--- /dev/null
+/*
+ * Copyright (C) 2012 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/
+ * Copyright (C) 2012 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.
+ */
+
+/*
+ * This code has modified by Intel Corporation
+ */
+
+/*
+ * Copyright (c) 2014, Intel Corporation
+ *
+ * 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
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define LOG_TAG "tiny_hdmi_audio_hw"
+//#define LOG_NDEBUG 0
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdint.h>
+#include <sys/time.h>
+#include <stdlib.h>
+
+#include <cutils/log.h>
+#include <cutils/str_parms.h>
+#include <cutils/properties.h>
+
+#include <hardware/hardware.h>
+#include <system/audio.h>
+#include <hardware/audio.h>
+
+#include <sound/asound.h>
+#include <tinyalsa/asoundlib.h>
+
+#define UNUSED_PARAMETER(x) (void)(x)
+
+#define DEFAULT_CARD 0
+#define DEFAULT_DEVICE 0
+
+/*this is used to avoid starvation*/
+#define LATENCY_TO_BUFFER_SIZE_RATIO 2
+
+/*Playback Channel Map*/
+#define CHANNEL_MAP_REQUEST 2
+
+/*global - keep track of the active device.
+This is needed since we are supporting more
+than one profile for HDMI. The Flinger
+assumes we can suport multiple streams
+at the same time. This makes sure only one stream
+is active at a time.*/
+struct pcm * activePcm = NULL;
+/*TODO - move active channel inside activepcm*/
+static unsigned int activeChannel;
+
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
+
+#define STRING_TO_ENUM(string) { #string, string }
+
+struct channel_list {
+ const char *name;
+ uint32_t value;
+};
+
+const struct channel_list channel_list_table[] = {
+ STRING_TO_ENUM(AUDIO_CHANNEL_OUT_STEREO),
+ STRING_TO_ENUM(AUDIO_CHANNEL_OUT_5POINT1),
+ STRING_TO_ENUM(AUDIO_CHANNEL_OUT_7POINT1),
+};
+
+struct pcm_config pcm_config_default = {
+ .channels = 2,
+ .rate = 44100,
+ .period_size = 1024,
+ .period_count = 4,
+ .format = PCM_FORMAT_S24_LE,
+};
+
+#define CHANNEL_MASK_MAX 3
+struct audio_device {
+ struct audio_hw_device hw_device;
+
+ pthread_mutex_t lock;
+ int card;
+ int device;
+ bool standby;
+ int sink_sup_channels;
+ audio_channel_mask_t sup_channel_masks[CHANNEL_MASK_MAX];
+};
+
+struct stream_out {
+ struct audio_stream_out stream;
+
+ pthread_mutex_t lock;
+ struct pcm *pcm;
+ bool standby;
+
+/* PCM Stream Configurations */
+ struct pcm_config pcm_config;
+ uint32_t channel_mask;
+
+ /* ALSA PCM Configurations */
+ uint32_t sample_rate;
+ uint32_t buffer_size;
+ uint32_t channels;
+ uint32_t latency;
+
+ struct audio_device *dev;
+};
+
+/**
+ * NOTE: when multiple mutexes have to be acquired, always respect the
+ * following order: hw device > out stream
+ */
+
+/* Helper functions */
+
+// This function return the card number associated with the card ID (name)
+// passed as argument
+static int get_card_number_by_name(const char* name)
+{
+ char id_filepath[PATH_MAX] = {0};
+ char number_filepath[PATH_MAX] = {0};
+ ssize_t written;
+
+ snprintf(id_filepath, sizeof(id_filepath), "/proc/asound/%s", name);
+
+ written = readlink(id_filepath, number_filepath, sizeof(number_filepath));
+ if (written < 0) {
+ ALOGE("Sound card %s does not exist - setting default", name);
+ return DEFAULT_CARD;
+ } else if (written >= (ssize_t)sizeof(id_filepath)) {
+ ALOGE("Sound card %s name is too long - setting default", name);
+ return DEFAULT_CARD;
+ }
+
+ // We are assured, because of the check in the previous elseif, that this
+ // buffer is null-terminated. So this call is safe.
