libhardware: add stub audio and audio_policy modules
Change-Id: Ib6c0c49dbc369b735b2ac5fb5b583de96c3e9f3e
Signed-off-by: Dima Zavin <dima@android.com>
diff --git a/modules/audio/audio_hw.c b/modules/audio/audio_hw.c
new file mode 100644
index 0000000..bb6659d
--- /dev/null
+++ b/modules/audio/audio_hw.c
@@ -0,0 +1,412 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "audio_hw_default"
+//#define LOG_NDEBUG 0
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdint.h>
+#include <sys/time.h>
+
+#include <cutils/log.h>
+
+#include <hardware/hardware.h>
+#include <hardware/audio.h>
+#include <hardware/audio_hal.h>
+
+struct stub_audio_device {
+ struct audio_hw_device device;
+};
+
+struct stub_stream_out {
+ struct audio_stream_out stream;
+};
+
+struct stub_stream_in {
+ struct audio_stream_in stream;
+};
+
+static uint32_t out_get_sample_rate(const struct audio_stream *stream)
+{
+ return 44100;
+}
+
+static int out_set_sample_rate(struct audio_stream *stream, uint32_t rate)
+{
+ return 0;
+}
+
+static size_t out_get_buffer_size(const struct audio_stream *stream)
+{
+ return 4096;
+}
+
+static uint32_t out_get_channels(const struct audio_stream *stream)
+{
+ return AUDIO_CHANNEL_OUT_STEREO;
+}
+
+static int out_get_format(const struct audio_stream *stream)
+{
+ return AUDIO_FORMAT_PCM_16_BIT;
+}
+
+static int out_set_format(struct audio_stream *stream, int format)
+{
+ return 0;
+}
+
+static int out_standby(struct audio_stream *stream)
+{
+ return 0;
+}
+
+static int out_dump(const struct audio_stream *stream, int fd)
+{
+ return 0;
+}
+
+static int out_set_parameters(struct audio_stream *stream, const char *kvpairs)
+{
+ return 0;
+}
+
+static char * out_get_parameters(const struct audio_stream *stream, const char *keys)
+{
+ return strdup("");
+}
+
+static uint32_t out_get_latency(const struct audio_stream_out *stream)
+{
+ return 0;
+}
+
+static int out_set_volume(struct audio_stream_out *stream, float left,
+ float right)
+{
+ return 0;
+}
+
+static ssize_t out_write(struct audio_stream_out *stream, const void* buffer,
+ size_t bytes)
+{
+ /* XXX: fake timing for audio output */
+ usleep(bytes * 1000000 / audio_stream_frame_size(&stream->common) /
+ out_get_sample_rate(&stream->common));
+ return bytes;
+}
+
+static int out_get_render_position(const struct audio_stream_out *stream,
+ uint32_t *dsp_frames)
+{
+ return -EINVAL;
+}
+
+/** audio_stream_in implementation **/
+static uint32_t in_get_sample_rate(const struct audio_stream *stream)
+{
+ return 8000;
+}
+
+static int in_set_sample_rate(struct audio_stream *stream, uint32_t rate)
+{
+ return 0;
+}
+
+static size_t in_get_buffer_size(const struct audio_stream *stream)
+{
+ return 320;
+}
+
+static uint32_t in_get_channels(const struct audio_stream *stream)
+{
+ return AUDIO_CHANNEL_IN_MONO;
+}
+
+static int in_get_format(const struct audio_stream *stream)
+{
+ return AUDIO_FORMAT_PCM_16_BIT;
+}
+
+static int in_set_format(struct audio_stream *stream, int format)
+{
+ return 0;
+}
+
+static int in_standby(struct audio_stream *stream)
+{
+ return 0;
+}
+
+static int in_dump(const struct audio_stream *stream, int fd)
+{
+ return 0;
+}
+
+static int in_set_parameters(struct audio_stream *stream, const char *kvpairs)
+{
+ return 0;
+}
+
+static char * in_get_parameters(const struct audio_stream *stream,
+ const char *keys)
