| /* 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; |
| } |
| } |
| } |
