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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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Original commit message from CVS: * gst/audioconvert/audioconvert.c: (audio_convert_convert): Prevent overflows with big buffer when calculating the size of the intermediate buffer by using gst_util_uint64_scale() instead of plain arithmetics. Fixes bug #552801.
600 lines
25 KiB
C
600 lines
25 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 <math.h>
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#include <string.h>
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#include "gstchannelmix.h"
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#include "gstaudioquantize.h"
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#include "audioconvert.h"
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#include "gst/floatcast/floatcast.h"
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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 = floor ((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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/* unpack from int to float 64 (double) */
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#define MAKE_UNPACK_FUNC_IF(name, stride, sign, READ_FUNC) \
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static void \
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MAKE_UNPACK_FUNC_NAME (name) (guint8 * src, gdouble * dst, gint scale, \
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gint count) \
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{ \
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gdouble tmp; \
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for (; count; count--) { \
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tmp = (gdouble) ((((gint32) READ_FUNC (src)) << scale) ^ (sign)); \
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*dst++ = tmp * (1.0 / 2147483647.0); \
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src += stride; \
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} \
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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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MAKE_UNPACK_FUNC_IF (u8_float, 1, SIGNED, READ8);
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MAKE_UNPACK_FUNC_IF (s8_float, 1, 0, READ8);
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MAKE_UNPACK_FUNC_IF (u16_le_float, 2, SIGNED, READ16_FROM_LE);
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MAKE_UNPACK_FUNC_IF (s16_le_float, 2, 0, READ16_FROM_LE);
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MAKE_UNPACK_FUNC_IF (u16_be_float, 2, SIGNED, READ16_FROM_BE);
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MAKE_UNPACK_FUNC_IF (s16_be_float, 2, 0, READ16_FROM_BE);
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MAKE_UNPACK_FUNC_IF (u24_le_float, 3, SIGNED, READ24_FROM_LE);
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MAKE_UNPACK_FUNC_IF (s24_le_float, 3, 0, READ24_FROM_LE);
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MAKE_UNPACK_FUNC_IF (u24_be_float, 3, SIGNED, READ24_FROM_BE);
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MAKE_UNPACK_FUNC_IF (s24_be_float, 3, 0, READ24_FROM_BE);
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MAKE_UNPACK_FUNC_IF (u32_le_float, 4, SIGNED, READ32_FROM_LE);
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MAKE_UNPACK_FUNC_IF (s32_le_float, 4, 0, READ32_FROM_LE);
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MAKE_UNPACK_FUNC_IF (u32_be_float, 4, SIGNED, READ32_FROM_BE);
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MAKE_UNPACK_FUNC_IF (s32_be_float, 4, 0, READ32_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 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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* 2) 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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* 3) 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, guint8 * dst, \
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gint scale, gint count) \
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{ \
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gint32 tmp; \
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for (;count; count--) { \
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tmp = (*src++ ^ (sign)) >> scale; \
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WRITE_FUNC (dst, tmp); \
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dst += stride; \
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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) \
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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 ((type) ((*src++) * (1.0 / 2147483647.0))); \
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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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/* pack from float 64 (double) to signed int.
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* the floats are already in the correct range. Only a cast is needed.
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*/
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#define MAKE_PACK_FUNC_FI_S(name, stride, WRITE_FUNC) \
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static void \
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MAKE_PACK_FUNC_NAME (name) (gdouble * src, guint8 * dst, gint scale, \
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gint count) \
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{ \
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gint32 tmp; \
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for (; count; count--) { \
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tmp = (gint32) (*src); \
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WRITE_FUNC (dst, tmp); \
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src++; \
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dst += stride; \
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} \
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}
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/* pack from float 64 (double) to unsigned int.
