~ubuntu-dev/mplayer/upstream-ubuntu

#include <stdio.h>

#include <stdlib.h>

#include <assert.h>

#include <time.h>

#include "config.h"

#include "mp_msg.h"

#include "help_mp.h"

#include "libavutil/common.h"

#include "libavutil/intreadwrite.h"

#include "mpbswap.h"

#include "vd_internal.h"

static vd_info_t info = {

	"FFmpeg's libavcodec codec family",

	"ffmpeg",

	"A'rpi",

	"A'rpi, Michael, Alex",

	"native codecs (http://ffmpeg.sf.net/)"

};

LIBVD_EXTERN(ffmpeg)

#ifdef USE_LIBAVCODEC_SO

#include <ffmpeg/avcodec.h>

#else

#include "libavcodec/avcodec.h"

#endif

#ifdef HAVE_XVMC

#include "xvmc_render.h"

#endif

int avcodec_inited=0;

typedef struct {

    AVCodecContext *avctx;

    AVFrame *pic;

    enum PixelFormat pix_fmt;

    int do_slices;

    int do_dr1;

    int vo_inited;

    int best_csp;

    int b_age;

    int ip_age[2];

    int qp_stat[32];

    double qp_sum;

    double inv_qp_sum;

    int ip_count;

    int b_count;

    AVRational last_sample_aspect_ratio;

} vd_ffmpeg_ctx;

//#ifdef USE_LIBPOSTPROC

//unsigned int lavc_pp=0;

//#endif

#include "m_option.h"

static int get_buffer(AVCodecContext *avctx, AVFrame *pic);

static void release_buffer(AVCodecContext *avctx, AVFrame *pic);

#ifdef HAVE_XVMC

static enum PixelFormat get_format(struct AVCodecContext * avctx,

                                   const enum PixelFormat * pix_fmt);

static int mc_get_buffer(AVCodecContext *avctx, AVFrame *pic);

static void mc_release_buffer(AVCodecContext *avctx, AVFrame *pic);

static void mc_render_slice(struct AVCodecContext *s,

                	AVFrame *src, int offset[4],

                	int y, int type, int height);

#endif

static int lavc_param_workaround_bugs= FF_BUG_AUTODETECT;

static int lavc_param_error_resilience=2;

static int lavc_param_error_concealment=3;

static int lavc_param_gray=0;

static int lavc_param_vstats=0;

static int lavc_param_idct_algo=0;

static int lavc_param_debug=0;

static int lavc_param_vismv=0;

static int lavc_param_skip_top=0;

static int lavc_param_skip_bottom=0;

static int lavc_param_fast=0;

static int lavc_param_lowres=0;

static char *lavc_param_lowres_str=NULL;

static char *lavc_param_skip_loop_filter_str = NULL;

static char *lavc_param_skip_idct_str = NULL;

static char *lavc_param_skip_frame_str = NULL;

static int lavc_param_threads=1;

static int lavc_param_bitexact=0;

m_option_t lavc_decode_opts_conf[]={

	{"bug", &lavc_param_workaround_bugs, CONF_TYPE_INT, CONF_RANGE, -1, 999999, NULL},

	{"er", &lavc_param_error_resilience, CONF_TYPE_INT, CONF_RANGE, 0, 99, NULL},

	{"gray", &lavc_param_gray, CONF_TYPE_FLAG, 0, 0, CODEC_FLAG_PART, NULL},

	{"idct", &lavc_param_idct_algo, CONF_TYPE_INT, CONF_RANGE, 0, 99, NULL},

	{"ec", &lavc_param_error_concealment, CONF_TYPE_INT, CONF_RANGE, 0, 99, NULL},

	{"vstats", &lavc_param_vstats, CONF_TYPE_FLAG, 0, 0, 1, NULL},

	{"debug", &lavc_param_debug, CONF_TYPE_INT, CONF_RANGE, 0, 9999999, NULL},

	{"vismv", &lavc_param_vismv, CONF_TYPE_INT, CONF_RANGE, 0, 9999999, NULL},

	{"st", &lavc_param_skip_top, CONF_TYPE_INT, CONF_RANGE, 0, 999, NULL},

	{"sb", &lavc_param_skip_bottom, CONF_TYPE_INT, CONF_RANGE, 0, 999, NULL},

#ifdef CODEC_FLAG2_FAST

        {"fast", &lavc_param_fast, CONF_TYPE_FLAG, 0, 0, CODEC_FLAG2_FAST, NULL},

#endif

	{"lowres", &lavc_param_lowres_str, CONF_TYPE_STRING, 0, 0, 0, NULL},

	{"skiploopfilter", &lavc_param_skip_loop_filter_str, CONF_TYPE_STRING, 0, 0, 0, NULL},

