SoftMP3.cpp revision 9a8ded7348c5b2302dd27b285b395416bc842c49 
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_NDEBUG 0
18#define LOG_TAG "SoftMP3"
19#include <utils/Log.h>
20
21#include "SoftMP3.h"
22
23#include <media/stagefright/foundation/ADebug.h>
24#include <media/stagefright/MediaDefs.h>
25
26#include "include/pvmp3decoder_api.h"
27
28namespace android {
29
30template<class T>
31static void InitOMXParams(T *params) {
32    params->nSize = sizeof(T);
33    params->nVersion.s.nVersionMajor = 1;
34    params->nVersion.s.nVersionMinor = 0;
35    params->nVersion.s.nRevision = 0;
36    params->nVersion.s.nStep = 0;
37}
38
39SoftMP3::SoftMP3(
40        const char *name,
41        const OMX_CALLBACKTYPE *callbacks,
42        OMX_PTR appData,
43        OMX_COMPONENTTYPE **component)
44    : SimpleSoftOMXComponent(name, callbacks, appData, component),
45      mConfig(new tPVMP3DecoderExternal),
46      mDecoderBuf(NULL),
47      mAnchorTimeUs(0),
48      mNumFramesOutput(0),
49      mNumChannels(2),
50      mSamplingRate(44100),
51      mSignalledError(false),
52      mOutputPortSettingsChange(NONE) {
53    initPorts();
54    initDecoder();
55}
56
57SoftMP3::~SoftMP3() {
58    if (mDecoderBuf != NULL) {
59        free(mDecoderBuf);
60        mDecoderBuf = NULL;
61    }
62
63    delete mConfig;
64    mConfig = NULL;
65}
66
67void SoftMP3::initPorts() {
68    OMX_PARAM_PORTDEFINITIONTYPE def;
69    InitOMXParams(&def);
70
71    def.nPortIndex = 0;
72    def.eDir = OMX_DirInput;
73    def.nBufferCountMin = kNumBuffers;
74    def.nBufferCountActual = def.nBufferCountMin;
75    def.nBufferSize = 8192;
76    def.bEnabled = OMX_TRUE;
77    def.bPopulated = OMX_FALSE;
78    def.eDomain = OMX_PortDomainAudio;
79    def.bBuffersContiguous = OMX_FALSE;
80    def.nBufferAlignment = 1;
81
82    def.format.audio.cMIMEType =
83        const_cast<char *>(MEDIA_MIMETYPE_AUDIO_MPEG);
84
85    def.format.audio.pNativeRender = NULL;
86    def.format.audio.bFlagErrorConcealment = OMX_FALSE;
87    def.format.audio.eEncoding = OMX_AUDIO_CodingMP3;
88
89    addPort(def);
90
91    def.nPortIndex = 1;
92    def.eDir = OMX_DirOutput;
93    def.nBufferCountMin = kNumBuffers;
94    def.nBufferCountActual = def.nBufferCountMin;
95    def.nBufferSize = kOutputBufferSize;
96    def.bEnabled = OMX_TRUE;
97    def.bPopulated = OMX_FALSE;
98    def.eDomain = OMX_PortDomainAudio;
99    def.bBuffersContiguous = OMX_FALSE;
100    def.nBufferAlignment = 2;
101
102    def.format.audio.cMIMEType = const_cast<char *>("audio/raw");
103    def.format.audio.pNativeRender = NULL;
104    def.format.audio.bFlagErrorConcealment = OMX_FALSE;
105    def.format.audio.eEncoding = OMX_AUDIO_CodingPCM;
106
107    addPort(def);
108}
109
110void SoftMP3::initDecoder() {
111    mConfig->equalizerType = flat;
112    mConfig->crcEnabled = false;
113
114    uint32_t memRequirements = pvmp3_decoderMemRequirements();
115    mDecoderBuf = malloc(memRequirements);
116
117    pvmp3_InitDecoder(mConfig, mDecoderBuf);
118}
119
120OMX_ERRORTYPE SoftMP3::internalGetParameter(
121        OMX_INDEXTYPE index, OMX_PTR params) {
122    switch (index) {
123        case OMX_IndexParamAudioPcm:
124        {
125            OMX_AUDIO_PARAM_PCMMODETYPE *pcmParams =
126                (OMX_AUDIO_PARAM_PCMMODETYPE *)params;
127
128            if (pcmParams->nPortIndex > 1) {
129                return OMX_ErrorUndefined;
130            }
131
132            pcmParams->eNumData = OMX_NumericalDataSigned;
133            pcmParams->eEndian = OMX_EndianBig;
134            pcmParams->bInterleaved = OMX_TRUE;
135            pcmParams->nBitPerSample = 16;
