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pipewire/spa/lib/audio-raw.c
Wim Taymans bd7009756c alsa: aad alsa source and monitor
2016-09-19 09:16:58 +02:00

306 lines
11 KiB
C
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/* Simple Plugin API
* Copyright (C) 2016 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.
*/
#include <stdint.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <spa/audio/raw.h>
#include <spa/audio/format.h>
static const uint32_t format_values[] = {
SPA_AUDIO_FORMAT_S8,
SPA_AUDIO_FORMAT_U8,
/* 16 bit */
SPA_AUDIO_FORMAT_S16LE,
SPA_AUDIO_FORMAT_S16BE,
SPA_AUDIO_FORMAT_U16LE,
SPA_AUDIO_FORMAT_U16BE,
/* 24 bit in low 3 bytes of 32 bits*/
SPA_AUDIO_FORMAT_S24_32LE,
SPA_AUDIO_FORMAT_S24_32BE,
SPA_AUDIO_FORMAT_U24_32LE,
SPA_AUDIO_FORMAT_U24_32BE,
/* 32 bit */
SPA_AUDIO_FORMAT_S32LE,
SPA_AUDIO_FORMAT_S32BE,
SPA_AUDIO_FORMAT_U32LE,
SPA_AUDIO_FORMAT_U32BE,
/* 24 bit in 3 bytes*/
SPA_AUDIO_FORMAT_S24LE,
SPA_AUDIO_FORMAT_S24BE,
SPA_AUDIO_FORMAT_U24LE,
SPA_AUDIO_FORMAT_U24BE,
/* 20 bit in 3 bytes*/
SPA_AUDIO_FORMAT_S20LE,
SPA_AUDIO_FORMAT_S20BE,
SPA_AUDIO_FORMAT_U20LE,
SPA_AUDIO_FORMAT_U20BE,
/* 18 bit in 3 bytes*/
SPA_AUDIO_FORMAT_S18LE,
SPA_AUDIO_FORMAT_S18BE,
SPA_AUDIO_FORMAT_U18LE,
SPA_AUDIO_FORMAT_U18BE,
/* float */
SPA_AUDIO_FORMAT_F32LE,
SPA_AUDIO_FORMAT_F32BE,
SPA_AUDIO_FORMAT_F64LE,
SPA_AUDIO_FORMAT_F64BE
};
static const SpaPropRangeInfo format_format_range[] = {
{ "S8", "S8", { sizeof (uint32_t), &format_values[0] } },
{ "U8", "U8", { sizeof (uint32_t), &format_values[1] } },
{ "S16LE", "S16LE", { sizeof (uint32_t), &format_values[2] } },
{ "S16BE", "S16BE", { sizeof (uint32_t), &format_values[3] } },
{ "U16LE", "U16LE", { sizeof (uint32_t), &format_values[4] } },
{ "U16BE", "U16BE", { sizeof (uint32_t), &format_values[5] } },
{ "S24_32LE", "S24_32LE", { sizeof (uint32_t), &format_values[6] } },
{ "S24_32BE", "S24_32BE", { sizeof (uint32_t), &format_values[7] } },
{ "U24_32LE", "U24_32LE", { sizeof (uint32_t), &format_values[8] } },
{ "U24_32BE", "U24_32BE", { sizeof (uint32_t), &format_values[9] } },
{ "S32LE", "S32LE", { sizeof (uint32_t), &format_values[10] } },
{ "S32BE", "S32BE", { sizeof (uint32_t), &format_values[11] } },
{ "U32LE", "U32LE", { sizeof (uint32_t), &format_values[12] } },
{ "U32BE", "U32BE", { sizeof (uint32_t), &format_values[13] } },
{ "S24LE", "S24LE", { sizeof (uint32_t), &format_values[14] } },
{ "S24BE", "S24BE", { sizeof (uint32_t), &format_values[15] } },
{ "U24LE", "U24LE", { sizeof (uint32_t), &format_values[16] } },
{ "U24BE", "U24BE", { sizeof (uint32_t), &format_values[17] } },
{ "S20LE", "S20LE", { sizeof (uint32_t), &format_values[18] } },
{ "S20BE", "S20BE", { sizeof (uint32_t), &format_values[19] } },
{ "U20LE", "U20LE", { sizeof (uint32_t), &format_values[20] } },
{ "U20BE", "U20BE", { sizeof (uint32_t), &format_values[21] } },
{ "S18LE", "S18LE", { sizeof (uint32_t), &format_values[22] } },
{ "S18BE", "S18BE", { sizeof (uint32_t), &format_values[23] } },
