mirror of https://github.com/mpv-player/mpv
135 lines
3.2 KiB
C
135 lines
3.2 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "help_mp.h"
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#ifdef USE_LIBAVCODEC
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#include "bswap.h"
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#include "vd_internal.h"
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static vd_info_t info = {
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"FFmpeg's libavcodec codec family",
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"ffmpeg",
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VFM_FFMPEG,
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"A'rpi",
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"http://ffmpeg.sf.net",
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"native codecs"
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};
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LIBVD_EXTERN(ffmpeg)
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#ifdef USE_LIBAVCODEC_SO
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#include <libffmpeg/avcodec.h>
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#else
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#include "libavcodec/avcodec.h"
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#endif
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int avcodec_inited=0;
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//#ifdef FF_POSTPROCESS
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//unsigned int lavc_pp=0;
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//#endif
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// to set/get/query special features/parameters
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static int control(sh_video_t *sh,int cmd,void* arg,...){
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return CONTROL_UNKNOWN;
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}
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// init driver
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static int init(sh_video_t *sh){
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AVCodec *lavc_codec;
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AVCodecContext *ctx;
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if(!avcodec_inited){
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avcodec_init();
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avcodec_register_all();
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avcodec_inited=1;
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}
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lavc_codec = (AVCodec *)avcodec_find_decoder_by_name(sh->codec->dll);
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if(!lavc_codec){
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mp_msg(MSGT_DECVIDEO,MSGL_ERR,MSGTR_MissingLAVCcodec,sh->codec->dll);
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return 0;
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}
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ctx = sh->context = malloc(sizeof(AVCodecContext));
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memset(ctx, 0, sizeof(AVCodecContext));
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ctx->width = sh->disp_w;
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ctx->height= sh->disp_h;
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mp_dbg(MSGT_DECVIDEO,MSGL_DBG2,"libavcodec.size: %d x %d\n",ctx->width,ctx->height);
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if (sh->format == mmioFOURCC('R', 'V', '1', '3'))
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ctx->sub_id = 3;
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/* open it */
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if (avcodec_open(ctx, lavc_codec) < 0) {
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mp_msg(MSGT_DECVIDEO,MSGL_ERR, MSGTR_CantOpenCodec);
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return 0;
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}
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mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: libavcodec init OK!\n");
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return mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_YV12);
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}
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// uninit driver
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static void uninit(sh_video_t *sh){
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if (avcodec_close(sh->context) < 0)
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mp_msg(MSGT_DECVIDEO,MSGL_ERR, MSGTR_CantCloseCodec);
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}
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//mp_image_t* mpcodecs_get_image(sh_video_t *sh, int mp_imgtype, int mp_imgflag, int w, int h);
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// decode a frame
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static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
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int got_picture=0;
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int ret;
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AVPicture lavc_picture;
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AVCodecContext *ctx = sh->context;
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mp_image_t* mpi;
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if(len<=0) return NULL; // skipped frame
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ret = avcodec_decode_video(sh->context, &lavc_picture,
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&got_picture, data, len);
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if(ret<0) mp_msg(MSGT_DECVIDEO,MSGL_WARN, "Error while decoding frame!\n");
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if(!got_picture) return NULL; // skipped image
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if ((ctx->width != sh->disp_w) ||
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(ctx->height != sh->disp_h))
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{
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/* and what about the sh->bih (BitmapInfoHeader) width/height values? */
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sh->disp_w = ctx->width;
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sh->disp_h = ctx->height;
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if (mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_YV12))
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return NULL;
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}
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mpi=mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, MP_IMGFLAG_PRESERVE,
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ctx->width, ctx->height);
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if(!mpi){ // temporary!
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printf("couldn't allocate image for codec\n");
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return NULL;
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}
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mpi->planes[0]=lavc_picture.data[0];
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mpi->planes[1]=lavc_picture.data[1];
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mpi->planes[2]=lavc_picture.data[2];
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mpi->stride[0]=lavc_picture.linesize[0];
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mpi->stride[1]=lavc_picture.linesize[1];
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mpi->stride[2]=lavc_picture.linesize[2];
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if(ctx->pix_fmt==PIX_FMT_YUV422P){
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mpi->stride[1]*=2;
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mpi->stride[2]*=2;
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}
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return mpi;
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}
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#endif
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