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 #include "vd_ffmpeg.h"
  41
  42 static const vd_info_t info = {
  43     "FFmpeg's libavcodec codec family",
  44     "ffmpeg",
  45     "A'rpi",
  46     "A'rpi, Michael, Alex",
  47     "native codecs"
  48 };
  49
  50 #include "libavcodec/avcodec.h"
  51
  52 #if AVPALETTE_SIZE > 1024
  53 #error palette too large, adapt libmpcodecs/vf.c:vf_get_image
  54 #endif
  55
  56 #if CONFIG_XVMC
  57 #include "libavcodec/xvmc.h"
  58 #endif
  59
  60 int avcodec_initialized=0;
  61
  62 typedef struct {
  63     AVCodecContext *avctx;
  64     AVFrame *pic;
  65     enum PixelFormat pix_fmt;
  66     int do_slices;
  67     int do_dr1;
  68     int vo_initialized;
  69     int best_csp;
  70     int b_age;
  71     int ip_age[2];
  72     int qp_stat[32];
  73     double qp_sum;
  74     double inv_qp_sum;
  75     int ip_count;
  76     int b_count;
  77     AVRational last_sample_aspect_ratio;
  78     int lowres;
  79 } vd_ffmpeg_ctx;
  80
  81 #include "m_option.h"
  82
  83 static int get_buffer(AVCodecContext *avctx, AVFrame *pic);
  84 static void release_buffer(AVCodecContext *avctx, AVFrame *pic);
  85 static void draw_slice(struct AVCodecContext *s, const AVFrame *src,
  86                        int offset[4], int y, int type, int height);
  87
  88 static enum PixelFormat get_format(struct AVCodecContext *avctx,
  89                                    const enum PixelFormat *pix_fmt);
  90 static void uninit(struct sh_video *sh);
  91
  92 const m_option_t lavc_decode_opts_conf[]={
  93     OPT_INTRANGE("bug", lavc_param.workaround_bugs, 0, -1, 999999),
  94     OPT_INTRANGE("er", lavc_param.error_resilience, 0, 0, 99),
  95     OPT_FLAG_ON("gray", lavc_param.gray, 0),
  96     OPT_INTRANGE("idct", lavc_param.idct_algo, 0, 0, 99),
  97     OPT_INTRANGE("ec", lavc_param.error_concealment, 0, 0, 99),
  98     OPT_FLAG_ON("vstats", lavc_param.vstats, 0),
  99     OPT_INTRANGE("debug", lavc_param.debug, 0, 0, 9999999),
 100     OPT_INTRANGE("vismv", lavc_param.vismv, 0, 0, 9999999),
 101     OPT_INTRANGE("st", lavc_param.skip_top, 0, 0, 999),
 102     OPT_INTRANGE("sb", lavc_param.skip_bottom, 0, 0, 999),
 103     OPT_FLAG_CONSTANTS("fast", lavc_param.fast, 0, 0, CODEC_FLAG2_FAST),
 104     OPT_STRING("lowres", lavc_param.lowres_str, 0),
 105     OPT_STRING("skiploopfilter", lavc_param.skip_loop_filter_str, 0),
 106     OPT_STRING("skipidct", lavc_param.skip_idct_str, 0),
 107     OPT_STRING("skipframe", lavc_param.skip_frame_str, 0),
 108     OPT_INTRANGE("threads", lavc_param.threads, 0, 1, 8),
 109     OPT_FLAG_CONSTANTS("bitexact", lavc_param.bitexact, 0, 0, CODEC_FLAG_BITEXACT),
 110     OPT_STRING("o", lavc_param.avopt, 0),
 111     {NULL, NULL, 0, 0, 0, 0, NULL}
 112 };
 113
 114 static enum AVDiscard str2AVDiscard(char *str) {
 115     if (!str)                               return AVDISCARD_DEFAULT;
 116     if (strcasecmp(str, "none"   ) == 0)    return AVDISCARD_NONE;
 117     if (strcasecmp(str, "default") == 0)    return AVDISCARD_DEFAULT;
 118     if (strcasecmp(str, "nonref" ) == 0)    return AVDISCARD_NONREF;
 119     if (strcasecmp(str, "bidir"  ) == 0)    return AVDISCARD_BIDIR;
 120     if (strcasecmp(str, "nonkey" ) == 0)    return AVDISCARD_NONKEY;
 121     if (strcasecmp(str, "all"    ) == 0)    return AVDISCARD_ALL;
 122     mp_msg(MSGT_DECVIDEO, MSGL_ERR, "Unknown discard value %s\n", str);
 123     return AVDISCARD_DEFAULT;
 124 }
 125
 126 // to set/get/query special features/parameters
 127 static int control(sh_video_t *sh, int cmd, void *arg, ...){
 128     vd_ffmpeg_ctx *ctx = sh->context;
 129     AVCodecContext *avctx = ctx->avctx;
 130     switch(cmd){
 131     case VDCTRL_QUERY_FORMAT:
 132     {
 133         int format =(*((int *)arg));
 134         if(format == ctx->best_csp) return CONTROL_TRUE;//supported
 135         // possible conversions:
 136         switch(format){
 137         case IMGFMT_YV12:
 138         case IMGFMT_IYUV:
 139         case IMGFMT_I420:
 140             // "converted" using pointer/stride modification
 141             if(ctx->best_csp == IMGFMT_YV12) return CONTROL_TRUE;// u/v swap
 142             if(ctx->best_csp == IMGFMT_422P && !ctx->do_dr1) return CONTROL_TRUE;// half stride
 143             break;
 144 #if CONFIG_XVMC
 145         case IMGFMT_XVMC_IDCT_MPEG2:
 146         case IMGFMT_XVMC_MOCO_MPEG2:
 147             if(avctx->pix_fmt==PIX_FMT_XVMC_MPEG2_IDCT) return CONTROL_TRUE;
 148 #endif
 149         }
 150         return CONTROL_FALSE;
 151     }
 152     case VDCTRL_RESYNC_STREAM:
 153         avcodec_flush_buffers(avctx);
 154         return CONTROL_TRUE;
 155     case VDCTRL_QUERY_UNSEEN_FRAMES:;
 156         int delay = avctx->has_b_frames;
 157         return delay + 10;
 158     }
 159     return CONTROL_UNKNOWN;
 160 }
 161
 162 void init_avcodec(void)
 163 {
 164     if (!avcodec_initialized) {
 165         avcodec_init();
 166         avcodec_register_all();
 167         avcodec_initialized = 1;
 168     }
 169 }
 170
 171 // init driver
 172 static int init(sh_video_t *sh){
 173     struct lavc_param *lavc_param = &sh->opts->lavc_param;
 174     AVCodecContext *avctx;
 175     vd_ffmpeg_ctx *ctx;
 176     AVCodec *lavc_codec;
 177     int lowres_w=0;
 178     int do_vis_debug= lavc_param->vismv || (lavc_param->debug&(FF_DEBUG_VIS_MB_TYPE|FF_DEBUG_VIS_QP));
 179
 180     init_avcodec();
 181
 182     ctx = sh->context = talloc_zero(NULL, vd_ffmpeg_ctx);
 183
 184     lavc_codec = avcodec_find_decoder_by_name(sh->codec->dll);
 185     if(!lavc_codec){
 186         mp_tmsg(MSGT_DECVIDEO, MSGL_ERR, "Cannot find codec '%s' in libavcodec...\n", sh->codec->dll);
 187         uninit(sh);
 188         return 0;
 189     }
 190
 191     if(sh->opts->vd_use_slices && (lavc_codec->capabilities&CODEC_CAP_DRAW_HORIZ_BAND) && !do_vis_debug)
 192         ctx->do_slices=1;
 193
 194     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)
 195         ctx->do_dr1=1;
 196     ctx->b_age= ctx->ip_age[0]= ctx->ip_age[1]= 256*256*256*64;
 197     ctx->ip_count= ctx->b_count= 0;
 198
 199     ctx->pic = avcodec_alloc_frame();
 200     ctx->avctx = avcodec_alloc_context();
 201     avctx = ctx->avctx;
 202     avctx->opaque = sh;
 203     avctx->codec_type = CODEC_TYPE_VIDEO;
 204     avctx->codec_id = lavc_codec->id;
 205
 206     if (lavc_codec->capabilities & CODEC_CAP_HWACCEL   // XvMC
 207         || lavc_codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) {
 208         ctx->do_dr1    = true;
 209         ctx->do_slices = true;
 210         lavc_param->threads    = 1;
 211         avctx->get_format      = get_format;
 212         avctx->get_buffer      = get_buffer;
 213         avctx->release_buffer  = release_buffer;
 214         avctx->reget_buffer    = get_buffer;
 215         avctx->draw_horiz_band = draw_slice;
 216         if (lavc_codec->capabilities & CODEC_CAP_HWACCEL)
 217             mp_msg(MSGT_DECVIDEO, MSGL_V, "[VD_FFMPEG] XVMC-accelerated "
 218                    "MPEG-2.\n");
 219         if (lavc_codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
 220             mp_msg(MSGT_DECVIDEO, MSGL_V, "[VD_FFMPEG] VDPAU hardware "
 221                    "decoding.\n");
 222         avctx->slice_flags = SLICE_FLAG_CODED_ORDER|SLICE_FLAG_ALLOW_FIELD;
 223     }
 224
 225     /* Our get_buffer and draw_horiz_band callbacks are not safe to call
 226      * from other threads. */
 227     if (lavc_param->threads > 1) {
 228         ctx->do_dr1 = false;
 229         ctx->do_slices = false;
 230     }
 231
 232     if(ctx->do_dr1){
 233         avctx->flags|= CODEC_FLAG_EMU_EDGE;
 234         avctx->get_buffer= get_buffer;
 235         avctx->release_buffer= release_buffer;
 236         avctx->reget_buffer= get_buffer;
 237     }
 238
 239     avctx->flags|= lavc_param->bitexact;
 240
 241     avctx->coded_width = sh->disp_w;
 242     avctx->coded_height= sh->disp_h;
 243     avctx->workaround_bugs= lavc_param->workaround_bugs;
 244     avctx->error_recognition= lavc_param->error_resilience;
 245     if(lavc_param->gray) avctx->flags|= CODEC_FLAG_GRAY;
 246     avctx->flags2|= lavc_param->fast;
 247     avctx->codec_tag= sh->format;
 248     avctx->stream_codec_tag= sh->video.fccHandler;
 249     avctx->idct_algo= lavc_param->idct_algo;
 250     avctx->error_concealment= lavc_param->error_concealment;
 251     avctx->debug= lavc_param->debug;
 252     if (lavc_param->debug)
 253         av_log_set_level(AV_LOG_DEBUG);
 254     avctx->debug_mv= lavc_param->vismv;
 255     avctx->skip_top   = lavc_param->skip_top;
 256     avctx->skip_bottom= lavc_param->skip_bottom;
 257     if(lavc_param->lowres_str != NULL)
 258     {
 259         sscanf(lavc_param->lowres_str, "%d,%d", &ctx->lowres, &lowres_w);