	{"skipidct", &lavc_param_skip_idct_str, CONF_TYPE_STRING, 0, 0, 0, NULL},

	{"skipframe", &lavc_param_skip_frame_str, CONF_TYPE_STRING, 0, 0, 0, NULL},

        {"threads", &lavc_param_threads, CONF_TYPE_INT, CONF_RANGE, 1, 8, NULL},

        {"bitexact", &lavc_param_bitexact, CONF_TYPE_FLAG, 0, 0, CODEC_FLAG_BITEXACT, NULL},

	{NULL, NULL, 0, 0, 0, 0, NULL}

};

static enum AVDiscard str2AVDiscard(char *str) {

  if (!str)

    return AVDISCARD_DEFAULT;

  if (strcasecmp(str, "none") == 0)

    return AVDISCARD_NONE;

  if (strcasecmp(str, "default") == 0)

    return AVDISCARD_DEFAULT;

  if (strcasecmp(str, "nonref") == 0)

    return AVDISCARD_NONREF;

  if (strcasecmp(str, "bidir") == 0)

    return AVDISCARD_BIDIR;

  if (strcasecmp(str, "nonkey") == 0)

    return AVDISCARD_NONKEY;

  if (strcasecmp(str, "all") == 0)

    return AVDISCARD_ALL;

  mp_msg(MSGT_DECVIDEO, MSGL_ERR, "Unknown discard value %s\n", str);

  return AVDISCARD_DEFAULT;

}

// to set/get/query special features/parameters

static int control(sh_video_t *sh,int cmd,void* arg,...){

    vd_ffmpeg_ctx *ctx = sh->context;

    AVCodecContext *avctx = ctx->avctx;

    switch(cmd){

    case VDCTRL_QUERY_FORMAT:

        {

            int format =(*((int*)arg));

	    if( format == ctx->best_csp ) return CONTROL_TRUE;//supported

	// possible conversions:

	    switch( format ){

        case IMGFMT_YV12:

        case IMGFMT_IYUV:

        case IMGFMT_I420:

	    // "converted" using pointer/stride modification

	    if(avctx->pix_fmt==PIX_FMT_YUV420P) return CONTROL_TRUE;// u/v swap

	    if(avctx->pix_fmt==PIX_FMT_YUV422P && !ctx->do_dr1) return CONTROL_TRUE;// half stride

	    break;

#ifdef HAVE_XVMC

        case IMGFMT_XVMC_IDCT_MPEG2:

        case IMGFMT_XVMC_MOCO_MPEG2:

            if(avctx->pix_fmt==PIX_FMT_XVMC_MPEG2_IDCT) return CONTROL_TRUE;

#endif

	}

        return CONTROL_FALSE;

        }

    break;

    case VDCTRL_RESYNC_STREAM:

        avcodec_flush_buffers(avctx);

	return CONTROL_TRUE;

    case VDCTRL_QUERY_UNSEEN_FRAMES:

	return avctx->has_b_frames + 10;

    }

    return CONTROL_UNKNOWN;

}

void mp_msp_av_log_callback(void* ptr, int level, const char* fmt, va_list vl)

{

    static int print_prefix=1;

    AVClass* avc= ptr ? *(AVClass**)ptr : NULL;

    int type= MSGT_FIXME;

    int mp_level;

    char buf[256];

    switch(level){

    case AV_LOG_DEBUG:  mp_level= MSGL_V   ; break;

    case AV_LOG_INFO :  mp_level= MSGL_INFO; break;

    case AV_LOG_ERROR:  mp_level= MSGL_ERR ; break;

    default          :  mp_level= MSGL_ERR ; break;

    }

    if (!mp_msg_test(type, mp_level)) return;

    if(ptr){

        if(!strcmp(avc->class_name, "AVCodecContext")){

            AVCodecContext * s= ptr;

            if(s->codec){

                if(s->codec->type == CODEC_TYPE_AUDIO){

                    if(s->codec->decode)

                        type= MSGT_DECAUDIO;

                }else if(s->codec->type == CODEC_TYPE_VIDEO){

                    if(s->codec->decode)

                        type= MSGT_DECVIDEO;

                }

                //FIXME subtitles, encoders (what msgt for them? there is no appropriate ...)