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* the floats are already in the correct range. Only a cast is needed
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* and an addition of 2^(target_depth-1) to get in the correct unsigned
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* range. */
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#define MAKE_PACK_FUNC_FI_U(name, stride, WRITE_FUNC) \
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static void \
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MAKE_PACK_FUNC_NAME (name) (gdouble * src, guint8 * dst, gint scale, \
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gint count) \
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{ \
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guint32 tmp; \
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gdouble limit = (1U<<(32-scale-1)); \
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for (; count; count--) { \
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tmp = (guint32) (*src + limit); \
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WRITE_FUNC (dst, tmp); \
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src++; \
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dst += stride; \
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} \
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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);
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MAKE_PACK_FUNC_IF (float_be, gfloat, GFLOAT_TO_BE);
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MAKE_PACK_FUNC_IF (double_le, gdouble, GDOUBLE_TO_LE);
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MAKE_PACK_FUNC_IF (double_be, gdouble, GDOUBLE_TO_BE);
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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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MAKE_PACK_FUNC_FI_U (u8_float, 1, WRITE8);
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MAKE_PACK_FUNC_FI_S (s8_float, 1, WRITE8);
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MAKE_PACK_FUNC_FI_U (u16_le_float, 2, WRITE16_TO_LE);
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MAKE_PACK_FUNC_FI_S (s16_le_float, 2, WRITE16_TO_LE);
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MAKE_PACK_FUNC_FI_U (u16_be_float, 2, WRITE16_TO_BE);
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MAKE_PACK_FUNC_FI_S (s16_be_float, 2, WRITE16_TO_BE);
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MAKE_PACK_FUNC_FI_U (u24_le_float, 3, WRITE24_TO_LE);
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MAKE_PACK_FUNC_FI_S (s24_le_float, 3, WRITE24_TO_LE);
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MAKE_PACK_FUNC_FI_U (u24_be_float, 3, WRITE24_TO_BE);
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MAKE_PACK_FUNC_FI_S (s24_be_float, 3, WRITE24_TO_BE);
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MAKE_PACK_FUNC_FI_U (u32_le_float, 4, WRITE32_TO_LE);
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MAKE_PACK_FUNC_FI_S (s32_le_float, 4, WRITE32_TO_LE);
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MAKE_PACK_FUNC_FI_U (u32_be_float, 4, WRITE32_TO_BE);
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MAKE_PACK_FUNC_FI_S (s32_be_float, 4, WRITE32_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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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u8_float),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s8_float),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u8_float),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s8_float),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u16_le_float),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s16_le_float),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u16_be_float),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s16_be_float),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u24_le_float),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s24_le_float),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u24_be_float),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s24_be_float),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u32_le_float),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s32_le_float),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (u32_be_float),
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(AudioConvertUnpack) MAKE_UNPACK_FUNC_NAME (s32_be_float),
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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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(AudioConvertPack) MAKE_PACK_FUNC_NAME (u8_float),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (s8_float),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (u8_float),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (s8_float),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (u16_le_float),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (s16_le_float),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (u16_be_float),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (s16_be_float),
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(AudioConvertPack) MAKE_PACK_FUNC_NAME (u24_le_float),
|
|
(AudioConvertPack) MAKE_PACK_FUNC_NAME (s24_le_float),
|
|
(AudioConvertPack) MAKE_PACK_FUNC_NAME (u24_be_float),
|
|
(AudioConvertPack) MAKE_PACK_FUNC_NAME (s24_be_float),
|
|
(AudioConvertPack) MAKE_PACK_FUNC_NAME (u32_le_float),
|
|
(AudioConvertPack) MAKE_PACK_FUNC_NAME (s32_le_float),
|
|
(AudioConvertPack) MAKE_PACK_FUNC_NAME (u32_be_float),
|
|
(AudioConvertPack) MAKE_PACK_FUNC_NAME (s32_be_float),
|
|
};
|
|
|
|
#define DOUBLE_INTERMEDIATE_FORMAT(ctx) \
|
|
((!ctx->in.is_int && !ctx->out.is_int) || (ctx->ns != NOISE_SHAPING_NONE))
|
|
|
|
static gint
|
|
audio_convert_get_func_index (AudioConvertCtx * ctx, AudioConvertFmt * fmt)
|
|
{
|
|
gint index = 0;
|
|
|
|
if (fmt->is_int) {
|
|
index += (fmt->width / 8 - 1) * 4;
|
|
index += fmt->endianness == G_LITTLE_ENDIAN ? 0 : 2;
|
|
index += fmt->sign ? 1 : 0;
|
|
index += (ctx->ns == NOISE_SHAPING_NONE) ? 0 : 24;
|
|
} else {
|
|
/* this is float/double */
|
|
index = 16;
|
|
index += (fmt->width == 32) ? 0 : 2;
|
|
index += (fmt->endianness == G_LITTLE_ENDIAN) ? 0 : 1;
|
|
index += (DOUBLE_INTERMEDIATE_FORMAT (ctx)) ? 4 : 0;
|
|
}
|
|
|
|
return index;
|
|
}
|
|
|
|
static inline gboolean
|
|
check_default (AudioConvertCtx * ctx, AudioConvertFmt * fmt)
|
|
{
|
|
if (!DOUBLE_INTERMEDIATE_FORMAT (ctx)) {
|
|
return (fmt->width == 32 && fmt->depth == 32 &&
|
|
fmt->endianness == G_BYTE_ORDER && fmt->sign == TRUE);
|
|
} else {
|
|
return (fmt->width == 64 && fmt->endianness == G_BYTE_ORDER);
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
audio_convert_clean_fmt (AudioConvertFmt * fmt)
|
|
{
|
|
g_return_val_if_fail (fmt != NULL, FALSE);
|
|
|
|
g_free (fmt->pos);
|
|
fmt->pos = NULL;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
gboolean
|
|
audio_convert_prepare_context (AudioConvertCtx * ctx, AudioConvertFmt * in,
|
|
AudioConvertFmt * out, GstAudioConvertDithering dither,
|
|
GstAudioConvertNoiseShaping ns)
|
|
{
|
|
gint idx_in, idx_out;
|
|
|
|
g_return_val_if_fail (ctx != NULL, FALSE);
|
|
g_return_val_if_fail (in != NULL, FALSE);
|
|
g_return_val_if_fail (out != NULL, FALSE);
|
|
|
|
/* first clean the existing context */
|
|
audio_convert_clean_context (ctx);
|
|
|
|
g_return_val_if_fail (in->unpositioned_layout == out->unpositioned_layout,
|
|
FALSE);
|
|
|
|
ctx->in = *in;
|
|
ctx->out = *out;
|
|
|
|
/* Don't dither or apply noise shaping if out depth is bigger than 20 bits
|
|
* as DA converters only can do a SNR up to 20 bits in reality.
