1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "legacy_audio_hw_hal"
18//#define LOG_NDEBUG 0
19
20#include <stdint.h>
21
22#include <hardware/hardware.h>
23#include <system/audio.h>
24#include <hardware/audio.h>
25
26#include <hardware_legacy/AudioHardwareInterface.h>
27#include <hardware_legacy/AudioSystemLegacy.h>
28
29namespace android_audio_legacy {
30
31class AudioHardwareInterface;
32
33extern "C" {
34
35struct legacy_audio_module {
36    struct audio_module module;
37};
38
39struct legacy_audio_device {
40    struct audio_hw_device device;
41
42    AudioHardwareInterface *hwif;
43};
44
45struct legacy_stream_out {
46    struct audio_stream_out stream;
47
48    AudioStreamOut *legacy_out;
49};
50
51struct legacy_stream_in {
52    struct audio_stream_in stream;
53
54    AudioStreamIn *legacy_in;
55};
56
57
58enum {
59    HAL_API_REV_1_0,
60    HAL_API_REV_2_0,
61    HAL_API_REV_NUM
62} hal_api_rev;
63
64static uint32_t audio_device_conv_table[][HAL_API_REV_NUM] =
65{
66    /* output devices */
67    { AudioSystem::DEVICE_OUT_EARPIECE, AUDIO_DEVICE_OUT_EARPIECE },
68    { AudioSystem::DEVICE_OUT_SPEAKER, AUDIO_DEVICE_OUT_SPEAKER },
69    { AudioSystem::DEVICE_OUT_WIRED_HEADSET, AUDIO_DEVICE_OUT_WIRED_HEADSET },
70    { AudioSystem::DEVICE_OUT_WIRED_HEADPHONE, AUDIO_DEVICE_OUT_WIRED_HEADPHONE },
71    { AudioSystem::DEVICE_OUT_BLUETOOTH_SCO, AUDIO_DEVICE_OUT_BLUETOOTH_SCO },
72    { AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_HEADSET, AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET },
73    { AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT, AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT },
74    { AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP, AUDIO_DEVICE_OUT_BLUETOOTH_A2DP },
75    { AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES, AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES },
76    { AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER, AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER },
77    { AudioSystem::DEVICE_OUT_AUX_DIGITAL, AUDIO_DEVICE_OUT_AUX_DIGITAL },
78    { AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET, AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET },
79    { AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET, AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET },
80    { AudioSystem::DEVICE_OUT_DEFAULT, AUDIO_DEVICE_OUT_DEFAULT },
81    /* input devices */
82    { AudioSystem::DEVICE_IN_COMMUNICATION, AUDIO_DEVICE_IN_COMMUNICATION },
83    { AudioSystem::DEVICE_IN_AMBIENT, AUDIO_DEVICE_IN_AMBIENT },
84    { AudioSystem::DEVICE_IN_BUILTIN_MIC, AUDIO_DEVICE_IN_BUILTIN_MIC },
85    { AudioSystem::DEVICE_IN_BLUETOOTH_SCO_HEADSET, AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET },
86    { AudioSystem::DEVICE_IN_WIRED_HEADSET, AUDIO_DEVICE_IN_WIRED_HEADSET },
87    { AudioSystem::DEVICE_IN_AUX_DIGITAL, AUDIO_DEVICE_IN_AUX_DIGITAL },
88    { AudioSystem::DEVICE_IN_VOICE_CALL, AUDIO_DEVICE_IN_VOICE_CALL },
89    { AudioSystem::DEVICE_IN_BACK_MIC, AUDIO_DEVICE_IN_BACK_MIC },
90    { AudioSystem::DEVICE_IN_DEFAULT, AUDIO_DEVICE_IN_DEFAULT },
91};
92
93static uint32_t convert_audio_device(uint32_t from_device, int from_rev, int to_rev)
94{
95    const uint32_t k_num_devices = sizeof(audio_device_conv_table)/sizeof(uint32_t)/HAL_API_REV_NUM;
96    uint32_t to_device = AUDIO_DEVICE_NONE;
97    uint32_t in_bit = 0;
98
99    if (from_rev != HAL_API_REV_1_0) {
100        in_bit = from_device & AUDIO_DEVICE_BIT_IN;
101        from_device &= ~AUDIO_DEVICE_BIT_IN;
102    }
103
104    while (from_device) {
105        uint32_t i = 31 - __builtin_clz(from_device);
106        uint32_t cur_device = (1 << i) | in_bit;