+ // 4 == strlen("card")
+ return atoi(number_filepath + 4);
+}
+
+static enum pcm_format Get_SinkSupported_format()
+{
+ /*TODO : query sink supported formats*/
+ return PCM_FORMAT_S24_LE;
+}
+
+static int format_to_bits(enum pcm_format pcmformat)
+{
+ switch (pcmformat) {
+ case PCM_FORMAT_S32_LE:
+ return 32;
+ case PCM_FORMAT_S24_LE:
+ return 24;
+ default:
+ case PCM_FORMAT_S16_LE:
+ return 16;
+ };
+}
+
+static int make_sinkcompliant_buffers(void* input, void *output, int ipbytes)
+{
+ int i = 0,outbytes = 0;
+ enum pcm_format in_pcmformat;
+ enum pcm_format out_pcmformat;
+ int *src = (int*)input;
+ int *dst = (int*)output;
+
+ /*by default android currently support only
+ 16 bit signed PCM*/
+ in_pcmformat = PCM_FORMAT_S16_LE;
+ out_pcmformat = Get_SinkSupported_format();
+
+ switch (out_pcmformat) {
+ default:
+ case PCM_FORMAT_S24_LE:
+ {
+ ALOGV("convert 16 to 24 bits for %d",ipbytes);
+ /*convert 16 bit input to 24 bit output
+ in a 32 bit sample*/
+ if(0 == ipbytes)
+ break;
+
+ for(i = 0; i < (ipbytes/4); i++){
+ int x = (int)((int*)src)[i];
+ dst[i*2] = ((int)( x & 0x0000FFFF)) << 8;
+ // trying to sign exdent
+ dst[i*2] = dst[i*2] << 8;
+ dst[i*2] = dst[i*2] >> 8;
+ //shift to middle
+ dst[i*2 + 1] = (int)(( x & 0xFFFF0000) >> 8);
+ dst[i*2 + 1] = dst[i*2 + 1] << 8;
+ dst[i*2 + 1] = dst[i*2 + 1] >> 8;
+ }
+ outbytes=ipbytes * 2;
+
+ }//case
+ };//switch
+
+ return outbytes;
+}
+
+/* must be called with hw device and output stream mutexes locked */
+static int start_output_stream(struct stream_out *out)
+{
+ struct audio_device *adev = out->dev;
+ int hdmicard = 0;
+
+ ALOGV("%s enter",__func__);
+
+ if ((adev->card < 0) || (adev->device < 0)){
+ /*this will be updated once the hot plug intent
+ sends these information.*/
+ adev->card = DEFAULT_CARD;
+ adev->device = DEFAULT_DEVICE;
+ ALOGV("%s : Setting default card/ device %d,%d",__func__,adev->card,adev->device);
+ }
+
+ ALOGV("%s enter %d,%d,%d,%d,%d",__func__,
+ out->pcm_config.channels,
+ out->pcm_config.rate,
+ out->pcm_config.period_size,
+ out->pcm_config.period_count,
+ out->pcm_config.format);
+
+ out->pcm_config.start_threshold = 0;
+ out->pcm_config.stop_threshold = 0;
+ out->pcm_config.silence_threshold = 0;
+
+ if(activePcm){
+ ALOGV("Closing already open tiny alsa stream running state %d",(int)(activePcm));
+ pcm_close(activePcm);
+ activePcm = NULL;
+ }
+
+ /*TODO - this needs to be updated once the device connect intent sends
+ card, device id*/
+ adev->card = get_card_number_by_name("IntelHDMI");
+ ALOGD("%s: HDMI card number = %d, device = %d",__func__,adev->card,adev->device);
+
+ out->pcm = pcm_open(adev->card, adev->device, PCM_OUT, &out->pcm_config);
+
+ if (out->pcm && !pcm_is_ready(out->pcm)) {
+ ALOGE("pcm_open() failed: %s", pcm_get_error(out->pcm));
+ pcm_close(out->pcm);
+ activePcm = NULL;
+ return -ENOMEM;
+ }
+
+ activePcm = out->pcm;
+ activeChannel = out->pcm_config.channels;
+
+ ALOGV("Initialized PCM device for channels %d handle = %d",out->pcm_config.channels, (int)activePcm);
+ ALOGV("%s exit",__func__);
+ return 0;
+}
+
+/* API functions */
+
+static uint32_t out_get_sample_rate(const struct audio_stream *stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ return out->pcm_config.rate;
