/* GStreamer

 * Copyright (C) <2012> Wim Taymans <wim.taymans@gmail.com>

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 */

#ifdef HAVE_CONFIG_H

#  include "config.h"

#endif

#include <string.h>

#include "audio-format.h"

#include "gstaudiopack.h"

#ifdef HAVE_ORC

#include <orc/orcfunctions.h>

#else

#define orc_memset memset

#endif

#if G_BYTE_ORDER == G_LITTLE_ENDIAN

# define audio_orc_unpack_s16le audio_orc_unpack_s16

# define audio_orc_unpack_s16le_trunc audio_orc_unpack_s16_trunc

# define audio_orc_unpack_s16be audio_orc_unpack_s16_swap

# define audio_orc_unpack_s16be_trunc audio_orc_unpack_s16_swap_trunc

# define audio_orc_unpack_u16le audio_orc_unpack_u16

# define audio_orc_unpack_u16le_trunc audio_orc_unpack_u16_trunc

# define audio_orc_unpack_u16be audio_orc_unpack_u16_swap

# define audio_orc_unpack_u16be_trunc audio_orc_unpack_u16_swap_trunc

# define audio_orc_unpack_s24_32le audio_orc_unpack_s24_32

# define audio_orc_unpack_s24_32be audio_orc_unpack_s24_32_swap

# define audio_orc_unpack_u24_32le audio_orc_unpack_u24_32

# define audio_orc_unpack_u24_32be audio_orc_unpack_u24_32_swap

# define audio_orc_unpack_s32le audio_orc_unpack_s32

# define audio_orc_unpack_s32be audio_orc_unpack_s32_swap

# define audio_orc_unpack_u32le audio_orc_unpack_u32

# define audio_orc_unpack_u32be audio_orc_unpack_u32_swap

# define audio_orc_unpack_f32le audio_orc_unpack_f32

# define audio_orc_unpack_f32be audio_orc_unpack_f32_swap

# define audio_orc_unpack_f64le audio_orc_unpack_f64

# define audio_orc_unpack_f64be audio_orc_unpack_f64_swap

# define audio_orc_pack_s16le audio_orc_pack_s16

# define audio_orc_pack_s16be audio_orc_pack_s16_swap

# define audio_orc_pack_u16le audio_orc_pack_u16

# define audio_orc_pack_u16be audio_orc_pack_u16_swap

# define audio_orc_pack_s24_32le audio_orc_pack_s24_32

# define audio_orc_pack_s24_32be audio_orc_pack_s24_32_swap

# define audio_orc_pack_u24_32le audio_orc_pack_u24_32

# define audio_orc_pack_u24_32be audio_orc_pack_u24_32_swap

# define audio_orc_pack_s32le audio_orc_pack_s32

# define audio_orc_pack_s32be audio_orc_pack_s32_swap

# define audio_orc_pack_u32le audio_orc_pack_u32

# define audio_orc_pack_u32be audio_orc_pack_u32_swap

# define audio_orc_pack_f32le audio_orc_pack_f32

# define audio_orc_pack_f32be audio_orc_pack_f32_swap

# define audio_orc_pack_f64le audio_orc_pack_f64

# define audio_orc_pack_f64be audio_orc_pack_f64_swap

#else

# define audio_orc_unpack_s16le audio_orc_unpack_s16_swap

# define audio_orc_unpack_s16le_trunc audio_orc_unpack_s16_swap_trunc

# define audio_orc_unpack_s16be audio_orc_unpack_s16

# define audio_orc_unpack_s16be_trunc audio_orc_unpack_s16_trunc

# define audio_orc_unpack_u16le audio_orc_unpack_u16_swap

# define audio_orc_unpack_u16le_trunc audio_orc_unpack_u16_swap_trunc

# define audio_orc_unpack_u16be audio_orc_unpack_u16

# define audio_orc_unpack_u16be_trunc audio_orc_unpack_u16_trunc

# define audio_orc_unpack_s24_32le audio_orc_unpack_s24_32_swap

# define audio_orc_unpack_s24_32be audio_orc_unpack_s24_32

# define audio_orc_unpack_u24_32le audio_orc_unpack_u24_32_swap

# define audio_orc_unpack_u24_32be audio_orc_unpack_u24_32

