android_AudioToCbRenderer.cpp revision 7f5cc1afe49395fefaad9b2bbd728a45d1bfda6a 
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
22#include <media/stagefright/foundation/ADebug.h>
23
24namespace android {
25
26//--------------------------------------------------------------------------------------------------
27AudioToCbRenderer::AudioToCbRenderer(AudioPlayback_Parameters* params) : AudioSfDecoder(params),
28        mDecodeCbf(NULL),
29        mDecodeUser(NULL)
30{
31    SL_LOGD("AudioToCbRenderer::AudioToCbRenderer()");
32
33}
34
35
36AudioToCbRenderer::~AudioToCbRenderer() {
37    SL_LOGD("AudioToCbRenderer::~AudioToCbRenderer()");
38
39}
40
41void AudioToCbRenderer::setDataPushListener(const data_push_cbf_t pushCbf, void* pushUser) {
42    mDecodeCbf = pushCbf;
43    mDecodeUser = pushUser;
44}
45
46//--------------------------------------------------
47// Event handlers
48void AudioToCbRenderer::onPrepare() {
49    SL_LOGD("AudioToCbRenderer::onPrepare()");
50    AudioSfDecoder::onPrepare();
51    SL_LOGD("AudioToCbRenderer::onPrepare() done, mStateFlags=0x%x", mStateFlags);
52}
53
54
55void AudioToCbRenderer::onRender() {
56    SL_LOGV("AudioToCbRenderer::onRender");
57
58    Mutex::Autolock _l(mDecodeBufferLock);
59
60    if (NULL == mDecodeBuffer) {
61        // nothing to render, move along
62        //SL_LOGV("AudioToCbRenderer::onRender NULL buffer, exiting");
63        return;
64    }
65
66    if (mStateFlags & kFlagPlaying) {
67        if (NULL != mDecodeCbf) {
68            size_t full = mDecodeBuffer->range_length();
69            size_t consumed = 0;
70            size_t offset = 0;
71            while (offset < full) {
72                consumed = mDecodeCbf(
73                        (const uint8_t *)mDecodeBuffer->data()
74                                + offset + mDecodeBuffer->range_offset(),
75                        mDecodeBuffer->range_length() - offset,
76                        mDecodeUser);
77                offset += consumed;
78                //SL_LOGV("consumed=%u, offset=%u, full=%u", consumed, offset, full);
79                if (consumed == 0) {
80                    // decoded data is not being consumed, skip this buffer
81                    break;
82                }
83            }
84        }
85        (new AMessage(kWhatDecode, id()))->post();
86    }
87
88    mDecodeBuffer->release();
89    mDecodeBuffer = NULL;
90}
91
92
93//--------------------------------------------------
94// Audio output
95void AudioToCbRenderer::createAudioSink() {
96    SL_LOGD("AudioToCbRenderer::createAudioSink()");
97    SL_LOGV("sample rate = %d nb channels = %d", mSampleRateHz, mNumChannels);
98}
99
100
101void AudioToCbRenderer::updateAudioSink() {
102    SL_LOGD("AudioToCbRenderer::updateAudioSink()");
103    if (mAudioSource != 0) {
104        sp<MetaData> meta = mAudioSource->getFormat();
105
106        SL_LOGV("old sample rate = %d", mSampleRateHz);
107        CHECK(meta->findInt32(kKeyChannelCount, &mChannelCount));
108        int32_t sr;
109        CHECK(meta->findInt32(kKeySampleRate, &sr));
110        mSampleRateHz = (uint32_t) sr;
111        SL_LOGV("new sample rate = %d", mSampleRateHz);
112
113    }
114}
115
116
117void AudioToCbRenderer::startAudioSink() {
118    SL_LOGD("AudioToCbRenderer::startAudioSink()");
119}
120
121
122void AudioToCbRenderer::pauseAudioSink() {
123    SL_LOGD("AudioToCbRenderer::pauseAudioSink()");
124}
125
126} // namespace android
127