 260         if(ctx->lowres < 1 || ctx->lowres > 16 || (lowres_w > 0 && avctx->width < lowres_w))
 261             ctx->lowres = 0;
 262         avctx->lowres = ctx->lowres;
 263     }
 264     avctx->skip_loop_filter = str2AVDiscard(lavc_param->skip_loop_filter_str);
 265     avctx->skip_idct = str2AVDiscard(lavc_param->skip_idct_str);
 266     avctx->skip_frame = str2AVDiscard(lavc_param->skip_frame_str);
 267
 268     if(lavc_param->avopt){
 269         if(parse_avopts(avctx, lavc_param->avopt) < 0){
 270             mp_msg(MSGT_DECVIDEO, MSGL_ERR, "Your options /%s/ look like gibberish to me pal\n", lavc_param->avopt);
 271             uninit(sh);
 272             return 0;
 273         }
 274     }
 275
 276     mp_dbg(MSGT_DECVIDEO, MSGL_DBG2, "libavcodec.size: %d x %d\n", avctx->width, avctx->height);
 277     switch (sh->format) {
 278     case mmioFOURCC('S','V','Q','3'):
 279     /* SVQ3 extradata can show up as sh->ImageDesc if demux_mov is used, or
 280        in the phony AVI header if demux_lavf is used. The first case is
 281        handled here; the second case falls through to the next section. */
 282         if (sh->ImageDesc) {
 283             avctx->extradata_size = (*(int *)sh->ImageDesc) - sizeof(int);
 284             avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 285             memcpy(avctx->extradata, ((int *)sh->ImageDesc)+1, avctx->extradata_size);
 286             break;
 287         }
 288         /* fallthrough */
 289
 290     case mmioFOURCC('A','V','R','n'):
 291     case mmioFOURCC('M','J','P','G'):
 292     /* AVRn stores huffman table in AVI header */
 293     /* Pegasus MJPEG stores it also in AVI header, but it uses the common
 294        MJPG fourcc :( */
 295         if (!sh->bih || sh->bih->biSize <= sizeof(*sh->bih))
 296             break;
 297         avctx->flags |= CODEC_FLAG_EXTERN_HUFF;
 298         avctx->extradata_size = sh->bih->biSize-sizeof(*sh->bih);
 299         avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 300         memcpy(avctx->extradata, sh->bih+1, avctx->extradata_size);
 301
 302 #if 0
 303         {
 304             int x;
 305             uint8_t *p = avctx->extradata;
 306
 307             for (x=0; x<avctx->extradata_size; x++)
 308                 mp_msg(MSGT_DECVIDEO, MSGL_INFO, "[%x] ", p[x]);
 309             mp_msg(MSGT_DECVIDEO, MSGL_INFO, "\n");
 310         }
 311 #endif
 312         break;
 313
 314     case mmioFOURCC('R', 'V', '1', '0'):
 315     case mmioFOURCC('R', 'V', '1', '3'):
 316     case mmioFOURCC('R', 'V', '2', '0'):
 317     case mmioFOURCC('R', 'V', '3', '0'):
 318     case mmioFOURCC('R', 'V', '4', '0'):
 319         if(sh->bih->biSize<sizeof(*sh->bih)+8){
 320             /* only 1 packet per frame & sub_id from fourcc */
 321             avctx->extradata_size= 8;
 322             avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 323             ((uint32_t *)avctx->extradata)[0] = 0;
 324             ((uint32_t *)avctx->extradata)[1] =
 325                 (sh->format == mmioFOURCC('R', 'V', '1', '3')) ? 0x10003001 : 0x10000000;
 326         } else {
 327             /* has extra slice header (demux_rm or rm->avi streamcopy) */
 328             avctx->extradata_size = sh->bih->biSize-sizeof(*sh->bih);
 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         avctx->sub_id= AV_RB32(avctx->extradata+4);
 333
 334 //        printf("%X %X %d %d\n", extrahdr[0], extrahdr[1]);
 335         break;
 336
 337     default:
 338         if (!sh->bih || sh->bih->biSize <= sizeof(*sh->bih))
 339             break;
 340         avctx->extradata_size = sh->bih->biSize-sizeof(*sh->bih);
 341         avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 342         memcpy(avctx->extradata, sh->bih+1, avctx->extradata_size);
 343         break;
 344     }
 345     /* Pass palette to codec */
 346     if (sh->bih && (sh->bih->biBitCount <= 8)) {
 347         avctx->palctrl = calloc(1, sizeof(AVPaletteControl));
 348         avctx->palctrl->palette_changed = 1;
 349         if (sh->bih->biSize-sizeof(*sh->bih))
 350             /* Palette size in biSize */
 351             memcpy(avctx->palctrl->palette, sh->bih+1,
 352                    FFMIN(sh->bih->biSize-sizeof(*sh->bih), AVPALETTE_SIZE));
 353         else
 354             /* Palette size in biClrUsed */
 355             memcpy(avctx->palctrl->palette, sh->bih+1,