+{
+ return strdup("");
+}
+
+static int in_set_gain(struct audio_stream_in *stream, float gain)
+{
+ return 0;
+}
+
+static ssize_t in_read(struct audio_stream_in *stream, void* buffer,
+ size_t bytes)
+{
+ /* XXX: fake timing for audio input */
+ usleep(bytes * 1000000 / audio_stream_frame_size(&stream->common) /
+ in_get_sample_rate(&stream->common));
+ return bytes;
+}
+
+static uint32_t in_get_input_frames_lost(struct audio_stream_in *stream)
+{
+ return 0;
+}
+
+
+static int adev_open_output_stream(struct audio_hw_device *dev,
+ uint32_t devices, int *format,
+ uint32_t *channels, uint32_t *sample_rate,
+ struct audio_stream_out **stream_out)
+{
+ struct stub_audio_device *ladev = (struct stub_audio_device *)dev;
+ struct stub_stream_out *out;
+ int ret;
+
+ out = (struct stub_stream_out *)calloc(1, sizeof(struct stub_stream_out));
+ if (!out)
+ return -ENOMEM;
+
+ out->stream.common.get_sample_rate = out_get_sample_rate;
+ out->stream.common.set_sample_rate = out_set_sample_rate;
+ out->stream.common.get_buffer_size = out_get_buffer_size;
+ out->stream.common.get_channels = out_get_channels;
+ out->stream.common.get_format = out_get_format;
+ out->stream.common.set_format = out_set_format;
+ out->stream.common.standby = out_standby;
+ out->stream.common.dump = out_dump;
+ out->stream.common.set_parameters = out_set_parameters;
+ out->stream.common.get_parameters = out_get_parameters;
+ out->stream.get_latency = out_get_latency;
+ out->stream.set_volume = out_set_volume;
+ out->stream.write = out_write;
+ out->stream.get_render_position = out_get_render_position;
+
+ *stream_out = &out->stream;
+ return 0;
+
+err_open:
+ free(out);
+ *stream_out = NULL;
+ return ret;
+}
+
+static void adev_close_output_stream(struct audio_hw_device *dev,
+ struct audio_stream_out *stream)
+{
+ free(stream);
+}
+
+static int adev_set_parameters(struct audio_hw_device *dev, const char *kvpairs)
+{
+ return -ENOSYS;
+}
+
+static char * adev_get_parameters(const struct audio_hw_device *dev,
+ const char *keys)
+{
+ return NULL;
+}
+
+static int adev_init_check(const struct audio_hw_device *dev)
+{
+ return 0;
+}
+
+static int adev_set_voice_volume(struct audio_hw_device *dev, float volume)
+{
+ return -ENOSYS;
+}
+
+static int adev_set_master_volume(struct audio_hw_device *dev, float volume)
+{
+ return -ENOSYS;
+}
+
+static int adev_set_mode(struct audio_hw_device *dev, int mode)
+{
+ return 0;
+}
+
+static int adev_set_mic_mute(struct audio_hw_device *dev, bool state)
+{
+ return -ENOSYS;
+}
+
+static int adev_get_mic_mute(const struct audio_hw_device *dev, bool *state)
+{
+ return -ENOSYS;
+}
+
+static size_t adev_get_input_buffer_size(const struct audio_hw_device *dev,
+ uint32_t sample_rate, int format,
+ int channel_count)
+{
+ return 320;
+}
+
+static int adev_open_input_stream(struct audio_hw_device *dev, uint32_t devices,
+ int *format, uint32_t *channels,
+ uint32_t *sample_rate,
+ audio_in_acoustics_t acoustics,
+ struct audio_stream_in **stream_in)
+{
+ struct stub_audio_device *ladev = (struct stub_audio_device *)dev;
+ struct stub_stream_in *in;
+ int ret;
+
+ in = (struct stub_stream_in *)calloc(1, sizeof(struct stub_stream_in));
+ if (!in)
+ return -ENOMEM;
+
+ in->stream.common.get_sample_rate = in_get_sample_rate;
+ in->stream.common.set_sample_rate = in_set_sample_rate;
