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Add some more default channel layouts, these should be good for AAC at least

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This commit is contained in:
Sebastian Dröge 2012-10-05 15:09:17 +02:00
parent 6ed3ea7cad
commit 7341ed62fa
1 changed files with 38 additions and 8 deletions
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46
sys/androidmedia/gstamc.c
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@ -2515,15 +2515,45 @@ gst_amc_audio_channel_mask_to_positions (guint32 channel_mask, gint channels)
GstAudioChannelPosition *pos = g_new0 (GstAudioChannelPosition, channels);
gint i, j;
if (channel_mask == 0 && channels == 1) {
pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_MONO;
return pos;
}
if (channel_mask == 0) {
if (channels == 1) {
pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_MONO;
return pos;
}
if (channels == 2) {
pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
return pos;
}
if (channel_mask == 0 && channels == 2) {
pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
return pos;
/* Now let the guesswork begin, these are the
* AAC default channel assignments for these numbers
* of channels */
if (channels == 3) {
channel_mask =
CHANNEL_OUT_FRONT_LEFT | CHANNEL_OUT_FRONT_RIGHT |
CHANNEL_OUT_FRONT_CENTER;
} else if (channels == 4) {
channel_mask =
CHANNEL_OUT_FRONT_LEFT | CHANNEL_OUT_FRONT_RIGHT |
CHANNEL_OUT_FRONT_CENTER | CHANNEL_OUT_BACK_CENTER;
} else if (channels == 5) {
channel_mask =
CHANNEL_OUT_FRONT_LEFT | CHANNEL_OUT_FRONT_RIGHT |
CHANNEL_OUT_FRONT_CENTER | CHANNEL_OUT_BACK_LEFT |
CHANNEL_OUT_BACK_RIGHT;
} else if (channels == 6) {
channel_mask =
CHANNEL_OUT_FRONT_LEFT | CHANNEL_OUT_FRONT_RIGHT |
CHANNEL_OUT_FRONT_CENTER | CHANNEL_OUT_BACK_LEFT |
CHANNEL_OUT_BACK_RIGHT | CHANNEL_OUT_LOW_FREQUENCY;
} else if (channels == 8) {
channel_mask =
CHANNEL_OUT_FRONT_LEFT | CHANNEL_OUT_FRONT_RIGHT |
CHANNEL_OUT_FRONT_CENTER | CHANNEL_OUT_BACK_LEFT |
CHANNEL_OUT_BACK_RIGHT | CHANNEL_OUT_LOW_FREQUENCY |
CHANNEL_OUT_FRONT_LEFT_OF_CENTER | CHANNEL_OUT_FRONT_RIGHT_OF_CENTER;
}
}
for (i = 0, j = 0; i < G_N_ELEMENTS (channel_mapping_table); i++) {