 356                    FFMIN(sh->bih->biClrUsed * 4, AVPALETTE_SIZE));
 357         }
 358
 359     if(sh->bih)
 360         avctx->bits_per_coded_sample= sh->bih->biBitCount;
 361
 362     if(lavc_param->threads > 1)
 363         avcodec_thread_init(avctx, lavc_param->threads);
 364     /* open it */
 365     if (avcodec_open(avctx, lavc_codec) < 0) {
 366         mp_tmsg(MSGT_DECVIDEO, MSGL_ERR, "Could not open codec.\n");
 367         uninit(sh);
 368         return 0;
 369     }
 370     mp_msg(MSGT_DECVIDEO, MSGL_V, "INFO: libavcodec init OK!\n");
 371     return 1; //mpcodecs_config_vo(sh, sh->disp_w, sh->disp_h, IMGFMT_YV12);
 372 }
 373
 374 // uninit driver
 375 static void uninit(sh_video_t *sh){
 376     vd_ffmpeg_ctx *ctx = sh->context;
 377     AVCodecContext *avctx = ctx->avctx;
 378
 379     if(sh->opts->lavc_param.vstats){
 380         int i;
 381         for(i=1; i<32; i++){
 382             mp_msg(MSGT_DECVIDEO, MSGL_INFO, "QP: %d, count: %d\n", i, ctx->qp_stat[i]);
 383         }
 384         mp_tmsg(MSGT_DECVIDEO, MSGL_INFO, "[VD_FFMPEG] Arithmetic mean of QP: %2.4f, Harmonic mean of QP: %2.4f\n",
 385             ctx->qp_sum / avctx->coded_frame->coded_picture_number,
 386             1.0/(ctx->inv_qp_sum / avctx->coded_frame->coded_picture_number)
 387             );
 388     }
 389
 390     if (avctx) {
 391         if (avctx->codec && avcodec_close(avctx) < 0)
 392             mp_tmsg(MSGT_DECVIDEO, MSGL_ERR, "Could not close codec.\n");
 393
 394         av_freep(&avctx->extradata);
 395         free(avctx->palctrl);
 396         av_freep(&avctx->slice_offset);
 397     }
 398
 399     av_freep(&avctx);
 400     av_freep(&ctx->pic);
 401     talloc_free(ctx);
 402 }
 403
 404 static void draw_slice(struct AVCodecContext *s,
 405                        const AVFrame *src, int offset[4],
 406                        int y, int type, int height){
 407     sh_video_t *sh = s->opaque;
 408     uint8_t *source[MP_MAX_PLANES]= {src->data[0] + offset[0], src->data[1] + offset[1], src->data[2] + offset[2]};
 409     int strides[MP_MAX_PLANES] = {src->linesize[0], src->linesize[1], src->linesize[2]};
 410 #if 0
 411     int start=0, i;
 412     int width= s->width;
 413     vd_ffmpeg_ctx *ctx = sh->context;
 414     int skip_stride= ((width << ctx->lowres)+15)>>4;
 415     uint8_t *skip= &s->coded_frame->mbskip_table[(y>>4)*skip_stride];
 416     int threshold= s->coded_frame->age;
 417     if(s->pict_type!=B_TYPE){
 418         for(i=0; i*16<width+16; i++){
 419             if(i*16>=width || skip[i]>=threshold){
 420                 if(start==i) start++;
 421                 else{
 422                     uint8_t *src2[3]= {src[0] + start*16,
 423                                      src[1] + start*8,
 424                                      src[2] + start*8};
 425 //printf("%2d-%2d x %d\n", start, i, y);
 426                     mpcodecs_draw_slice (sh, src2, stride, (i-start)*16, height, start*16, y);
 427                     start= i+1;
 428                 }
 429             }
 430         }
 431     }else
 432 #endif
 433     if (height < 0)
 434     {
 435         int i;
 436         height = -height;
 437         y -= height;
 438         for (i = 0; i < MP_MAX_PLANES; i++)
 439         {
 440             strides[i] = -strides[i];
 441             source[i] -= strides[i];
 442         }
 443     }
 444     if (y < sh->disp_h) {
 445         height = FFMIN(height, sh->disp_h-y);
 446         mpcodecs_draw_slice (sh, source, strides, sh->disp_w, height, 0, y);
 447     }
 448 }
 449
 450
 451 static int init_vo(sh_video_t *sh, enum PixelFormat pix_fmt){
 452     vd_ffmpeg_ctx *ctx = sh->context;
 453     AVCodecContext *avctx = ctx->avctx;
 454     float aspect= av_q2d(avctx->sample_aspect_ratio) * avctx->width / avctx->height;
 455     int width, height;
 456
 457     width = avctx->width;
 458     height = avctx->height;
 459
 460     // HACK!
 461     // if sh->ImageDesc is non-NULL, it means we decode QuickTime(tm) video.
 462     // use dimensions from BIH to avoid black borders at the right and bottom.
 463     if (sh->bih && sh->ImageDesc) {
 464         width = sh->bih->biWidth >> ctx->lowres;
 465         height = sh->bih->biHeight >> ctx->lowres;
 466     }
 467
 468      // it is possible another vo buffers to be used after vo config()
 469      // lavc reset its buffers on width/heigh change but not on aspect change!!!
