mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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6ac8ff9ec3
Original commit message from CVS: Patch by: René Stadler <mail at renestadler dot de> with some minor changes * gst-libs/gst/floatcast/floatcast.h: Use more efficient float endianness conversion functions that don't involve 2 function calls per value. * gst/audioconvert/audioconvert.c: (audio_convert_get_func_index), (check_default), (audio_convert_prepare_context): * gst/audioconvert/gstaudioconvert.c: (gst_audio_convert_parse_caps), (make_lossless_changes): Support non-native endianness floats as input and output. Fixes #339838. * tests/check/elements/audioconvert.c: (verify_convert), (GST_START_TEST): Add unit tests for the non-native endianness float conversions.
483 lines
19 KiB
C
483 lines
19 KiB
C
/* GStreamer
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* Copyright (C) 2005 Wim Taymans <wim at fluendo dot com>
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*
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* audioconvert.c: Convert audio to different audio formats automatically
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "gstchannelmix.h"
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#include "audioconvert.h"
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#include "gst/floatcast/floatcast.h"
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/* int to float/double conversion: int2xxx(i) = 1 / (2^31-1) * i */
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#define INT2FLOAT(i) (4.6566128752457969e-10 * ((gfloat)i))
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#define INT2DOUBLE(i) (4.6566128752457969e-10 * ((gdouble)i))
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/* sign bit in the intermediate format */
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#define SIGNED (1U<<31)
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/***
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* unpack code
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*/
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#define MAKE_UNPACK_FUNC_NAME(name) \
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audio_convert_unpack_##name
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/* unpack from integer to signed integer 32 */
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#define MAKE_UNPACK_FUNC_II(name, stride, sign, READ_FUNC) \
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static void \
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MAKE_UNPACK_FUNC_NAME (name) (guint8 *src, gint32 *dst, \
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gint scale, gint count) \
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{ \
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for (;count; count--) { \
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*dst++ = (((gint32) READ_FUNC (src)) << scale) ^ (sign); \
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src+=stride; \
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} \
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}
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/* unpack from float to signed integer 32 */
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#define MAKE_UNPACK_FUNC_FI(name, type, READ_FUNC) \
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static void \
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MAKE_UNPACK_FUNC_NAME (name) (type * src, gint32 * dst, gint s, gint count) \
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{ \
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gdouble temp; \
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\
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for (; count; count--) { \
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/* blow up to 32 bit */ \
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temp = (READ_FUNC (*src++) * 2147483647.0) + 0.5; \
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*dst++ = (gint32) CLAMP (temp, G_MININT32, G_MAXINT32); \
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} \
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}
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/* unpack from float to float 64 (double) */
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#define MAKE_UNPACK_FUNC_FF(name, type, FUNC) \
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static void \
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MAKE_UNPACK_FUNC_NAME (name) (type * src, gdouble * dst, gint s, \
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gint count) \
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{ \
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for (; count; count--) \
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*dst++ = (gdouble) FUNC (*src++); \
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}
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#define READ8(p) GST_READ_UINT8(p)
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#define READ16_FROM_LE(p) GST_READ_UINT16_LE (p)
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#define READ16_FROM_BE(p) GST_READ_UINT16_BE (p)
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#define READ24_FROM_LE(p) (p[0] | (p[1] << 8) | (p[2] << 16))