{ "U18LE", "U18LE", { sizeof (uint32_t), &format_values[24] } },
{ "U18BE", "U18BE", { sizeof (uint32_t), &format_values[25] } },
{ "F32LE", "F32LE", { sizeof (uint32_t), &format_values[26] } },
{ "F32BE", "F32BE", { sizeof (uint32_t), &format_values[27] } },
{ "F64LE", "F64LE", { sizeof (uint32_t), &format_values[28] } },
{ "F64BE", "F64BE", { sizeof (uint32_t), &format_values[29] } },
};
static const uint32_t format_layouts[] = {
SPA_AUDIO_LAYOUT_INTERLEAVED,
SPA_AUDIO_LAYOUT_NON_INTERLEAVED,
};
static const SpaPropRangeInfo layouts_range[] = {
{ "interleaved", "Interleaved samples", { sizeof (uint32_t), &format_layouts[0] } },
{ "non-interleaved", "Non-interleaved samples", { sizeof (uint32_t), &format_layouts[1] } },
};
static const uint32_t format_flags[] = {
SPA_AUDIO_FLAG_NONE,
SPA_AUDIO_FLAG_UNPOSITIONED,
};
static const SpaPropRangeInfo flags_range[] = {
{ "none", "No flags", { sizeof (uint32_t), &format_flags[0] } },
{ "unpositioned", "Unpositioned channels", { sizeof (uint32_t), &format_flags[1] } },
};
static const uint32_t min_uint32 = 1;
static const uint32_t max_uint32 = UINT32_MAX;
static const SpaPropRangeInfo uint32_range[] = {
{ "min", "Minimum value", { sizeof (uint32_t), &min_uint32 } },
{ "max", "Maximum value", { sizeof (uint32_t), &max_uint32 } },
};
static const SpaPropInfo format_prop_info[] =
{
{ SPA_PROP_ID_AUDIO_INFO, 0,
"info", "the SpaAudioInfo structure",
SPA_PROP_FLAG_READWRITE | SPA_PROP_FLAG_OPTIONAL | SPA_PROP_FLAG_INFO,
SPA_PROP_TYPE_POINTER, sizeof (SpaAudioInfoRaw),
SPA_PROP_RANGE_TYPE_NONE, 0, NULL,
NULL },
{ SPA_PROP_ID_AUDIO_FORMAT, 0,
"format", "The media format",
SPA_PROP_FLAG_READWRITE,
SPA_PROP_TYPE_UINT32, sizeof (uint32_t),
SPA_PROP_RANGE_TYPE_ENUM, SPA_N_ELEMENTS (format_format_range), format_format_range,
NULL },
{ SPA_PROP_ID_AUDIO_FLAGS, 0,
"flags", "Sample Flags",
SPA_PROP_FLAG_READWRITE,
SPA_PROP_TYPE_UINT32, sizeof (uint32_t),
SPA_PROP_RANGE_TYPE_FLAGS, SPA_N_ELEMENTS (flags_range), flags_range,
NULL },
{ SPA_PROP_ID_AUDIO_LAYOUT, 0,
"layout", "Sample Layout",
SPA_PROP_FLAG_READWRITE,
SPA_PROP_TYPE_UINT32, sizeof (uint32_t),
SPA_PROP_RANGE_TYPE_ENUM, SPA_N_ELEMENTS (layouts_range), layouts_range,
NULL },
{ SPA_PROP_ID_AUDIO_RATE, 0,
"rate", "Audio sample rate",
SPA_PROP_FLAG_READWRITE,
SPA_PROP_TYPE_UINT32, sizeof (uint32_t),
SPA_PROP_RANGE_TYPE_MIN_MAX, 2, uint32_range,
NULL },
{ SPA_PROP_ID_AUDIO_CHANNELS, 0,
"channels", "Audio channels",
SPA_PROP_FLAG_READWRITE,
SPA_PROP_TYPE_UINT32, sizeof (uint32_t),
SPA_PROP_RANGE_TYPE_MIN_MAX, 2, uint32_range,
NULL },
{ SPA_PROP_ID_AUDIO_CHANNEL_MASK, 0,
"channel-mask", "Audio channel mask",
SPA_PROP_FLAG_READWRITE,
SPA_PROP_TYPE_BITMASK, sizeof (uint32_t),
SPA_PROP_RANGE_TYPE_NONE, 0, NULL,
NULL },
};
SpaResult
spa_prop_info_fill_audio (SpaPropInfo *info,
SpaPropIdAudio id,
size_t offset)
{
int i;
if (info == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
i = id - SPA_PROP_ID_MEDIA_CUSTOM_START;
if (i < 0 || i >= SPA_N_ELEMENTS (format_prop_info))
return SPA_RESULT_INVALID_PROPERTY_INDEX;