 470     if (av_cmp_q(avctx->sample_aspect_ratio, ctx->last_sample_aspect_ratio) ||
 471         width != sh->disp_w  ||
 472         height != sh->disp_h ||
 473         pix_fmt != ctx->pix_fmt ||
 474         !ctx->vo_initialized)
 475     {
 476         mp_msg(MSGT_DECVIDEO, MSGL_V, "[ffmpeg] aspect_ratio: %f\n", aspect);
 477
 478         // Do not overwrite s->aspect on the first call, so that a container
 479         // aspect if available is preferred.
 480         // But set it even if the sample aspect did not change, since a
 481         // resolution change can cause an aspect change even if the
 482         // _sample_ aspect is unchanged.
 483         if (sh->aspect == 0 || ctx->last_sample_aspect_ratio.den)
 484             sh->aspect = aspect;
 485         ctx->last_sample_aspect_ratio = avctx->sample_aspect_ratio;
 486         sh->disp_w = width;
 487         sh->disp_h = height;
 488         ctx->pix_fmt = pix_fmt;
 489         ctx->best_csp = pixfmt2imgfmt(pix_fmt);
 490         if (!mpcodecs_config_vo(sh, sh->disp_w, sh->disp_h, ctx->best_csp))
 491             return -1;
 492         ctx->vo_initialized = 1;
 493     }
 494     return 0;
 495 }
 496
 497 static int get_buffer(AVCodecContext *avctx, AVFrame *pic){
 498     sh_video_t *sh = avctx->opaque;
 499     vd_ffmpeg_ctx *ctx = sh->context;
 500     mp_image_t *mpi=NULL;
 501     int flags= MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE;
 502     int type= MP_IMGTYPE_IPB;
 503     int width= avctx->width;
 504     int height= avctx->height;
 505     avcodec_align_dimensions(avctx, &width, &height);
 506 //printf("get_buffer %d %d %d\n", pic->reference, ctx->ip_count, ctx->b_count);
 507
 508     if (pic->buffer_hints) {
 509         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "Buffer hints: %u\n", pic->buffer_hints);
 510         type = MP_IMGTYPE_TEMP;
 511         if (pic->buffer_hints & FF_BUFFER_HINTS_READABLE)
 512             flags |= MP_IMGFLAG_READABLE;
 513         if (pic->buffer_hints & FF_BUFFER_HINTS_PRESERVE) {
 514             type = MP_IMGTYPE_STATIC;
 515             flags |= MP_IMGFLAG_PRESERVE;
 516         }
 517         if (pic->buffer_hints & FF_BUFFER_HINTS_REUSABLE) {
 518             type = MP_IMGTYPE_STATIC;
 519             flags |= MP_IMGFLAG_PRESERVE;
 520         }
 521         flags|=(!avctx->hurry_up && ctx->do_slices) ?
 522                  MP_IMGFLAG_DRAW_CALLBACK:0;
 523         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, type == MP_IMGTYPE_STATIC ? "using STATIC\n" : "using TEMP\n");
 524     } else {
 525         if(!pic->reference){
 526             ctx->b_count++;
 527             flags|=(!avctx->hurry_up && ctx->do_slices) ?
 528                      MP_IMGFLAG_DRAW_CALLBACK:0;
 529         }else{
 530             ctx->ip_count++;
 531             flags|= MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE
 532                       | (ctx->do_slices ? MP_IMGFLAG_DRAW_CALLBACK : 0);
 533         }
 534     }
 535
 536     if(init_vo(sh, avctx->pix_fmt) < 0){
 537         avctx->release_buffer= avcodec_default_release_buffer;
 538         avctx->get_buffer= avcodec_default_get_buffer;
 539         return avctx->get_buffer(avctx, pic);
 540     }
 541
 542     if (IMGFMT_IS_HWACCEL(ctx->best_csp)) {
 543         type =  MP_IMGTYPE_NUMBERED | (0xffff << 16);
 544     } else
 545     if (!pic->buffer_hints) {
 546         if(ctx->b_count>1 || ctx->ip_count>2){
 547             mp_tmsg(MSGT_DECVIDEO, MSGL_WARN, "[VD_FFMPEG] DRI failure.\n");
 548
 549             ctx->do_dr1=0; //FIXME
 550             avctx->get_buffer= avcodec_default_get_buffer;
 551             return avctx->get_buffer(avctx, pic);
 552         }
 553
 554         if(avctx->has_b_frames){
 555             type= MP_IMGTYPE_IPB;
 556         }else{
 557             type= MP_IMGTYPE_IP;
 558         }
 559         mp_msg(MSGT_DECVIDEO, MSGL_DBG2, type== MP_IMGTYPE_IPB ? "using IPB\n" : "using IP\n");
 560     }
 561
 562     if (ctx->best_csp == IMGFMT_RGB8 || ctx->best_csp == IMGFMT_BGR8)
 563         flags |= MP_IMGFLAG_RGB_PALETTE;
