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9384ba5500
Those properties are set as reference sample rate and channels number for A2DP configuration selecting.
155 lines
3.1 KiB
C
155 lines
3.1 KiB
C
/*
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* BlueALSA - bluez-a2dp.c
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* Copyright (c) 2016-2017 Arkadiusz Bokowy
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*
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* This file is a part of bluez-alsa.
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*
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* This project is licensed under the terms of the MIT license.
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*
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*/
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#include "a2dp-codecs.h"
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int a2dp_codec_select_config(const struct a2dp_codec_config configs[], size_t n,
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uint32_t cap, int preferred_value)
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{
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size_t i;
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int *scores, res;
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unsigned int max_priority;
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if (n == 0)
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return -EINVAL;
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scores = calloc(n, sizeof(int));
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if (scores == NULL)
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return -errno;
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max_priority = configs[0].priority;
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for (i = 1; i < n; ++i) {
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if (configs[i].priority > max_priority)
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max_priority = configs[i].priority;
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}
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for (i = 0; i < n; ++i) {
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if (!(configs[i].config & cap)) {
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scores[i] = -1;
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continue;
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}
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if (configs[i].value == preferred_value)
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scores[i] = 100 * (max_priority + 1);
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else if (configs[i].value > preferred_value)
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scores[i] = 10 * (max_priority + 1);
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else
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scores[i] = 1;
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scores[i] *= configs[i].priority + 1;
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}
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res = 0;
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for (i = 1; i < n; ++i) {
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if (scores[i] > scores[res])
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res = i;
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}
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if (scores[res] < 0)
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res = -EINVAL;
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free(scores);
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return res;
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}
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bool a2dp_codec_check_caps(const struct a2dp_codec *codec, unsigned int codec_id,
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const void *caps, size_t caps_size,
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const struct a2dp_codec_audio_info *info)
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{
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uint8_t config[A2DP_MAX_CAPS_SIZE];
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int res;
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if (codec_id != codec->codec_id)
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return false;
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if (caps == NULL)
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return false;
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res = codec->select_config(codec, 0, caps, caps_size, info, NULL, config);
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if (res < 0)
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return false;
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return ((size_t)res == caps_size);
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}
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#if ENABLE_MP3
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const a2dp_mpeg_t bluez_a2dp_mpeg = {
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.layer =
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MPEG_LAYER_MP1 |
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MPEG_LAYER_MP2 |
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MPEG_LAYER_MP3,
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.crc = 1,
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.channel_mode =
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MPEG_CHANNEL_MODE_MONO |
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MPEG_CHANNEL_MODE_DUAL_CHANNEL |
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MPEG_CHANNEL_MODE_STEREO |
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MPEG_CHANNEL_MODE_JOINT_STEREO,
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.mpf = 1,
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.frequency =
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MPEG_SAMPLING_FREQ_16000 |
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MPEG_SAMPLING_FREQ_22050 |
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MPEG_SAMPLING_FREQ_24000 |
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MPEG_SAMPLING_FREQ_32000 |
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MPEG_SAMPLING_FREQ_44100 |
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MPEG_SAMPLING_FREQ_48000,
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.bitrate =
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MPEG_BIT_RATE_VBR |
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MPEG_BIT_RATE_320000 |
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MPEG_BIT_RATE_256000 |
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MPEG_BIT_RATE_224000 |
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MPEG_BIT_RATE_192000 |
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MPEG_BIT_RATE_160000 |
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MPEG_BIT_RATE_128000 |
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MPEG_BIT_RATE_112000 |
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MPEG_BIT_RATE_96000 |
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MPEG_BIT_RATE_80000 |
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MPEG_BIT_RATE_64000 |
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MPEG_BIT_RATE_56000 |
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MPEG_BIT_RATE_48000 |
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MPEG_BIT_RATE_40000 |
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MPEG_BIT_RATE_32000 |
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MPEG_BIT_RATE_FREE,
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};
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#endif
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extern struct a2dp_codec a2dp_codec_sbc;
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extern struct a2dp_codec a2dp_codec_sbc_xq;
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#if ENABLE_LDAC
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extern struct a2dp_codec a2dp_codec_ldac;
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#endif
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#if ENABLE_AAC
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extern struct a2dp_codec a2dp_codec_aac;
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#endif
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#if ENABLE_MP3
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extern struct a2dp_codec a2dp_codec_mpeg;
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#endif
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#if ENABLE_APTX
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extern struct a2dp_codec a2dp_codec_aptx;
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extern struct a2dp_codec a2dp_codec_aptx_hd;
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#endif
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const struct a2dp_codec *a2dp_codec_list[] = {
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#if ENABLE_LDAC
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&a2dp_codec_ldac,
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#endif
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#if ENABLE_APTX
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&a2dp_codec_aptx_hd,
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&a2dp_codec_aptx,
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#endif
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#if ENABLE_AAC
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&a2dp_codec_aac,
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#endif
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#if ENABLE_MP3
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&a2dp_codec_mpeg,
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#endif
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&a2dp_codec_sbc_xq,
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&a2dp_codec_sbc,
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NULL,
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};
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const struct a2dp_codec **a2dp_codecs = a2dp_codec_list;
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