+}
+
+static int out_set_sample_rate(struct audio_stream *stream, uint32_t rate)
+{
+ UNUSED_PARAMETER(stream);
+ UNUSED_PARAMETER(rate);
+
+ return 0;
+}
+
+static size_t out_get_buffer_size(const struct audio_stream *stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ size_t buf_size;
+
+ if(out->channel_mask > 2){
+ buf_size = out->pcm_config.period_size *
+ audio_stream_frame_size((struct audio_stream *)stream);
+ }
+ else{
+ buf_size = out->pcm_config.period_size *
+ out->pcm_config.period_count *
+ audio_stream_frame_size((struct audio_stream *)stream);
+
+ /*latency of audio flinger is based on this
+ buffer size. modifying the buffer size to avoid
+ starvation*/
+ buf_size/=LATENCY_TO_BUFFER_SIZE_RATIO;
+ }
+
+ ALOGV("%s : %d, period_size : %d, frame_size : %d",
+ __func__,
+ buf_size,
+ out->pcm_config.period_size,
+ audio_stream_frame_size((struct audio_stream *)stream));
+
+ return buf_size;
+
+}
+
+static uint32_t out_get_channels(const struct audio_stream *stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ ALOGV("%s channel mask : %x",__func__,out->channel_mask);
+ return out->channel_mask;
+}
+
+static audio_format_t out_get_format(const struct audio_stream *stream)
+{
+ UNUSED_PARAMETER(stream);
+
+ return AUDIO_FORMAT_PCM_16_BIT;
+}
+
+static int out_set_format(struct audio_stream *stream, audio_format_t format)
+{
+ UNUSED_PARAMETER(stream);
+ UNUSED_PARAMETER(format);
+
+ return 0;
+}
+
+static int out_standby(struct audio_stream *stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+
+ ALOGV("%s enter standby = %d",__func__,out->standby);
+
+ pthread_mutex_lock(&out->dev->lock);
+ pthread_mutex_lock(&out->lock);
+
+ if (!out->standby && activePcm) {
+ pcm_close(activePcm);
+ out->pcm = NULL;
+ out->standby = true;
+ activePcm = NULL;
+ ALOGV("%s PCM device closed",__func__);
+ }
+
+ pthread_mutex_unlock(&out->lock);
+ pthread_mutex_unlock(&out->dev->lock);
+
+ ALOGV("%s exit",__func__);
+ return 0;
+}
+
+static int out_dump(const struct audio_stream *stream, int fd)
+{
+ UNUSED_PARAMETER(stream);
+ UNUSED_PARAMETER(fd);
+ return 0;
+}
+
+static int out_set_parameters(struct audio_stream *stream, const char *kvpairs)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ struct audio_device *adev = out->dev;
+ struct str_parms *parms;
+ char value[32];
+ int ret;
+ int routing = 0;
+ ALOGV("%s enter",__func__);
+
+ parms = str_parms_create_str(kvpairs);
+
+ pthread_mutex_lock(&adev->lock);
+
+ if (parms == NULL) {
+ ALOGE("couldn't extract string params from key value pairs");
+ pthread_mutex_unlock(&adev->lock);
+ return 0;
+ }
+
+ ret = str_parms_get_str(parms, "card", value, sizeof(value));
+ if (ret >= 0)
+ adev->card = atoi(value);
+
+ ret = str_parms_get_str(parms, "device", value, sizeof(value));
+ if (ret >= 0)
+ adev->device = atoi(value);
+
+ pthread_mutex_unlock(&adev->lock);
+ str_parms_destroy(parms);
+
+ ALOGV("%s exit",__func__);
+ return 0;
+}
+
+static int parse_channel_map()
+{
+ struct mixer *mixer;
+ int card = 0;
+ struct mixer_ctl *ctl;
+ enum mixer_ctl_type type;
+ unsigned int num_values;
+ unsigned int i,id;
+ int chcount=0, chmap=0;
+
+ card = get_card_number_by_name("IntelHDMI");
