mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-10-02 16:52:42 +00:00
Code Issues 1 Projects Releases Wiki Activity

gst/audioconvert/gstchannelmix.c: Add support for mixing GST_AUDIO_CHANNEL_POSITION_SIDE_* from/to other channel posi...

Browse source 
Original commit message from CVS:
* gst/audioconvert/gstchannelmix.c: (gst_channel_mix_fill_others):
Add support for mixing GST_AUDIO_CHANNEL_POSITION_SIDE_* from/to
other channel positions when source has SIDE channels and dest doesn't
or the other way around.
This commit is contained in:
Sebastian Dröge 2008-05-21 11:30:58 +00:00
parent 10ae17ced1
commit 7d605d4514
2 changed files with 102 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
ChangeLog
View file

@ -1,3 +1,10 @@
2008-05-21 Sebastian Dröge <slomo@circular-chaos.org>
* gst/audioconvert/gstchannelmix.c: (gst_channel_mix_fill_others):
Add support for mixing GST_AUDIO_CHANNEL_POSITION_SIDE_* from/to
other channel positions when source has SIDE channels and dest doesn't
or the other way around.
2008-05-21 Wim Taymans <wim.taymans@collabora.co.uk>
Patch by: Henrik Eriksson <henriken at axis dot com>

96
gst/audioconvert/gstchannelmix.c
View file

@ -276,6 +276,10 @@ gst_channel_mix_fill_one_other (gfloat ** matrix,
#define RATIO_FRONT_BASS (1.0)
#define RATIO_REAR_BASS (1.0 / sqrt (2.0))
#define RATIO_CENTER_BASS (1.0 / sqrt (2.0))
#define RATIO_SIDE_BASS (1.0 / sqrt (2.0))
#define RATIO_FRONT_SIDE (1.0 / sqrt (2.0))
#define RATIO_REAR_SIDE (1.0 / sqrt (2.0))
#define RATIO_CENTER_SIDE (1.0 / 2.0)
static void
gst_channel_mix_fill_others (AudioConvertCtx * this)
@ -388,6 +392,17 @@ gst_channel_mix_fill_others (AudioConvertCtx * this)
GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
GST_AUDIO_CHANNEL_POSITION_REAR_CENTER, RATIO_REAR_BASS);
}
if (out_has_side) {
gst_channel_mix_fill_one_other (this->matrix,
&this->in, in_b,
GST_AUDIO_CHANNEL_POSITION_INVALID,
GST_AUDIO_CHANNEL_POSITION_INVALID,
GST_AUDIO_CHANNEL_POSITION_LFE,
&this->out, out_r,
GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
GST_AUDIO_CHANNEL_POSITION_INVALID, RATIO_SIDE_BASS);
}
} else if (!in_has_bass && out_has_bass) {
if (in_has_front) {
gst_channel_mix_fill_one_other (this->matrix,
@ -422,9 +437,88 @@ gst_channel_mix_fill_others (AudioConvertCtx * this)
GST_AUDIO_CHANNEL_POSITION_INVALID,
GST_AUDIO_CHANNEL_POSITION_LFE, RATIO_REAR_BASS);
}
if (in_has_side) {
gst_channel_mix_fill_one_other (this->matrix,
&this->in, in_r,
GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
GST_AUDIO_CHANNEL_POSITION_INVALID,
&this->out, out_b,
GST_AUDIO_CHANNEL_POSITION_INVALID,
GST_AUDIO_CHANNEL_POSITION_INVALID,
GST_AUDIO_CHANNEL_POSITION_LFE, RATIO_REAR_BASS);
}
}
/* FIXME: side */
/* front/side */
if (!in_has_side && in_has_front && out_has_side) {
gst_channel_mix_fill_one_other (this->matrix,
&this->in, in_f,
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_MONO,
&this->out, out_r,
GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
GST_AUDIO_CHANNEL_POSITION_INVALID, RATIO_FRONT_SIDE);
} else if (in_has_side && !out_has_side && out_has_front) {
gst_channel_mix_fill_one_other (this->matrix,
&this->in, in_r,
GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
GST_AUDIO_CHANNEL_POSITION_INVALID,
&this->out, out_f,
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_FRONT_MONO, RATIO_FRONT_SIDE);
}
/* rear/side */
if (!in_has_side && in_has_rear && out_has_side) {
gst_channel_mix_fill_one_other (this->matrix,
&this->in, in_f,
GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
GST_AUDIO_CHANNEL_POSITION_REAR_CENTER,
&this->out, out_r,
GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
GST_AUDIO_CHANNEL_POSITION_INVALID, RATIO_REAR_SIDE);
} else if (in_has_side && !out_has_side && out_has_rear) {
gst_channel_mix_fill_one_other (this->matrix,
&this->in, in_r,
GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
GST_AUDIO_CHANNEL_POSITION_INVALID,
&this->out, out_f,
GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
GST_AUDIO_CHANNEL_POSITION_REAR_CENTER, RATIO_REAR_SIDE);
}
/* center/side */
/* FIXME: should center<->side have influence on eachother? */
if (!in_has_side && in_has_center && out_has_side) {
gst_channel_mix_fill_one_other (this->matrix,
&this->in, in_f,
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
&this->out, out_r,
GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
GST_AUDIO_CHANNEL_POSITION_INVALID, RATIO_CENTER_SIDE);
} else if (in_has_side && !out_has_side && out_has_center) {
gst_channel_mix_fill_one_other (this->matrix,
&this->in, in_r,
GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
GST_AUDIO_CHANNEL_POSITION_INVALID,
&this->out, out_f,
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER, RATIO_CENTER_SIDE);
}
}
/*