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 "SoftAMR"
19#include <utils/Log.h>
20
21#include "SoftAMR.h"
22
23#include "gsmamr_dec.h"
24#include "pvamrwbdecoder.h"
25
26#include <media/stagefright/foundation/ADebug.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
39SoftAMR::SoftAMR(
40        const char *name,
41        const OMX_CALLBACKTYPE *callbacks,
42        OMX_PTR appData,
43        OMX_COMPONENTTYPE **component)
44    : SimpleSoftOMXComponent(name, callbacks, appData, component),
45      mMode(MODE_NARROW),
46      mState(NULL),
47      mDecoderBuf(NULL),
48      mDecoderCookie(NULL),
49      mInputBufferCount(0),
50      mAnchorTimeUs(0),
51      mNumSamplesOutput(0),
52      mSignalledError(false),
53      mOutputPortSettingsChange(NONE) {
54    if (!strcmp(name, "OMX.google.amrwb.decoder")) {
55        mMode = MODE_WIDE;
56    } else {
57        CHECK(!strcmp(name, "OMX.google.amrnb.decoder"));
58    }
59
60    initPorts();
61    CHECK_EQ(initDecoder(), (status_t)OK);
62}
63
64SoftAMR::~SoftAMR() {
65    if (mMode == MODE_NARROW) {
66        GSMDecodeFrameExit(&mState);
67        mState = NULL;
68    } else {
69        free(mDecoderBuf);
70        mDecoderBuf = NULL;
71
72        mState = NULL;
73        mDecoderCookie = NULL;
74    }
75}
76
77void SoftAMR::initPorts() {
78    OMX_PARAM_PORTDEFINITIONTYPE def;
79    InitOMXParams(&def);
80
81    def.nPortIndex = 0;
82    def.eDir = OMX_DirInput;
83    def.nBufferCountMin = kNumBuffers;
84    def.nBufferCountActual = def.nBufferCountMin;
85    def.nBufferSize = 8192;
86    def.bEnabled = OMX_TRUE;
87    def.bPopulated = OMX_FALSE;
88    def.eDomain = OMX_PortDomainAudio;
89    def.bBuffersContiguous = OMX_FALSE;
90    def.nBufferAlignment = 1;
91
92    def.format.audio.cMIMEType =
93        mMode == MODE_NARROW
94            ? const_cast<char *>("audio/amr")
95            : const_cast<char *>("audio/amrwb");
96
97    def.format.audio.pNativeRender = NULL;
98    def.format.audio.bFlagErrorConcealment = OMX_FALSE;
99    def.format.audio.eEncoding = OMX_AUDIO_CodingAMR;
100
101    addPort(def);
102
103    def.nPortIndex = 1;
104    def.eDir = OMX_DirOutput;
105    def.nBufferCountMin = kNumBuffers;
106    def.nBufferCountActual = def.nBufferCountMin;
107
108    def.nBufferSize =
109        (mMode == MODE_NARROW ? kNumSamplesPerFrameNB : kNumSamplesPerFrameWB)
110            * sizeof(int16_t);
111
112    def.bEnabled = OMX_TRUE;
113    def.bPopulated = OMX_FALSE;
114    def.eDomain = OMX_PortDomainAudio;
115    def.bBuffersContiguous = OMX_FALSE;
116    def.nBufferAlignment = 2;
117
118    def.format.audio.cMIMEType = const_cast<char *>("audio/raw");
119    def.format.audio.pNativeRender = NULL;
120    def.format.audio.bFlagErrorConcealment = OMX_FALSE;
121    def.format.audio.eEncoding = OMX_AUDIO_CodingPCM;
122
123    addPort(def);
124}
125
126status_t SoftAMR::initDecoder() {
127    if (mMode == MODE_NARROW) {
128        Word16 err = GSMInitDecode(&mState, (Word8 *)"AMRNBDecoder");
129
130        if (err != 0) {
131            return UNKNOWN_ERROR;
132        }
133    } else {
134        int32_t memReq = pvDecoder_AmrWbMemRequirements();
135        mDecoderBuf = malloc(memReq);
136
137        pvDecoder_AmrWb_Init(&mState, mDecoderBuf, &mDecoderCookie);
138    }
139
140    return OK;
141}
142
143OMX_ERRORTYPE SoftAMR::internalGetParameter(
144        OMX_INDEXTYPE index, OMX_PTR params) {
145    switch (index) {
146        case OMX_IndexParamAudioAmr:
147        {
148            OMX_AUDIO_PARAM_AMRTYPE *amrParams =
149                (OMX_AUDIO_PARAM_AMRTYPE *)params;
150
151            if (amrParams->nPortIndex != 0) {
152                return OMX_ErrorUndefined;
153            }
154
155            amrParams->nChannels = 1;
156            amrParams->eAMRDTXMode = OMX_AUDIO_AMRDTXModeOff;
