714 lines
20 KiB
C
714 lines
20 KiB
C
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "audio_hw_generic"
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/*#define LOG_NDEBUG 0*/
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#include <errno.h>
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#include <pthread.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <log/log.h>
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#include <cutils/str_parms.h>
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#include <hardware/hardware.h>
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#include <system/audio.h>
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#include <hardware/audio.h>
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#define AUDIO_DEVICE_NAME "/dev/eac"
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#define OUT_BUFFER_SIZE 4096
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#define OUT_LATENCY_MS 20
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#define IN_SAMPLING_RATE 8000
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#define IN_BUFFER_SIZE 320
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struct generic_audio_device {
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struct audio_hw_device device;
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pthread_mutex_t lock;
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struct audio_stream_out *output;
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struct audio_stream_in *input;
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int fd;
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bool mic_mute;
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};
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struct generic_stream_out {
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struct audio_stream_out stream;
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struct generic_audio_device *dev;
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audio_devices_t device;
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uint32_t sample_rate;
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};
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struct generic_stream_in {
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struct audio_stream_in stream;
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struct generic_audio_device *dev;
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audio_devices_t device;
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};
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static uint32_t out_get_sample_rate(const struct audio_stream *stream)
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{
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struct generic_stream_out *out = (struct generic_stream_out *)stream;
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return out->sample_rate;
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}
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static int out_set_sample_rate(struct audio_stream *stream, uint32_t rate)
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{
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return -ENOSYS;
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}
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static size_t out_get_buffer_size(const struct audio_stream *stream)
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{
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return OUT_BUFFER_SIZE;
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}
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static audio_channel_mask_t out_get_channels(const struct audio_stream *stream)
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{
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return AUDIO_CHANNEL_OUT_STEREO;
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}
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static audio_format_t out_get_format(const struct audio_stream *stream)
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{
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return AUDIO_FORMAT_PCM_16_BIT;
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}
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static int out_set_format(struct audio_stream *stream, audio_format_t format)
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{
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return -ENOSYS;
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}
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static int out_standby(struct audio_stream *stream)
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{
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// out_standby is a no op
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return 0;
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}
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static int out_dump(const struct audio_stream *stream, int fd)
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{
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struct generic_stream_out *out = (struct generic_stream_out *)stream;
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dprintf(fd, "\tout_dump:\n"
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"\t\tsample rate: %u\n"
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"\t\tbuffer size: %zu\n"
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"\t\tchannel mask: %08x\n"
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"\t\tformat: %d\n"
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"\t\tdevice: %08x\n"
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"\t\taudio dev: %p\n\n",
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out_get_sample_rate(stream),
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out_get_buffer_size(stream),
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out_get_channels(stream),
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out_get_format(stream),
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out->device,
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out->dev);
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return 0;
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}
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static int out_set_parameters(struct audio_stream *stream, const char *kvpairs)
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{
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struct generic_stream_out *out = (struct generic_stream_out *)stream;
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struct str_parms *parms;
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char value[32];
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int ret;
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long val;
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char *end;
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parms = str_parms_create_str(kvpairs);
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ret = str_parms_get_str(parms, AUDIO_PARAMETER_STREAM_ROUTING,
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value, sizeof(value));
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if (ret >= 0) {
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errno = 0;
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val = strtol(value, &end, 10);
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if (errno == 0 && (end != NULL) && (*end == '\0') && ((int)val == val)) {
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out->device = (int)val;
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} else {