 564     mpi= mpcodecs_get_image(sh, type, flags, width, height);
 565     if (!mpi) return -1;
 566
 567     // ok, let's see what did we get:
 568     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK &&
 569        !(mpi->flags&MP_IMGFLAG_DIRECT)){
 570         // nice, filter/vo likes draw_callback :)
 571         avctx->draw_horiz_band= draw_slice;
 572     } else
 573         avctx->draw_horiz_band= NULL;
 574     if(IMGFMT_IS_HWACCEL(mpi->imgfmt)) {
 575         avctx->draw_horiz_band= draw_slice;
 576     }
 577 #if CONFIG_XVMC
 578     if(IMGFMT_IS_XVMC(mpi->imgfmt)) {
 579         struct xvmc_pix_fmt *render = mpi->priv; //same as data[2]
 580         if(!avctx->xvmc_acceleration) {
 581             mp_tmsg(MSGT_DECVIDEO, MSGL_INFO, "[VD_FFMPEG] The mc_get_buffer should work only with XVMC acceleration!!");
 582             assert(0);
 583             exit(1);
 584 //            return -1;//!!fixme check error conditions in ffmpeg
 585         }
 586         if(!(mpi->flags & MP_IMGFLAG_DIRECT)) {
 587             mp_tmsg(MSGT_DECVIDEO, MSGL_ERR, "[VD_FFMPEG] Only buffers allocated by vo_xvmc allowed.\n");
 588             assert(0);
 589             exit(1);
 590 //            return -1;//!!fixme check error conditions in ffmpeg
 591         }
 592         if(mp_msg_test(MSGT_DECVIDEO, MSGL_DBG5))
 593             mp_msg(MSGT_DECVIDEO, MSGL_DBG5, "vd_ffmpeg::get_buffer (xvmc render=%p)\n", render);
 594         assert(render != 0);
 595         assert(render->xvmc_id == AV_XVMC_ID);
 596         render->state |= AV_XVMC_STATE_PREDICTION;
 597     }
 598 #endif
 599
 600     pic->data[0]= mpi->planes[0];
 601     pic->data[1]= mpi->planes[1];
 602     pic->data[2]= mpi->planes[2];
 603     pic->data[3]= mpi->planes[3];
 604
 605 #if 0
 606     assert(mpi->width >= ((width +align)&(~align)));
 607     assert(mpi->height >= ((height+align)&(~align)));
 608     assert(mpi->stride[0] >= mpi->width);
 609     if(mpi->imgfmt==IMGFMT_I420 || mpi->imgfmt==IMGFMT_YV12 || mpi->imgfmt==IMGFMT_IYUV){
 610         const int y_size= mpi->stride[0] * (mpi->h-1) + mpi->w;
 611         const int c_size= mpi->stride[1] * ((mpi->h>>1)-1) + (mpi->w>>1);
 612
 613         assert(mpi->planes[0] > mpi->planes[1] || mpi->planes[0] + y_size <= mpi->planes[1]);
 614         assert(mpi->planes[0] > mpi->planes[2] || mpi->planes[0] + y_size <= mpi->planes[2]);
 615         assert(mpi->planes[1] > mpi->planes[0] || mpi->planes[1] + c_size <= mpi->planes[0]);
 616         assert(mpi->planes[1] > mpi->planes[2] || mpi->planes[1] + c_size <= mpi->planes[2]);
 617         assert(mpi->planes[2] > mpi->planes[0] || mpi->planes[2] + c_size <= mpi->planes[0]);
 618         assert(mpi->planes[2] > mpi->planes[1] || mpi->planes[2] + c_size <= mpi->planes[1]);
 619     }
 620 #endif
 621
 622     /* Note, some (many) codecs in libavcodec must have stride1==stride2 && no changes between frames
 623      * lavc will check that and die with an error message, if its not true
 624      */
 625     pic->linesize[0]= mpi->stride[0];
 626     pic->linesize[1]= mpi->stride[1];
 627     pic->linesize[2]= mpi->stride[2];
 628     pic->linesize[3]= mpi->stride[3];
 629
 630     pic->opaque = mpi;
 631 //printf("%X\n", (int)mpi->planes[0]);
 632 #if 0
 633 if(mpi->flags&MP_IMGFLAG_DIRECT)
 634     printf("D");
 635 else if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 636     printf("S");
 637 else
 638     printf(".");
 639 #endif
 640     if(pic->reference){
 641         pic->age= ctx->ip_age[0];
 642
 643         ctx->ip_age[0]= ctx->ip_age[1]+1;
 644         ctx->ip_age[1]= 1;
 645         ctx->b_age++;
 646     }else{
 647         pic->age= ctx->b_age;
 648
 649         ctx->ip_age[0]++;
 650         ctx->ip_age[1]++;
 651         ctx->b_age=1;
 652     }
 653     pic->type= FF_BUFFER_TYPE_USER;
 654
 655     /* The libavcodec reordered_opaque functionality is implemented by
 656      * a similar copy in avcodec_default_get_buffer() and without a
 657      * workaround like this it'd stop working when a custom buffer
 658      * callback is used.