107
108        for (i = 0; i < k_num_devices; i++) {
109            if (audio_device_conv_table[i][from_rev] == cur_device) {
110                to_device |= audio_device_conv_table[i][to_rev];
111                break;
112            }
113        }
114        from_device &= ~cur_device;
115    }
116    return to_device;
117}
118
119
120/** audio_stream_out implementation **/
121static uint32_t out_get_sample_rate(const struct audio_stream *stream)
122{
123    const struct legacy_stream_out *out =
124        reinterpret_cast<const struct legacy_stream_out *>(stream);
125    return out->legacy_out->sampleRate();
126}
127
128static int out_set_sample_rate(struct audio_stream *stream, uint32_t rate)
129{
130    struct legacy_stream_out *out =
131        reinterpret_cast<struct legacy_stream_out *>(stream);
132
133    ALOGE("(%s:%d) %s: Implement me!", __FILE__, __LINE__, __func__);
134    /* TODO: implement this */
135    return 0;
136}
137
138static size_t out_get_buffer_size(const struct audio_stream *stream)
139{
140    const struct legacy_stream_out *out =
141        reinterpret_cast<const struct legacy_stream_out *>(stream);
142    return out->legacy_out->bufferSize();
143}
144
145static audio_channel_mask_t out_get_channels(const struct audio_stream *stream)
146{
147    const struct legacy_stream_out *out =
148        reinterpret_cast<const struct legacy_stream_out *>(stream);
149    return (audio_channel_mask_t) out->legacy_out->channels();
150}
151
152static audio_format_t out_get_format(const struct audio_stream *stream)
153{
154    const struct legacy_stream_out *out =
155        reinterpret_cast<const struct legacy_stream_out *>(stream);
156    // legacy API, don't change return type
157    return (audio_format_t) out->legacy_out->format();
158}
159
160static int out_set_format(struct audio_stream *stream, audio_format_t format)
161{
162    struct legacy_stream_out *out =
163        reinterpret_cast<struct legacy_stream_out *>(stream);
164    ALOGE("(%s:%d) %s: Implement me!", __FILE__, __LINE__, __func__);
165    /* TODO: implement me */
166    return 0;
167}
168
169static int out_standby(struct audio_stream *stream)
170{
171    struct legacy_stream_out *out =
172        reinterpret_cast<struct legacy_stream_out *>(stream);
173    return out->legacy_out->standby();
174}
175
176static int out_dump(const struct audio_stream *stream, int fd)
177{
178    const struct legacy_stream_out *out =
179        reinterpret_cast<const struct legacy_stream_out *>(stream);
180    Vector<String16> args;
181    return out->legacy_out->dump(fd, args);
182}
183
184static int out_set_parameters(struct audio_stream *stream, const char *kvpairs)
185{
186    struct legacy_stream_out *out =
187        reinterpret_cast<struct legacy_stream_out *>(stream);
188    int val;
189    String8 s8 = String8(kvpairs);
190    AudioParameter parms = AudioParameter(String8(kvpairs));
191
192    if (parms.getInt(String8(AUDIO_PARAMETER_STREAM_ROUTING), val) == NO_ERROR) {
193        val = convert_audio_device(val, HAL_API_REV_2_0, HAL_API_REV_1_0);
194        parms.remove(String8(AUDIO_PARAMETER_STREAM_ROUTING));
195        parms.addInt(String8(AUDIO_PARAMETER_STREAM_ROUTING), val);
196        s8 = parms.toString();
197    }
198
199    return out->legacy_out->setParameters(s8);
200}
201
202static char * out_get_parameters(const struct audio_stream *stream, const char *keys)
203{
204    const struct legacy_stream_out *out =
205        reinterpret_cast<const struct legacy_stream_out *>(stream);
206    String8 s8;
207    int val;
208
209    s8 = out->legacy_out->getParameters(String8(keys));
210
211    AudioParameter parms = AudioParameter(s8);
