diff options
author | Treehugger Robot <treehugger-gerrit@google.com> | 2023-02-03 21:45:46 +0000 |
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committer | Gerrit Code Review <noreply-gerritcodereview@google.com> | 2023-02-03 21:45:46 +0000 |
commit | 593156f5e9a4a7eed8021343201d81ded823ed22 (patch) | |
tree | 04a9a29e59a25ba86a52578fabe78e92590cd20e | |
parent | 4ca44e76151d9189bdd2c3d1ce83745d9e4f0a77 (diff) | |
parent | fea9e1be0a6c1d34c860e0b19198a85e6c234b3d (diff) | |
download | libhardware-593156f5e9a4a7eed8021343201d81ded823ed22.tar.gz |
Merge changes from topic "aospUsbHal-bitPerfect"
* changes:
Support opening bit-perfect output stream.
Add volume control for AOSP USB audio HAL.
-rw-r--r-- | modules/usbaudio/audio_hal.c | 150 |
1 files changed, 141 insertions, 9 deletions
diff --git a/modules/usbaudio/audio_hal.c b/modules/usbaudio/audio_hal.c index fe921d69..1bd53c27 100644 --- a/modules/usbaudio/audio_hal.c +++ b/modules/usbaudio/audio_hal.c @@ -19,6 +19,7 @@ #include <errno.h> #include <inttypes.h> +#include <math.h> #include <pthread.h> #include <stdint.h> #include <stdlib.h> @@ -118,6 +119,15 @@ struct stream_out { audio_io_handle_t handle; // Unique constant for a stream audio_patch_handle_t patch_handle; // Patch handle for this stream + + bool is_bit_perfect; // True if the stream is open with bit-perfect output flag + + // Mixer information used for volume handling + struct mixer* mixer; + struct mixer_ctl* volume_ctl; + int volume_ctl_num_values; + int max_volume_level; + int min_volume_level; }; struct stream_in { @@ -223,6 +233,14 @@ static const audio_channel_mask_t CHANNEL_INDEX_MASKS_MAP[FCC_24 + 1] = { }; static const int CHANNEL_INDEX_MASKS_SIZE = AUDIO_ARRAY_SIZE(CHANNEL_INDEX_MASKS_MAP); +static const char* ALL_VOLUME_CONTROL_NAMES[] = { + "PCM Playback Volume", + "Headset Playback Volume", + "Headphone Playback Volume", + "Master Playback Volume", +}; +static const int VOLUME_CONTROL_NAMES_NUM = AUDIO_ARRAY_SIZE(ALL_VOLUME_CONTROL_NAMES); + /* * Locking Helpers */ @@ -495,6 +513,45 @@ static bool are_devices_the_same(unsigned int left_num_devices, left_num_devices, left_cards, left_devices); } +static void out_stream_find_mixer_volume_control(struct stream_out* out, int card) { + out->mixer = mixer_open(card); + if (out->mixer == NULL) { + ALOGI("%s, no mixer found for card=%d", __func__, card); + return; + } + unsigned int num_ctls = mixer_get_num_ctls(out->mixer); + for (int i = 0; i < VOLUME_CONTROL_NAMES_NUM; ++i) { + for (unsigned int j = 0; j < num_ctls; ++j) { + struct mixer_ctl *ctl = mixer_get_ctl(out->mixer, j); + enum mixer_ctl_type ctl_type = mixer_ctl_get_type(ctl); + if (strcasestr(mixer_ctl_get_name(ctl), ALL_VOLUME_CONTROL_NAMES[i]) == NULL || + ctl_type != MIXER_CTL_TYPE_INT) { + continue; + } + ALOGD("%s, mixer volume control(%s) found", __func__, ALL_VOLUME_CONTROL_NAMES[i]); + out->volume_ctl_num_values = mixer_ctl_get_num_values(ctl); + if (out->volume_ctl_num_values <= 0) { + ALOGE("%s the num(%d) of volume ctl values is wrong", + __func__, out->volume_ctl_num_values); + out->volume_ctl_num_values = 0; + continue; + } + out->max_volume_level = mixer_ctl_get_range_max(ctl); + out->min_volume_level = mixer_ctl_get_range_min(ctl); + if (out->max_volume_level < out->min_volume_level) { + ALOGE("%s the max volume level(%d) is less than min volume level(%d)", + __func__, out->max_volume_level, out->min_volume_level); + out->max_volume_level = 0; + out->min_volume_level = 0; + continue; + } + out->volume_ctl = ctl; + return; + } + } + ALOGI("%s, no volume control