# define audio_orc_unpack_s32le audio_orc_unpack_s32_swap

# define audio_orc_unpack_s32be audio_orc_unpack_s32

# define audio_orc_unpack_u32le audio_orc_unpack_u32_swap

# define audio_orc_unpack_u32be audio_orc_unpack_u32

# define audio_orc_unpack_f32le audio_orc_unpack_f32_swap

# define audio_orc_unpack_f32be audio_orc_unpack_f32

# define audio_orc_unpack_f64le audio_orc_unpack_f64_swap

# define audio_orc_unpack_f64be audio_orc_unpack_f64

# define audio_orc_pack_s16le audio_orc_pack_s16_swap

# define audio_orc_pack_s16be audio_orc_pack_s16

# define audio_orc_pack_u16le audio_orc_pack_u16_swap

# define audio_orc_pack_u16be audio_orc_pack_u16

# define audio_orc_pack_s24_32le audio_orc_pack_s24_32_swap

# define audio_orc_pack_s24_32be audio_orc_pack_s24_32

# define audio_orc_pack_u24_32le audio_orc_pack_u24_32_swap

# define audio_orc_pack_u24_32be audio_orc_pack_u24_32

# define audio_orc_pack_s32le audio_orc_pack_s32_swap

# define audio_orc_pack_s32be audio_orc_pack_s32

# define audio_orc_pack_u32le audio_orc_pack_u32_swap

# define audio_orc_pack_u32be audio_orc_pack_u32

# define audio_orc_pack_f32le audio_orc_pack_f32_swap

# define audio_orc_pack_f32be audio_orc_pack_f32

# define audio_orc_pack_f64le audio_orc_pack_f64_swap

# define audio_orc_pack_f64be audio_orc_pack_f64

#endif

#define MAKE_ORC_PACK_UNPACK(fmt,fmt_t)                         \

static void unpack_ ##fmt (const GstAudioFormatInfo *info,      \

    GstAudioPackFlags flags, gpointer dest,                     \

    const gpointer data, gint length) {                         \

  if (flags & GST_AUDIO_PACK_FLAG_TRUNCATE_RANGE)               \

    audio_orc_unpack_ ##fmt_t (dest, data, length);             \

  else                                                          \

    audio_orc_unpack_ ##fmt (dest, data, length);               \

}                                                               \

static void pack_ ##fmt (const GstAudioFormatInfo *info,        \

    GstAudioPackFlags flags, const gpointer src,                \

    gpointer data, gint length) {                               \

  audio_orc_pack_ ##fmt (data, src, length);                    \

}

#define PACK_S8 GST_AUDIO_FORMAT_S32, unpack_s8, pack_s8

MAKE_ORC_PACK_UNPACK (s8, s8_trunc)

#define PACK_U8 GST_AUDIO_FORMAT_S32, unpack_u8, pack_u8

    MAKE_ORC_PACK_UNPACK (u8, u8_trunc)

#define PACK_S16LE GST_AUDIO_FORMAT_S32, unpack_s16le, pack_s16le

    MAKE_ORC_PACK_UNPACK (s16le, s16le_trunc)

#define PACK_S16BE GST_AUDIO_FORMAT_S32, unpack_s16be, pack_s16be

    MAKE_ORC_PACK_UNPACK (s16be, s16be_trunc)

#define PACK_U16LE GST_AUDIO_FORMAT_S32, unpack_u16le, pack_u16le

    MAKE_ORC_PACK_UNPACK (u16le, u16le_trunc)

#define PACK_U16BE GST_AUDIO_FORMAT_S32, unpack_u16be, pack_u16be

    MAKE_ORC_PACK_UNPACK (u16be, u16be_trunc)

#define PACK_S24_32LE GST_AUDIO_FORMAT_S32, unpack_s24_32le, pack_s24_32le

    MAKE_ORC_PACK_UNPACK (s24_32le, s24_32le)

#define PACK_S24_32BE GST_AUDIO_FORMAT_S32, unpack_s24_32be, pack_s24_32be

    MAKE_ORC_PACK_UNPACK (s24_32be, s24_32be)

#define PACK_U24_32LE GST_AUDIO_FORMAT_S32, unpack_u24_32le, pack_u24_32le

    MAKE_ORC_PACK_UNPACK (u24_32le, u24_32le)