+ mixer = mixer_open(card);
+ if (!mixer) {
+ ALOGE("[EDID] Failed to open mixer\n");
+ goto chmap_error;
+ }
+
+ id = CHANNEL_MAP_REQUEST;
+ if (id >= mixer_get_num_ctls(mixer)) {
+ ALOGE("[EDID] Invalid request for channel map %d",id);
+ goto chmap_error;
+ }
+
+ ctl = mixer_get_ctl_by_name(mixer, "Playback Channel Map");
+
+ //ctl = mixer_get_ctl(mixer, id);
+
+ type = mixer_ctl_get_type(ctl);
+ num_values = mixer_ctl_get_num_values(ctl);
+
+ ALOGV("[EDID]id = %d",id);
+ ALOGV("[EDID]type = %d",type);
+ ALOGV("[EDID]count = %d",num_values);
+
+ for (i = 0; i < num_values; i++) {
+ switch (type)
+ {
+ case MIXER_CTL_TYPE_INT:
+ chmap = mixer_ctl_get_value(ctl, i);
+ ALOGD("[EDID]chmap = %d", chmap);
+ if(chmap > 0) ++chcount;
+ break;
+ default:
+ printf(" unknown");
+ break;
+ };
+ }//for
+
+ ALOGD("[EDID]valid number of channels supported by sink = %d",chcount);
+
+ mixer_close(mixer);
+
+ return chcount;
+
+chmap_error:
+ mixer_close(mixer);
+ return 2;//stereo by default
+
+}
+
+static int out_read_edid(const struct stream_out *stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ struct audio_device *adev = out->dev;
+
+ /**read the channel max param from the sink*/
+ adev->sink_sup_channels = parse_channel_map();
+
+ if(adev->sink_sup_channels == 8) {
+ adev->sup_channel_masks[0] = AUDIO_CHANNEL_OUT_5POINT1;
+ adev->sup_channel_masks[1] = AUDIO_CHANNEL_OUT_7POINT1;
+ }
+ else if((adev->sink_sup_channels == 6) || (adev->sink_sup_channels > 2)) {
+ adev->sup_channel_masks[0] = AUDIO_CHANNEL_OUT_5POINT1;
+ }
+ else {
+ adev->sup_channel_masks[0] = AUDIO_CHANNEL_OUT_STEREO;
+ }
+
+ ALOGV("%s sink supports 0x%x max channels", __func__,adev->sink_sup_channels);
+ return 0;
+}
+
+static char * out_get_parameters(const struct audio_stream *stream, const char *keys)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ struct audio_device *adev = out->dev;
+ struct str_parms *params_in = str_parms_create_str(keys);
+ char *str = NULL;
+ char value[256] = {0};
+ int ret;
+ size_t i, j;
+ bool append = false;
+
+ struct str_parms *params_out = str_parms_create();
+
+ ALOGV("%s Entered %s", __func__,keys);
+
+ if (params_in) {
+ ret = str_parms_get_str(params_in, AUDIO_PARAMETER_STREAM_SUP_CHANNELS, value, sizeof(value));
+ if (ret >= 0) {
+ /*read the channel support from sink*/
+ out_read_edid(out);
+
+ value[0] = '\0';
+ for (i = 0; i < CHANNEL_MASK_MAX; i++) {
+ for (j = 0; j < ARRAY_SIZE(channel_list_table); j++) {
+ if (channel_list_table[j].value == adev->sup_channel_masks[i]) {
+ if (append) {
+ strcat(value, "|");
+ }
+ strcat(value, channel_list_table[j].name);
+ append = true;
+ break;
+ }
+ }
+ }
+ }
+ }
+ if (params_out) {
+ str_parms_add_str(params_out, AUDIO_PARAMETER_STREAM_SUP_CHANNELS, value);
+ str = str_parms_to_str(params_out);
+ } else {
+ str = strdup(keys);
+ }
+
+ ALOGV("%s AUDIO_PARAMETER_STREAM_SUP_CHANNELS %s", __func__,str);
+ if (params_in) {
+ str_parms_destroy(params_in);
+ }
+ if (params_out) {
+ str_parms_destroy(params_out);
+ }
+
+ return str;
+}
+
+static uint32_t out_get_latency(const struct audio_stream_out *stream)
+{
+ struct stream_out *out = (struct stream_out *)stream;
+ return (out->pcm_config.period_size * out->pcm_config.period_count * 1000) /