found", __func__); +} + /* * HAl Functions */ @@ -544,7 +601,8 @@ static int stream_set_new_devices(struct pcm_config *config, unsigned int num_devices, const int cards[], const int devices[], - int direction) + int direction, + bool is_bit_perfect) { int status = 0; stream_clear_devices(alsa_devices); @@ -561,7 +619,7 @@ static int stream_set_new_devices(struct pcm_config *config, __func__, cards[i], devices[i]); goto exit; } - status = proxy_prepare(&device_info->proxy, &device_info->profile, config); + status = proxy_prepare(&device_info->proxy, &device_info->profile, config, is_bit_perfect); if (status != 0) { ALOGE("%s failed to prepare device card=%d;device=%d", __func__, cards[i], devices[i]); @@ -709,7 +767,31 @@ static uint32_t out_get_latency(const struct audio_stream_out *stream) static int out_set_volume(struct audio_stream_out *stream, float left, float right) { - return -ENOSYS; + struct stream_out *out = (struct stream_out *)stream; + int result = -ENOSYS; + stream_lock(&out->lock); + if (out->volume_ctl != NULL) { + int left_volume = + out->min_volume_level + ceil((out->max_volume_level - out->min_volume_level) * left); + int right_volume = + out->min_volume_level + ceil((out->max_volume_level - out->min_volume_level) * right); + int volumes[out->volume_ctl_num_values]; + if (out->volume_ctl_num_values == 1) { + volumes[0] = left_volume; + } else { + volumes[0] = left_volume; + volumes[1] = right_volume; + for (int i = 2; i < out->volume_ctl_num_values; ++i) { + volumes[i] = left_volume; + } + } + result = mixer_ctl_set_array(out->volume_ctl, volumes, out->volume_ctl_num_values); + if (result != 0) { + ALOGE("%s error=%d left=%f right=%f", __func__, result, left, right); + } + } + stream_unlock(&out->lock); + return result; } /* must be called with hw device and output stream mutexes locked */ @@ -847,6 +929,16 @@ static int adev_open_output_stream(struct audio_hw_device *hw_dev, ALOGV("adev_open_output_stream() handle:0x%X, devicesSpec:0x%X, flags:0x%X, addr:%s", handle, devicesSpec, flags, address); + const bool is_bit_perfect = ((flags & AUDIO_OUTPUT_FLAG_BIT_PERFECT) != AUDIO_OUTPUT_FLAG_NONE); + if (is_bit_perfect && (config->format == AUDIO_FORMAT_DEFAULT || + config->sample_rate == 0 || + config->channel_mask == AUDIO_CHANNEL_NONE)) { + ALOGE("%s request bit perfect playback, config(format=%#x, sample_rate=%u, " + "channel_mask=%#x) must be specified", __func__, config->format, + config->sample_rate, config->channel_mask); + return -EINVAL; + } + struct stream_out *out; out = (struct stream_out *)calloc(1, sizeof(struct stream_out)); @@ -901,9 +993,14 @@ static int adev_open_output_stream(struct audio_hw_device *hw_dev, } else if (profile_is_sample_rate_valid(&device_info->profile, config->sample_rate)) { proxy_config.rate = config->sample_rate; } else { + ret = -EINVAL; + if (is_bit_perfect) { + ALOGE("%s requesting bit-perfect but the sample rate(%u) is not valid", + __func__, config->sample_rate); + return ret; + } proxy_config.rate = config->sample_rate = profile_get_default_sample_rate(&device_info->profile); - ret = -EINVAL; } /* TODO: This is a problem if the input does not support this rate */ @@ -920,9 +1017,14 @@ static int adev_open_output_stream(struct audio_hw_device *hw_dev, if (profile_is_format_valid(&device_info->profile, fmt)) { proxy_config.format = fmt; } else { + ret = -EINVAL; + if (is_bit_perfect) { + ALOGE("%s request bit-perfect but the format(%#x) is not valid", + __func__, config->format); + return ret; + } proxy_config.format = profile_get_default_format(&device_info->profile); config->format = audio_format_from_pcm_format(proxy_config.format); - ret = -EINVAL; } } @@ -960,11 +1062,25 @@ static int adev_open_output_stream(struct audio_hw_device *hw_dev, // and store THAT in proxy_config.channels proxy_config.channels = profile_get_closest_channel_count(&device_info->profile, out->hal_channel_count); - proxy_prepare(&device_info->proxy, &device_info->profile, &proxy_config); + if (is_bit_perfect && proxy_config.channels != out->hal_channel_count) { + ALOGE("%s request bit-perfect, but channel mask(%#x) cannot find exact match", + __func__, config->channel_mask); + return -EINVAL; + } + + ret = proxy_prepare(&device_info->proxy, &device_info->profile, &proxy_config, is_bit_perfect); + if (is_bit_perfect && ret != 0) { + ALOGE("%s failed to prepare proxy for bit-perfect playback, err=%d", __func__, ret); + return ret; + } out->config = proxy_config; list_add_tail(&out->alsa_devices, &device_info->list_node); + if ((flags & AUDIO_OUTPUT_FLAG_BIT_PERFECT) != AUDIO_OUTPUT_FLAG_NONE) { + out_stream_find_mixer_volume_control(out, device_info->profile.card); + } + /* TODO The retry mechanism isn't implemented in AudioPolicyManager/AudioFlinger * So clear any errors that may have occurred above. */ @@ -998,6 +1114,17 @@ static void adev_close_output_stream(struct audio_hw_device *hw_dev, out->conversion_buffer = NULL; out->conversion_buffer_size = 0; + if (out->volume_ctl != NULL) { + for (int i = 0; i < out->volume_ctl_num_values; ++i) { + mixer_ctl_set_value(out->volume_ctl, i, out->max_volume_level); + } + out->volume_ctl = NULL; + } + if (out->mixer != NULL) { + mixer_close(out->mixer); + out->mixer = NULL; + } + device_lock(out->adev); list_remove(&out->list_node); out->adev->device_sample_rate = 0; @@ -1449,7 +1576,8 @@ static int adev_open_input_stream(struct audio_hw_device *hw_dev, // and store THAT in proxy_config.channels in->config.channels = profile_get_closest_channel_count(&device_info->profile, in->hal_channel_count); - ret = proxy_prepare(&device_info->proxy, &device_info->profile, &in->config); + ret = proxy_prepare(&device_info->proxy, &device_info->profile, &in->config, + false /*require_exact_match*/); if (ret == 0) { in->standby = true; @@ -1616,6 +1744,7 @@ static int adev_create_audio_patch(struct audio_hw_device *dev, struct pcm_config *config = NULL; struct stream_in *in = NULL; struct stream_out *out = NULL; + bool is_bit_perfect = false; unsigned int num_saved_devices = 0; int saved_cards[AUDIO_PATCH_PORTS_MAX]; @@ -1656,6 +1785,7 @@ static int adev_create_audio_patch(struct audio_hw_device *dev, alsa_devices = &out->alsa_devices; lock = &out->lock; config = &out->config; + is_bit_perfect = out->is_bit_perfect; } // Check if the patch handle match the recorded one if a valid patch handle is passed. @@ -1704,12 +1834,14 @@ static int adev_create_audio_patch(struct audio_hw_device *dev, struct alsa_device_info *device_info = stream_get_first_alsa_device(alsa_devices); if (device_info != NULL) saved_transferred_frames = device_info->proxy.transferred; - int ret = stream_set_new_devices(config, alsa_devices, num_configs, cards, devices, direction); + int ret = stream_set_new_devices( + config, alsa_devices, num_configs, cards, devices, direction, is_bit_perfect); if (ret != 0) { *handle = generatedPatchHandle ? AUDIO_PATCH_HANDLE_NONE : *handle; stream_set_new_devices( - config, alsa_devices, num_saved_devices, saved_cards, saved_devices, direction); + config, alsa_devices, num_saved_devices, saved_cards, saved_devices, direction, + is_bit_perfect); } else { *patch_handle = *handle; } |