157            amrParams->eAMRFrameFormat = OMX_AUDIO_AMRFrameFormatConformance;
158
159            if (!isConfigured()) {
160                amrParams->nBitRate = 0;
161                amrParams->eAMRBandMode = OMX_AUDIO_AMRBandModeUnused;
162            } else {
163                amrParams->nBitRate = 0;
164                amrParams->eAMRBandMode =
165                    mMode == MODE_NARROW
166                        ? OMX_AUDIO_AMRBandModeNB0 : OMX_AUDIO_AMRBandModeWB0;
167            }
168
169            return OMX_ErrorNone;
170        }
171
172        case OMX_IndexParamAudioPcm:
173        {
174            OMX_AUDIO_PARAM_PCMMODETYPE *pcmParams =
175                (OMX_AUDIO_PARAM_PCMMODETYPE *)params;
176
177            if (pcmParams->nPortIndex != 1) {
178                return OMX_ErrorUndefined;
179            }
180
181            pcmParams->nChannels = 1;
182            pcmParams->eNumData = OMX_NumericalDataSigned;
183            pcmParams->eEndian = OMX_EndianBig;
184            pcmParams->bInterleaved = OMX_TRUE;
185            pcmParams->nBitPerSample = 16;
186
187            pcmParams->nSamplingRate =
188                (mMode == MODE_NARROW) ? kSampleRateNB : kSampleRateWB;
189
190            pcmParams->ePCMMode = OMX_AUDIO_PCMModeLinear;
191            pcmParams->eChannelMapping[0] = OMX_AUDIO_ChannelLF;
192            pcmParams->eChannelMapping[1] = OMX_AUDIO_ChannelRF;
193
194            return OMX_ErrorNone;
195        }
196
197        default:
198            return SimpleSoftOMXComponent::internalGetParameter(index, params);
199    }
200}
201
202OMX_ERRORTYPE SoftAMR::internalSetParameter(
203        OMX_INDEXTYPE index, const OMX_PTR params) {
204    switch (index) {
205        case OMX_IndexParamStandardComponentRole:
206        {
207            const OMX_PARAM_COMPONENTROLETYPE *roleParams =
208                (const OMX_PARAM_COMPONENTROLETYPE *)params;
209
210            if (mMode == MODE_NARROW) {
211                if (strncmp((const char *)roleParams->cRole,
212                            "audio_decoder.amrnb",
213                            OMX_MAX_STRINGNAME_SIZE - 1)) {
214                    return OMX_ErrorUndefined;
215                }
216            } else {
217                if (strncmp((const char *)roleParams->cRole,
218                            "audio_decoder.amrwb",
219                            OMX_MAX_STRINGNAME_SIZE - 1)) {
220                    return OMX_ErrorUndefined;
221                }
222            }
223
224            return OMX_ErrorNone;
225        }
226
227        case OMX_IndexParamAudioAmr:
228        {
229            const OMX_AUDIO_PARAM_AMRTYPE *aacParams =
230                (const OMX_AUDIO_PARAM_AMRTYPE *)params;
231
232            if (aacParams->nPortIndex != 0) {
233                return OMX_ErrorUndefined;
234            }
235
236            return OMX_ErrorNone;
237        }
238
239        case OMX_IndexParamAudioPcm:
240        {
241            const OMX_AUDIO_PARAM_PCMMODETYPE *pcmParams =
242                (OMX_AUDIO_PARAM_PCMMODETYPE *)params;
243
244            if (pcmParams->nPortIndex != 1) {
245                return OMX_ErrorUndefined;
246            }
247
248            return OMX_ErrorNone;
249        }
250
251        default:
252            return SimpleSoftOMXComponent::internalSetParameter(index, params);
253    }
254}
255
256bool SoftAMR::isConfigured() const {
257    return mInputBufferCount > 0;
258}
259
260static size_t getFrameSize(unsigned FT) {
261    static const size_t kFrameSizeWB[10] = {
262        132, 177, 253, 285, 317, 365, 397, 461, 477, 40
263    };
264
265    if (FT >= 10) {
266        return 1;
267    }
268
269    size_t frameSize = kFrameSizeWB[FT];
270
271    // Round up bits to bytes and add 1 for the header byte.