            }

        }else if(!strcmp(avc->class_name, "AVFormatContext")){

#if 0 //needs libavformat include FIXME iam too lazy to do this cleanly,probably the whole should be moved out of this file ...

            AVFormatContext * s= ptr;

            if(s->iformat)

                type= MSGT_DEMUXER;

            else if(s->oformat)

                type= MSGT_MUXER;

#endif

        }

    }

    if(print_prefix && avc) {

        mp_msg(type, mp_level, "[%s @ %p]", avc->item_name(ptr), avc);

    }

    print_prefix= strchr(fmt, '\n') != NULL;

    vsnprintf(buf, sizeof(buf), fmt, vl);

    mp_msg(type, mp_level, buf);

}

// init driver

static int init(sh_video_t *sh){

    AVCodecContext *avctx;

    vd_ffmpeg_ctx *ctx;

    AVCodec *lavc_codec;

    int lowres_w=0;

    int do_vis_debug= lavc_param_vismv || (lavc_param_debug&(FF_DEBUG_VIS_MB_TYPE|FF_DEBUG_VIS_QP));

    if(!avcodec_inited){

      avcodec_init();

      avcodec_register_all();

      avcodec_inited=1;

      av_log_set_callback(mp_msp_av_log_callback);

    }

    ctx = sh->context = malloc(sizeof(vd_ffmpeg_ctx));

    if (!ctx)

	return(0);

    memset(ctx, 0, sizeof(vd_ffmpeg_ctx));

    lavc_codec = (AVCodec *)avcodec_find_decoder_by_name(sh->codec->dll);

    if(!lavc_codec){

	mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_MissingLAVCcodec,sh->codec->dll);

        uninit(sh);

	return 0;

    }

    if(vd_use_slices && (lavc_codec->capabilities&CODEC_CAP_DRAW_HORIZ_BAND) && !do_vis_debug)

	ctx->do_slices=1;

    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)

	ctx->do_dr1=1;

    ctx->b_age= ctx->ip_age[0]= ctx->ip_age[1]= 256*256*256*64;

    ctx->ip_count= ctx->b_count= 0;

    ctx->pic = avcodec_alloc_frame();

    ctx->avctx = avcodec_alloc_context();

    avctx = ctx->avctx;

#ifdef HAVE_XVMC

#ifdef CODEC_CAP_HWACCEL

    if(lavc_codec->capabilities & CODEC_CAP_HWACCEL){

#else

    if(lavc_codec->id == CODEC_ID_MPEG2VIDEO_XVMC){

#endif /* CODEC_CAP_HWACCEL */

        mp_msg(MSGT_DECVIDEO, MSGL_INFO, MSGTR_MPCODECS_XVMCAcceleratedCodec);

        assert(ctx->do_dr1);//these are must to!

        assert(ctx->do_slices); //it is (vo_)ffmpeg bug if this fails

        avctx->flags|= CODEC_FLAG_EMU_EDGE;//do i need that??!!

        avctx->get_format= get_format;//for now only this decoder will use it

        avctx->get_buffer= mc_get_buffer;

        avctx->release_buffer= mc_release_buffer;

        avctx->draw_horiz_band = mc_render_slice;

        avctx->slice_flags=SLICE_FLAG_CODED_ORDER|SLICE_FLAG_ALLOW_FIELD;

    }else

#endif /* HAVE_XVMC */

    if(ctx->do_dr1){

        avctx->flags|= CODEC_FLAG_EMU_EDGE; 

        avctx->get_buffer= get_buffer;

        avctx->release_buffer= release_buffer;

        avctx->reget_buffer= get_buffer;

    }

#ifdef CODEC_FLAG_NOT_TRUNCATED

    avctx->flags|= CODEC_FLAG_NOT_TRUNCATED;

#endif

    avctx->flags|= lavc_param_bitexact;

    avctx->width = sh->disp_w;

    avctx->height= sh->disp_h;

    avctx->workaround_bugs= lavc_param_workaround_bugs;

    avctx->error_resilience= lavc_param_error_resilience;

    if(lavc_param_gray) avctx->flags|= CODEC_FLAG_GRAY;

#ifdef CODEC_FLAG2_FAST

    avctx->flags2|= lavc_param_fast;