+ out_get_sample_rate(&stream->common);
+}
+
+static int out_set_volume(struct audio_stream_out *stream, float left,
+ float right)
+{
+ UNUSED_PARAMETER(stream);
+ UNUSED_PARAMETER(left);
+ UNUSED_PARAMETER(right);
+
+ return -ENOSYS;
+}
+
+static ssize_t out_write(struct audio_stream_out *stream, const void* buffer,
+ size_t bytes)
+{
+ int ret = 0;
+ struct stream_out *out = (struct stream_out *)stream;
+ int32_t* dstbuff = NULL;
+ int outbytes = 0;
+
+ ALOGV("%s enter for bytes = %d channels = %d",__func__,bytes, out->pcm_config.channels);
+
+ pthread_mutex_lock(&out->dev->lock);
+ pthread_mutex_lock(&out->lock);
+
+ if(activePcm == NULL) {
+ ALOGV("%s: previous stream closed- open again",__func__);
+ out->standby = true;
+ }
+
+ if (out->standby) {
+ ret = start_output_stream(out);
+ if (ret != 0) {
+ goto err;
+ }
+ out->standby = false;
+ }
+
+ if((!out->pcm) || (activeChannel != out->pcm_config.channels)){
+ ALOGD("%s: null handle to write - device already closed",__func__);
+ goto err;
+ }
+
+ if(Get_SinkSupported_format() == out->pcm_config.format){
+
+ /*16 bit data will be converted to 24 bit over 32 bit data type
+ hence the multiplier 2*/
+ dstbuff = (int32_t*)malloc(bytes* 2);
+ if (!dstbuff) {
+ pthread_mutex_unlock(&out->lock);
+ pthread_mutex_unlock(&out->dev->lock);
+ ALOGE("%s : memory allocation failed",__func__);
+ return -ENOMEM;
+ }
+
+ memset(dstbuff,0,bytes * 2);
+
+ outbytes = make_sinkcompliant_buffers((void*)buffer, (void*)dstbuff,bytes);
+ } //if()for conversion
+
+ if(dstbuff){
+ ret = pcm_write(out->pcm, (void *)dstbuff, outbytes);
+ }
+ else
+ ret = pcm_write(out->pcm, (void *)buffer, bytes);
+
+ ALOGV("pcm_write: %s done for %d input bytes, output bytes = %d ", pcm_get_error(out->pcm),bytes,outbytes);
+
+ free(dstbuff);
+
+err:
+ pthread_mutex_unlock(&out->lock);
+ pthread_mutex_unlock(&out->dev->lock);
+
+ if(ret !=0){
+ uint64_t duration_ms = ((bytes * 1000)/
+ (audio_stream_frame_size(&stream->common)) /
+ (out_get_sample_rate(&stream->common)));
+ ALOGV("%s : silence written", __func__);
+ usleep(duration_ms * 1000);
+ }
+
+ ALOGV("%s exit",__func__);
+ return bytes;
+}
+
+static int out_get_render_position(const struct audio_stream_out *stream,
+ uint32_t *dsp_frames)
+{
+ UNUSED_PARAMETER(stream);
+ UNUSED_PARAMETER(dsp_frames);
+
+ return -EINVAL;
+}
+
+static int out_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
+{
+ UNUSED_PARAMETER(stream);
+ UNUSED_PARAMETER(effect);
+
+ return 0;
+}
+
+static int out_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
+{
+ UNUSED_PARAMETER(stream);
+ UNUSED_PARAMETER(effect);
+
+ return 0;
+}
+
+static int out_get_next_write_timestamp(const struct audio_stream_out *stream,
+ int64_t *timestamp)
+{
+ UNUSED_PARAMETER(stream);
+ UNUSED_PARAMETER(timestamp);
+
+ return -EINVAL;
+}
+
+static int adev_open_output_stream(struct audio_hw_device *dev,
+ audio_io_handle_t handle,
+ audio_devices_t devices,
+ audio_output_flags_t flags,
+ struct audio_config *config,
+ struct audio_stream_out **stream_out)
+{
+ UNUSED_PARAMETER(devices);
+ UNUSED_PARAMETER(handle);
+
+ struct audio_device *adev = (struct audio_device *)dev;
+ struct stream_out *out;
+ int ret;