#define PACK_U24_32BE GST_AUDIO_FORMAT_S32, unpack_u24_32be, pack_u24_32be

    MAKE_ORC_PACK_UNPACK (u24_32be, u24_32be)

#define PACK_S32LE GST_AUDIO_FORMAT_S32, unpack_s32le, pack_s32le

    MAKE_ORC_PACK_UNPACK (s32le, s32le)

#define PACK_S32BE GST_AUDIO_FORMAT_S32, unpack_s32be, pack_s32be

    MAKE_ORC_PACK_UNPACK (s32be, s32be)

#define PACK_U32LE GST_AUDIO_FORMAT_S32, unpack_u32le, pack_u32le

    MAKE_ORC_PACK_UNPACK (u32le, u32le)

#define PACK_U32BE GST_AUDIO_FORMAT_S32, unpack_u32be, pack_u32be

    MAKE_ORC_PACK_UNPACK (u32be, u32be)

#define SIGNED  (1U<<31)

/* pack from signed integer 32 to integer */

#define WRITE24_TO_LE(p,v) p[0] = v & 0xff; p[1] = (v >> 8) & 0xff; p[2] = (v >> 16) & 0xff

#define WRITE24_TO_BE(p,v) p[2] = v & 0xff; p[1] = (v >> 8) & 0xff; p[0] = (v >> 16) & 0xff

#define READ24_FROM_LE(p) (p[0] | (p[1] << 8) | (p[2] << 16))

#define READ24_FROM_BE(p) (p[2] | (p[1] << 8) | (p[0] << 16))

#define MAKE_PACK_UNPACK(name, stride, sign, scale, READ_FUNC, WRITE_FUNC)     \

static void unpack_ ##name (const GstAudioFormatInfo *info,             \

    GstAudioPackFlags flags, gpointer dest,                             \

    const gpointer data, gint length)                                   \

{                                                                       \

  guint32 *d = dest;                                                    \

  guint8 *s = data;                                                     \

  for (;length; length--) {                                             \

    *d++ = (((gint32) READ_FUNC (s)) << scale) ^ (sign);                \

    s += stride;                                                        \

  }                                                                     \

}                                                                       \

static void pack_ ##name (const GstAudioFormatInfo *info,               \

    GstAudioPackFlags flags, const gpointer src,                        \

    gpointer data, gint length)                                         \

{                                                                       \

  gint32 tmp;                                                           \

  guint32 *s = src;                                                     \

  guint8 *d = data;                                                     \

  for (;length; length--) {                                             \

    tmp = (*s++ ^ (sign)) >> scale;                                     \

    WRITE_FUNC (d, tmp);                                                \

    d += stride;                                                        \

  }                                                                     \

}

#define PACK_S24LE GST_AUDIO_FORMAT_S32, unpack_s24le, pack_s24le

    MAKE_PACK_UNPACK (s24le, 3, 0, 8, READ24_FROM_LE, WRITE24_TO_LE)

#define PACK_U24LE GST_AUDIO_FORMAT_S32, unpack_u24le, pack_u24le

    MAKE_PACK_UNPACK (u24le, 3, SIGNED, 8, READ24_FROM_LE, WRITE24_TO_LE)

#define PACK_S24BE GST_AUDIO_FORMAT_S32, unpack_s24be, pack_s24be

    MAKE_PACK_UNPACK (s24be, 3, 0, 8, READ24_FROM_BE, WRITE24_TO_BE)

#define PACK_U24BE GST_AUDIO_FORMAT_S32, unpack_u24be, pack_u24be

    MAKE_PACK_UNPACK (u24be, 3, SIGNED, 8, READ24_FROM_BE, WRITE24_TO_BE)

#define PACK_S20LE GST_AUDIO_FORMAT_S32, unpack_s20le, pack_s20le

    MAKE_PACK_UNPACK (s20le, 3, 0, 12, READ24_FROM_LE, WRITE24_TO_LE)

#define PACK_U20LE GST_AUDIO_FORMAT_S32, unpack_u20le, pack_u20le

    MAKE_PACK_UNPACK (u20le, 3, SIGNED, 12, READ24_FROM_LE, WRITE24_TO_LE)

