/***********************************************************************
* hb_work_decdca_init
***********************************************************************
* Allocate the work object, initialize libdca
**********************************************************************/
static int decdcaInit( hb_work_object_t * w, hb_job_t * job )
{
hb_work_private_t * pv = calloc( 1, sizeof( hb_work_private_t ) );
hb_audio_t * audio = w->audio;
w->private_data = pv;
pv->job = job;
pv->list = hb_list_init();
pv->state = dca_init( 0 );
/* Decide what format we want out of libdca
work.c has already done some of this deduction for us in do_job() */
pv->flags_out = HB_AMIXDOWN_GET_DCA_FORMAT(audio->config.out.mixdown);
if ( audio->config.out.codec == HB_ACODEC_LAME )
pv->flags_out |= DCA_ADJUST_LEVEL;
/* pass the number of channels used into the private work data */
/* will only be actually used if we're not doing AC3 passthru */
pv->out_discrete_channels = HB_AMIXDOWN_GET_DISCRETE_CHANNEL_COUNT(audio->config.out.mixdown);
pv->level = 32768.0;
return 0;
}
int main(int argc, char *argv[])
{
dca_state_t *state;
(void)argc;
(void)argv;
state = dca_init(0);
if (!state) {
return 1;
}
dca_free(state);
return 0;
}
bool TaudioCodecLibDTS::init(const CMediaType &mt)
{
dll = new Tdll(dllname, config);
dll->loadFunction(dca_init, "dca_init");
dll->loadFunction(dca_free, "dca_free");
dll->loadFunction(dca_syncinfo, "dca_syncinfo");
dll->loadFunction(dca_frame, "dca_frame");
dll->loadFunction(dca_dynrng, "dca_dynrng");
dll->loadFunction(dca_blocks_num, "dca_blocks_num");
dll->loadFunction(dca_block, "dca_block");
dll->loadFunction(dca_samples, "dca_samples");
if (dll->ok) {
state = dca_init(Tconfig::cpu_flags);
fmt.sf = TsampleFormat::SF_FLOAT32;
inited = true;
return true;
} else {
return false;
}
}
static gboolean
gst_dtsdec_start (GstAudioDecoder * dec)
{
GstDtsDec *dts = GST_DTSDEC (dec);
GstDtsDecClass *klass;
GST_DEBUG_OBJECT (dec, "start");
klass = GST_DTSDEC_CLASS (G_OBJECT_GET_CLASS (dts));
dts->state = dca_init (klass->dts_cpuflags);
dts->samples = dca_samples (dts->state);
dts->bit_rate = -1;
dts->sample_rate = -1;
dts->stream_channels = DCA_CHANNEL;
dts->using_channels = DCA_CHANNEL;
dts->level = 1;
dts->bias = 0;
dts->flag_update = TRUE;
/* call upon legacy upstream byte support (e.g. seeking) */
gst_audio_decoder_set_estimate_rate (dec, TRUE);
return TRUE;
}
static int decdcaBSInfo( hb_work_object_t *w, const hb_buffer_t *b,
hb_work_info_t *info )
{
int i, flags, rate, bitrate, frame_length;
dca_state_t * state = dca_init( 0 );
memset( info, 0, sizeof(*info) );
/* since DCA frames don't line up with MPEG ES frames scan the
* entire frame for an DCA sync pattern. */
for ( i = 0; i < b->size - 7; ++i )
{
if( dca_syncinfo( state, &b->data[i], &flags, &rate, &bitrate,
&frame_length ) )
{
break;
}
}
if ( i >= b->size - 7 )
{
/* didn't find DCA sync */
return 0;
}
info->name = "DCA";
info->rate = rate;
info->rate_base = 1;