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ret = -EINVAL;
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}
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}
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str_parms_destroy(parms);
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return ret;
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}
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static char * out_get_parameters(const struct audio_stream *stream, const char *keys)
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{
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struct generic_stream_out *out = (struct generic_stream_out *)stream;
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struct str_parms *query = str_parms_create_str(keys);
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char *str;
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char value[256];
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struct str_parms *reply = str_parms_create();
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int ret;
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ret = str_parms_get_str(query, AUDIO_PARAMETER_STREAM_ROUTING, value, sizeof(value));
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if (ret >= 0) {
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str_parms_add_int(reply, AUDIO_PARAMETER_STREAM_ROUTING, out->device);
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str = strdup(str_parms_to_str(reply));
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} else {
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str = strdup(keys);
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}
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str_parms_destroy(query);
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str_parms_destroy(reply);
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return str;
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}
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static uint32_t out_get_latency(const struct audio_stream_out *stream)
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{
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return OUT_LATENCY_MS;
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}
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static int out_set_volume(struct audio_stream_out *stream, float left,
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float right)
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{
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return -ENOSYS;
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}
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static ssize_t out_write(struct audio_stream_out *stream, const void* buffer,
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size_t bytes)
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{
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struct generic_stream_out *out = (struct generic_stream_out *)stream;
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struct generic_audio_device *adev = out->dev;
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pthread_mutex_lock(&adev->lock);
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if (adev->fd >= 0)
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bytes = write(adev->fd, buffer, bytes);
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pthread_mutex_unlock(&adev->lock);
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return bytes;
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}
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static int out_get_render_position(const struct audio_stream_out *stream,
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uint32_t *dsp_frames)
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{
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return -ENOSYS;
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}
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static int out_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
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{
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// out_add_audio_effect is a no op
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return 0;
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}
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static int out_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
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{
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// out_remove_audio_effect is a no op
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return 0;
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}
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static int out_get_next_write_timestamp(const struct audio_stream_out *stream,
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int64_t *timestamp)
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{
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return -ENOSYS;
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}
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/** audio_stream_in implementation **/
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static uint32_t in_get_sample_rate(const struct audio_stream *stream)
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{
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return IN_SAMPLING_RATE;
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}
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static int in_set_sample_rate(struct audio_stream *stream, uint32_t rate)
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{
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return -ENOSYS;
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}
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static size_t in_get_buffer_size(const struct audio_stream *stream)
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{
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return IN_BUFFER_SIZE;
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}
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static audio_channel_mask_t in_get_channels(const struct audio_stream *stream)
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{
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return AUDIO_CHANNEL_IN_MONO;
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}
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static audio_format_t in_get_format(const struct audio_stream *stream)
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{
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return AUDIO_FORMAT_PCM_16_BIT;
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}
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static int in_set_format(struct audio_stream *stream, audio_format_t format)
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{
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return -ENOSYS;
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}
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static int in_standby(struct audio_stream *stream)
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{
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// in_standby is a no op
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return 0;
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}
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static int in_dump(const struct audio_stream *stream, int fd)
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{
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struct generic_stream_in *in = (struct generic_stream_in *)stream;