#define PACK_S20BE GST_AUDIO_FORMAT_S32, unpack_s20be, pack_s20be

    MAKE_PACK_UNPACK (s20be, 3, 0, 12, READ24_FROM_BE, WRITE24_TO_BE)

#define PACK_U20BE GST_AUDIO_FORMAT_S32, unpack_u20be, pack_u20be

    MAKE_PACK_UNPACK (u20be, 3, SIGNED, 12, READ24_FROM_BE, WRITE24_TO_BE)

#define PACK_S18LE GST_AUDIO_FORMAT_S32, unpack_s18le, pack_s18le

    MAKE_PACK_UNPACK (s18le, 3, 0, 14, READ24_FROM_LE, WRITE24_TO_LE)

#define PACK_U18LE GST_AUDIO_FORMAT_S32, unpack_u18le, pack_u18le

    MAKE_PACK_UNPACK (u18le, 3, SIGNED, 14, READ24_FROM_LE, WRITE24_TO_LE)

#define PACK_S18BE GST_AUDIO_FORMAT_S32, unpack_s18be, pack_s18be

    MAKE_PACK_UNPACK (s18be, 3, 0, 14, READ24_FROM_BE, WRITE24_TO_BE)

#define PACK_U18BE GST_AUDIO_FORMAT_S32, unpack_u18be, pack_u18be

    MAKE_PACK_UNPACK (u18be, 3, SIGNED, 14, READ24_FROM_BE, WRITE24_TO_BE)

#define PACK_F32LE GST_AUDIO_FORMAT_F64, unpack_f32le, pack_f32le

    MAKE_ORC_PACK_UNPACK (f32le, f32le)

#define PACK_F32BE GST_AUDIO_FORMAT_F64, unpack_f32be, pack_f32be

    MAKE_ORC_PACK_UNPACK (f32be, f32be)

#define PACK_F64LE GST_AUDIO_FORMAT_F64, unpack_f64le, pack_f64le

    MAKE_ORC_PACK_UNPACK (f64le, f64le)

#define PACK_F64BE GST_AUDIO_FORMAT_F64, unpack_f64be, pack_f64be

    MAKE_ORC_PACK_UNPACK (f64be, f64be)

#define SINT (GST_AUDIO_FORMAT_FLAG_INTEGER | GST_AUDIO_FORMAT_FLAG_SIGNED)

#define SINT_PACK (SINT | GST_AUDIO_FORMAT_FLAG_UNPACK)

#define UINT (GST_AUDIO_FORMAT_FLAG_INTEGER)

#define FLOAT (GST_AUDIO_FORMAT_FLAG_FLOAT)

#define FLOAT_PACK (FLOAT | GST_AUDIO_FORMAT_FLAG_UNPACK)

#define MAKE_FORMAT(str,desc,flags,end,width,depth,silent, pack) \

  { GST_AUDIO_FORMAT_ ##str, G_STRINGIFY(str), desc, flags, end, width, depth, silent, pack }

#define SILENT_0         { 0, 0, 0, 0, 0, 0, 0, 0 }

#define SILENT_U8        { 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80 }

#define SILENT_U16LE     { 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80 }

#define SILENT_U16BE     { 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00 }

#define SILENT_U24_32LE  { 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x80, 0x00 }

#define SILENT_U24_32BE  { 0x00, 0x80, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00 }

#define SILENT_U32LE     { 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x80 }

#define SILENT_U32BE     { 0x80, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 }