#endif

    avctx->codec_tag= sh->format;

    avctx->stream_codec_tag= sh->video.fccHandler;

    avctx->idct_algo= lavc_param_idct_algo;

    avctx->error_concealment= lavc_param_error_concealment;

    avctx->debug= lavc_param_debug;

    if (lavc_param_debug)

        av_log_set_level(AV_LOG_DEBUG);

    avctx->debug_mv= lavc_param_vismv;

    avctx->skip_top   = lavc_param_skip_top;

    avctx->skip_bottom= lavc_param_skip_bottom;

    if(lavc_param_lowres_str != NULL)

    {

        sscanf(lavc_param_lowres_str, "%d,%d", &lavc_param_lowres, &lowres_w);

        if(lavc_param_lowres < 1 || lavc_param_lowres > 16 || (lowres_w > 0 && avctx->width < lowres_w))

            lavc_param_lowres = 0;

        avctx->lowres = lavc_param_lowres;

    }

    avctx->skip_loop_filter = str2AVDiscard(lavc_param_skip_loop_filter_str);

    avctx->skip_idct = str2AVDiscard(lavc_param_skip_idct_str);

    avctx->skip_frame = str2AVDiscard(lavc_param_skip_frame_str);

    mp_dbg(MSGT_DECVIDEO,MSGL_DBG2,"libavcodec.size: %d x %d\n",avctx->width,avctx->height);

    switch (sh->format) {

    case mmioFOURCC('S','V','Q','3'):

    /* SVQ3 extradata can show up as sh->ImageDesc if demux_mov is used, or

       in the phony AVI header if demux_lavf is used. The first case is

       handled here; the second case falls through to the next section. */

	if (sh->ImageDesc) {

	    avctx->extradata_size = (*(int*)sh->ImageDesc) - sizeof(int);

	    avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);

	    memcpy(avctx->extradata, ((int*)sh->ImageDesc)+1, avctx->extradata_size);

	    break;

	}

	/* fallthrough */

    case mmioFOURCC('A','V','R','n'):

    case mmioFOURCC('M','J','P','G'):

    /* AVRn stores huffman table in AVI header */

    /* Pegasus MJPEG stores it also in AVI header, but it uses the common

       MJPG fourcc :( */

	if (!sh->bih || sh->bih->biSize <= sizeof(BITMAPINFOHEADER))

	    break;

	avctx->flags |= CODEC_FLAG_EXTERN_HUFF;

	avctx->extradata_size = sh->bih->biSize-sizeof(BITMAPINFOHEADER);

	avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);

	memcpy(avctx->extradata, sh->bih+1, avctx->extradata_size);

#if 0

	{

	    int x;

	    uint8_t *p = avctx->extradata;

	    for (x=0; x<avctx->extradata_size; x++)

		mp_msg(MSGT_DECVIDEO, MSGL_INFO,"[%x] ", p[x]);

	    mp_msg(MSGT_DECVIDEO, MSGL_INFO,"\n");

	}

#endif

	break;

    case mmioFOURCC('R', 'V', '1', '0'):

    case mmioFOURCC('R', 'V', '1', '3'):

    case mmioFOURCC('R', 'V', '2', '0'):

    case mmioFOURCC('R', 'V', '3', '0'):

    case mmioFOURCC('R', 'V', '4', '0'):

        if(sh->bih->biSize<sizeof(*sh->bih)+8){

            /* only 1 packet per frame & sub_id from fourcc */

            avctx->extradata_size= 8;

            avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);

	    ((uint32_t*)avctx->extradata)[0] = 0;

	    ((uint32_t*)avctx->extradata)[1] =

        	(sh->format == mmioFOURCC('R', 'V', '1', '3')) ? 0x10003001 : 0x10000000;

        } else {

	    /* has extra slice header (demux_rm or rm->avi streamcopy) */

	    avctx->extradata_size = sh->bih->biSize-sizeof(BITMAPINFOHEADER);

	    avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);

	    memcpy(avctx->extradata, sh->bih+1, avctx->extradata_size);

	}

	avctx->sub_id= AV_RB32(avctx->extradata+4);

//        printf("%X %X %d %d\n", extrahdr[0], extrahdr[1]);

        break;

    default:

	if (!sh->bih || sh->bih->biSize <= sizeof(BITMAPINFOHEADER))

	    break;

	avctx->extradata_size = sh->bih->biSize-sizeof(BITMAPINFOHEADER);

	avctx->extradata = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);

	memcpy(avctx->extradata, sh->bih+1, avctx->extradata_size);

	break;