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#define READ24_FROM_BE(p) (p[2] | (p[1] << 8) | (p[0] << 16))
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#define READ32_FROM_LE(p) GST_READ_UINT32_LE (p)
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#define READ32_FROM_BE(p) GST_READ_UINT32_BE (p)
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MAKE_UNPACK_FUNC_II (u8, 1, SIGNED, READ8);
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MAKE_UNPACK_FUNC_II (s8, 1, 0, READ8);
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MAKE_UNPACK_FUNC_II (u16_le, 2, SIGNED, READ16_FROM_LE);
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MAKE_UNPACK_FUNC_II (s16_le, 2, 0, READ16_FROM_LE);
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MAKE_UNPACK_FUNC_II (u16_be, 2, SIGNED, READ16_FROM_BE);
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MAKE_UNPACK_FUNC_II (s16_be, 2, 0, READ16_FROM_BE);
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MAKE_UNPACK_FUNC_II (u24_le, 3, SIGNED, READ24_FROM_LE);
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MAKE_UNPACK_FUNC_II (s24_le, 3, 0, READ24_FROM_LE);
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MAKE_UNPACK_FUNC_II (u24_be, 3, SIGNED, READ24_FROM_BE);
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MAKE_UNPACK_FUNC_II (s24_be, 3, 0, READ24_FROM_BE);
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MAKE_UNPACK_FUNC_II (u32_le, 4, SIGNED, READ32_FROM_LE);
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MAKE_UNPACK_FUNC_II (s32_le, 4, 0, READ32_FROM_LE);
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MAKE_UNPACK_FUNC_II (u32_be, 4, SIGNED, READ32_FROM_BE);
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MAKE_UNPACK_FUNC_II (s32_be, 4, 0, READ32_FROM_BE);
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MAKE_UNPACK_FUNC_FI (float_le, gfloat, GFLOAT_FROM_LE);
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MAKE_UNPACK_FUNC_FI (float_be, gfloat, GFLOAT_FROM_BE);
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MAKE_UNPACK_FUNC_FI (double_le, gdouble, GDOUBLE_FROM_LE);
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MAKE_UNPACK_FUNC_FI (double_be, gdouble, GDOUBLE_FROM_BE);
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MAKE_UNPACK_FUNC_FF (float_hq_le, gfloat, GFLOAT_FROM_LE);
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MAKE_UNPACK_FUNC_FF (float_hq_be, gfloat, GFLOAT_FROM_BE);
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MAKE_UNPACK_FUNC_FF (double_hq_le, gdouble, GDOUBLE_FROM_LE);
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MAKE_UNPACK_FUNC_FF (double_hq_be, gdouble, GDOUBLE_FROM_BE);
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/* One of the double_hq_* functions generated above is ineffecient, but it's
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* never used anyway. The same is true for one of the s32_* functions. */
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/***
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* packing code
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*/
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#define MAKE_PACK_FUNC_NAME(name) \
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audio_convert_pack_##name
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/*
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* These functions convert the signed 32 bit integers to the
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* target format. For this to work the following steps are done:
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*
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* 1) If the output format is smaller than 32 bit we add 0.5LSB of
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* the target format (i.e. 1<<(scale-1)) to get proper rounding.
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* Shifting will result in rounding towards negative infinity (for
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* signed values) or zero (for unsigned values). As we might overflow
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* an overflow check is performed.
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* Additionally, if our target format is signed and the value is smaller
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* than zero we decrease it by one to round -X.5 downwards.
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* This leads to the following rounding:
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* -1.2 => -1 1.2 => 1
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* -1.5 => -2 1.5 => 2
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* -1.7 => -2 1.7 => 2
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* 2) If the output format is unsigned we will XOR the sign bit. This
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* will do the same as if we add 1<<31.
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* 3) Afterwards we shift to the target depth. It's necessary to left-shift
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* on signed values here to get arithmetical shifting.
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* 4) This is then written into our target array by the corresponding write
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* function for the target width.