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dprintf(fd, "\tin_dump:\n"
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"\t\tsample rate: %u\n"
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"\t\tbuffer size: %zu\n"
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"\t\tchannel mask: %08x\n"
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"\t\tformat: %d\n"
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"\t\tdevice: %08x\n"
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"\t\taudio dev: %p\n\n",
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in_get_sample_rate(stream),
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in_get_buffer_size(stream),
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in_get_channels(stream),
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in_get_format(stream),
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in->device,
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in->dev);
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return 0;
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}
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static int in_set_parameters(struct audio_stream *stream, const char *kvpairs)
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{
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struct generic_stream_in *in = (struct generic_stream_in *)stream;
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struct str_parms *parms;
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char value[32];
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int ret;
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long val;
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char *end;
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parms = str_parms_create_str(kvpairs);
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ret = str_parms_get_str(parms, AUDIO_PARAMETER_STREAM_ROUTING,
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value, sizeof(value));
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if (ret >= 0) {
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errno = 0;
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val = strtol(value, &end, 10);
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if ((errno == 0) && (end != NULL) && (*end == '\0') && ((int)val == val)) {
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in->device = (int)val;
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} else {
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ret = -EINVAL;
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}
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}
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str_parms_destroy(parms);
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return ret;
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}
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static char * in_get_parameters(const struct audio_stream *stream,
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const char *keys)
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{
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struct generic_stream_in *in = (struct generic_stream_in *)stream;
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struct str_parms *query = str_parms_create_str(keys);
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char *str;
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char value[256];
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struct str_parms *reply = str_parms_create();
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int ret;
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ret = str_parms_get_str(query, AUDIO_PARAMETER_STREAM_ROUTING, value, sizeof(value));
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if (ret >= 0) {
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str_parms_add_int(reply, AUDIO_PARAMETER_STREAM_ROUTING, in->device);
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str = strdup(str_parms_to_str(reply));
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} else {
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str = strdup(keys);
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}
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str_parms_destroy(query);
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str_parms_destroy(reply);
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return str;
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}
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static int in_set_gain(struct audio_stream_in *stream, float gain)
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{
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// in_set_gain is a no op
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return 0;
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}
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static ssize_t in_read(struct audio_stream_in *stream, void* buffer,
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size_t bytes)
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{
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struct generic_stream_in *in = (struct generic_stream_in *)stream;
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struct generic_audio_device *adev = in->dev;
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pthread_mutex_lock(&adev->lock);
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if (adev->fd >= 0)
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bytes = read(adev->fd, buffer, bytes);
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if (adev->mic_mute && (bytes > 0)) {
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memset(buffer, 0, bytes);
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}
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pthread_mutex_unlock(&adev->lock);
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return bytes;
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}
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static uint32_t in_get_input_frames_lost(struct audio_stream_in *stream)
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{
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return 0;
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}
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static int in_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
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{
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// in_add_audio_effect is a no op
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return 0;
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}
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static int in_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
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{
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// in_add_audio_effect is a no op
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return 0;
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}
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static int adev_open_output_stream(struct audio_hw_device *dev,
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audio_io_handle_t handle,
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audio_devices_t devices,
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audio_output_flags_t flags,
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struct audio_config *config,
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struct audio_stream_out **stream_out,
