SoftMPEG4.cpp revision d5a2f55034022f2d0425fa0701894d0c4787b726 
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 "SoftMPEG4"
19#include <utils/Log.h>
20
21#include "SoftMPEG4.h"
22
23#include <media/stagefright/foundation/ADebug.h>
24#include <media/stagefright/MediaDefs.h>
25#include <media/stagefright/MediaErrors.h>
26#include <media/IOMX.h>
27
28#include "mp4dec_api.h"
29
30namespace android {
31
32static const CodecProfileLevel kM4VProfileLevels[] = {
33    { OMX_VIDEO_MPEG4ProfileSimple, OMX_VIDEO_MPEG4Level0 },
34    { OMX_VIDEO_MPEG4ProfileSimple, OMX_VIDEO_MPEG4Level0b },
35    { OMX_VIDEO_MPEG4ProfileSimple, OMX_VIDEO_MPEG4Level1 },
36    { OMX_VIDEO_MPEG4ProfileSimple, OMX_VIDEO_MPEG4Level2 },
37    { OMX_VIDEO_MPEG4ProfileSimple, OMX_VIDEO_MPEG4Level3 },
38};
39
40static const CodecProfileLevel kH263ProfileLevels[] = {
41    { OMX_VIDEO_H263ProfileBaseline, OMX_VIDEO_H263Level10 },
42    { OMX_VIDEO_H263ProfileBaseline, OMX_VIDEO_H263Level20 },
43    { OMX_VIDEO_H263ProfileBaseline, OMX_VIDEO_H263Level30 },
44    { OMX_VIDEO_H263ProfileBaseline, OMX_VIDEO_H263Level45 },
45    { OMX_VIDEO_H263ProfileISWV2,    OMX_VIDEO_H263Level10 },
46    { OMX_VIDEO_H263ProfileISWV2,    OMX_VIDEO_H263Level20 },
47    { OMX_VIDEO_H263ProfileISWV2,    OMX_VIDEO_H263Level30 },
48    { OMX_VIDEO_H263ProfileISWV2,    OMX_VIDEO_H263Level45 },
49};
50
51SoftMPEG4::SoftMPEG4(
52        const char *name,
53        const char *componentRole,
54        OMX_VIDEO_CODINGTYPE codingType,
55        const CodecProfileLevel *profileLevels,
56        size_t numProfileLevels,
57        const OMX_CALLBACKTYPE *callbacks,
58        OMX_PTR appData,
59        OMX_COMPONENTTYPE **component)
60    : SoftVideoDecoderOMXComponent(
61            name, componentRole, codingType, profileLevels, numProfileLevels,
62            352 /* width */, 288 /* height */, callbacks, appData, component),
63      mMode(codingType == OMX_VIDEO_CodingH263 ? MODE_H263 : MODE_MPEG4),
64      mHandle(new tagvideoDecControls),
65      mInputBufferCount(0),
66      mSignalledError(false),
67      mInitialized(false),
68      mFramesConfigured(false),
69      mNumSamplesOutput(0),
70      mPvTime(0) {
71    initPorts(
72            kNumInputBuffers,
73            8192 /* inputBufferSize */,
74            kNumOutputBuffers,
75            (mMode == MODE_MPEG4)
76            ? MEDIA_MIMETYPE_VIDEO_MPEG4 : MEDIA_MIMETYPE_VIDEO_H263);
77    CHECK_EQ(initDecoder(), (status_t)OK);
78}
79
80SoftMPEG4::~SoftMPEG4() {
81    if (mInitialized) {
82        PVCleanUpVideoDecoder(mHandle);
83    }
84
85    delete mHandle;
86    mHandle = NULL;
87}
88
89status_t SoftMPEG4::initDecoder() {
90    memset(mHandle, 0, sizeof(tagvideoDecControls));
91    return OK;
92}
93
94void SoftMPEG4::onQueueFilled(OMX_U32 /* portIndex */) {
95    if (mSignalledError || mOutputPortSettingsChange != NONE) {
96        return;
97    }
98
99    List<BufferInfo *> &inQueue = getPortQueue(0);
100    List<BufferInfo *> &outQueue = getPortQueue(1);
101
102    while (!inQueue.empty() && outQueue.size() == kNumOutputBuffers) {
103        BufferInfo *inInfo = *inQueue.begin();
104        OMX_BUFFERHEADERTYPE *inHeader = inInfo->mHeader;
105
106        PortInfo *port = editPortInfo(1);
107
108        OMX_BUFFERHEADERTYPE *outHeader =
109            port->mBuffers.editItemAt(mNumSamplesOutput & 1).mHeader;
110
111        if ((inHeader->nFlags & OMX_BUFFERFLAG_EOS) && inHeader->nFilledLen == 0) {
112            inQueue.erase(inQueue.begin());
113            inInfo->mOwnedByUs = false;
114            notifyEmptyBufferDone(inHeader);
115
116            ++mInputBufferCount;
117
118            outHeader->nFilledLen = 0;
119            outHeader->nFlags = OMX_BUFFERFLAG_EOS;