212    if (parms.getInt(String8(AUDIO_PARAMETER_STREAM_ROUTING), val) == NO_ERROR) {
213        val = convert_audio_device(val, HAL_API_REV_1_0, HAL_API_REV_2_0);
214        parms.remove(String8(AUDIO_PARAMETER_STREAM_ROUTING));
215        parms.addInt(String8(AUDIO_PARAMETER_STREAM_ROUTING), val);
216        s8 = parms.toString();
217    }
218
219    return strdup(s8.string());
220}
221
222static uint32_t out_get_latency(const struct audio_stream_out *stream)
223{
224    const struct legacy_stream_out *out =
225        reinterpret_cast<const struct legacy_stream_out *>(stream);
226    return out->legacy_out->latency();
227}
228
229static int out_set_volume(struct audio_stream_out *stream, float left,
230                          float right)
231{
232    struct legacy_stream_out *out =
233        reinterpret_cast<struct legacy_stream_out *>(stream);
234    return out->legacy_out->setVolume(left, right);
235}
236
237static ssize_t out_write(struct audio_stream_out *stream, const void* buffer,
238                         size_t bytes)
239{
240    struct legacy_stream_out *out =
241        reinterpret_cast<struct legacy_stream_out *>(stream);
242    return out->legacy_out->write(buffer, bytes);
243}
244
245static int out_get_render_position(const struct audio_stream_out *stream,
246                                   uint32_t *dsp_frames)
247{
248    const struct legacy_stream_out *out =
249        reinterpret_cast<const struct legacy_stream_out *>(stream);
250    return out->legacy_out->getRenderPosition(dsp_frames);
251}
252
253static int out_get_next_write_timestamp(const struct audio_stream_out *stream,
254                                        int64_t *timestamp)
255{
256    const struct legacy_stream_out *out =
257        reinterpret_cast<const struct legacy_stream_out *>(stream);
258    return out->legacy_out->getNextWriteTimestamp(timestamp);
259}
260
261static int out_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
262{
263    return 0;
264}
265
266static int out_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
267{
268    return 0;
269}
270
271/** audio_stream_in implementation **/
272static uint32_t in_get_sample_rate(const struct audio_stream *stream)
273{
274    const struct legacy_stream_in *in =
275        reinterpret_cast<const struct legacy_stream_in *>(stream);
276    return in->legacy_in->sampleRate();
277}
278
279static int in_set_sample_rate(struct audio_stream *stream, uint32_t rate)
280{
281    struct legacy_stream_in *in =
282        reinterpret_cast<struct legacy_stream_in *>(stream);
283
284    ALOGE("(%s:%d) %s: Implement me!", __FILE__, __LINE__, __func__);
285    /* TODO: implement this */
286    return 0;
287}
288
289static size_t in_get_buffer_size(const struct audio_stream *stream)
290{
291    const struct legacy_stream_in *in =
292        reinterpret_cast<const struct legacy_stream_in *>(stream);
293    return in->legacy_in->bufferSize();
294}
295
296static audio_channel_mask_t in_get_channels(const struct audio_stream *stream)
297{
298    const struct legacy_stream_in *in =
299        reinterpret_cast<const struct legacy_stream_in *>(stream);
300    return (audio_channel_mask_t) in->legacy_in->channels();
301}
302
303static audio_format_t in_get_format(const struct audio_stream *stream)
304{
305    const struct legacy_stream_in *in =
306        reinterpret_cast<const struct legacy_stream_in *>(stream);
307    // legacy API, don't change return type
308    return (audio_format_t) in->legacy_in->format();
309}
310
311static int in_set_format(struct audio_stream *stream, audio_format_t format)
312{
313    struct legacy_stream_in *in =
314        reinterpret_cast<struct legacy_stream_in *>(stream);
