mirror of https://github.com/mpv-player/mpv
171 lines
3.7 KiB
C
171 lines
3.7 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.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 HAVE_OGGTHEORA
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#include "vd_internal.h"
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static vd_info_t info = {
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"Theora/VP3",
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"theora",
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"David Kuehling",
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"www.theora.org",
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"Theora project's VP3 codec"
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};
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LIBVD_EXTERN(theora)
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#include <theora/theora.h>
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#define THEORA_NUM_HEADER_PACKETS 3
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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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typedef struct theora_struct_st {
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theora_state st;
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theora_comment cc;
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theora_info inf;
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} theora_struct_t;
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/*
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* init driver
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*/
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static int init(sh_video_t *sh){
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theora_struct_t *context = NULL;
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int failed = 1;
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int errorCode = 0;
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ogg_packet op;
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int i;
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/* check whether video output format is supported */
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switch(sh->codec->outfmt[sh->outfmtidx])
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{
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case IMGFMT_YV12: /* well, this should work... */ break;
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default:
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mp_msg (MSGT_DECVIDEO,MSGL_ERR,"Unsupported out_fmt: 0x%X\n",
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sh->codec->outfmt[sh->outfmtidx]);
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return 0;
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}
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/* this is not a loop, just a context, from which we can break on error */
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do
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{
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context = (theora_struct_t *)calloc (sizeof (theora_struct_t), 1);
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sh->context = context;
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if (!context)
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break;
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theora_info_init(&context->inf);
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theora_comment_init(&context->cc);
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/* Read all header packets, pass them to theora_decode_header. */
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for (i = 0; i < THEORA_NUM_HEADER_PACKETS; i++)
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{
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op.bytes = ds_get_packet (sh->ds, &op.packet);
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op.b_o_s = 1;
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if ( (errorCode = theora_decode_header (&context->inf, &context->cc, &op)) )
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{
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mp_msg(MSGT_DECAUDIO, MSGL_ERR, "Broken Theora header; errorCode=%i!\n", errorCode);
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break;
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}
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}
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if (errorCode)
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break;
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/* now init codec */
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errorCode = theora_decode_init (&context->st, &context->inf);
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if (errorCode)
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{
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mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Theora decode init failed: %i \n",
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errorCode);
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break;
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}
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failed = 0;
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} while (0);
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if (failed)
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{
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if (context)
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{
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free (context);
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sh->context = NULL;
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}
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return 0;
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}
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mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: Theora video 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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/*
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* uninit driver
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*/
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static void uninit(sh_video_t *sh)
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{
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theora_struct_t *context = (theora_struct_t *)sh->context;
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if (context)
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{
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theora_clear (&context->st);
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free (context);
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}
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}
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/*
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* decode frame
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*/
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static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags)
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{
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theora_struct_t *context = (theora_struct_t *)sh->context;
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int errorCode = 0;
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ogg_packet op;
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yuv_buffer yuv;
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mp_image_t* mpi;
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int i;
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bzero (&op, sizeof (op));
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op.bytes = len;
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op.packet = data;
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op.granulepos = -1;
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errorCode = theora_decode_packetin (&context->st, &op);
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if (errorCode)
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{
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mp_msg(MSGT_DECVIDEO,MSGL_ERR,"Theora decode packetin failed: %i \n",
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errorCode);
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return NULL;
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}
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errorCode = theora_decode_YUVout (&context->st, &yuv);
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if (errorCode)
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{
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mp_msg(MSGT_DEMUX,MSGL_ERR,"Theora decode YUVout failed: %i \n",
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errorCode);
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return 0;
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}
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mpi = mpcodecs_get_image(sh, MP_IMGTYPE_EXPORT, 0, sh->disp_w, sh->disp_h);
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if(!mpi) return NULL;
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mpi->planes[0]=yuv.y;
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mpi->stride[0]=yuv.y_stride;
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mpi->planes[1]=yuv.u;
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mpi->stride[1]=yuv.uv_stride;
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mpi->planes[2]=yuv.v;
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mpi->stride[2]=yuv.uv_stride;
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return mpi;
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}
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#endif
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