    }

    /* Pass palette to codec */

    if (sh->bih && (sh->bih->biBitCount <= 8)) {

        avctx->palctrl = calloc(1,sizeof(AVPaletteControl));

        avctx->palctrl->palette_changed = 1;

        if (sh->bih->biSize-sizeof(BITMAPINFOHEADER))

            /* Palette size in biSize */

            memcpy(avctx->palctrl->palette, sh->bih+1,

                   FFMIN(sh->bih->biSize-sizeof(BITMAPINFOHEADER), AVPALETTE_SIZE));

        else

            /* Palette size in biClrUsed */

            memcpy(avctx->palctrl->palette, sh->bih+1,

                   FFMIN(sh->bih->biClrUsed * 4, AVPALETTE_SIZE));

	}

    if(sh->bih)

	avctx->bits_per_sample= sh->bih->biBitCount;

    if(lavc_param_threads > 1)

        avcodec_thread_init(avctx, lavc_param_threads);

    /* open it */

    if (avcodec_open(avctx, lavc_codec) < 0) {

        mp_msg(MSGT_DECVIDEO,MSGL_ERR, MSGTR_CantOpenCodec);

        uninit(sh);

        return 0;

    }

    mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: libavcodec init OK!\n");

    return 1; //mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_YV12);

}

// uninit driver

static void uninit(sh_video_t *sh){

    vd_ffmpeg_ctx *ctx = sh->context;

    AVCodecContext *avctx = ctx->avctx;

    if(lavc_param_vstats){

        int i;

        for(i=1; i<32; i++){

            mp_msg(MSGT_DECVIDEO, MSGL_INFO,"QP: %d, count: %d\n", i, ctx->qp_stat[i]);

        }

        mp_msg(MSGT_DECVIDEO, MSGL_INFO,MSGTR_MPCODECS_ArithmeticMeanOfQP, 

            ctx->qp_sum / avctx->coded_frame->coded_picture_number,

            1.0/(ctx->inv_qp_sum / avctx->coded_frame->coded_picture_number)

            );

    }

    if (avctx) {

        if (avctx->codec && avcodec_close(avctx) < 0)

            mp_msg(MSGT_DECVIDEO,MSGL_ERR, MSGTR_CantCloseCodec);

        av_freep(&avctx->extradata);

        av_freep(&avctx->palctrl);

        av_freep(&avctx->slice_offset);

    }

    av_freep(&avctx);

    av_freep(&ctx->pic);

    if (ctx)

	free(ctx);

}

static void draw_slice(struct AVCodecContext *s,

                	AVFrame *src, int offset[4],

                	int y, int type, int height){

    sh_video_t * sh = s->opaque;

    uint8_t *source[3]= {src->data[0] + offset[0], src->data[1] + offset[1], src->data[2] + offset[2]};

#if 0

    int start=0, i;

    int width= s->width;

    int skip_stride= ((width<<lavc_param_lowres)+15)>>4;

    uint8_t *skip= &s->coded_frame->mbskip_table[(y>>4)*skip_stride];

    int threshold= s->coded_frame->age;

    if(s->pict_type!=B_TYPE){

        for(i=0; i*16<width+16; i++){ 

            if(i*16>=width || skip[i]>=threshold){

                if(start==i) start++;

                else{

                    uint8_t *src2[3]= {src[0] + start*16, 

                                     src[1] + start*8, 

                                     src[2] + start*8};

//printf("%2d-%2d x %d\n", start, i, y);

                    mpcodecs_draw_slice (sh,src2, stride, (i-start)*16, height, start*16, y);

                    start= i+1;

                }

            }       

        }

    }else

#endif

    if (y < sh->disp_h) {

        mpcodecs_draw_slice (sh, source, src->linesize, sh->disp_w, (y+height)<=sh->disp_h?height:sh->disp_h-y, 0, y);

    }

}

static int init_vo(sh_video_t *sh, enum PixelFormat pix_fmt){

    vd_ffmpeg_ctx *ctx = sh->context;

    AVCodecContext *avctx = ctx->avctx;

    float aspect= av_q2d(avctx->sample_aspect_ratio) * avctx->width / avctx->height;

    int width, height;

    width = avctx->width;

    height = avctx->height;

    // HACK!

    // if sh->ImageDesc is non-NULL, it means we decode QuickTime(tm) video.