+ in->stream.common.get_buffer_size = in_get_buffer_size;
+ in->stream.common.get_channels = in_get_channels;
+ in->stream.common.get_format = in_get_format;
+ in->stream.common.set_format = in_set_format;
+ in->stream.common.standby = in_standby;
+ in->stream.common.dump = in_dump;
+ in->stream.common.set_parameters = in_set_parameters;
+ in->stream.common.get_parameters = in_get_parameters;
+ in->stream.set_gain = in_set_gain;
+ in->stream.read = in_read;
+ in->stream.get_input_frames_lost = in_get_input_frames_lost;
+
+ *stream_in = &in->stream;
+ return 0;
+
+err_open:
+ free(in);
+ *stream_in = NULL;
+ return ret;
+}
+
+static void adev_close_input_stream(struct audio_hw_device *dev,
+ struct audio_stream_in *in)
+{
+ return;
+}
+
+static int adev_dump(const audio_hw_device_t *device, int fd)
+{
+ return 0;
+}
+
+static int adev_close(hw_device_t *device)
+{
+ free(device);
+ return 0;
+}
+
+static uint32_t adev_get_supported_devices(const struct audio_hw_device *dev)
+{
+ return (/* OUT */
+ AUDIO_DEVICE_OUT_EARPIECE |
+ AUDIO_DEVICE_OUT_SPEAKER |
+ AUDIO_DEVICE_OUT_WIRED_HEADSET |
+ AUDIO_DEVICE_OUT_WIRED_HEADPHONE |
+ AUDIO_DEVICE_OUT_AUX_DIGITAL |
+ AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET |
+ AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET |
+ AUDIO_DEVICE_OUT_ALL_SCO |
+ AUDIO_DEVICE_OUT_DEFAULT |
+ /* IN */
+ AUDIO_DEVICE_IN_COMMUNICATION |
+ AUDIO_DEVICE_IN_AMBIENT |
+ AUDIO_DEVICE_IN_BUILTIN_MIC |
+ AUDIO_DEVICE_IN_WIRED_HEADSET |
+ AUDIO_DEVICE_IN_AUX_DIGITAL |
+ AUDIO_DEVICE_IN_BACK_MIC |
+ AUDIO_DEVICE_IN_ALL_SCO |
+ AUDIO_DEVICE_IN_DEFAULT);
+}
+
+static int adev_open(const hw_module_t* module, const char* name,
+ hw_device_t** device)
+{
+ struct stub_audio_device *adev;
+ int ret;
+
+ if (strcmp(name, AUDIO_HARDWARE_INTERFACE) != 0)
+ return -EINVAL;
+
+ adev = calloc(1, sizeof(struct stub_audio_device));
+ if (!adev)
+ return -ENOMEM;
+
+ adev->device.common.tag = HARDWARE_DEVICE_TAG;
+ adev->device.common.version = 0;
+ adev->device.common.module = (struct hw_module_t *) module;
+ adev->device.common.close = adev_close;
+
+ adev->device.get_supported_devices = adev_get_supported_devices;
+ adev->device.init_check = adev_init_check;
+ adev->device.set_voice_volume = adev_set_voice_volume;
+ adev->device.set_master_volume = adev_set_master_volume;
+ adev->device.set_mode = adev_set_mode;
+ adev->device.set_mic_mute = adev_set_mic_mute;
+ adev->device.get_mic_mute = adev_get_mic_mute;
+ adev->device.set_parameters = adev_set_parameters;
+ adev->device.get_parameters = adev_get_parameters;
+ adev->device.get_input_buffer_size = adev_get_input_buffer_size;
+ adev->device.open_output_stream = adev_open_output_stream;
+ adev->device.close_output_stream = adev_close_output_stream;
+ adev->device.open_input_stream = adev_open_input_stream;
+ adev->device.close_input_stream = adev_close_input_stream;
+ adev->device.dump = adev_dump;
+
+ *device = &adev->device.common;
+
+ return 0;
+}
+
+static struct hw_module_methods_t hal_module_methods = {
+ .open = adev_open,
+};
+
+struct audio_module HAL_MODULE_INFO_SYM = {
+ .common = {
+ .tag = HARDWARE_MODULE_TAG,
+ .version_major = 1,
+ .version_minor = 0,
+ .id = AUDIO_HARDWARE_MODULE_ID,
+ .name = "Default audio HW HAL",
+ .author = "The Android Open Source Project",
+ .methods = &hal_module_methods,
+ },
+};