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*/
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/* pack from signed integer 32 to integer */
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#define MAKE_PACK_FUNC_II(name, stride, sign, WRITE_FUNC) \
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static void \
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MAKE_PACK_FUNC_NAME (name) (gint32 *src, gpointer dst, \
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gint scale, gint count) \
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{ \
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guint8 *p = (guint8 *)dst; \
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gint32 tmp; \
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if (scale > 0) { \
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guint32 bias = 1 << (scale - 1); \
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for (;count; count--) { \
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tmp = *src++; \
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if (tmp > 0 && G_MAXINT32 - tmp < bias) \
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tmp = G_MAXINT32; \
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else \
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tmp += bias; \
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if (sign == 0 && tmp < 0) \
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tmp--; \
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tmp = ((tmp) ^ (sign)) >> scale; \
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WRITE_FUNC (p, tmp); \
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p+=stride; \
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} \
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} else { \
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for (;count; count--) { \
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tmp = (*src++ ^ (sign)); \
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WRITE_FUNC (p, tmp); \
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p+=stride; \
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} \
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} \
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}
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/* pack from signed integer 32 to float */
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#define MAKE_PACK_FUNC_IF(name, type, FUNC, FUNC2) \
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static void \
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MAKE_PACK_FUNC_NAME (name) (gint32 * src, type * dst, gint scale, \
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gint count) \
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{ \
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for (; count; count--) \
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*dst++ = FUNC (FUNC2 (*src++)); \
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}
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/* pack from float 64 (double) to float */
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#define MAKE_PACK_FUNC_FF(name, type, FUNC) \
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static void \
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MAKE_PACK_FUNC_NAME (name) (gdouble * src, type * dst, gint s, \
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gint count) \
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{ \
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for (; count; count--) \
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*dst++ = FUNC ((type) (*src++)); \
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}
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#define WRITE8(p, v) GST_WRITE_UINT8 (p, v)
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#define WRITE16_TO_LE(p,v) GST_WRITE_UINT16_LE (p, (guint16)(v))
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#define WRITE16_TO_BE(p,v) GST_WRITE_UINT16_BE (p, (guint16)(v))
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#define WRITE24_TO_LE(p,v) p[0] = v & 0xff; p[1] = (v >> 8) & 0xff; p[2] = (v >> 16) & 0xff
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#define WRITE24_TO_BE(p,v) p[2] = v & 0xff; p[1] = (v >> 8) & 0xff; p[0] = (v >> 16) & 0xff
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#define WRITE32_TO_LE(p,v) GST_WRITE_UINT32_LE (p, (guint32)(v))
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#define WRITE32_TO_BE(p,v) GST_WRITE_UINT32_BE (p, (guint32)(v))
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MAKE_PACK_FUNC_II (u8, 1, SIGNED, WRITE8);
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MAKE_PACK_FUNC_II (s8, 1, 0, WRITE8);
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MAKE_PACK_FUNC_II (u16_le, 2, SIGNED, WRITE16_TO_LE);
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MAKE_PACK_FUNC_II (s16_le, 2, 0, WRITE16_TO_LE);
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MAKE_PACK_FUNC_II (u16_be, 2, SIGNED, WRITE16_TO_BE);
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MAKE_PACK_FUNC_II (s16_be, 2, 0, WRITE16_TO_BE);
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MAKE_PACK_FUNC_II (u24_le, 3, SIGNED, WRITE24_TO_LE);
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MAKE_PACK_FUNC_II (s24_le, 3, 0, WRITE24_TO_LE);
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MAKE_PACK_FUNC_II (u24_be, 3, SIGNED, WRITE24_TO_BE);
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MAKE_PACK_FUNC_II (s24_be, 3, 0, WRITE24_TO_BE);
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MAKE_PACK_FUNC_II (u32_le, 4, SIGNED, WRITE32_TO_LE);
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MAKE_PACK_FUNC_II (s32_le, 4, 0, WRITE32_TO_LE);
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MAKE_PACK_FUNC_II (u32_be, 4, SIGNED, WRITE32_TO_BE);
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MAKE_PACK_FUNC_II (s32_be, 4, 0, WRITE32_TO_BE);
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MAKE_PACK_FUNC_IF (float_le, gfloat, GFLOAT_TO_LE, INT2FLOAT);
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MAKE_PACK_FUNC_IF (float_be, gfloat, GFLOAT_TO_BE, INT2FLOAT);
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MAKE_PACK_FUNC_IF (double_le, gdouble, GDOUBLE_TO_LE, INT2DOUBLE);
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MAKE_PACK_FUNC_IF (double_be, gdouble, GDOUBLE_TO_BE, INT2DOUBLE);
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MAKE_PACK_FUNC_FF (float_hq_le, gfloat, GFLOAT_TO_LE);
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MAKE_PACK_FUNC_FF (float_hq_be, gfloat, GFLOAT_TO_BE);