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const char *address __unused)
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{
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struct generic_audio_device *adev = (struct generic_audio_device *)dev;
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struct generic_stream_out *out;
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static const uint32_t sample_rates [] = { 44100, 48000 };
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static const int sample_rates_count = sizeof(sample_rates)/sizeof(sample_rates[0]);
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int ret = 0;
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pthread_mutex_lock(&adev->lock);
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if (adev->output != NULL) {
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ret = -ENOSYS;
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goto error;
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}
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if ((config->format != AUDIO_FORMAT_PCM_16_BIT) ||
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(config->channel_mask != AUDIO_CHANNEL_OUT_STEREO) ) {
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ALOGE("Error opening output stream, format %d, channel_mask %04x",
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config->format, config->channel_mask);
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config->format = AUDIO_FORMAT_PCM_16_BIT;
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config->channel_mask = AUDIO_CHANNEL_OUT_STEREO;
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ret = -EINVAL;
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}
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for (int idx = 0; idx < sample_rates_count; idx++) {
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if (config->sample_rate < sample_rates[idx]) {
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config->sample_rate = sample_rates[idx];
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ALOGE("Error opening output stream, sample_rate %u", config->sample_rate);
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ret = -EINVAL;
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break;
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} else if (config->sample_rate == sample_rates[idx]) {
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break;
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} else if (idx == sample_rates_count-1) {
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// Cap it to the highest rate we support
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config->sample_rate = sample_rates[idx];
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ALOGE("Error opening output stream, sample_rate %u", config->sample_rate);
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ret = -EINVAL;
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}
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}
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if (ret != 0) goto error;
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out = (struct generic_stream_out *)calloc(1, sizeof(struct generic_stream_out));
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out->stream.common.get_sample_rate = out_get_sample_rate;
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out->stream.common.set_sample_rate = out_set_sample_rate;
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out->stream.common.get_buffer_size = out_get_buffer_size;
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out->stream.common.get_channels = out_get_channels;
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out->stream.common.get_format = out_get_format;
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out->stream.common.set_format = out_set_format;
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out->stream.common.standby = out_standby;
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out->stream.common.dump = out_dump;
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out->stream.common.set_parameters = out_set_parameters;
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out->stream.common.get_parameters = out_get_parameters;
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out->stream.common.add_audio_effect = out_add_audio_effect;
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out->stream.common.remove_audio_effect = out_remove_audio_effect;
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out->stream.get_latency = out_get_latency;
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out->stream.set_volume = out_set_volume;
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out->stream.write = out_write;
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out->stream.get_render_position = out_get_render_position;
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out->stream.get_next_write_timestamp = out_get_next_write_timestamp;
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out->sample_rate = config->sample_rate;
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out->dev = adev;
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out->device = devices;
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adev->output = (struct audio_stream_out *)out;
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*stream_out = &out->stream;
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error:
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pthread_mutex_unlock(&adev->lock);
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return ret;
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}
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static void adev_close_output_stream(struct audio_hw_device *dev,
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struct audio_stream_out *stream)
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{
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struct generic_audio_device *adev = (struct generic_audio_device *)dev;
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pthread_mutex_lock(&adev->lock);
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if (stream == adev->output) {
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free(stream);
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adev->output = NULL;
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}
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pthread_mutex_unlock(&adev->lock);
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}
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static int adev_set_parameters(struct audio_hw_device *dev, const char *kvpairs)
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{
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return 0;
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}
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static char * adev_get_parameters(const struct audio_hw_device *dev,
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const char *keys)
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{
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return strdup("");
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}
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static int adev_init_check(const struct audio_hw_device *dev)
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{
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struct generic_audio_device *adev = (struct generic_audio_device *)dev;
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if (adev->fd >= 0)
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return 0;