315    ALOGE("(%s:%d) %s: Implement me!", __FILE__, __LINE__, __func__);
316    /* TODO: implement me */
317    return 0;
318}
319
320static int in_standby(struct audio_stream *stream)
321{
322    struct legacy_stream_in *in = reinterpret_cast<struct legacy_stream_in *>(stream);
323    return in->legacy_in->standby();
324}
325
326static int in_dump(const struct audio_stream *stream, int fd)
327{
328    const struct legacy_stream_in *in =
329        reinterpret_cast<const struct legacy_stream_in *>(stream);
330    Vector<String16> args;
331    return in->legacy_in->dump(fd, args);
332}
333
334static int in_set_parameters(struct audio_stream *stream, const char *kvpairs)
335{
336    struct legacy_stream_in *in =
337        reinterpret_cast<struct legacy_stream_in *>(stream);
338    int val;
339    AudioParameter parms = AudioParameter(String8(kvpairs));
340    String8 s8 = String8(kvpairs);
341
342    if (parms.getInt(String8(AUDIO_PARAMETER_STREAM_ROUTING), val) == NO_ERROR) {
343        val = convert_audio_device(val, HAL_API_REV_2_0, HAL_API_REV_1_0);
344        parms.remove(String8(AUDIO_PARAMETER_STREAM_ROUTING));
345        parms.addInt(String8(AUDIO_PARAMETER_STREAM_ROUTING), val);
346        s8 = parms.toString();
347    }
348
349    return in->legacy_in->setParameters(s8);
350}
351
352static char * in_get_parameters(const struct audio_stream *stream,
353                                const char *keys)
354{
355    const struct legacy_stream_in *in =
356        reinterpret_cast<const struct legacy_stream_in *>(stream);
357    String8 s8;
358    int val;
359
360    s8 = in->legacy_in->getParameters(String8(keys));
361
362    AudioParameter parms = AudioParameter(s8);
363    if (parms.getInt(String8(AUDIO_PARAMETER_STREAM_ROUTING), val) == NO_ERROR) {
364        val = convert_audio_device(val, HAL_API_REV_1_0, HAL_API_REV_2_0);
365        parms.remove(String8(AUDIO_PARAMETER_STREAM_ROUTING));
366        parms.addInt(String8(AUDIO_PARAMETER_STREAM_ROUTING), val);
367        s8 = parms.toString();
368    }
369
370    return strdup(s8.string());
371}
372
373static int in_set_gain(struct audio_stream_in *stream, float gain)
374{
375    struct legacy_stream_in *in =
376        reinterpret_cast<struct legacy_stream_in *>(stream);
377    return in->legacy_in->setGain(gain);
378}
379
380static ssize_t in_read(struct audio_stream_in *stream, void* buffer,
381                       size_t bytes)
382{
383    struct legacy_stream_in *in =
384        reinterpret_cast<struct legacy_stream_in *>(stream);
385    return in->legacy_in->read(buffer, bytes);
386}
387
388static uint32_t in_get_input_frames_lost(struct audio_stream_in *stream)
389{
390    struct legacy_stream_in *in =
391        reinterpret_cast<struct legacy_stream_in *>(stream);
392    return in->legacy_in->getInputFramesLost();
393}
394
395static int in_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
396{
397    const struct legacy_stream_in *in =
398        reinterpret_cast<const struct legacy_stream_in *>(stream);
399    return in->legacy_in->addAudioEffect(effect);
400}
401
402static int in_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
403{
404    const struct legacy_stream_in *in =
405        reinterpret_cast<const struct legacy_stream_in *>(stream);
406    return in->legacy_in->removeAudioEffect(effect);
407}
408
409/** audio_hw_device implementation **/
410static inline struct legacy_audio_device * to_ladev(struct audio_hw_device *dev)
411{
412    return reinterpret_cast<struct legacy_audio_device *>(dev);
413}
414
415static inline const struct legacy_audio_device * to_cladev(const struct audio_hw_device *dev)
416{
417    return reinterpret_cast<const struct legacy_audio_device *>(dev);
