1 /*
2 **
3 ** Copyright 2014, The Android Open Source Project
4 **
5 ** Licensed under the Apache License, Version 2.0 (the "License");
6 ** you may not use this file except in compliance with the License.
7 ** You may obtain a copy of the License at
8 **
9 ** http://www.apache.org/licenses/LICENSE-2.0
10 **
11 ** Unless required by applicable law or agreed to in writing, software
12 ** distributed under the License is distributed on an "AS IS" BASIS,
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 ** See the License for the specific language governing permissions and
15 ** limitations under the License.
16 */
17
18 #define LOG_TAG "AudioHAL:HDMIAudioOutput"
19
20 #include <utils/Log.h>
21
22 #include <stdint.h>
23
24 #include "AudioHardwareOutput.h"
25 #include "AudioStreamOut.h"
26 #include "HDMIAudioOutput.h"
27
28 namespace android {
29
30 extern AudioHardwareOutput gAudioHardwareOutput;
31
HDMIAudioOutput()32 HDMIAudioOutput::HDMIAudioOutput()
33 : AudioOutput(kHDMI_ALSADeviceName, PCM_FORMAT_S24_LE)
34 {
35 }
36
~HDMIAudioOutput()37 HDMIAudioOutput::~HDMIAudioOutput()
38 {
39 }
40
setupForStream(const AudioStreamOut & stream)41 status_t HDMIAudioOutput::setupForStream(const AudioStreamOut& stream)
42 {
43 mFramesPerChunk = stream.framesPerChunk();
44 mFramesPerSec = stream.outputSampleRate();
45 mBufferChunks = stream.nomChunksInFlight();
46 mChannelCnt = audio_channel_count_from_out_mask(stream.chanMask());
47
48 ALOGI("setupForStream format %08x, rate = %u", stream.format(), mFramesPerSec);
49
50 if (!gAudioHardwareOutput.getHDMIAudioCaps().supportsFormat(
51 stream.format(),
52 stream.sampleRate(),
53 mChannelCnt)) {
54 ALOGE("HDMI Sink does not support format = 0x%0X, srate = %d, #channels = 0%d",
55 stream.format(), mFramesPerSec, mChannelCnt);
56 return BAD_VALUE;
57 }
58
59 if (stream.isEncoded()) {
60 ALOGI("HDMIAudioOutput::setupForStream() use %d channels for playing encoded data!",
61 SPDIF_ENCODED_CHANNEL_COUNT);
62 mChannelCnt = SPDIF_ENCODED_CHANNEL_COUNT;
63 }
64
65 setupInternal();
66
67 // TODO Maybe set SPDIF channel status to compressed mode.
68 // Some receivers do not need the bit set. But some might.
69
70 return initCheck();
71 }
72
73 #define IEC958_AES0_NONAUDIO (1<<1) /* 0 = audio, 1 = non-audio */
74
applyPendingVolParams()75 void HDMIAudioOutput::applyPendingVolParams()
76 {
77 }
78
dump(String8 & result)79 void HDMIAudioOutput::dump(String8& result)
80 {
81 const size_t SIZE = 256;
82 char buffer[SIZE];
83
84 snprintf(buffer, SIZE,
85 "\t%s Audio Output\n"
86 "\t\tSample Rate : %d\n"
87 "\t\tChannel Count : %d\n"
88 "\t\tState : %d\n",
89 getOutputName(),
90 mFramesPerSec,
91 mChannelCnt,
92 mState);
93 result.append(buffer);
94 }
95
96 } // namespace android
97