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#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"
#ifdef USE_LIBAVCODEC
#include "bswap.h"
#include "vd_internal.h"
static vd_info_t info = {
"FFmpeg's libavcodec codec family",
"ffmpeg",
VFM_FFMPEG,
"A'rpi",
"http://ffmpeg.sf.net",
"native codecs"
};
LIBVD_EXTERN(ffmpeg)
#ifdef USE_LIBAVCODEC_SO
#include <libffmpeg/avcodec.h>
#else
#include "libavcodec/avcodec.h"
#endif
int avcodec_inited=0;
typedef struct {
AVCodecContext *avctx;
int last_aspect;
} vd_ffmpeg_ctx;
//#ifdef FF_POSTPROCESS
//unsigned int lavc_pp=0;
//#endif
// to set/get/query special features/parameters
static int control(sh_video_t *sh,int cmd,void* arg,...){
return CONTROL_UNKNOWN;
}
// init driver
static int init(sh_video_t *sh){
AVCodecContext *avctx;
vd_ffmpeg_ctx *ctx;
AVCodec *lavc_codec;
if(!avcodec_inited){
avcodec_init();
avcodec_register_all();
avcodec_inited=1;
}
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);
return 0;
}
ctx->avctx = malloc(sizeof(AVCodecContext));
memset(ctx->avctx, 0, sizeof(AVCodecContext));
avctx = ctx->avctx;
avctx->width = sh->disp_w;
avctx->height= sh->disp_h;
mp_dbg(MSGT_DECVIDEO,MSGL_DBG2,"libavcodec.size: %d x %d\n",avctx->width,avctx->height);
if (sh->format == mmioFOURCC('R', 'V', '1', '3'))
avctx->sub_id = 3;
/* open it */
if (avcodec_open(avctx, lavc_codec) < 0) {
mp_msg(MSGT_DECVIDEO,MSGL_ERR, MSGTR_CantOpenCodec);
return 0;
}
mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: libavcodec init OK!\n");
return 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 (avcodec_close(avctx) < 0)
mp_msg(MSGT_DECVIDEO,MSGL_ERR, MSGTR_CantCloseCodec);
if (avctx)
free(avctx);
if (ctx)
free(ctx);
}
//mp_image_t* mpcodecs_get_image(sh_video_t *sh, int mp_imgtype, int mp_imgflag, int w, int h);
// decode a frame
static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
int got_picture=0;
int ret;
AVPicture lavc_picture;
vd_ffmpeg_ctx *ctx = sh->context;
AVCodecContext *avctx = ctx->avctx;
mp_image_t* mpi;
if(len<=0) return NULL; // skipped frame
ret = avcodec_decode_video(avctx, &lavc_picture,
&got_picture, data, len);
if(ret<0) mp_msg(MSGT_DECVIDEO,MSGL_WARN, "Error while decoding frame!\n");
if(!got_picture) return NULL; // skipped image
if (avctx->aspect_ratio_info != ctx->last_aspect)
{
ctx->last_aspect = avctx->aspect_ratio_info;
switch(avctx->aspect_ratio_info)
{
case FF_ASPECT_4_3_625:
case FF_ASPECT_4_3_525:
sh->aspect = 4.0/3.0;
break;
case FF_ASPECT_16_9_625:
case FF_ASPECT_16_9_525:
sh->aspect = 16.0/9.0;
break;
case FF_ASPECT_SQUARE:
default:
sh->aspect = 0.0;
break;
}
/* config only if width && height isn't changed */
/* else it will config twice */
if ((sh->aspect > 0.01) && (avctx->width == sh->disp_w) &&
(avctx->height == sh->disp_h))
if (mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_YV12))
return NULL;
}
if ((avctx->width != sh->disp_w) ||
(avctx->height != sh->disp_h))
{
/* and what about the sh->bih (BitmapInfoHeader) width/height values? */
sh->disp_w = avctx->width;
sh->disp_h = avctx->height;
if (mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_YV12))
return NULL;
}
mpi=mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, MP_IMGFLAG_PRESERVE,
avctx->width, avctx->height);
if(!mpi){ // temporary!
printf("couldn't allocate image for codec\n");
return NULL;
}
mpi->planes[0]=lavc_picture.data[0];
mpi->planes[1]=lavc_picture.data[1];
mpi->planes[2]=lavc_picture.data[2];
mpi->stride[0]=lavc_picture.linesize[0];
mpi->stride[1]=lavc_picture.linesize[1];
mpi->stride[2]=lavc_picture.linesize[2];
if(avctx->pix_fmt==PIX_FMT_YUV422P){
mpi->stride[1]*=2;
mpi->stride[2]*=2;
}
return mpi;
}
#endif
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