418}
419
420static int adev_init_check(const struct audio_hw_device *dev)
421{
422    const struct legacy_audio_device *ladev = to_cladev(dev);
423
424    return ladev->hwif->initCheck();
425}
426
427static int adev_set_voice_volume(struct audio_hw_device *dev, float volume)
428{
429    struct legacy_audio_device *ladev = to_ladev(dev);
430    return ladev->hwif->setVoiceVolume(volume);
431}
432
433static int adev_set_master_volume(struct audio_hw_device *dev, float volume)
434{
435    struct legacy_audio_device *ladev = to_ladev(dev);
436    return ladev->hwif->setMasterVolume(volume);
437}
438
439static int adev_get_master_volume(struct audio_hw_device *dev, float* volume)
440{
441    struct legacy_audio_device *ladev = to_ladev(dev);
442    return ladev->hwif->getMasterVolume(volume);
443}
444
445static int adev_set_mode(struct audio_hw_device *dev, audio_mode_t mode)
446{
447    struct legacy_audio_device *ladev = to_ladev(dev);
448    // as this is the legacy API, don't change it to use audio_mode_t instead of int
449    return ladev->hwif->setMode((int) mode);
450}
451
452static int adev_set_mic_mute(struct audio_hw_device *dev, bool state)
453{
454    struct legacy_audio_device *ladev = to_ladev(dev);
455    return ladev->hwif->setMicMute(state);
456}
457
458static int adev_get_mic_mute(const struct audio_hw_device *dev, bool *state)
459{
460    const struct legacy_audio_device *ladev = to_cladev(dev);
461    return ladev->hwif->getMicMute(state);
462}
463
464static int adev_set_parameters(struct audio_hw_device *dev, const char *kvpairs)
465{
466    struct legacy_audio_device *ladev = to_ladev(dev);
467    return ladev->hwif->setParameters(String8(kvpairs));
468}
469
470static char * adev_get_parameters(const struct audio_hw_device *dev,
471                                  const char *keys)
472{
473    const struct legacy_audio_device *ladev = to_cladev(dev);
474    String8 s8;
475
476    s8 = ladev->hwif->getParameters(String8(keys));
477    return strdup(s8.string());
478}
479
480static size_t adev_get_input_buffer_size(const struct audio_hw_device *dev,
481                                         const struct audio_config *config)
482{
483    const struct legacy_audio_device *ladev = to_cladev(dev);
484    return ladev->hwif->getInputBufferSize(config->sample_rate, (int) config->format,
485                                           audio_channel_count_from_in_mask(config->channel_mask));
486}
487
488static int adev_open_output_stream(struct audio_hw_device *dev,
489                                   audio_io_handle_t handle,
490                                   audio_devices_t devices,
491                                   audio_output_flags_t flags,
492                                   struct audio_config *config,
493                                   struct audio_stream_out **stream_out,
494                                   const char *address __unused)
495{
496    struct legacy_audio_device *ladev = to_ladev(dev);
497    status_t status;
498    struct legacy_stream_out *out;
499    int ret;
500
501    out = (struct legacy_stream_out *)calloc(1, sizeof(*out));
502    if (!out)
503        return -ENOMEM;
504
505    devices = convert_audio_device(devices, HAL_API_REV_2_0, HAL_API_REV_1_0);
506
507    out->legacy_out = ladev->hwif->openOutputStreamWithFlags(devices, flags,
508                                                    (int *) &config->format,
509                                                    &config->channel_mask,
510                                                    &config->sample_rate, &status);
511    if (!out->legacy_out) {
512        ret = status;
513        goto err_open;
514    }
515