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/* For double_hq, packing and unpacking is the same, so we reuse the unpacking
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* functions here. */
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#define audio_convert_pack_double_hq_le MAKE_UNPACK_FUNC_NAME (double_hq_le)
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#define audio_convert_pack_double_hq_be MAKE_UNPACK_FUNC_NAME (double_hq_be)
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static AudioConvertUnpack unpack_funcs[] = {
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u8),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s8),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u8),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s8),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u16_le),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s16_le),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u16_be),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s16_be),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u24_le),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s24_le),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u24_be),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s24_be),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u32_le),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s32_le),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u32_be),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s32_be),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (float_le),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (float_be),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (double_le),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (double_be),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (float_hq_le),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (float_hq_be),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (double_hq_le),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (double_hq_be),
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};
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static AudioConvertPack pack_funcs[] = {
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (u8),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (s8),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (u8),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (s8),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (u16_le),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (s16_le),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (u16_be),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (s16_be),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (u24_le),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (s24_le),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (u24_be),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (s24_be),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (u32_le),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (s32_le),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (u32_be),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (s32_be),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (float_le),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (float_be),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (double_le),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (double_be),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (float_hq_le),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (float_hq_be),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (double_hq_le),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (double_hq_be),
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};
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static gint
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audio_convert_get_func_index (AudioConvertFmt * fmt)
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{
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gint index = 0;
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if (fmt->is_int) {
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index += (fmt->width / 8 - 1) * 4;
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index += fmt->endianness == G_LITTLE_ENDIAN ? 0 : 2;
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index += fmt->sign ? 1 : 0;
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} else {
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/* this is float/double */
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index = 16;
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index += (fmt->width == 32) ? 0 : 2;
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index += (fmt->endianness == G_LITTLE_ENDIAN) ? 0 : 1;
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}
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return index;
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}
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static gboolean
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check_default (AudioConvertCtx * ctx, AudioConvertFmt * fmt)
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{
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if (ctx->in.is_int || ctx->out.is_int) {
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return (fmt->width == 32 && fmt->depth == 32 &&
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fmt->endianness == G_BYTE_ORDER && fmt->sign == TRUE);
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} else {
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return (fmt->width == 64 && fmt->endianness == G_BYTE_ORDER);
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}
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}
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gboolean
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audio_convert_clean_fmt (AudioConvertFmt * fmt)
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{
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g_return_val_if_fail (fmt != NULL, FALSE);
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g_free (fmt->pos);
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fmt->pos = NULL;
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return TRUE;
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}
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gboolean
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audio_convert_prepare_context (AudioConvertCtx * ctx, AudioConvertFmt * in,
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AudioConvertFmt * out)
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{
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gint idx_in, idx_out;