info->bitrate = bitrate;
info->flags = flags;
if ( ( flags & DCA_CHANNEL_MASK) == DCA_DOLBY )
{
info->flags |= AUDIO_F_DOLBY;
}
switch( flags & DCA_CHANNEL_MASK )
{
/* mono sources */
case DCA_MONO:
info->channel_layout = HB_INPUT_CH_LAYOUT_MONO;
break;
/* stereo input */
case DCA_CHANNEL:
case DCA_STEREO:
case DCA_STEREO_SUMDIFF:
case DCA_STEREO_TOTAL:
info->channel_layout = HB_INPUT_CH_LAYOUT_STEREO;
break;
/* 3F/2R input */
case DCA_3F2R:
info->channel_layout = HB_INPUT_CH_LAYOUT_3F2R;
break;
/* 3F/1R input */
case DCA_3F1R:
info->channel_layout = HB_INPUT_CH_LAYOUT_3F1R;
break;
/* other inputs */
case DCA_3F:
info->channel_layout = HB_INPUT_CH_LAYOUT_3F;
break;
case DCA_2F1R:
info->channel_layout = HB_INPUT_CH_LAYOUT_2F1R;
break;
case DCA_2F2R:
info->channel_layout = HB_INPUT_CH_LAYOUT_2F2R;
break;
case DCA_4F2R:
info->channel_layout = HB_INPUT_CH_LAYOUT_4F2R;
break;
/* unknown */
default:
info->channel_layout = HB_INPUT_CH_LAYOUT_STEREO;
}
if (flags & DCA_LFE)
{
info->channel_layout |= HB_INPUT_CH_LAYOUT_HAS_LFE;
}
return 1;
}
static int Open( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t *)p_this;
decoder_sys_t *p_sys;
if( p_dec->fmt_in.i_codec != VLC_CODEC_DTS
|| p_dec->fmt_in.audio.i_rate == 0
|| p_dec->fmt_in.audio.i_physical_channels == 0
|| p_dec->fmt_in.audio.i_original_channels == 0
|| p_dec->fmt_in.audio.i_bytes_per_frame == 0
|| p_dec->fmt_in.audio.i_frame_length == 0 )
return VLC_EGENERIC;
/* Allocate the memory needed to store the module's structure */
p_sys = p_dec->p_sys = malloc( sizeof(decoder_sys_t) );
if( p_sys == NULL )
return VLC_ENOMEM;
p_sys->b_dynrng = var_InheritBool( p_this, "dts-dynrng" );
p_sys->b_dontwarn = 0;
/* We'll do our own downmixing, thanks. */
p_sys->i_nb_channels = aout_FormatNbChannels( &p_dec->fmt_in.audio );
if( channels_vlc2dca( &p_dec->fmt_in.audio, &p_sys->i_flags )
!= VLC_SUCCESS )
{
msg_Warn( p_this, "unknown sample format!" );
free( p_sys );
return VLC_EGENERIC;
}
//p_sys->i_flags |= DCA_ADJUST_LEVEL;
/* Initialize libdca */
p_sys->p_libdca = dca_init( 0 );
if( p_sys->p_libdca == NULL )
{
msg_Err( p_this, "unable to initialize libdca" );
free( p_sys );
return VLC_EGENERIC;
}
/* libdca channel order
* libdca currently only decodes 5.1, even if you have a DTS-ES source. */
static const uint32_t pi_channels_in[] = {
AOUT_CHAN_CENTER, AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
AOUT_CHAN_REARCENTER, AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
AOUT_CHAN_LFE, 0
};
aout_CheckChannelReorder( pi_channels_in, NULL,
p_dec->fmt_in.audio.i_physical_channels,
p_sys->pi_chan_table );
p_dec->fmt_out.i_cat = AUDIO_ES;
p_dec->fmt_out.audio = p_dec->fmt_in.audio;
p_dec->fmt_out.audio.i_format = VLC_CODEC_FL32;
p_dec->fmt_out.i_codec = p_dec->fmt_out.audio.i_format;
aout_FormatPrepare( &p_dec->fmt_out.audio );
if( decoder_UpdateAudioFormat( p_dec ) )
{
es_format_Init( &p_dec->fmt_out, UNKNOWN_ES, 0 );
Close( p_this );
return VLC_EGENERIC;