516    out->stream.common.get_sample_rate = out_get_sample_rate;
517    out->stream.common.set_sample_rate = out_set_sample_rate;
518    out->stream.common.get_buffer_size = out_get_buffer_size;
519    out->stream.common.get_channels = out_get_channels;
520    out->stream.common.get_format = out_get_format;
521    out->stream.common.set_format = out_set_format;
522    out->stream.common.standby = out_standby;
523    out->stream.common.dump = out_dump;
524    out->stream.common.set_parameters = out_set_parameters;
525    out->stream.common.get_parameters = out_get_parameters;
526    out->stream.common.add_audio_effect = out_add_audio_effect;
527    out->stream.common.remove_audio_effect = out_remove_audio_effect;
528    out->stream.get_latency = out_get_latency;
529    out->stream.set_volume = out_set_volume;
530    out->stream.write = out_write;
531    out->stream.get_render_position = out_get_render_position;
532    out->stream.get_next_write_timestamp = out_get_next_write_timestamp;
533
534    *stream_out = &out->stream;
535    return 0;
536
537err_open:
538    free(out);
539    *stream_out = NULL;
540    return ret;
541}
542
543static void adev_close_output_stream(struct audio_hw_device *dev,
544                                     struct audio_stream_out* stream)
545{
546    struct legacy_audio_device *ladev = to_ladev(dev);
547    struct legacy_stream_out *out = reinterpret_cast<struct legacy_stream_out *>(stream);
548
549    ladev->hwif->closeOutputStream(out->legacy_out);
550    free(out);
551}
552
553/** This method creates and opens the audio hardware input stream */
554static int adev_open_input_stream(struct audio_hw_device *dev,
555                                  audio_io_handle_t handle,
556                                  audio_devices_t devices,
557                                  struct audio_config *config,
558                                  struct audio_stream_in **stream_in,
559                                  audio_input_flags_t flags __unused,
560                                  const char *address __unused,
561                                  audio_source_t source __unused)
562{
563    struct legacy_audio_device *ladev = to_ladev(dev);
564    status_t status;
565    struct legacy_stream_in *in;
566    int ret;
567
568    in = (struct legacy_stream_in *)calloc(1, sizeof(*in));
569    if (!in)
570        return -ENOMEM;
571
572    devices = convert_audio_device(devices, HAL_API_REV_2_0, HAL_API_REV_1_0);
573
574    in->legacy_in = ladev->hwif->openInputStream(devices, (int *) &config->format,
575                                                 &config->channel_mask, &config->sample_rate,
576                                                 &status, (AudioSystem::audio_in_acoustics)0);
577    if (!in->legacy_in) {
578        ret = status;
579        goto err_open;
580    }
581
582    in->stream.common.get_sample_rate = in_get_sample_rate;
583    in->stream.common.set_sample_rate = in_set_sample_rate;
584    in->stream.common.get_buffer_size = in_get_buffer_size;
585    in->stream.common.get_channels = in_get_channels;
586    in->stream.common.get_format = in_get_format;
587    in->stream.common.set_format = in_set_format;
588    in->stream.common.standby = in_standby;
589    in->stream.common.dump = in_dump;
590    in->stream.common.set_parameters = in_set_parameters;
591    in->stream.common.get_parameters = in_get_parameters;
592    in->stream.common.add_audio_effect = in_add_audio_effect;
593    in->stream.common.remove_audio_effect = in_remove_audio_effect;
594    in->stream.set_gain = in_set_gain;
595    in->stream.read = in_read;
596    in->stream.get_input_frames_lost = in_get_input_frames_lost;
597