+ ALOGV("%s enter",__func__);
+
+ out = (struct stream_out *)calloc(1, sizeof(struct stream_out));
+ if (!out)
+ return -ENOMEM;
+
+
+ out->dev = adev;
+ out->channel_mask = AUDIO_CHANNEL_OUT_STEREO;
+ adev->sup_channel_masks[0] = AUDIO_CHANNEL_OUT_STEREO;
+
+ if (flags & AUDIO_OUTPUT_FLAG_DIRECT) {
+ ALOGV("%s: HDMI Multichannel",__func__);
+ if (config->sample_rate == 0)
+ config->sample_rate = pcm_config_default.rate;
+ if (config->channel_mask == 0){
+ /*read the channel support from sink*/
+ out_read_edid(out);
+ if(config->channel_mask == 0)
+ config->channel_mask = AUDIO_CHANNEL_OUT_5POINT1;
+ }
+ } else {
+ ALOGV("%s: HDMI Stereo",__func__);
+ if (config->sample_rate == 0)
+ config->sample_rate = pcm_config_default.rate;
+ if (config->channel_mask == 0)
+ config->channel_mask = AUDIO_CHANNEL_OUT_STEREO;
+ }
+
+ out->channel_mask = config->channel_mask;
+
+ out->pcm_config.channels = popcount(config->channel_mask);
+ out->pcm_config.rate = config->sample_rate;
+ out->pcm_config.period_size = pcm_config_default.period_size;
+ out->pcm_config.period_count = pcm_config_default.period_count;
+ out->pcm_config.format = pcm_config_default.format;
+
+ 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.common.add_audio_effect = out_add_audio_effect;
+ out->stream.common.remove_audio_effect = out_remove_audio_effect;
+ 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;
+ out->stream.get_next_write_timestamp = out_get_next_write_timestamp;
+
+ config->format = out_get_format(&out->stream.common);
+ config->channel_mask = out_get_channels(&out->stream.common);
+ config->sample_rate = out_get_sample_rate(&out->stream.common);
+
+ out->standby = true;
+
+ adev->card = -1;
+ adev->device = -1;
+
+ pthread_mutex_lock(&out->dev->lock);
+ pthread_mutex_lock(&out->lock);
+
+ if(activePcm){
+ ALOGV("Closing already open tiny alsa stream %d",(int)out->pcm);
+ pcm_close(activePcm);
+ activePcm = NULL;
+ }
+ ret = start_output_stream(out);
+ if (ret != 0) {
+ ALOGV("%s: stream start failed", __func__);
+ goto err_open;
+ }
+
+ out->standby = false;
+
+ *stream_out = &out->stream;
+
+ pthread_mutex_unlock(&out->lock);
+ pthread_mutex_unlock(&out->dev->lock);
+
+ ALOGV("%s exit",__func__);
+ return 0;
+
+err_open:
+ ALOGE("%s exit with error",__func__);
+ pthread_mutex_unlock(&out->lock);
+ pthread_mutex_unlock(&out->dev->lock);
+ free(out);
+ *stream_out = NULL;
+ return ret;
+}
+
+static void adev_close_output_stream(struct audio_hw_device *dev,
+ struct audio_stream_out *stream)
+{
+ UNUSED_PARAMETER(dev);
+
+ struct stream_out *out = (struct stream_out *)stream;
+
+ ALOGV("%s enter",__func__);
+ out->standby = false;
+ out_standby(&stream->common);
+ free(stream);
+ ALOGV("%s exit",__func__);
+}
+
+static int adev_set_parameters(struct audio_hw_device *dev, const char *kvpairs)
+{
+ UNUSED_PARAMETER(dev);
+ UNUSED_PARAMETER(kvpairs);
+
+ return 0;
+}
+
+static char * adev_get_parameters(const struct audio_hw_device *dev,
+ const char *keys)
+{
+ UNUSED_PARAMETER(dev);
+ UNUSED_PARAMETER(keys);
+
+ return strdup("");
+}
+
+static int adev_init_check(const struct audio_hw_device *dev)
+{
+ UNUSED_PARAMETER(dev);
+
+ return 0;
+}
+
+static int adev_set_voice_volume(struct audio_hw_device *dev, float volume)