}
p_dec->pf_decode = Decode;
p_dec->pf_flush = NULL;
return VLC_SUCCESS;
}
/*****************************************************************************
* Open:
*****************************************************************************/
static int Open( vlc_object_t *p_this, filter_sys_t *p_sys,
audio_format_t input, audio_format_t output )
{
p_sys->b_dynrng = var_InheritBool( p_this, "dts-dynrng" );
p_sys->b_dontwarn = 0;
/* We'll do our own downmixing, thanks. */
p_sys->i_nb_channels = aout_FormatNbChannels( &output );
switch ( (output.i_physical_channels & AOUT_CHAN_PHYSMASK)
& ~AOUT_CHAN_LFE )
{
case AOUT_CHAN_CENTER:
if ( (output.i_original_channels & AOUT_CHAN_CENTER)
|| (output.i_original_channels
& (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT)) )
{
p_sys->i_flags = DCA_MONO;
}
break;
case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT:
if ( output.i_original_channels & AOUT_CHAN_DOLBYSTEREO )
{
p_sys->i_flags = DCA_DOLBY;
}
else if ( input.i_original_channels == AOUT_CHAN_CENTER )
{
p_sys->i_flags = DCA_MONO;
}
else if ( input.i_original_channels & AOUT_CHAN_DUALMONO )
{
p_sys->i_flags = DCA_CHANNEL;
}
else
{
p_sys->i_flags = DCA_STEREO;
}
break;
case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER:
p_sys->i_flags = DCA_3F;
break;
case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARCENTER:
p_sys->i_flags = DCA_2F1R;
break;
case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
| AOUT_CHAN_REARCENTER:
p_sys->i_flags = DCA_3F1R;
break;
case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT:
p_sys->i_flags = DCA_2F2R;
break;
case AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
| AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT:
p_sys->i_flags = DCA_3F2R;
break;
default:
msg_Warn( p_this, "unknown sample format!" );
free( p_sys );
return -1;
}
if ( output.i_physical_channels & AOUT_CHAN_LFE )
{
p_sys->i_flags |= DCA_LFE;
}
//p_sys->i_flags |= DCA_ADJUST_LEVEL;
/* Initialize libdca */
p_sys->p_libdca = dca_init( 0 );
if( p_sys->p_libdca == NULL )
{
msg_Err( p_this, "unable to initialize libdca" );
return VLC_EGENERIC;
}
aout_CheckChannelReorder( pi_channels_in, NULL,
output.i_physical_channels & AOUT_CHAN_PHYSMASK,
p_sys->i_nb_channels,
p_sys->pi_chan_table );
return VLC_SUCCESS;
}
/***********************************************************************
* hb_work_decdca_init
***********************************************************************
* Allocate the work object, initialize libdca
**********************************************************************/
static int decdcaInit( hb_work_object_t * w, hb_job_t * job )
{
hb_work_private_t * pv = calloc( 1, sizeof( hb_work_private_t ) );
hb_audio_t * audio = w->audio;
w->private_data = pv;
pv->job = job;
pv->list = hb_list_init();
pv->state = dca_init( 0 );
pv->level = 1.0;
/* Decide what format we want out of libdca;
* work.c has already done some of this deduction for us in do_job().