598    *stream_in = &in->stream;
599    return 0;
600
601err_open:
602    free(in);
603    *stream_in = NULL;
604    return ret;
605}
606
607static void adev_close_input_stream(struct audio_hw_device *dev,
608                               struct audio_stream_in *stream)
609{
610    struct legacy_audio_device *ladev = to_ladev(dev);
611    struct legacy_stream_in *in =
612        reinterpret_cast<struct legacy_stream_in *>(stream);
613
614    ladev->hwif->closeInputStream(in->legacy_in);
615    free(in);
616}
617
618static int adev_dump(const struct audio_hw_device *dev, int fd)
619{
620    const struct legacy_audio_device *ladev = to_cladev(dev);
621    Vector<String16> args;
622
623    return ladev->hwif->dumpState(fd, args);
624}
625
626static int legacy_adev_close(hw_device_t* device)
627{
628    struct audio_hw_device *hwdev =
629                        reinterpret_cast<struct audio_hw_device *>(device);
630    struct legacy_audio_device *ladev = to_ladev(hwdev);
631
632    if (!ladev)
633        return 0;
634
635    if (ladev->hwif)
636        delete ladev->hwif;
637
638    free(ladev);
639    return 0;
640}
641
642static int legacy_adev_open(const hw_module_t* module, const char* name,
643                            hw_device_t** device)
644{
645    struct legacy_audio_device *ladev;
646    int ret;
647
648    if (strcmp(name, AUDIO_HARDWARE_INTERFACE) != 0)
649        return -EINVAL;
650
651    ladev = (struct legacy_audio_device *)calloc(1, sizeof(*ladev));
652    if (!ladev)
653        return -ENOMEM;
654
655    ladev->device.common.tag = HARDWARE_DEVICE_TAG;
656    ladev->device.common.version = AUDIO_DEVICE_API_VERSION_2_0;
657    ladev->device.common.module = const_cast<hw_module_t*>(module);
658    ladev->device.common.close = legacy_adev_close;
659
660    ladev->device.init_check = adev_init_check;
661    ladev->device.set_voice_volume = adev_set_voice_volume;
662    ladev->device.set_master_volume = adev_set_master_volume;
663    ladev->device.get_master_volume = adev_get_master_volume;
664    ladev->device.set_mode = adev_set_mode;
665    ladev->device.set_mic_mute = adev_set_mic_mute;
666    ladev->device.get_mic_mute = adev_get_mic_mute;
667    ladev->device.set_parameters = adev_set_parameters;
668    ladev->device.get_parameters = adev_get_parameters;
669    ladev->device.get_input_buffer_size = adev_get_input_buffer_size;
670    ladev->device.open_output_stream = adev_open_output_stream;
671    ladev->device.close_output_stream = adev_close_output_stream;
672    ladev->device.open_input_stream = adev_open_input_stream;
673    ladev->device.close_input_stream = adev_close_input_stream;
674    ladev->device.dump = adev_dump;
675
676    ladev->hwif = createAudioHardware();
677    if (!ladev->hwif) {
678        ret = -EIO;
679        goto err_create_audio_hw;
680    }
681
682    *device = &ladev->device.common;
683
684    return 0;
685
686err_create_audio_hw:
687    free(ladev);
688    return ret;
689}
690
691static struct hw_module_methods_t legacy_audio_module_methods = {
692        open: legacy_adev_open
693};
694
695struct legacy_audio_module HAL_MODULE_INFO_SYM = {
696    module: {
697        common: {
698            tag: HARDWARE_MODULE_TAG,
699            module_api_version: AUDIO_MODULE_API_VERSION_0_1,
700            hal_api_version: HARDWARE_HAL_API_VERSION,
701            id: AUDIO_HARDWARE_MODULE_ID,
702            name: "LEGACY Audio HW HAL",
703            author: "The Android Open Source Project",
704            methods: &legacy_audio_module_methods,
705            dso : NULL,
706            reserved : {0},
707        },
708    },
709};
710
711}; // extern "C"
712
713}; // namespace android_audio_legacy
714