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gstreamer/gst/audioconvert/gstaudioconvertorc.orc

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audioconvert: use pack/unpack functions Rework the converter to use the pack/unpack functions Because the unpack functions can only unpack to 1 format, add a separate conversion step for doubles when the unpack function produces int. Do conversion to S32 in the quantize function directly. Tweak the conversion factor for doing float->int conversion slightly to get the full range of negative samples, use clamp to make sure we don't exceed our int range on the positive axis (see also #755301)
2015-10-23 14:58:17 +00:00
.function audio_convert_orc_s32_to_double
audioconvert: Implement remaining conversion functions from/to doubles to orc This requires orc 0.4.10
2010-10-01 08:38:38 +00:00
.dest 8 d1 gdouble
.source 4 s1 gint32
.temp 8 t1
convld t1, s1
audioconvert: change multiplier for int<->float conversion Use (1 << 31) as the multiplier for int<->float conversions. This makes sure that int->float conversions always end up with floats between [-1.0, 1.0]. For the conversion from float to int, this multiplier will give the complete int range after we perform clipping. Change the unit test to take this into consideration. Fixes https://bugzilla.gnome.org/show_bug.cgi?id=755301
2015-11-03 10:44:54 +00:00
divd d1, t1, 2147483648.0L
audioconvert: Implement remaining conversion functions from/to doubles to orc This requires orc 0.4.10
2010-10-01 08:38:38 +00:00
audioconvert: use pack/unpack functions Rework the converter to use the pack/unpack functions Because the unpack functions can only unpack to 1 format, add a separate conversion step for doubles when the unpack function produces int. Do conversion to S32 in the quantize function directly. Tweak the conversion factor for doing float->int conversion slightly to get the full range of negative samples, use clamp to make sure we don't exceed our int range on the positive axis (see also #755301)
2015-10-23 14:58:17 +00:00
.function audio_convert_orc_double_to_s32
.dest 4 d1 gint32
audioconvert: Use the ORC double support
2010-08-26 17:16:18 +00:00
.source 8 s1 gdouble
audioconvert: use pack/unpack functions Rework the converter to use the pack/unpack functions Because the unpack functions can only unpack to 1 format, add a separate conversion step for doubles when the unpack function produces int. Do conversion to S32 in the quantize function directly. Tweak the conversion factor for doing float->int conversion slightly to get the full range of negative samples, use clamp to make sure we don't exceed our int range on the positive axis (see also #755301)
2015-10-23 14:58:17 +00:00
.temp 8 t1
audioconvert: Use the ORC double support
2010-08-26 17:16:18 +00:00
audioconvert: change multiplier for int<->float conversion Use (1 << 31) as the multiplier for int<->float conversions. This makes sure that int->float conversions always end up with floats between [-1.0, 1.0]. For the conversion from float to int, this multiplier will give the complete int range after we perform clipping. Change the unit test to take this into consideration. Fixes https://bugzilla.gnome.org/show_bug.cgi?id=755301
2015-11-03 10:44:54 +00:00
muld t1, s1, 2147483648.0L
audioconvert: use pack/unpack functions Rework the converter to use the pack/unpack functions Because the unpack functions can only unpack to 1 format, add a separate conversion step for doubles when the unpack function produces int. Do conversion to S32 in the quantize function directly. Tweak the conversion factor for doing float->int conversion slightly to get the full range of negative samples, use clamp to make sure we don't exceed our int range on the positive axis (see also #755301)
2015-10-23 14:58:17 +00:00
convdl d1, t1
audioconvert: rework audioconvert Rewrite audioconvert to try to make it more clear what steps are executed during conversion. Add passthrough step that just does a memcpy when possible. Add ORC optimized dither and quantization functions. Implement noise-shaping on S32 samples only and allow for arbitrary noise shaping coefficients if we want this later.
2015-10-30 16:36:48 +00:00
.function audio_convert_orc_int_bias
.dest 4 d1 gint32
.source 4 s1 gint32
.param 4 bias gint32
.param 4 mask gint32
.temp 4 t1
addssl t1, s1, bias
andl d1, t1, mask
.function audio_convert_orc_int_dither
.dest 4 d1 gint32
.source 4 s1 gint32
.source 4 dither gint32
.param 4 mask gint32
.temp 4 t1
addssl t1, s1, dither
andl d1, t1, mask
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