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g_return_val_if_fail (ctx != NULL, FALSE);
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g_return_val_if_fail (in != NULL, FALSE);
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g_return_val_if_fail (out != NULL, FALSE);
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/* first clean the existing context */
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audio_convert_clean_context (ctx);
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ctx->in = *in;
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ctx->out = *out;
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gst_channel_mix_setup_matrix (ctx);
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idx_in = audio_convert_get_func_index (in);
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ctx->unpack = unpack_funcs[idx_in];
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idx_out = audio_convert_get_func_index (out);
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ctx->pack = pack_funcs[idx_out];
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/* if both formats are float/double use double as intermediate format and
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* and switch mixing */
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if (in->is_int || out->is_int) {
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GST_INFO ("use int mixing");
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ctx->channel_mix = (AudioConvertMix) gst_channel_mix_mix_int;
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} else {
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GST_INFO ("use float mixing");
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ctx->channel_mix = (AudioConvertMix) gst_channel_mix_mix_float;
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/* Bump the pack/unpack function indices by 4 to use double as intermediary
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* format (float_hq_*, double_hq_* functions).*/
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ctx->unpack = unpack_funcs[idx_in + 4];
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ctx->pack = pack_funcs[idx_out + 4];
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}
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GST_INFO ("unitsizes: %d -> %d", in->unit_size, out->unit_size);
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/* check if input is in default format */
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ctx->in_default = check_default (ctx, in);
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/* check if channel mixer is passthrough */
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ctx->mix_passthrough = gst_channel_mix_passthrough (ctx);
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/* check if output is in default format */
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ctx->out_default = check_default (ctx, out);
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GST_INFO ("in default %d, mix passthrough %d, out default %d",
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ctx->in_default, ctx->mix_passthrough, ctx->out_default);
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ctx->in_scale = (in->is_int) ? (32 - in->depth) : 0;
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ctx->out_scale = (out->is_int) ? (32 - out->depth) : 0;
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return TRUE;
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}
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gboolean
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audio_convert_clean_context (AudioConvertCtx * ctx)
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{
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g_return_val_if_fail (ctx != NULL, FALSE);
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audio_convert_clean_fmt (&ctx->in);
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audio_convert_clean_fmt (&ctx->out);
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gst_channel_mix_unset_matrix (ctx);
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g_free (ctx->tmpbuf);
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ctx->tmpbuf = NULL;
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ctx->tmpbufsize = 0;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
audio_convert_get_sizes (AudioConvertCtx * ctx, gint samples, gint * srcsize,
|
|
gint * dstsize)
|
|
{
|
|
g_return_val_if_fail (ctx != NULL, FALSE);
|
|
|
|
if (srcsize)
|
|
*srcsize = samples * ctx->in.unit_size;
|
|
if (dstsize)
|
|
*dstsize = samples * ctx->out.unit_size;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
audio_convert_convert (AudioConvertCtx * ctx, gpointer src,
|
|
gpointer dst, gint samples, gboolean src_writable)
|
|
{
|
|
gint insize, outsize, size;
|
|
gpointer outbuf, tmpbuf;
|
|
gint intemp = 0, outtemp = 0, biggest;
|
|
|
|
g_return_val_if_fail (ctx != NULL, FALSE);
|
|
g_return_val_if_fail (src != NULL, FALSE);
|
|
g_return_val_if_fail (dst != NULL, FALSE);
|
|
g_return_val_if_fail (samples >= 0, FALSE);
|
|
|
|
if (samples == 0)
|
|
return TRUE;
|
|
|
|
insize = ctx->in.unit_size * samples;
|
|
outsize = ctx->out.unit_size * samples;
|
|
|
|
/* find biggest temp buffer size */
|
|
size = (ctx->in.is_int || ctx->out.is_int) ?
|
|
sizeof (gint32) : sizeof (gdouble);
|
|
|
|
if (!ctx->in_default)
|
|
intemp = insize * size * 8 / ctx->in.width;
|
|
if (!ctx->mix_passthrough)
|
|
outtemp = outsize * size * 8 / ctx->out.width;
|
|
biggest = MAX (intemp, outtemp);
|
|
|
|
/* see if one of the buffers can be used as temp */
|
|
if ((outsize >= biggest) && (ctx->out.unit_size <= size))
|
|
tmpbuf = dst;
|
|
else if ((insize >= biggest) && src_writable && (ctx->in.unit_size >= size))
|
|
tmpbuf = src;
|
|
else {
|
|
if (biggest > ctx->tmpbufsize) {
|
|
ctx->tmpbuf = g_realloc (ctx->tmpbuf, biggest);
|
|
ctx->tmpbufsize = biggest;
|
|
}
|
|
tmpbuf = ctx->tmpbuf;
|
|
}
|
|
|
|
/* start conversion */
|
|
if (!ctx->in_default) {
|
|
/* check if final conversion */
|
|
if (!(ctx->out_default && ctx->mix_passthrough))
|
|
outbuf = tmpbuf;
|
|
else
|
|
outbuf = dst;
|
|
|
|
/* unpack to default format */
|
|
ctx->unpack (src, outbuf, ctx->in_scale, samples * ctx->in.channels);
|
|
|
|
src = outbuf;
|
|
}
|
|
|
|
if (!ctx->mix_passthrough) {
|
|
/* check if final conversion */
|
|
if (!ctx->out_default)
|
|
outbuf = tmpbuf;
|
|
else
|
|
outbuf = dst;
|
|
|
|
/* convert channels */
|
|
ctx->channel_mix (ctx, src, outbuf, samples);
|
|
|
|
src = outbuf;
|
|
}
|
|
|
|
if (!ctx->out_default) {
|
|
/* pack default format into dst */
|
|
ctx->pack (src, dst, ctx->out_scale, samples * ctx->out.channels);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|