 659      */
 660     pic->reordered_opaque = avctx->reordered_opaque;
 661     return 0;
 662 }
 663
 664 static void release_buffer(struct AVCodecContext *avctx, AVFrame *pic){
 665     mp_image_t *mpi= pic->opaque;
 666     sh_video_t *sh = avctx->opaque;
 667     vd_ffmpeg_ctx *ctx = sh->context;
 668     int i;
 669
 670 //printf("release buffer %d %d %d\n", mpi ? mpi->flags&MP_IMGFLAG_PRESERVE : -99, ctx->ip_count, ctx->b_count);
 671
 672     if(ctx->ip_count <= 2 && ctx->b_count<=1){
 673         if(mpi->flags&MP_IMGFLAG_PRESERVE)
 674             ctx->ip_count--;
 675         else
 676             ctx->b_count--;
 677     }
 678
 679     if (mpi) {
 680         // Palette support: free palette buffer allocated in get_buffer
 681         if (mpi->bpp == 8)
 682             av_freep(&mpi->planes[1]);
 683 #if CONFIG_XVMC
 684         if (IMGFMT_IS_XVMC(mpi->imgfmt)) {
 685             struct xvmc_pix_fmt *render = (struct xvmc_pix_fmt*)pic->data[2]; //same as mpi->priv
 686             if(mp_msg_test(MSGT_DECVIDEO, MSGL_DBG5))
 687                 mp_msg(MSGT_DECVIDEO, MSGL_DBG5, "vd_ffmpeg::release_buffer (xvmc render=%p)\n", render);
 688             assert(render!=NULL);
 689             assert(render->xvmc_id == AV_XVMC_ID);
 690             render->state&=~AV_XVMC_STATE_PREDICTION;
 691         }
 692 #endif
 693         // release mpi (in case MPI_IMGTYPE_NUMBERED is used, e.g. for VDPAU)
 694         mpi->usage_count--;
 695     }
 696
 697     if(pic->type!=FF_BUFFER_TYPE_USER){
 698         avcodec_default_release_buffer(avctx, pic);
 699         return;
 700     }
 701
 702     for(i=0; i<4; i++){
 703         pic->data[i]= NULL;
 704     }
 705 //printf("R%X %X\n", pic->linesize[0], pic->data[0]);
 706 }
 707
 708 // copypaste from demux_real.c - it should match to get it working!
 709 //FIXME put into some header
 710 typedef struct dp_hdr_s {
 711     uint32_t chunks;        // number of chunks
 712     uint32_t timestamp; // timestamp from packet header
 713     uint32_t len;        // length of actual data
 714     uint32_t chunktab;        // offset to chunk offset array
 715 } dp_hdr_t;
 716
 717 static av_unused void swap_palette(void *pal)
 718 {
 719     int i;
 720     uint32_t *p = pal;
 721     for (i = 0; i < AVPALETTE_COUNT; i++)
 722         p[i] = le2me_32(p[i]);
 723 }
 724
 725 // decode a frame
 726 static struct mp_image *decode(struct sh_video *sh, void *data, int len,
 727                                int flags, double *reordered_pts)
 728 {
 729     int got_picture=0;
 730     int ret;
 731     vd_ffmpeg_ctx *ctx = sh->context;
 732     AVFrame *pic= ctx->pic;
 733     AVCodecContext *avctx = ctx->avctx;
 734     struct lavc_param *lavc_param = &sh->opts->lavc_param;
 735     mp_image_t *mpi=NULL;
 736     int dr1= ctx->do_dr1;
 737     AVPacket pkt;
 738
 739     if(len<=0) return NULL; // skipped frame
 740
 741 //ffmpeg interlace (mpeg2) bug have been fixed. no need of -noslices
 742     if (!dr1)
 743     avctx->draw_horiz_band=NULL;
 744     if(ctx->vo_initialized && !(flags&3) && !dr1){
 745         mpi=mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, MP_IMGFLAG_PRESERVE |
 746             (ctx->do_slices?MP_IMGFLAG_DRAW_CALLBACK:0),
 747             sh->disp_w, sh->disp_h);
 748         if(mpi && mpi->flags&MP_IMGFLAG_DRAW_CALLBACK){
 749             // vd core likes slices!
 750             avctx->draw_horiz_band=draw_slice;
 751         }
 752     }
 753
 754     if (flags & 2)
 755         avctx->skip_frame = AVDISCARD_ALL;
 756     else if (flags & 1)
 757         avctx->skip_frame = AVDISCARD_NONREF;
 758     else
 759         avctx->skip_frame = 0;
 760
 761     mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "vd_ffmpeg data: %04x, %04x, %04x, %04x\n",
 762            ((int *)data)[0], ((int *)data)[1], ((int *)data)[2], ((int *)data)[3]);
 763     av_init_packet(&pkt);
 764     pkt.data = data;
 765     pkt.size = len;
 766     // HACK: make PNGs decode normally instead of as CorePNG delta frames
 767     pkt.flags = PKT_FLAG_KEY;
 768     // The avcodec opaque field stupidly supports only int64_t type
 769     *(double *)&avctx->reordered_opaque = *reordered_pts;
 770     ret = avcodec_decode_video2(avctx, pic, &got_picture, &pkt);
 771     *reordered_pts = *(double *)&pic->reordered_opaque;
 772
 773     dr1= ctx->do_dr1;
 774     if(ret<0) mp_msg(MSGT_DECVIDEO, MSGL_WARN, "Error while decoding frame!\n");
 775 //printf("repeat: %d\n", pic->repeat_pict);
 776 //-- vstats generation
 777     while(lavc_param->vstats){ // always one time loop
 778         static FILE *fvstats=NULL;
 779         char filename[20];
 780         static long long int all_len=0;
 781         static int frame_number=0;
 782         static double all_frametime=0.0;
 783         AVFrame *pic= avctx->coded_frame;
 784         double quality=0.0;
 785
 786         if(!fvstats) {
 787             time_t today2;
 788             struct tm *today;