* Dolby Surround and Pro Logic II are a bit tricky. */
int layout = (audio->config.in.channel_layout & ~AV_CH_LOW_FREQUENCY);
switch (audio->config.out.mixdown)
{
case HB_AMIXDOWN_6CH:
pv->flags_out = (DCA_3F2R|DCA_LFE);
break;
case HB_AMIXDOWN_DOLBYPLII:
{
if (layout == AV_CH_LAYOUT_5POINT0)
{
// Dolby Pro Logic II output is supported
pv->flags_out = (DCA_3F2R|DCA_OUT_DPLII);
}
else if (layout == AV_CH_LAYOUT_4POINT0)
{
// Dolby Surround output and DCA_3F1R downmix are supported
pv->flags_out = (DCA_3F1R|DCA_OUT_DPLI);
}
else if (layout == AV_CH_LAYOUT_STEREO ||
layout == AV_CH_LAYOUT_STEREO_DOWNMIX)
{
// Dolby Surround output not supported OR
// Dolby Surround input just gets passed through as is
pv->flags_out = DCA_STEREO;
}
else
{
// Dolby Surround output is supported, but DCA_3F1R downmix isn't
pv->flags_out = DCA_DOLBY;
}
} break;
case HB_AMIXDOWN_DOLBY:
{
if (layout == AV_CH_LAYOUT_5POINT0 || layout == AV_CH_LAYOUT_4POINT0)
{
// Dolby Surround output and DCA_3F1R downmix are supported
pv->flags_out = (DCA_3F1R|DCA_OUT_DPLI);
}
else if (layout == AV_CH_LAYOUT_STEREO ||
layout == AV_CH_LAYOUT_STEREO_DOWNMIX)
{
// Dolby Surround output not supported OR
// Dolby Surround input just gets passed through as is
pv->flags_out = DCA_STEREO;
}
else
{
// Dolby Surround output is supported, but DCA_3F1R downmix isn't
pv->flags_out = DCA_DOLBY;
}
} break;
case HB_AMIXDOWN_MONO:
pv->flags_out = DCA_MONO;
break;
default:
pv->flags_out = DCA_STEREO;
break;
}
/* pass the number of channels used into the private work data */
pv->out_discrete_channels = hb_mixdown_get_discrete_channel_count( audio->config.out.mixdown );
return 0;
}
static int decdcaBSInfo( hb_work_object_t *w, const hb_buffer_t *b,
hb_work_info_t *info )
{
int i, flags, rate, bitrate, frame_length;
dca_state_t * state = dca_init( 0 );
memset( info, 0, sizeof(*info) );
/* since DCA frames don't line up with MPEG ES frames scan the
* entire frame for an DCA sync pattern. */
for ( i = 0; i < b->size - 7; ++i )
{
if( dca_syncinfo( state, &b->data[i], &flags, &rate, &bitrate,
&frame_length ) )
{
break;
}
}
if ( i >= b->size - 7 )
{
/* didn't find DCA sync */
dca_free( state );
return 0;
}
info->name = "DCA";
info->rate = rate;
info->rate_base = 1;
info->bitrate = bitrate;
info->flags = flags;
info->samples_per_frame = frame_length;
switch( flags & DCA_CHANNEL_MASK )
{
/* mono sources */
case DCA_MONO:
info->channel_layout = AV_CH_LAYOUT_MONO;
break;
/* stereo input */
case DCA_CHANNEL:
case DCA_STEREO:
case DCA_STEREO_SUMDIFF:
case DCA_STEREO_TOTAL:
info->channel_layout = AV_CH_LAYOUT_STEREO;
break;
/* Dolby Pro Logic (a.k.a. Dolby Surround), 4.0 channels (matrix-encoded) */
case DCA_DOLBY:
info->channel_layout = AV_CH_LAYOUT_STEREO_DOWNMIX;
break;
/* 3F/2R input */
case DCA_3F2R:
info->channel_layout = AV_CH_LAYOUT_5POINT0;
break;
/* 3F/1R input */
case DCA_3F1R:
info->channel_layout = AV_CH_LAYOUT_4POINT0;
break;
/* other inputs */
case DCA_3F:
info->channel_layout = AV_CH_LAYOUT_SURROUND;
break;
case DCA_2F1R:
info->channel_layout = AV_CH_LAYOUT_2_1;
break;
case DCA_2F2R:
info->channel_layout = AV_CH_LAYOUT_2_2;
break;
case DCA_4F2R:
info->channel_layout = AV_CH_LAYOUT_2_2|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER;
break;
/* unknown */
default:
info->channel_layout = AV_CH_LAYOUT_STEREO;
}
if (flags & DCA_LFE)
{
info->channel_layout |= AV_CH_LOW_FREQUENCY;
}
info->channel_map = &hb_qt_chan_map;
dca_free( state );
return 1;
}