+{
+ UNUSED_PARAMETER(dev);
+ UNUSED_PARAMETER(volume);
+
+ return -ENOSYS;
+}
+
+static int adev_set_master_volume(struct audio_hw_device *dev, float volume)
+{
+ UNUSED_PARAMETER(dev);
+ UNUSED_PARAMETER(volume);
+
+ return -ENOSYS;
+}
+
+static int adev_set_mode(struct audio_hw_device *dev, audio_mode_t mode)
+{
+ UNUSED_PARAMETER(dev);
+ UNUSED_PARAMETER(mode);
+
+ return 0;
+}
+
+static int adev_set_mic_mute(struct audio_hw_device *dev, bool state)
+{
+ UNUSED_PARAMETER(dev);
+ UNUSED_PARAMETER(state);
+
+ return -ENOSYS;
+}
+
+static int adev_get_mic_mute(const struct audio_hw_device *dev, bool *state)
+{
+ UNUSED_PARAMETER(dev);
+ UNUSED_PARAMETER(state);
+
+ return -ENOSYS;
+}
+
+static size_t adev_get_input_buffer_size(const struct audio_hw_device *dev,
+ const struct audio_config *config)
+{
+ UNUSED_PARAMETER(dev);
+ UNUSED_PARAMETER(config);
+
+ return 0;
+}
+
+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)
+{
+ UNUSED_PARAMETER(dev);
+ UNUSED_PARAMETER(handle);
+ UNUSED_PARAMETER(devices);
+ UNUSED_PARAMETER(config);
+ UNUSED_PARAMETER(stream_in);
+
+ return -ENOSYS;
+}
+
+static void adev_close_input_stream(struct audio_hw_device *dev,
+ struct audio_stream_in *stream)
+{
+ UNUSED_PARAMETER(dev);
+ UNUSED_PARAMETER(stream);
+}
+
+static int adev_dump(const audio_hw_device_t *device, int fd)
+{
+ UNUSED_PARAMETER(device);
+ UNUSED_PARAMETER(fd);
+
+ return 0;
+}
+
+static int adev_close(hw_device_t *device)
+{
+ struct audio_device *adev = (struct audio_device *)device;
+
+ free(device);
+ return 0;
+}
+
+static int adev_open(const hw_module_t* module, const char* name,
+ hw_device_t** device)
+{
+ struct audio_device *adev;
+ int ret;
+
+ ALOGV("%s enter",__func__);
+
+ if (strcmp(name, AUDIO_HARDWARE_INTERFACE) != 0)
+ return -EINVAL;
+
+ adev = calloc(1, sizeof(struct audio_device));
+ if (!adev)
+ return -ENOMEM;
+
+ adev->hw_device.common.tag = HARDWARE_DEVICE_TAG;
+ adev->hw_device.common.version = AUDIO_DEVICE_API_VERSION_2_0;
+ adev->hw_device.common.module = (struct hw_module_t *) module;
+ adev->hw_device.common.close = adev_close;
+
+ adev->hw_device.init_check = adev_init_check;
+ adev->hw_device.set_voice_volume = adev_set_voice_volume;
+ adev->hw_device.set_master_volume = adev_set_master_volume;
+ adev->hw_device.set_mode = adev_set_mode;
+ adev->hw_device.set_mic_mute = adev_set_mic_mute;
+ adev->hw_device.get_mic_mute = adev_get_mic_mute;
+ adev->hw_device.set_parameters = adev_set_parameters;
+ adev->hw_device.get_parameters = adev_get_parameters;
+ adev->hw_device.get_input_buffer_size = adev_get_input_buffer_size;
+ adev->hw_device.open_output_stream = adev_open_output_stream;
+ adev->hw_device.close_output_stream = adev_close_output_stream;
+ adev->hw_device.open_input_stream = adev_open_input_stream;
+ adev->hw_device.close_input_stream = adev_close_input_stream;
+ adev->hw_device.dump = adev_dump;
+
+ *device = &adev->hw_device.common;
+
+ ALOGV("%s exit",__func__);
+
+ 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 = "tiny_hdmi audio HW HAL",
+ .author = "The Android Open Source Project",
+ .methods = &hal_module_methods,
+ },
+};
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