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return -ENODEV;
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}
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static int adev_set_voice_volume(struct audio_hw_device *dev, float volume)
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{
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// adev_set_voice_volume is a no op (simulates phones)
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return 0;
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}
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static int adev_set_master_volume(struct audio_hw_device *dev, float volume)
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{
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return -ENOSYS;
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}
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static int adev_get_master_volume(struct audio_hw_device *dev, float *volume)
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{
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return -ENOSYS;
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}
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static int adev_set_master_mute(struct audio_hw_device *dev, bool muted)
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{
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return -ENOSYS;
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}
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static int adev_get_master_mute(struct audio_hw_device *dev, bool *muted)
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{
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return -ENOSYS;
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}
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static int adev_set_mode(struct audio_hw_device *dev, audio_mode_t mode)
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{
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// adev_set_mode is a no op (simulates phones)
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return 0;
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}
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static int adev_set_mic_mute(struct audio_hw_device *dev, bool state)
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{
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struct generic_audio_device *adev = (struct generic_audio_device *)dev;
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pthread_mutex_lock(&adev->lock);
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adev->mic_mute = state;
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pthread_mutex_unlock(&adev->lock);
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return 0;
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}
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static int adev_get_mic_mute(const struct audio_hw_device *dev, bool *state)
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{
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struct generic_audio_device *adev = (struct generic_audio_device *)dev;
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pthread_mutex_lock(&adev->lock);
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*state = adev->mic_mute;
|
|
pthread_mutex_unlock(&adev->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static size_t adev_get_input_buffer_size(const struct audio_hw_device *dev,
|
|
const struct audio_config *config)
|
|
{
|
|
return IN_BUFFER_SIZE;
|
|
}
|
|
|
|
static int adev_open_input_stream(struct audio_hw_device *dev,
|
|
audio_io_handle_t handle,
|
|
audio_devices_t devices,
|
|
struct audio_config *config,
|
|
struct audio_stream_in **stream_in,
|
|
audio_input_flags_t flags __unused,
|
|
const char *address __unused,
|
|
audio_source_t source __unused)
|
|
{
|
|
struct generic_audio_device *adev = (struct generic_audio_device *)dev;
|
|
struct generic_stream_in *in;
|
|
int ret = 0;
|
|
|
|
pthread_mutex_lock(&adev->lock);
|
|
if (adev->input != NULL) {
|
|
ret = -ENOSYS;
|
|
goto error;
|
|
}
|
|
|
|
if ((config->format != AUDIO_FORMAT_PCM_16_BIT) ||
|
|
(config->channel_mask != AUDIO_CHANNEL_IN_MONO) ||
|
|
(config->sample_rate != IN_SAMPLING_RATE)) {
|
|
ALOGE("Error opening input stream format %d, channel_mask %04x, sample_rate %u",
|
|
config->format, config->channel_mask, config->sample_rate);
|
|
config->format = AUDIO_FORMAT_PCM_16_BIT;
|
|
config->channel_mask = AUDIO_CHANNEL_IN_MONO;
|
|
config->sample_rate = IN_SAMPLING_RATE;
|
|
ret = -EINVAL;
|
|
goto error;
|
|
}
|
|
|
|
in = (struct generic_stream_in *)calloc(1, sizeof(struct generic_stream_in));
|
|
|
|
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.common.add_audio_effect = in_add_audio_effect;
|
|
in->stream.common.remove_audio_effect = in_remove_audio_effect;
|
|
in->stream.set_gain = in_set_gain;
|
|
in->stream.read = in_read;
|
|
in->stream.get_input_frames_lost = in_get_input_frames_lost;
|
|
|
|
in->dev = adev;
|
|
in->device = devices;
|
|
adev->input = (struct audio_stream_in *)in;
|
|
*stream_in = &in->stream;
|
|
|
|
error:
|
|
pthread_mutex_unlock(&adev->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void adev_close_input_stream(struct audio_hw_device *dev,
|
|
struct audio_stream_in *stream)
|
|
{
|
|
struct generic_audio_device *adev = (struct generic_audio_device *)dev;
|
|
|
|
pthread_mutex_lock(&adev->lock);
|
|
if (stream == adev->input) {
|
|
free(stream);
|
|
adev->input = NULL;
|
|
}
|
|
pthread_mutex_unlock(&adev->lock);
|
|
}
|
|
|
|
static int adev_dump(const audio_hw_device_t *dev, int fd)
|
|
{
|
|
struct generic_audio_device *adev = (struct generic_audio_device *)dev;
|
|
|
|
const size_t SIZE = 256;
|
|
char buffer[SIZE];
|
|
|
|
dprintf(fd, "\nadev_dump:\n"
|
|
"\tfd: %d\n"
|
|
"\tmic_mute: %s\n"
|
|
"\toutput: %p\n"
|
|
"\tinput: %p\n\n",
|
|
adev->fd,
|
|
adev->mic_mute ? "true": "false",
|
|
adev->output,
|
|
adev->input);
|
|
|
|
if (adev->output != NULL)
|
|
out_dump((const struct audio_stream *)adev->output, fd);
|
|
if (adev->input != NULL)
|
|
in_dump((const struct audio_stream *)adev->input, fd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adev_close(hw_device_t *dev)
|
|
{
|
|
struct generic_audio_device *adev = (struct generic_audio_device *)dev;
|
|
|
|
adev_close_output_stream((struct audio_hw_device *)dev, adev->output);
|
|
adev_close_input_stream((struct audio_hw_device *)dev, adev->input);
|
|
|
|
if (adev->fd >= 0)
|
|
close(adev->fd);
|
|
|
|
free(dev);
|
|
return 0;
|
|
}
|
|
|
|
static int adev_open(const hw_module_t* module, const char* name,
|
|
hw_device_t** device)
|
|
{
|
|
struct generic_audio_device *adev;
|
|
int fd;
|
|
|
|
if (strcmp(name, AUDIO_HARDWARE_INTERFACE) != 0)
|
|
return -EINVAL;
|
|
|
|
fd = open(AUDIO_DEVICE_NAME, O_RDWR);
|
|
if (fd < 0)
|
|
return -ENOSYS;
|
|
|
|
adev = calloc(1, sizeof(struct generic_audio_device));
|
|
|
|
adev->fd = fd;
|
|
|
|
adev->device.common.tag = HARDWARE_DEVICE_TAG;
|
|
adev->device.common.version = AUDIO_DEVICE_API_VERSION_2_0;
|
|
adev->device.common.module = (struct hw_module_t *) module;
|
|
adev->device.common.close = adev_close;
|
|
|
|
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.get_master_volume = adev_get_master_volume;
|
|
adev->device.set_master_mute = adev_set_master_mute;
|
|
adev->device.get_master_mute = adev_get_master_mute;
|
|
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,
|
|
.module_api_version = AUDIO_MODULE_API_VERSION_0_1,
|
|
.hal_api_version = HARDWARE_HAL_API_VERSION,
|
|
.id = AUDIO_HARDWARE_MODULE_ID,
|
|
.name = "Generic audio HW HAL",
|
|
.author = "The Android Open Source Project",
|
|
.methods = &hal_module_methods,
|
|
},
|
|
};
|