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Support opening bit-perfect output stream.

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When opening bit-perfect output stream, the HAL should require the HAL
configuration match the request exactly.

Bug: 262581771
Test: manually
Change-Id: I2f79d41ad42b0c662d28667bde6ae115575d41e1
This commit is contained in:
jiabin
2022-12-19 19:31:36 +00:00
parent ab70546cab
commit 662fe4aeda
1 changed files with 46 additions and 8 deletions
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54
modules/usbaudio/audio_hal.c
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@@ -120,6 +120,8 @@ struct stream_out {
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;
@@ -599,7 +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);
@@ -616,7 +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]);
@@ -926,6 +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));
@@ -980,9 +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 */
@@ -999,9 +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;
}
}
@@ -1039,7 +1062,17 @@ 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);
@@ -1543,7 +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;
@@ -1710,6 +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];
@@ -1750,6 +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.
@@ -1798,12 +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;
}