136            pcmParams->ePCMMode = OMX_AUDIO_PCMModeLinear;
137            pcmParams->eChannelMapping[0] = OMX_AUDIO_ChannelLF;
138            pcmParams->eChannelMapping[1] = OMX_AUDIO_ChannelRF;
139
140            pcmParams->nChannels = mNumChannels;
141            pcmParams->nSamplingRate = mSamplingRate;
142
143            return OMX_ErrorNone;
144        }
145
146        default:
147            return SimpleSoftOMXComponent::internalGetParameter(index, params);
148    }
149}
150
151OMX_ERRORTYPE SoftMP3::internalSetParameter(
152        OMX_INDEXTYPE index, const OMX_PTR params) {
153    switch (index) {
154        case OMX_IndexParamStandardComponentRole:
155        {
156            const OMX_PARAM_COMPONENTROLETYPE *roleParams =
157                (const OMX_PARAM_COMPONENTROLETYPE *)params;
158
159            if (strncmp((const char *)roleParams->cRole,
160                        "audio_decoder.mp3",
161                        OMX_MAX_STRINGNAME_SIZE - 1)) {
162                return OMX_ErrorUndefined;
163            }
164
165            return OMX_ErrorNone;
166        }
167
168        default:
169            return SimpleSoftOMXComponent::internalSetParameter(index, params);
170    }
171}
172
173void SoftMP3::onQueueFilled(OMX_U32 portIndex) {
174    if (mSignalledError || mOutputPortSettingsChange != NONE) {
175        return;
176    }
177
178    List<BufferInfo *> &inQueue = getPortQueue(0);
179    List<BufferInfo *> &outQueue = getPortQueue(1);
180
181    while (!inQueue.empty() && !outQueue.empty()) {
182        BufferInfo *inInfo = *inQueue.begin();
183        OMX_BUFFERHEADERTYPE *inHeader = inInfo->mHeader;
184
185        BufferInfo *outInfo = *outQueue.begin();
186        OMX_BUFFERHEADERTYPE *outHeader = outInfo->mHeader;
187
188        if (inHeader->nFlags & OMX_BUFFERFLAG_EOS) {
189            inQueue.erase(inQueue.begin());
190            inInfo->mOwnedByUs = false;
191            notifyEmptyBufferDone(inHeader);
192
193            outHeader->nFilledLen = 0;
194            outHeader->nFlags = OMX_BUFFERFLAG_EOS;
195
196            outQueue.erase(outQueue.begin());
197            outInfo->mOwnedByUs = false;
198            notifyFillBufferDone(outHeader);
199            return;
200        }
201
202        if (inHeader->nOffset == 0) {
203            mAnchorTimeUs = inHeader->nTimeStamp;
204            mNumFramesOutput = 0;
205        }
206
207        mConfig->pInputBuffer =
208            inHeader->pBuffer + inHeader->nOffset;
209
210        mConfig->inputBufferCurrentLength = inHeader->nFilledLen;
211        mConfig->inputBufferMaxLength = 0;
212        mConfig->inputBufferUsedLength = 0;
213
214        mConfig->outputFrameSize = kOutputBufferSize / sizeof(int16_t);
215
216        mConfig->pOutputBuffer =
217            reinterpret_cast<int16_t *>(outHeader->pBuffer);
218
219        ERROR_CODE decoderErr;
220        if ((decoderErr = pvmp3_framedecoder(mConfig, mDecoderBuf))
221                != NO_DECODING_ERROR) {
222            ALOGV("mp3 decoder returned error %d", decoderErr);
223
224            if (decoderErr != NO_ENOUGH_MAIN_DATA_ERROR ||
225                    mConfig->outputFrameSize == 0) {
226                ALOGE("mp3 decoder returned error %d", decoderErr);
227
228                if (mConfig->outputFrameSize == 0) {
229                    ALOGE("Output frame size is 0");
230                }
231
232                notify(OMX_EventError, OMX_ErrorUndefined, decoderErr, NULL);
233                mSignalledError = true;
234                return;
235            }
236
237            // This is recoverable, just ignore the current frame and
238            // play silence instead.
