)
 851     mpi=mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, MP_IMGFLAG_PRESERVE,
 852         avctx->width, avctx->height);
 853     if(!mpi){        // temporary!
 854         mp_tmsg(MSGT_DECVIDEO, MSGL_WARN, "[VD_FFMPEG] Couldn't allocate image for codec.\n");
 855         return NULL;
 856     }
 857
 858     if(!dr1){
 859         mpi->planes[0]=pic->data[0];
 860         mpi->planes[1]=pic->data[1];
 861         mpi->planes[2]=pic->data[2];
 862         mpi->planes[3]=pic->data[3];
 863         mpi->stride[0]=pic->linesize[0];
 864         mpi->stride[1]=pic->linesize[1];
 865         mpi->stride[2]=pic->linesize[2];
 866         mpi->stride[3]=pic->linesize[3];
 867     }
 868
 869     if (!mpi->planes[0])
 870         return NULL;
 871
 872     if(avctx->pix_fmt==PIX_FMT_YUV422P && mpi->chroma_y_shift==1){
 873         // we have 422p but user wants 420p
 874         mpi->stride[1]*=2;
 875         mpi->stride[2]*=2;
 876     }
 877
 878 #if HAVE_BIGENDIAN
 879     // FIXME: this might cause problems for buffers with FF_BUFFER_HINTS_PRESERVE
 880     if (mpi->bpp == 8)
 881         swap_palette(mpi->planes[1]);
 882 #endif
 883 /* to comfirm with newer lavc style */
 884     mpi->qscale =pic->qscale_table;
 885     mpi->qstride=pic->qstride;
 886     mpi->pict_type=pic->pict_type;
 887     mpi->qscale_type= pic->qscale_type;
 888     mpi->fields = MP_IMGFIELD_ORDERED;
 889     if(pic->interlaced_frame) mpi->fields |= MP_IMGFIELD_INTERLACED;
 890     if(pic->top_field_first ) mpi->fields |= MP_IMGFIELD_TOP_FIRST;
 891     if(pic->repeat_pict == 1) mpi->fields |= MP_IMGFIELD_REPEAT_FIRST;
 892
 893     return mpi;
 894 }
 895
 896 static enum PixelFormat get_format(struct AVCodecContext *avctx,
 897                                     const enum PixelFormat *fmt){
 898     enum PixelFormat selected_format;
 899     int imgfmt;
 900     sh_video_t *sh = avctx->opaque;
 901     int i;
 902
 903     for(i=0;fmt[i]!=PIX_FMT_NONE;i++){
 904         imgfmt = pixfmt2imgfmt(fmt[i]);
 905         if(!IMGFMT_IS_XVMC(imgfmt) && !IMGFMT_IS_VDPAU(imgfmt)) continue;
 906         mp_msg(MSGT_DECVIDEO, MSGL_V, "[VD_FFMPEG] Trying pixfmt=%d.\n", i);
 907         if(init_vo(sh, fmt[i]) >= 0) {
 908             break;
 909         }
 910     }
 911     selected_format = fmt[i];
 912     return selected_format;
 913 }
 914
 915 const struct vd_functions mpcodecs_vd_ffmpeg = {
 916     .info = &info,
 917     .init = init,
 918     .uninit = uninit,
 919     .control = control,
 920     .decode2 = decode
 921 };