    // use dimensions from BIH to avoid black borders at the right and bottom.

    if (sh->bih && sh->ImageDesc) {

	width = sh->bih->biWidth>>lavc_param_lowres;

	height = sh->bih->biHeight>>lavc_param_lowres;

    }

     // it is possible another vo buffers to be used after vo config()

     // lavc reset its buffers on width/heigh change but not on aspect change!!!

    if (av_cmp_q(avctx->sample_aspect_ratio, ctx->last_sample_aspect_ratio) ||

	width != sh->disp_w  ||

	height != sh->disp_h ||

	pix_fmt != ctx->pix_fmt ||

	!ctx->vo_inited)

    {

	mp_msg(MSGT_DECVIDEO, MSGL_V, "[ffmpeg] aspect_ratio: %f\n", aspect);

	if (sh->aspect == 0 ||

	    av_cmp_q(avctx->sample_aspect_ratio, 

	             ctx->last_sample_aspect_ratio))

	    sh->aspect = aspect;

	ctx->last_sample_aspect_ratio = avctx->sample_aspect_ratio;

	sh->disp_w = width;

	sh->disp_h = height;

	ctx->pix_fmt = pix_fmt;

	switch(pix_fmt){

	// YUVJ are YUV formats that use the full Y range and not just

	// 16 - 235 (see colorspaces.txt).

	// Currently they are all treated the same way.

	case PIX_FMT_YUV410P: ctx->best_csp=IMGFMT_YVU9;break; //svq1

	case PIX_FMT_YUVJ420P:

	case PIX_FMT_YUV420P: ctx->best_csp=IMGFMT_YV12;break; //mpegs

	case PIX_FMT_YUVJ422P:

	case PIX_FMT_YUV422P: ctx->best_csp=IMGFMT_422P;break; //mjpeg / huffyuv

	case PIX_FMT_YUVJ444P:

	case PIX_FMT_YUV444P: ctx->best_csp=IMGFMT_444P;break; //photo jpeg

	case PIX_FMT_YUV411P: ctx->best_csp=IMGFMT_411P;break; //dv ntsc

	case PIX_FMT_YUYV422: ctx->best_csp=IMGFMT_YUY2;break; //huffyuv perhaps in the future

	case PIX_FMT_RGB24 :  ctx->best_csp=IMGFMT_RGB24;break; //qtrle

	case PIX_FMT_RGB32:   ctx->best_csp=IMGFMT_BGR32;break; //huffyuv / mjpeg

	case PIX_FMT_BGR24 :  ctx->best_csp=IMGFMT_BGR24;break; //8bps

	case PIX_FMT_RGB555:  ctx->best_csp=IMGFMT_BGR15;break; //rpza,cram

	case PIX_FMT_RGB565:  ctx->best_csp=IMGFMT_BGR16;break; //4xm

	case PIX_FMT_GRAY8:   ctx->best_csp=IMGFMT_Y800;break; // gray jpeg

	case PIX_FMT_PAL8:    ctx->best_csp=IMGFMT_BGR8;break; //8bps,mrle,cram

#ifdef HAVE_XVMC

        case PIX_FMT_XVMC_MPEG2_MC:ctx->best_csp=IMGFMT_XVMC_MOCO_MPEG2;break;

        case PIX_FMT_XVMC_MPEG2_IDCT:ctx->best_csp=IMGFMT_XVMC_IDCT_MPEG2;break;

#endif

	default:

	    ctx->best_csp=0;

	}

    	if (!mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h, ctx->best_csp))

    		return -1;

	ctx->vo_inited = 1;

    }

    return 0;

}

static int get_buffer(AVCodecContext *avctx, AVFrame *pic){

    sh_video_t * sh = avctx->opaque;

    vd_ffmpeg_ctx *ctx = sh->context;

    mp_image_t* mpi=NULL;

    int flags= MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE;

    int type= MP_IMGTYPE_IPB;

    int width= avctx->width;

    int height= avctx->height;

    int align=15;

//printf("get_buffer %d %d %d\n", pic->reference, ctx->ip_count, ctx->b_count);

    if(avctx->pix_fmt == PIX_FMT_YUV410P)

        align=63; //yes seriously, its really needed (16x16 chroma blocks in SVQ1 -> 64x64)

  if (pic->buffer_hints) {

    mp_msg(MSGT_DECVIDEO,MSGL_DBG2, "Buffer hints: %u\n", pic->buffer_hints);

    type = MP_IMGTYPE_TEMP;

    if (pic->buffer_hints & FF_BUFFER_HINTS_READABLE)

        flags |= MP_IMGFLAG_READABLE;

    if (pic->buffer_hints & FF_BUFFER_HINTS_PRESERVE) {

        type = MP_IMGTYPE_STATIC;

        flags |= MP_IMGFLAG_PRESERVE;