239            memset(outHeader->pBuffer,
240                   0,
241                   mConfig->outputFrameSize * sizeof(int16_t));
242
243            mConfig->inputBufferUsedLength = inHeader->nFilledLen;
244        } else if (mConfig->samplingRate != mSamplingRate
245                || mConfig->num_channels != mNumChannels) {
246            mSamplingRate = mConfig->samplingRate;
247            mNumChannels = mConfig->num_channels;
248
249            notify(OMX_EventPortSettingsChanged, 1, 0, NULL);
250            mOutputPortSettingsChange = AWAITING_DISABLED;
251            return;
252        }
253
254        outHeader->nOffset = 0;
255        outHeader->nFilledLen = mConfig->outputFrameSize * sizeof(int16_t);
256
257        outHeader->nTimeStamp =
258            mAnchorTimeUs
259                + (mNumFramesOutput * 1000000ll) / mConfig->samplingRate;
260
261        outHeader->nFlags = 0;
262
263        CHECK_GE(inHeader->nFilledLen, mConfig->inputBufferUsedLength);
264
265        inHeader->nOffset += mConfig->inputBufferUsedLength;
266        inHeader->nFilledLen -= mConfig->inputBufferUsedLength;
267
268        mNumFramesOutput += mConfig->outputFrameSize / mNumChannels;
269
270        if (inHeader->nFilledLen == 0) {
271            inInfo->mOwnedByUs = false;
272            inQueue.erase(inQueue.begin());
273            inInfo = NULL;
274            notifyEmptyBufferDone(inHeader);
275            inHeader = NULL;
276        }
277
278        outInfo->mOwnedByUs = false;
279        outQueue.erase(outQueue.begin());
280        outInfo = NULL;
281        notifyFillBufferDone(outHeader);
282        outHeader = NULL;
283    }
284}
285
286void SoftMP3::onPortFlushCompleted(OMX_U32 portIndex) {
287    if (portIndex == 0) {
288        // Make sure that the next buffer output does not still
289        // depend on fragments from the last one decoded.
290        pvmp3_InitDecoder(mConfig, mDecoderBuf);
291    }
292}
293
294void SoftMP3::onPortEnableCompleted(OMX_U32 portIndex, bool enabled) {
295    if (portIndex != 1) {
296        return;
297    }
298
299    switch (mOutputPortSettingsChange) {
300        case NONE:
301            break;
302
303        case AWAITING_DISABLED:
304        {
305            CHECK(!enabled);
306            mOutputPortSettingsChange = AWAITING_ENABLED;
307            break;
308        }
309
310        default:
311        {
312            CHECK_EQ((int)mOutputPortSettingsChange, (int)AWAITING_ENABLED);
313            CHECK(enabled);
314            mOutputPortSettingsChange = NONE;
315            break;
316        }
317    }
318}
319
320}  // namespace android
321
322android::SoftOMXComponent *createSoftOMXComponent(
323        const char *name, const OMX_CALLBACKTYPE *callbacks,
324        OMX_PTR appData, OMX_COMPONENTTYPE **component) {
325    return new android::SoftMP3(name, callbacks, appData, component);
326}
327