android_AudioToCbRenderer.cpp revision 2b06e20ae32388f6e1dfd088d9773c34e6b1cb45 
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 USE_LOG SLAndroidLogLevel_Verbose
18
19#include "sles_allinclusive.h"
20#include "android/android_AudioToCbRenderer.h"
21
22namespace android {
23
24//--------------------------------------------------------------------------------------------------
25AudioToCbRenderer::AudioToCbRenderer(AudioPlayback_Parameters* params) : AudioSfDecoder(params),
26        mDecodeCbf(NULL),
27        mDecodeUser(NULL)
28{
29    SL_LOGD("AudioToCbRenderer::AudioToCbRenderer()");
30
31}
32
33
34AudioToCbRenderer::~AudioToCbRenderer() {
35    SL_LOGD("AudioToCbRenderer::~AudioToCbRenderer()");
36
37}
38
39void AudioToCbRenderer::setDataPushListener(const data_push_cbf_t pushCbf, void* pushUser) {
40    mDecodeCbf = pushCbf;
41    mDecodeUser = pushUser;
42}
43
44//--------------------------------------------------
45// Event handlers
46void AudioToCbRenderer::onPrepare() {
47    SL_LOGD("AudioToCbRenderer::onPrepare()");
48    AudioSfDecoder::onPrepare();
49    SL_LOGD("AudioToCbRenderer::onPrepare() done, mStateFlags=0x%x", mStateFlags);
50}
51
52
53void AudioToCbRenderer::onRender() {
54    SL_LOGV("AudioToCbRenderer::onRender");
55
56    Mutex::Autolock _l(mDecodeBufferLock);
57
58    if (NULL == mDecodeBuffer) {
59        // nothing to render, move along
60        //SL_LOGV("AudioToCbRenderer::onRender NULL buffer, exiting");
61        return;
62    }
63
64    if (mStateFlags & kFlagPlaying) {
65        if (NULL != mDecodeCbf) {
66            size_t full = mDecodeBuffer->range_length();
67            size_t consumed = 0;
68            size_t offset = 0;
69            while (offset < full) {
70                consumed = mDecodeCbf(
71                        (const uint8_t *)mDecodeBuffer->data()
72                                + offset + mDecodeBuffer->range_offset(),
73                        mDecodeBuffer->range_length() - offset,
74                        mDecodeUser);
75                offset += consumed;
76                //SL_LOGV("consumed=%lu, offset=%lu, full=%lu", consumed, offset, full);
77                if (consumed == 0) {
78                    // decoded data is not being consumed, skip this buffer
79                    break;
80                }
81            }
82        }
83        (new AMessage(kWhatDecode, id()))->post();
84    }
85
86    mDecodeBuffer->release();
87    mDecodeBuffer = NULL;
88}
89
90
91//--------------------------------------------------
92// Audio output
93void AudioToCbRenderer::createAudioSink() {
94    SL_LOGD("AudioToCbRenderer::createAudioSink()");
95    SL_LOGV("sample rate = %d nb channels = %d", mSampleRateHz, mNumChannels);
96}
97
98
99void AudioToCbRenderer::updateAudioSink() {
100    SL_LOGD("AudioToCbRenderer::updateAudioSink()");
101    if (mAudioSource != 0) {
102        sp<MetaData> meta = mAudioSource->getFormat();
103
104        SL_LOGV("old sample rate = %d", mSampleRateHz);
105        CHECK(meta->findInt32(kKeyChannelCount, &mNumChannels));
106        CHECK(meta->findInt32(kKeySampleRate, &mSampleRateHz));
107        SL_LOGV("new sample rate = %d", mSampleRateHz);
108
109    }
110}
111
112
113void AudioToCbRenderer::startAudioSink() {
114    SL_LOGD("AudioToCbRenderer::startAudioSink()");
115}
116
117
118void AudioToCbRenderer::pauseAudioSink() {
119    SL_LOGD("AudioToCbRenderer::pauseAudioSink()");
120}
121
122} // namespace android
123