272    frameSize = (frameSize + 7) / 8 + 1;
273
274    return frameSize;
275}
276
277void SoftAMR::onQueueFilled(OMX_U32 portIndex) {
278    List<BufferInfo *> &inQueue = getPortQueue(0);
279    List<BufferInfo *> &outQueue = getPortQueue(1);
280
281    if (mSignalledError || mOutputPortSettingsChange != NONE) {
282        return;
283    }
284
285    while (!inQueue.empty() && !outQueue.empty()) {
286        BufferInfo *inInfo = *inQueue.begin();
287        OMX_BUFFERHEADERTYPE *inHeader = inInfo->mHeader;
288
289        BufferInfo *outInfo = *outQueue.begin();
290        OMX_BUFFERHEADERTYPE *outHeader = outInfo->mHeader;
291
292        if (inHeader->nFlags & OMX_BUFFERFLAG_EOS) {
293            inQueue.erase(inQueue.begin());
294            inInfo->mOwnedByUs = false;
295            notifyEmptyBufferDone(inHeader);
296
297            outHeader->nFilledLen = 0;
298            outHeader->nFlags = OMX_BUFFERFLAG_EOS;
299
300            outQueue.erase(outQueue.begin());
301            outInfo->mOwnedByUs = false;
302            notifyFillBufferDone(outHeader);
303            return;
304        }
305
306        if (inHeader->nOffset == 0) {
307            mAnchorTimeUs = inHeader->nTimeStamp;
308            mNumSamplesOutput = 0;
309        }
310
311        const uint8_t *inputPtr = inHeader->pBuffer + inHeader->nOffset;
312        int32_t numBytesRead;
313
314        if (mMode == MODE_NARROW) {
315            numBytesRead =
316                AMRDecode(mState,
317                  (Frame_Type_3GPP)((inputPtr[0] >> 3) & 0x0f),
318                  (UWord8 *)&inputPtr[1],
319                  reinterpret_cast<int16_t *>(outHeader->pBuffer),
320                  MIME_IETF);
321
322            if (numBytesRead == -1) {
323                ALOGE("PV AMR decoder AMRDecode() call failed");
324
325                notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL);
326                mSignalledError = true;
327
328                return;
329            }
330
331            ++numBytesRead;  // Include the frame type header byte.
332
333            if (static_cast<size_t>(numBytesRead) > inHeader->nFilledLen) {
334                // This is bad, should never have happened, but did. Abort now.
335
336                notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL);
337                mSignalledError = true;
338
339                return;
340            }
341        } else {
342            int16 mode = ((inputPtr[0] >> 3) & 0x0f);
343
344            if (mode >= 10 && mode <= 13) {
345                ALOGE("encountered illegal frame type %d in AMR WB content.",
346                      mode);
347
348                notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL);
349                mSignalledError = true;
350
351                return;
352            }
353
354            size_t frameSize = getFrameSize(mode);
355            CHECK_GE(inHeader->nFilledLen, frameSize);
356
357            int16_t *outPtr = (int16_t *)outHeader->pBuffer;
358
359            if (mode >= 9) {
360                // Produce silence instead of comfort noise and for
361                // speech lost/no data.