#define SILENT_U24LE     { 0x00, 0x00, 0x80, 0x00, 0x00, 0x80 }

#define SILENT_U24BE     { 0x80, 0x00, 0x00, 0x80, 0x00, 0x00 }

#define SILENT_U20LE     { 0x00, 0x00, 0x08, 0x00, 0x00, 0x08 }

#define SILENT_U20BE     { 0x08, 0x00, 0x00, 0x08, 0x00, 0x00 }

#define SILENT_U18LE     { 0x00, 0x00, 0x02, 0x00, 0x00, 0x02 }

#define SILENT_U18BE     { 0x02, 0x00, 0x00, 0x02, 0x00, 0x00 }

     static const GstAudioFormatInfo formats[] = {

       {GST_AUDIO_FORMAT_UNKNOWN, "UNKNOWN", "Unknown audio", 0, 0, 0, 0},

       {GST_AUDIO_FORMAT_ENCODED, "ENCODED", "Encoded audio",

           GST_AUDIO_FORMAT_FLAG_COMPLEX, 0, 0, 0},

       /* 8 bit */

       MAKE_FORMAT (S8, "8-bit signed PCM audio", SINT, 0, 8, 8, SILENT_0,

           PACK_S8),

       MAKE_FORMAT (U8, "8-bit unsigned PCM audio", UINT, 0, 8, 8, SILENT_U8,

           PACK_U8),

       /* 16 bit */

       MAKE_FORMAT (S16LE, "16-bit signed PCM audio", SINT, G_LITTLE_ENDIAN, 16,

           16,

           SILENT_0, PACK_S16LE),

       MAKE_FORMAT (S16BE, "16-bit signed PCM audio", SINT, G_BIG_ENDIAN, 16,

           16,

           SILENT_0, PACK_S16BE),

       MAKE_FORMAT (U16LE, "16-bit unsigned PCM audio", UINT, G_LITTLE_ENDIAN,

           16,

           16, SILENT_U16LE, PACK_U16LE),

       MAKE_FORMAT (U16BE, "16-bit unsigned PCM audio", UINT, G_BIG_ENDIAN, 16,

           16,

           SILENT_U16BE, PACK_U16BE),

       /* 24 bit in low 3 bytes of 32 bits */

       MAKE_FORMAT (S24_32LE, "24-bit signed PCM audio", SINT, G_LITTLE_ENDIAN,

           32,

           24, SILENT_0, PACK_S24_32LE),

       MAKE_FORMAT (S24_32BE, "24-bit signed PCM audio", SINT, G_BIG_ENDIAN, 32,

           24,

           SILENT_0, PACK_S24_32BE),

       MAKE_FORMAT (U24_32LE, "24-bit unsigned PCM audio", UINT,

           G_LITTLE_ENDIAN, 32,

           24, SILENT_U24_32LE, PACK_U24_32LE),

       MAKE_FORMAT (U24_32BE, "24-bit unsigned PCM audio", UINT, G_BIG_ENDIAN,

           32,

           24, SILENT_U24_32BE, PACK_U24_32BE),

       /* 32 bit */

#if G_BYTE_ORDER == G_LITTLE_ENDIAN

       MAKE_FORMAT (S32LE, "32-bit signed PCM audio", SINT_PACK,

           G_LITTLE_ENDIAN, 32,

           32, SILENT_0, PACK_S32LE),

       MAKE_FORMAT (S32BE, "32-bit signed PCM audio", SINT, G_BIG_ENDIAN, 32,

           32,

           SILENT_0, PACK_S32BE),

#else

       MAKE_FORMAT (S32LE, "32-bit signed PCM audio", SINT, G_LITTLE_ENDIAN, 32,

           32,

           SILENT_0, PACK_S32LE),

       MAKE_FORMAT (S32BE, "32-bit signed PCM audio", SINT_PACK, G_BIG_ENDIAN,

           32,

           32,

           SILENT_0, PACK_S32BE),

#endif

       MAKE_FORMAT (U32LE, "32-bit unsigned PCM audio", UINT, G_LITTLE_ENDIAN,

           32,

           32, SILENT_U32LE, PACK_U32LE),

       MAKE_FORMAT (U32BE, "32-bit unsigned PCM audio", UINT, G_BIG_ENDIAN, 32,

           32,

           SILENT_U32BE, PACK_U32BE),

       /* 24 bit in 3 bytes */

       MAKE_FORMAT (S24LE, "24-bit signed PCM audio", SINT, G_LITTLE_ENDIAN, 24,

           24,

           SILENT_0, PACK_S24LE),

       MAKE_FORMAT (S24BE, "24-bit signed PCM audio", SINT, G_BIG_ENDIAN, 24,

           24,

           SILENT_0, PACK_S24BE),