    }

    if (pic->buffer_hints & FF_BUFFER_HINTS_REUSABLE) {

        type = MP_IMGTYPE_STATIC;

        flags |= MP_IMGFLAG_PRESERVE;

    }

    flags|=(!avctx->hurry_up && ctx->do_slices) ?

            MP_IMGFLAG_DRAW_CALLBACK:0;

    mp_msg(MSGT_DECVIDEO,MSGL_DBG2, type == MP_IMGTYPE_STATIC ? "using STATIC\n" : "using TEMP\n");

  } else {

    if(!pic->reference){

        ctx->b_count++;

        flags|=(!avctx->hurry_up && ctx->do_slices) ?

                MP_IMGFLAG_DRAW_CALLBACK:0;

    }else{

        ctx->ip_count++;

        flags|= MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE

                | (ctx->do_slices ? MP_IMGFLAG_DRAW_CALLBACK : 0);

    }

  }

    if(init_vo(sh,avctx->pix_fmt) < 0){

        avctx->release_buffer= avcodec_default_release_buffer;

        avctx->get_buffer= avcodec_default_get_buffer;

        return avctx->get_buffer(avctx, pic);

    }

  if (!pic->buffer_hints) {

    if(ctx->b_count>1 || ctx->ip_count>2){

        mp_msg(MSGT_DECVIDEO, MSGL_WARN, MSGTR_MPCODECS_DRIFailure);

        ctx->do_dr1=0; //FIXME

        avctx->get_buffer= avcodec_default_get_buffer;

        return avctx->get_buffer(avctx, pic);

    }

    if(avctx->has_b_frames){

        type= MP_IMGTYPE_IPB;

    }else{

        type= MP_IMGTYPE_IP;

    }

    mp_msg(MSGT_DECVIDEO,MSGL_DBG2, type== MP_IMGTYPE_IPB ? "using IPB\n" : "using IP\n");

  }

    mpi= mpcodecs_get_image(sh,type, flags,

			(width+align)&(~align), (height+align)&(~align));

    // ok, let's see what did we get:

    if(  mpi->flags&MP_IMGFLAG_DRAW_CALLBACK &&

       !(mpi->flags&MP_IMGFLAG_DIRECT)){

	// nice, filter/vo likes draw_callback :)

	avctx->draw_horiz_band= draw_slice;

    } else

	avctx->draw_horiz_band= NULL;

	// Palette support: libavcodec copies palette to *data[1]

	if (mpi->bpp == 8)

		mpi->planes[1] = av_malloc(AVPALETTE_SIZE);

    pic->data[0]= mpi->planes[0];

    pic->data[1]= mpi->planes[1];

    pic->data[2]= mpi->planes[2];

#if 0    

    assert(mpi->width >= ((width +align)&(~align)));

    assert(mpi->height >= ((height+align)&(~align)));

    assert(mpi->stride[0] >= mpi->width);

    if(mpi->imgfmt==IMGFMT_I420 || mpi->imgfmt==IMGFMT_YV12 || mpi->imgfmt==IMGFMT_IYUV){

        const int y_size= mpi->stride[0] * (mpi->h-1) + mpi->w;

        const int c_size= mpi->stride[1] * ((mpi->h>>1)-1) + (mpi->w>>1);

        assert(mpi->planes[0] > mpi->planes[1] || mpi->planes[0] + y_size <= mpi->planes[1]);

        assert(mpi->planes[0] > mpi->planes[2] || mpi->planes[0] + y_size <= mpi->planes[2]);

        assert(mpi->planes[1] > mpi->planes[0] || mpi->planes[1] + c_size <= mpi->planes[0]);

        assert(mpi->planes[1] > mpi->planes[2] || mpi->planes[1] + c_size <= mpi->planes[2]);

        assert(mpi->planes[2] > mpi->planes[0] || mpi->planes[2] + c_size <= mpi->planes[0]);

        assert(mpi->planes[2] > mpi->planes[1] || mpi->planes[2] + c_size <= mpi->planes[1]);

    }