362                memset(outPtr, 0, kNumSamplesPerFrameWB * sizeof(int16_t));
363            } else if (mode < 9) {
364                int16 frameType;
365                RX_State_wb rx_state;
366                mime_unsorting(
367                        const_cast<uint8_t *>(&inputPtr[1]),
368                        mInputSampleBuffer,
369                        &frameType, &mode, 1, &rx_state);
370
371                int16_t numSamplesOutput;
372                pvDecoder_AmrWb(
373                        mode, mInputSampleBuffer,
374                        outPtr,
375                        &numSamplesOutput,
376                        mDecoderBuf, frameType, mDecoderCookie);
377
378                CHECK_EQ((int)numSamplesOutput, (int)kNumSamplesPerFrameWB);
379
380                for (int i = 0; i < kNumSamplesPerFrameWB; ++i) {
381                    /* Delete the 2 LSBs (14-bit output) */
382                    outPtr[i] &= 0xfffC;
383                }
384            }
385
386            numBytesRead = frameSize;
387        }
388
389        inHeader->nOffset += numBytesRead;
390        inHeader->nFilledLen -= numBytesRead;
391
392        outHeader->nFlags = 0;
393        outHeader->nOffset = 0;
394
395        if (mMode == MODE_NARROW) {
396            outHeader->nFilledLen = kNumSamplesPerFrameNB * sizeof(int16_t);
397
398            outHeader->nTimeStamp =
399                mAnchorTimeUs
400                    + (mNumSamplesOutput * 1000000ll) / kSampleRateNB;
401
402            mNumSamplesOutput += kNumSamplesPerFrameNB;
403        } else {
404            outHeader->nFilledLen = kNumSamplesPerFrameWB * sizeof(int16_t);
405
406            outHeader->nTimeStamp =
407                mAnchorTimeUs
408                    + (mNumSamplesOutput * 1000000ll) / kSampleRateWB;
409
410            mNumSamplesOutput += kNumSamplesPerFrameWB;
411        }
412
413        if (inHeader->nFilledLen == 0) {
414            inInfo->mOwnedByUs = false;
415            inQueue.erase(inQueue.begin());
416            inInfo = NULL;
417            notifyEmptyBufferDone(inHeader);
418            inHeader = NULL;
419        }
420
421        outInfo->mOwnedByUs = false;
422        outQueue.erase(outQueue.begin());
423        outInfo = NULL;
424        notifyFillBufferDone(outHeader);
425        outHeader = NULL;
426
427        ++mInputBufferCount;
428    }
429}
430
431void SoftAMR::onPortFlushCompleted(OMX_U32 portIndex) {
432}
433
434void SoftAMR::onPortEnableCompleted(OMX_U32 portIndex, bool enabled) {
435    if (portIndex != 1) {
436        return;
437    }
438
439    switch (mOutputPortSettingsChange) {
440        case NONE:
441            break;
442
443        case AWAITING_DISABLED:
444        {
445            CHECK(!enabled);
446            mOutputPortSettingsChange = AWAITING_ENABLED;
447            break;
448        }
449
450        default:
451        {
452            CHECK_EQ((int)mOutputPortSettingsChange, (int)AWAITING_ENABLED);
453            CHECK(enabled);
454            mOutputPortSettingsChange = NONE;
455            break;
456        }
457    }
458}
459
460}  // namespace android
461
462android::SoftOMXComponent *createSoftOMXComponent(
463        const char *name, const OMX_CALLBACKTYPE *callbacks,
464        OMX_PTR appData, OMX_COMPONENTTYPE **component) {
465    return new android::SoftAMR(name, callbacks, appData, component);
466}
467
468