 789             today2 = time(NULL);
 790             today = localtime(&today2);
 791             sprintf(filename, "vstats_%02d%02d%02d.log", today->tm_hour,
 792                 today->tm_min, today->tm_sec);
 793             fvstats = fopen(filename, "w");
 794             if(!fvstats) {
 795                 perror("fopen");
 796                 lavc_param->vstats=0; // disable block
 797                 break;
 798                 /*exit(1);*/
 799             }
 800         }
 801
 802         // average MB quantizer
 803         {
 804             int x, y;
 805             int w = ((avctx->width  << ctx->lowres)+15) >> 4;
 806             int h = ((avctx->height << ctx->lowres)+15) >> 4;
 807             int8_t *q = pic->qscale_table;
 808             for(y = 0; y < h; y++) {
 809                 for(x = 0; x < w; x++)
 810                     quality += (double)*(q+x);
 811                 q += pic->qstride;
 812             }
 813             quality /= w * h;
 814         }
 815
 816         all_len+=len;
 817         all_frametime+=sh->frametime;
 818         fprintf(fvstats, "frame= %5d q= %2.2f f_size= %6d s_size= %8.0fkB ",
 819             ++frame_number, quality, len, (double)all_len/1024);
 820         fprintf(fvstats, "time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
 821            all_frametime, (double)(len*8)/sh->frametime/1000.0,
 822            (double)(all_len*8)/all_frametime/1000.0);
 823         switch(pic->pict_type){
 824         case FF_I_TYPE:
 825             fprintf(fvstats, "type= I\n");
 826             break;
 827         case FF_P_TYPE:
 828             fprintf(fvstats, "type= P\n");
 829             break;
 830         case FF_S_TYPE:
 831             fprintf(fvstats, "type= S\n");
 832             break;
 833         case FF_B_TYPE:
 834             fprintf(fvstats, "type= B\n");
 835             break;
 836         default:
 837             fprintf(fvstats, "type= ? (%d)\n", pic->pict_type);
 838             break;
 839         }
 840
 841         ctx->qp_stat[(int)(quality+0.5)]++;
 842         ctx->qp_sum += quality;
 843         ctx->inv_qp_sum += 1.0/(double)quality;
 844
 845         break;
 846     }
 847 //--
 848
 849     if(!got_picture) return NULL;        // skipped image
 850
 851     if(init_vo(sh, avctx->pix_fmt) < 0) return NULL;
 852
 853     if(dr1 && pic->opaque){
 854         mpi= (mp_image_t *)pic->opaque;
 855     }
 856
 857     if(!mpi)
 858     mpi=mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, MP_IMGFLAG_PRESERVE,
 859         avctx->width, avctx->height);
 860     if(!mpi){        // temporary!
 861         mp_tmsg(MSGT_DECVIDEO, MSGL_WARN, "[VD_FFMPEG] Couldn't allocate image for codec.\n");
 862         return NULL;
 863     }
 864
 865     if(!dr1){
 866         mpi->planes[0]=pic->data[0];
 867         mpi->planes[1]=pic->data[1];
 868         mpi->planes[2]=pic->data[2];
 869         mpi->planes[3]=pic->data[3];
 870         mpi->stride[0]=pic->linesize[0];
 871         mpi->stride[1]=pic->linesize[1];
 872         mpi->stride[2]=pic->linesize[2];
 873         mpi->stride[3]=pic->linesize[3];
 874     }
 875
 876     if (!mpi->planes[0])
 877         return NULL;
 878
 879     if(ctx->best_csp == IMGFMT_422P && mpi->chroma_y_shift==1){
 880         // we have 422p but user wants 420p
 881         mpi->stride[1]*=2;
 882         mpi->stride[2]*=2;
 883     }
 884
 885 #if HAVE_BIGENDIAN
 886     // FIXME: this might cause problems for buffers with FF_BUFFER_HINTS_PRESERVE
 887     if (mpi->bpp == 8)
 888         swap_palette(mpi->planes[1]);
 889 #endif
 890 /* to comfirm with newer lavc style */
 891     mpi->qscale =pic->qscale_table;
 892     mpi->qstride=pic->qstride;
 893     mpi->pict_type=pic->pict_type;
 894     mpi->qscale_type= pic->qscale_type;
 895     mpi->fields = MP_IMGFIELD_ORDERED;
 896     if(pic->interlaced_frame) mpi->fields |= MP_IMGFIELD_INTERLACED;
 897     if(pic->top_field_first ) mpi->fields |= MP_IMGFIELD_TOP_FIRST;
 898     if(pic->repeat_pict == 1) mpi->fields |= MP_IMGFIELD_REPEAT_FIRST;
 899
 900     return mpi;
 901 }
 902
 903 static enum PixelFormat get_format(struct AVCodecContext *avctx,
 904                                     const enum PixelFormat *fmt){
 905     enum PixelFormat selected_format;
 906     int imgfmt;
 907     sh_video_t *sh = avctx->opaque;
 908     int i;
 909
 910     for(i=0;fmt[i]!=PIX_FMT_NONE;i++){
 911         imgfmt = pixfmt2imgfmt(fmt[i]);
 912         if(!IMGFMT_IS_HWACCEL(imgfmt)) continue;
 913         mp_msg(MSGT_DECVIDEO, MSGL_V, "[VD_FFMPEG] Trying pixfmt=%d.\n", i);
 914         if(init_vo(sh, fmt[i]) >= 0) {
 915             break;
 916         }
 917     }
 918     selected_format = fmt[i];
 919     return selected_format;
 920 }
 921
 922 const struct vd_functions mpcodecs_vd_ffmpeg = {
 923     .info = &info,
 924     .init = init,
 925     .uninit = uninit,
 926     .control = control,
 927     .decode2 = decode
 928 };