memcpy (info, &format_prop_info[i], sizeof (SpaPropInfo));
info->offset = offset;
return SPA_RESULT_OK;
}
SpaResult
spa_format_audio_init (SpaMediaType type,
SpaMediaSubType subtype,
SpaFormatAudio *format)
{
SpaPropInfo *prop_info = NULL;
unsigned int n_prop_info = 0;
int i;
if (type != SPA_MEDIA_TYPE_AUDIO)
return SPA_RESULT_INVALID_ARGUMENTS;
switch (subtype) {
case SPA_MEDIA_SUBTYPE_RAW:
{
static SpaPropInfo raw_format_prop_info[] =
{
{ SPA_PROP_ID_AUDIO_INFO, offsetof (SpaFormatAudio, info), },
{ SPA_PROP_ID_AUDIO_FORMAT, offsetof (SpaFormatAudio, info.raw.format), },
{ SPA_PROP_ID_AUDIO_FLAGS, offsetof (SpaFormatAudio, info.raw.flags), },
{ SPA_PROP_ID_AUDIO_LAYOUT, offsetof (SpaFormatAudio, info.raw.layout), },
{ SPA_PROP_ID_AUDIO_RATE, offsetof (SpaFormatAudio, info.raw.rate), },
{ SPA_PROP_ID_AUDIO_CHANNELS, offsetof (SpaFormatAudio, info.raw.channels), },
{ SPA_PROP_ID_AUDIO_CHANNEL_MASK, offsetof (SpaFormatAudio, info.raw.channel_mask), },
};
static const SpaAudioInfoRaw default_raw_info = {
SPA_AUDIO_FORMAT_S16,
SPA_AUDIO_FLAG_NONE,
SPA_AUDIO_LAYOUT_INTERLEAVED,
32000,
2,
0
};
prop_info = raw_format_prop_info;
n_prop_info = SPA_N_ELEMENTS (raw_format_prop_info);
format->format.props.unset_mask = (1 << 1) | (1 << 3) | (1 << 4) | (1 << 5);
format->info.raw = default_raw_info;
break;
}
case SPA_MEDIA_SUBTYPE_MP3:
case SPA_MEDIA_SUBTYPE_AAC:
case SPA_MEDIA_SUBTYPE_VORBIS:
case SPA_MEDIA_SUBTYPE_WMA:
case SPA_MEDIA_SUBTYPE_RA:
case SPA_MEDIA_SUBTYPE_SBC:
case SPA_MEDIA_SUBTYPE_ADPCM:
case SPA_MEDIA_SUBTYPE_G723:
case SPA_MEDIA_SUBTYPE_G726:
case SPA_MEDIA_SUBTYPE_G729:
case SPA_MEDIA_SUBTYPE_AMR:
case SPA_MEDIA_SUBTYPE_GSM:
break;
default:
return SPA_RESULT_INVALID_ARGUMENTS;
}
if (prop_info && prop_info[0].name == NULL) {
for (i = 0; i < n_prop_info; i++)
spa_prop_info_fill_audio (&prop_info[i],
prop_info[i].id,
prop_info[i].offset);
}
format->format.media_type = type;
format->format.media_subtype = subtype;
format->format.props.n_prop_info = n_prop_info;
format->format.props.prop_info = prop_info;
return SPA_RESULT_OK;
}
SpaResult
spa_format_audio_parse (const SpaFormat *format,
SpaFormatAudio *aformat)
{
SpaPropValue value;
const SpaProps *props;
SpaResult res;
unsigned int idx;
if ((void *)format == (void *)aformat)
return SPA_RESULT_OK;
if (format->media_type != SPA_MEDIA_TYPE_AUDIO)
return SPA_RESULT_INVALID_MEDIA_TYPE;
if ((res = spa_format_audio_init (format->media_type,
format->media_subtype,
aformat)) < 0)
return res;
props = &format->props;
idx = spa_props_index_for_id (props, SPA_PROP_ID_AUDIO_INFO);
if ((res = spa_props_get_prop (props, idx, &value)) < 0)
goto fallback;
if (props->prop_info[idx].type != SPA_PROP_TYPE_POINTER)
goto fallback;
memcpy (&aformat->info, value.value, SPA_MIN (value.size, sizeof (aformat->info)));
aformat->format.props.unset_mask = props->unset_mask;
return SPA_RESULT_OK;
fallback:
res = spa_props_copy (props, &aformat->format.props);
return res;
}
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