       MAKE_FORMAT (U24LE, "24-bit unsigned PCM audio", UINT, G_LITTLE_ENDIAN,

           24,

           24, SILENT_U24LE, PACK_U24LE),

       MAKE_FORMAT (U24BE, "24-bit unsigned PCM audio", UINT, G_BIG_ENDIAN, 24,

           24,

           SILENT_U24BE, PACK_U24BE),

       /* 20 bit in 3 bytes */

       MAKE_FORMAT (S20LE, "20-bit signed PCM audio", SINT, G_LITTLE_ENDIAN, 24,

           20,

           SILENT_0, PACK_S20LE),

       MAKE_FORMAT (S20BE, "20-bit signed PCM audio", SINT, G_BIG_ENDIAN, 24,

           20,

           SILENT_0, PACK_S20BE),

       MAKE_FORMAT (U20LE, "20-bit unsigned PCM audio", UINT, G_LITTLE_ENDIAN,

           24,

           20, SILENT_U20LE, PACK_U20LE),

       MAKE_FORMAT (U20BE, "20-bit unsigned PCM audio", UINT, G_BIG_ENDIAN, 24,

           20,

           SILENT_U20BE, PACK_U20BE),

       /* 18 bit in 3 bytes */

       MAKE_FORMAT (S18LE, "18-bit signed PCM audio", SINT, G_LITTLE_ENDIAN, 24,

           18,

           SILENT_0, PACK_S18LE),

       MAKE_FORMAT (S18BE, "18-bit signed PCM audio", SINT, G_BIG_ENDIAN, 24,

           18,

           SILENT_0, PACK_S18BE),

       MAKE_FORMAT (U18LE, "18-bit unsigned PCM audio", UINT, G_LITTLE_ENDIAN,

           24,

           18, SILENT_U18LE, PACK_U18LE),

       MAKE_FORMAT (U18BE, "18-bit unsigned PCM audio", UINT, G_BIG_ENDIAN, 24,

           18,

           SILENT_U18BE, PACK_U18BE),

       /* float */

       MAKE_FORMAT (F32LE, "32-bit floating-point audio",

           GST_AUDIO_FORMAT_FLAG_FLOAT, G_LITTLE_ENDIAN, 32, 32, SILENT_0,

           PACK_F32LE),

       MAKE_FORMAT (F32BE, "32-bit floating-point audio",

           GST_AUDIO_FORMAT_FLAG_FLOAT, G_BIG_ENDIAN, 32, 32, SILENT_0,

           PACK_F32BE),

#if G_BYTE_ORDER == G_LITTLE_ENDIAN

       MAKE_FORMAT (F64LE, "64-bit floating-point audio",

           FLOAT_PACK, G_LITTLE_ENDIAN, 64, 64, SILENT_0, PACK_F64LE),

       MAKE_FORMAT (F64BE, "64-bit floating-point audio",

           FLOAT, G_BIG_ENDIAN, 64, 64, SILENT_0, PACK_F64BE)

#else

       MAKE_FORMAT (F64LE, "64-bit floating-point audio",

           FLOAT, G_LITTLE_ENDIAN, 64, 64, SILENT_0, PACK_F64LE),

       MAKE_FORMAT (F64BE, "64-bit floating-point audio",

           FLOAT_PACK, G_BIG_ENDIAN, 64, 64, SILENT_0, PACK_F64BE)

#endif

     };

G_DEFINE_POINTER_TYPE (GstAudioFormatInfo, gst_audio_format_info);

/**

 * gst_audio_format_build_integer:

 * @sign: signed or unsigned format

 * @endianness: G_LITTLE_ENDIAN or G_BIG_ENDIAN

 * @width: amount of bits used per sample

 * @depth: amount of used bits in @width

 *

 * Construct a #GstAudioFormat with given parameters.

 *

 * Returns: a #GstAudioFormat or GST_AUDIO_FORMAT_UNKNOWN when no audio format

 * exists with the given parameters.

 */

GstAudioFormat

gst_audio_format_build_integer (gboolean sign, gint endianness,

    gint width, gint depth)

{

  gint i, e;

  for (i = 0; i < G_N_ELEMENTS (formats); i++) {

    const GstAudioFormatInfo *finfo = &formats[i];

    /* must be int */

    if (!GST_AUDIO_FORMAT_INFO_IS_INTEGER (finfo))

      continue;

    /* width and depth must match */

    if (width != GST_AUDIO_FORMAT_INFO_WIDTH (finfo))

      continue;

    if (depth != GST_AUDIO_FORMAT_INFO_DEPTH (finfo))

      continue;

