/*****************************************************************************
* OpenDecoder: probe the decoder and return score
*****************************************************************************/
static int OpenDecoder( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t*) p_this;
unsigned i_codec_id;
int i_cat, i_result;
const char *psz_namecodec;
AVCodecContext *p_context = NULL;
AVCodec *p_codec = NULL;
/* *** determine codec type *** */
if( !GetFfmpegCodec( p_dec->fmt_in.i_codec, &i_cat, &i_codec_id,
&psz_namecodec ) )
{
return VLC_EGENERIC;
}
/* Initialization must be done before avcodec_find_decoder() */
vlc_init_avcodec(p_this);
/* *** ask ffmpeg for a decoder *** */
char *psz_decoder = var_CreateGetString( p_this, "avcodec-codec" );
if( psz_decoder && *psz_decoder )
{
p_codec = avcodec_find_decoder_by_name( psz_decoder );
if( !p_codec )
msg_Err( p_this, "Decoder `%s' not found", psz_decoder );
else if( p_codec->id != i_codec_id )
{
msg_Err( p_this, "Decoder `%s' can't handle %4.4s",
psz_decoder, (char*)&p_dec->fmt_in.i_codec );
p_codec = NULL;
}
}
free( psz_decoder );
if( !p_codec )
p_codec = avcodec_find_decoder( i_codec_id );
if( !p_codec )
{
msg_Dbg( p_dec, "codec not found (%s)", psz_namecodec );
return VLC_EGENERIC;
}
/* *** get a p_context *** */
p_context = avcodec_alloc_context3(p_codec);
if( !p_context )
return VLC_ENOMEM;
p_context->debug = var_InheritInteger( p_dec, "avcodec-debug" );
p_context->opaque = (void *)p_this;
p_dec->b_need_packetized = true;
switch( i_cat )
{
case VIDEO_ES:
p_dec->pf_decode_video = DecodeVideo;
i_result = InitVideoDec ( p_dec, p_context, p_codec,
i_codec_id, psz_namecodec );
break;
case AUDIO_ES:
p_dec->pf_decode_audio = DecodeAudio;
i_result = InitAudioDec ( p_dec, p_context, p_codec,
i_codec_id, psz_namecodec );
break;
case SPU_ES:
p_dec->pf_decode_sub = DecodeSubtitle;
i_result = InitSubtitleDec( p_dec, p_context, p_codec,
i_codec_id, psz_namecodec );
break;
default:
i_result = VLC_EGENERIC;
}
if( i_result == VLC_SUCCESS )
{
p_dec->p_sys->i_cat = i_cat;
if( p_context->profile != FF_PROFILE_UNKNOWN)
p_dec->fmt_in.i_profile = p_context->profile;
if( p_context->level != FF_LEVEL_UNKNOWN)
p_dec->fmt_in.i_level = p_context->level;
}
return i_result;
}
/*****************************************************************************
* OpenDecoder: probe the decoder and return score
*****************************************************************************/
static int OpenDecoder( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t*) p_this;
int i_cat, i_codec_id, i_result;
const char *psz_namecodec;
AVCodecContext *p_context = NULL;
AVCodec *p_codec = NULL;
/* *** determine codec type *** */
if( !GetFfmpegCodec( p_dec->fmt_in.i_codec, &i_cat, &i_codec_id,
&psz_namecodec ) )
{
return VLC_EGENERIC;
}
/* Initialization must be done before avcodec_find_decoder() */
InitLibavcodec(p_this);
/* *** ask ffmpeg for a decoder *** */
p_codec = avcodec_find_decoder( i_codec_id );
if( !p_codec )
{
msg_Dbg( p_dec, "codec not found (%s)", psz_namecodec );
return VLC_EGENERIC;
}
/* *** get a p_context *** */
p_context = avcodec_alloc_context();
if( !p_context )
return VLC_ENOMEM;
p_context->debug = var_InheritInteger( p_dec, "ffmpeg-debug" );
p_context->opaque = (void *)p_this;
/* Set CPU capabilities */
unsigned i_cpu = vlc_CPU();
p_context->dsp_mask = 0;
if( !(i_cpu & CPU_CAPABILITY_MMX) )
{
p_context->dsp_mask |= AV_CPU_FLAG_MMX;
}
if( !(i_cpu & CPU_CAPABILITY_MMXEXT) )
{
p_context->dsp_mask |= AV_CPU_FLAG_MMX2;
}
if( !(i_cpu & CPU_CAPABILITY_3DNOW) )
{
p_context->dsp_mask |= AV_CPU_FLAG_3DNOW;
}
if( !(i_cpu & CPU_CAPABILITY_SSE) )
{
p_context->dsp_mask |= AV_CPU_FLAG_SSE;
}
if( !(i_cpu & CPU_CAPABILITY_SSE2) )
{
p_context->dsp_mask |= AV_CPU_FLAG_SSE2;
}
#ifdef AV_CPU_FLAG_SSE3
if( !(i_cpu & CPU_CAPABILITY_SSE3) )
p_context->dsp_mask |= AV_CPU_FLAG_SSE3;
#endif
#ifdef AV_CPU_FLAG_SSSE3
if( !(i_cpu & CPU_CAPABILITY_SSSE3) )
p_context->dsp_mask |= AV_CPU_FLAG_SSSE3;
#endif
#ifdef AV_CPU_FLAG_SSE4
if( !(i_cpu & CPU_CAPABILITY_SSE4_1) )
p_context->dsp_mask |= AV_CPU_FLAG_SSE4;
#endif
#ifdef AV_CPU_FLAG_SSE42
if( !(i_cpu & CPU_CAPABILITY_SSE4_2) )
p_context->dsp_mask |= AV_CPU_FLAG_SSE42;
#endif
p_dec->b_need_packetized = true;
switch( i_cat )
{
case VIDEO_ES:
p_dec->pf_decode_video = DecodeVideo;
i_result = InitVideoDec ( p_dec, p_context, p_codec,
i_codec_id, psz_namecodec );
break;
case AUDIO_ES:
p_dec->pf_decode_audio = DecodeAudio;
i_result = InitAudioDec ( p_dec, p_context, p_codec,
i_codec_id, psz_namecodec );
break;
case SPU_ES:
p_dec->pf_decode_sub = DecodeSubtitle;
i_result = InitSubtitleDec( p_dec, p_context, p_codec,
i_codec_id, psz_namecodec );
break;
default:
i_result = VLC_EGENERIC;
}
if( i_result == VLC_SUCCESS )
{
p_dec->p_sys->i_cat = i_cat;
if( p_context->profile != FF_PROFILE_UNKNOWN)
p_dec->fmt_in.i_profile = p_context->profile;
if( p_context->level != FF_LEVEL_UNKNOWN)
p_dec->fmt_in.i_level = p_context->level;
}
return i_result;
}