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dvdlpcmdec: Added support for Blu-Ray audio

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=784552
This commit is contained in:
Vivia Nikolaidou 2017-07-05 18:58:35 +03:00 committed by Sebastian Dröge
parent ec24f4c9f2
commit cd59f39c2c
2 changed files with 214 additions and 8 deletions
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219
gst/dvdlpcmdec/gstdvdlpcmdec.c
View file

@ -37,6 +37,7 @@ static GstStaticPadTemplate gst_dvdlpcmdec_sink_template =
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-private1-lpcm; "
"audio/x-private2-lpcm; "
"audio/x-private-ts-lpcm; "
"audio/x-lpcm, "
"width = (int) { 16, 20, 24 }, "
"rate = (int) { 32000, 44100, 48000, 96000 }, "
@ -152,6 +153,74 @@ static const GstAudioChannelPosition channel_positions[][8] = {
{GST_AUDIO_CHANNEL_POSITION_INVALID}
};
static const GstAudioChannelPosition bluray_channel_positions[][8] = {
/* invalid */
{GST_AUDIO_CHANNEL_POSITION_INVALID},
/* mono */
{GST_AUDIO_CHANNEL_POSITION_MONO},
/* invalid */
{GST_AUDIO_CHANNEL_POSITION_INVALID},
/* stereo */
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT},
/* surround */
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER},
/* 2.1 */
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_REAR_CENTER},
/* 4.0 */
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
GST_AUDIO_CHANNEL_POSITION_REAR_CENTER},
/* 2.2 */
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT},
/* 5.0 */
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT},
/* 5.1 */
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
GST_AUDIO_CHANNEL_POSITION_LFE1},
/* 7.0 */
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT},
/* 7.1 */
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
GST_AUDIO_CHANNEL_POSITION_LFE1},
/* invalid */
{GST_AUDIO_CHANNEL_POSITION_INVALID},
/* invalid */
{GST_AUDIO_CHANNEL_POSITION_INVALID},
/* invalid */
{GST_AUDIO_CHANNEL_POSITION_INVALID},
/* invalid */
{GST_AUDIO_CHANNEL_POSITION_INVALID}
};
static void
gst_dvdlpcmdec_send_tags (GstDvdLpcmDec * dvdlpcmdec)
{
@ -192,20 +261,21 @@ gst_dvdlpcmdec_set_output_format (GstDvdLpcmDec * dvdlpcmdec)
static void
gst_dvdlpcmdec_update_audio_formats (GstDvdLpcmDec * dec, gint channels,
gint rate, GstAudioFormat format)
gint rate, GstAudioFormat format, guint8 channel_indicator,
const GstAudioChannelPosition positions[][8])
{
GST_DEBUG_OBJECT (dec, "got channles = %d, rate = %d, format = %d", channels,
GST_DEBUG_OBJECT (dec, "got channels = %d, rate = %d, format = %d", channels,
rate, format);
/* Reorder the channel positions and set the default into for the audio */
if (channels < 9
&& channel_positions[channels - 1][0] !=
&& positions[channel_indicator][0] !=
GST_AUDIO_CHANNEL_POSITION_INVALID) {
const GstAudioChannelPosition *position;
GstAudioChannelPosition sorted_position[8];
guint c;
position = channel_positions[channels - 1];
position = positions[channel_indicator];
for (c = 0; c < channels; ++c)
sorted_position[c] = position[c];
gst_audio_channel_positions_to_valid_order (sorted_position, channels);
@ -244,6 +314,10 @@ gst_dvdlpcmdec_set_format (GstAudioDecoder * bdec, GstCaps * caps)
dvdlpcmdec->mode = GST_LPCM_1394;
goto done;
}
if (gst_structure_has_name (structure, "audio/x-private-ts-lpcm")) {
dvdlpcmdec->mode = GST_LPCM_BLURAY;
goto done;
}
dvdlpcmdec->mode = GST_LPCM_RAW;
@ -272,7 +346,8 @@ gst_dvdlpcmdec_set_format (GstAudioDecoder * bdec, GstCaps * caps)
break;
}
gst_dvdlpcmdec_update_audio_formats (dvdlpcmdec, channels, rate, format);
gst_dvdlpcmdec_update_audio_formats (dvdlpcmdec, channels, rate, format,
channels - 1, channel_positions);
dvdlpcmdec->width = width;