    /* if there is endianness, it must match */

    e = GST_AUDIO_FORMAT_INFO_ENDIANNESS (finfo);

    if (e && e != endianness)

      continue;

    /* check sign */

    if ((sign && !GST_AUDIO_FORMAT_INFO_IS_SIGNED (finfo)) ||

        (!sign && GST_AUDIO_FORMAT_INFO_IS_SIGNED (finfo)))

      continue;

    return GST_AUDIO_FORMAT_INFO_FORMAT (finfo);

  }

  return GST_AUDIO_FORMAT_UNKNOWN;

}

/**

 * gst_audio_format_from_string:

 * @format: a format string

 *

 * Convert the @format string to its #GstAudioFormat.

 *

 * Returns: the #GstAudioFormat for @format or GST_AUDIO_FORMAT_UNKNOWN when the

 * string is not a known format.

 */

GstAudioFormat

gst_audio_format_from_string (const gchar * format)

{

  guint i;

  g_return_val_if_fail (format != NULL, GST_AUDIO_FORMAT_UNKNOWN);

  for (i = 0; i < G_N_ELEMENTS (formats); i++) {

    if (strcmp (GST_AUDIO_FORMAT_INFO_NAME (&formats[i]), format) == 0)

      return GST_AUDIO_FORMAT_INFO_FORMAT (&formats[i]);

  }

  return GST_AUDIO_FORMAT_UNKNOWN;

}

const gchar *

gst_audio_format_to_string (GstAudioFormat format)

{

  g_return_val_if_fail (format != GST_AUDIO_FORMAT_UNKNOWN, NULL);

  if ((gint) format >= G_N_ELEMENTS (formats))

    return NULL;

  return GST_AUDIO_FORMAT_INFO_NAME (&formats[format]);

}

/**

 * gst_audio_format_get_info:

 * @format: a #GstAudioFormat

 *

 * Get the #GstAudioFormatInfo for @format

 *

 * Returns: The #GstAudioFormatInfo for @format.

 */

const GstAudioFormatInfo *

gst_audio_format_get_info (GstAudioFormat format)

{

  g_return_val_if_fail ((gint) format < G_N_ELEMENTS (formats), NULL);

  return &formats[format];

}

/**

 * gst_audio_format_fill_silence:

 * @info: a #GstAudioFormatInfo

 * @dest: (array length=length) (element-type guint8): a destination

 *   to fill

 * @length: the length to fill

 *

 * Fill @length bytes in @dest with silence samples for @info.

 */

void

gst_audio_format_fill_silence (const GstAudioFormatInfo * info,

    gpointer dest, gsize length)

{

  guint8 *dptr = dest;

  g_return_if_fail (info != NULL);

  g_return_if_fail (dest != NULL);

  if (info->flags & GST_AUDIO_FORMAT_FLAG_FLOAT ||

      info->flags & GST_AUDIO_FORMAT_FLAG_SIGNED) {

    /* float or signed always 0 */

    orc_memset (dest, 0, length);

  } else {

    gint i, j, bps = info->width >> 3;

    switch (bps) {

      case 1:

        orc_memset (dest, info->silence[0], length);

        break;

      case 2:{

#if G_BYTE_ORDER == G_LITTLE_ENDIAN

        guint16 silence = GST_READ_UINT16_LE (info->silence);

#else

        guint16 silence = GST_READ_UINT16_BE (info->silence);

#endif

        audio_orc_splat_u16 (dest, silence, length / bps);

        break;

      }

      case 4:{

#if G_BYTE_ORDER == G_LITTLE_ENDIAN

        guint32 silence = GST_READ_UINT32_LE (info->silence);

#else

        guint32 silence = GST_READ_UINT32_BE (info->silence);

#endif

        audio_orc_splat_u32 (dest, silence, length / bps);

        break;

      }

      case 8:{

#if G_BYTE_ORDER == G_LITTLE_ENDIAN

        guint64 silence = GST_READ_UINT64_LE (info->silence);

#else

        guint64 silence = GST_READ_UINT64_BE (info->silence);

#endif

        audio_orc_splat_u64 (dest, silence, length / bps);

        break;

      }

      default:

        for (i = 0; i < length; i += bps) {

          for (j = 0; j < bps; j++)

            *dptr++ = info->silence[j];

        }

        break;

    }

  }

}