|
|
* Also don't dither or apply noise shaping if target depth is larger than
|
|
* source depth. */
|
|
if (ctx->out.depth <= 20 && (!ctx->in.is_int
|
|
|| ctx->in.depth >= ctx->out.depth)) {
|
|
ctx->dither = dither;
|
|
ctx->ns = ns;
|
|
} else {
|
|
ctx->dither = DITHER_NONE;
|
|
ctx->ns = NOISE_SHAPING_NONE;
|
|
}
|
|
|
|
/* Use simple error feedback when output sample rate is smaller than
|
|
* 32000 as the other methods might move the noise to audible ranges */
|
|
if (ctx->ns > NOISE_SHAPING_ERROR_FEEDBACK && ctx->out.rate < 32000)
|
|
ctx->ns = NOISE_SHAPING_ERROR_FEEDBACK;
|
|
|
|
gst_channel_mix_setup_matrix (ctx);
|
|
|
|
idx_in = audio_convert_get_func_index (ctx, in);
|
|
ctx->unpack = unpack_funcs[idx_in];
|
|
|
|
idx_out = audio_convert_get_func_index (ctx, out);
|
|
ctx->pack = pack_funcs[idx_out];
|
|
|
|
/* if both formats are float/double or we use noise shaping use double as
|
|
* intermediate format and and switch mixing */
|
|
if (!DOUBLE_INTERMEDIATE_FORMAT (ctx)) {
|
|
GST_INFO ("use int mixing");
|
|
ctx->channel_mix = (AudioConvertMix) gst_channel_mix_mix_int;
|
|
} else {
|
|
GST_INFO ("use float mixing");
|
|
ctx->channel_mix = (AudioConvertMix) gst_channel_mix_mix_float;
|
|
}
|
|
GST_INFO ("unitsizes: %d -> %d", in->unit_size, out->unit_size);
|
|
|
|
/* check if input is in default format */
|
|
ctx->in_default = check_default (ctx, in);
|
|
/* check if channel mixer is passthrough */
|
|
ctx->mix_passthrough = gst_channel_mix_passthrough (ctx);
|
|
/* check if output is in default format */
|
|
ctx->out_default = check_default (ctx, out);
|
|
|
|
GST_INFO ("in default %d, mix passthrough %d, out default %d",
|
|
ctx->in_default, ctx->mix_passthrough, ctx->out_default);
|
|
|
|
ctx->in_scale = (in->is_int) ? (32 - in->depth) : 0;
|
|
ctx->out_scale = (out->is_int) ? (32 - out->depth) : 0;
|
|
|
|
gst_audio_quantize_setup (ctx);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
audio_convert_clean_context (AudioConvertCtx * ctx)
|
|
{
|
|
g_return_val_if_fail (ctx != NULL, FALSE);
|
|
|
|
gst_audio_quantize_free (ctx);
|
|
audio_convert_clean_fmt (&ctx->in);
|
|
audio_convert_clean_fmt (&ctx->out);
|
|
gst_channel_mix_unset_matrix (ctx);
|
|
|
|
g_free (ctx->tmpbuf);
|
|
ctx->tmpbuf = NULL;
|
|
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)
|
|
{
|
|
guint insize, outsize, size;
|
|
gpointer outbuf, tmpbuf;
|
|
guint 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 = (DOUBLE_INTERMEDIATE_FORMAT (ctx)) ? sizeof (gdouble)
|
|
: sizeof (gint32);
|
|
|
|
if (!ctx->in_default)
|
|
intemp = gst_util_uint64_scale (insize, size * 8, ctx->in.width);
|
|
if (!ctx->mix_passthrough || !ctx->out_default)
|
|
outtemp = gst_util_uint64_scale (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;
|
|
}
|
|
|
|
/* we only need to quantize if output format is int */
|
|
if (ctx->out.is_int) {
|
|
if (ctx->out_default)
|
|
outbuf = dst;
|
|
else
|
|
outbuf = tmpbuf;
|
|
ctx->quantize (ctx, src, outbuf, samples);
|
|
}
|
|
|
|
if (!ctx->out_default) {
|
|
/* pack default format into dst */
|
|
ctx->pack (src, dst, ctx->out_scale, samples * ctx->out.channels);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|