@ -344,7 +419,8 @@ parse_header (GstDvdLpcmDec * dec, guint32 header)
/* And, of course, the number of channels (up to 8) */
channels = ((header >> 8) & 0x7) + 1;
gst_dvdlpcmdec_update_audio_formats (dec, channels, rate, format);
gst_dvdlpcmdec_update_audio_formats (dec, channels, rate, format,
channels - 1, channel_positions);
}
static GstFlowReturn
@ -505,6 +581,131 @@ negotiation_failed:
}
}
static GstFlowReturn
gst_dvdlpcmdec_parse_bluray (GstDvdLpcmDec * dvdlpcmdec, GstAdapter * adapter,
gint * offset, gint * len)
{
guint32 header;
const guint8 *data;
guint8 channel_indicator;
data = (const guint8 *) gst_adapter_map (adapter, 4);
if (!data)
goto too_small;
header = GST_READ_UINT32_BE (data);
gst_adapter_unmap (adapter);
/* see if we have a new header */
if (header != dvdlpcmdec->header) {
GstAudioFormat format;
gint rate, channels;
switch ((header >> 6) & 0x3) {
case 0x1:
format = GST_AUDIO_FORMAT_S16BE;
dvdlpcmdec->width = 16;
break;
case 0x2:
format = GST_AUDIO_FORMAT_S24BE;
dvdlpcmdec->width = 20;
break;
case 0x3:
format = GST_AUDIO_FORMAT_S24BE;
dvdlpcmdec->width = 24;
break;
default:
format = GST_AUDIO_FORMAT_UNKNOWN;
dvdlpcmdec->width = 0;
GST_WARNING ("Invalid sample depth!");
break;
}
switch ((header >> 8) & 0xf) {
case 0x1:
rate = 48000;
break;
case 0x4:
rate = 96000;
break;
case 0x5:
rate = 192000;
break;
default:
rate = 0;
GST_WARNING ("Invalid audio sampling frequency!");
break;
}
channel_indicator = (header >> 12) & 0xf;
switch (channel_indicator) {
case 0x1:
channels = 1;
break;
case 0x3:
channels = 2;
break;
case 0x4:
case 0x5:
channels = 3;
break;
case 0x6:
case 0x7:
channels = 4;
break;
case 0x8:
channels = 5;
break;
case 0x9:
channels = 6;
break;
case 0xa:
channels = 7;
break;
case 0xb:
channels = 8;
break;
default:
channels = 0;
GST_WARNING ("Invalid number of audio channels!");
break;
}
GST_DEBUG_OBJECT (dvdlpcmdec, "got channels %d rate %d format %s",
channels, rate, gst_audio_format_to_string (format));
gst_dvdlpcmdec_update_audio_formats (dvdlpcmdec, channels, rate, format,
channel_indicator, bluray_channel_positions);
if (!gst_dvdlpcmdec_set_output_format (dvdlpcmdec))
goto negotiation_failed;
dvdlpcmdec->header = header;
}
*offset = 4;
*len = gst_adapter_available (adapter) - 4;
return GST_FLOW_OK;
/* ERRORS */
too_small:
{
/* Buffer is too small */
GST_ELEMENT_WARNING (dvdlpcmdec, STREAM, DECODE,
("Invalid data found parsing LPCM packet"),
("LPCM packet was too small. Dropping"));
*offset = gst_adapter_available (adapter);
return GST_FLOW_EOS;
}
negotiation_failed:
{
GST_ELEMENT_ERROR (dvdlpcmdec, STREAM, FORMAT, (NULL),
("Failed to configure output format"));
return GST_FLOW_NOT_NEGOTIATED;
}
}
static GstFlowReturn
gst_dvdlpcmdec_parse_1394 (GstDvdLpcmDec * dvdlpcmdec, GstAdapter * adapter,
gint * offset, gint * len)
@ -563,7 +764,8 @@ gst_dvdlpcmdec_parse_1394 (GstDvdLpcmDec * dvdlpcmdec, GstAdapter * adapter,
break;
}
gst_dvdlpcmdec_update_audio_formats (dvdlpcmdec, channels, rate, format);
gst_dvdlpcmdec_update_audio_formats (dvdlpcmdec, channels, rate, format,
channels - 1, channel_positions);
if (!gst_dvdlpcmdec_set_output_format (dvdlpcmdec))
goto negotiation_failed;
@ -621,6 +823,9 @@ gst_dvdlpcmdec_parse (GstAudioDecoder * bdec, GstAdapter * adapter,
case GST_LPCM_1394:
return gst_dvdlpcmdec_parse_1394 (dvdlpcmdec, adapter, offset, len);
case GST_LPCM_BLURAY:
return gst_dvdlpcmdec_parse_bluray (dvdlpcmdec, adapter, offset, len);
}
return GST_FLOW_ERROR;
}

3
gst/dvdlpcmdec/gstdvdlpcmdec.h
View file

@ -45,7 +45,8 @@ typedef enum {
GST_LPCM_UNKNOWN,
GST_LPCM_RAW,
GST_LPCM_DVD,
GST_LPCM_1394
GST_LPCM_1394,
GST_LPCM_BLURAY
} GstDvdLpcmMode;
struct _GstDvdLpcmDec {