120
121            List<BufferInfo *>::iterator it = outQueue.begin();
122            while ((*it)->mHeader != outHeader) {
123                ++it;
124            }
125
126            BufferInfo *outInfo = *it;
127            outInfo->mOwnedByUs = false;
128            outQueue.erase(it);
129            outInfo = NULL;
130
131            notifyFillBufferDone(outHeader);
132            outHeader = NULL;
133            return;
134        }
135
136        uint8_t *bitstream = inHeader->pBuffer + inHeader->nOffset;
137        uint32_t *start_code = (uint32_t *)bitstream;
138        bool volHeader = *start_code == 0xB0010000;
139        if (volHeader) {
140            PVCleanUpVideoDecoder(mHandle);
141            mInitialized = false;
142        }
143
144        if (!mInitialized) {
145            uint8_t *vol_data[1];
146            int32_t vol_size = 0;
147
148            vol_data[0] = NULL;
149
150            if ((inHeader->nFlags & OMX_BUFFERFLAG_CODECCONFIG) || volHeader) {
151                vol_data[0] = bitstream;
152                vol_size = inHeader->nFilledLen;
153            }
154
155            MP4DecodingMode mode =
156                (mMode == MODE_MPEG4) ? MPEG4_MODE : H263_MODE;
157
158            Bool success = PVInitVideoDecoder(
159                    mHandle, vol_data, &vol_size, 1, mWidth, mHeight, mode);
160
161            if (!success) {
162                ALOGW("PVInitVideoDecoder failed. Unsupported content?");
163
164                notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL);
165                mSignalledError = true;
166                return;
167            }
168
169            MP4DecodingMode actualMode = PVGetDecBitstreamMode(mHandle);
170            if (mode != actualMode) {
171                notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL);
172                mSignalledError = true;
173                return;
174            }
175
176            PVSetPostProcType((VideoDecControls *) mHandle, 0);
177
178            bool hasFrameData = false;
179            if (inHeader->nFlags & OMX_BUFFERFLAG_CODECCONFIG) {
180                inInfo->mOwnedByUs = false;
181                inQueue.erase(inQueue.begin());
182                inInfo = NULL;
183                notifyEmptyBufferDone(inHeader);
184                inHeader = NULL;
185            } else if (volHeader) {
186                hasFrameData = true;
187            }
188
189            mInitialized = true;
190
191            if (mode == MPEG4_MODE && handlePortSettingsChange()) {
192                return;
193            }
194
195            if (!hasFrameData) {
196                continue;
197            }
198        }
199
200        if (!mFramesConfigured) {
201            PortInfo *port = editPortInfo(1);
202            OMX_BUFFERHEADERTYPE *outHeader = port->mBuffers.editItemAt(1).mHeader;
203
204            PVSetReferenceYUV(mHandle, outHeader->pBuffer);
205
206            mFramesConfigured = true;
207        }
208
209        uint32_t useExtTimestamp = (inHeader->nOffset == 0);
210
211        // decoder deals in ms (int32_t), OMX in us (int64_t)
212        // so use fake timestamp instead
213        uint32_t timestamp = 0xFFFFFFFF;
214        if (useExtTimestamp) {
215            mPvToOmxTimeMap.add(mPvTime, inHeader->nTimeStamp);
216            timestamp = mPvTime;
217            mPvTime++;
218        }
219
220        int32_t bufferSize = inHeader->nFilledLen;
221        int32_t tmp = bufferSize;
222
223        // The PV decoder is lying to us, sometimes it'll claim to only have
224        // consumed a subset of the buffer when it clearly consumed all of it.
225        // ignore whatever it says...
226        if (PVDecodeVideoFrame(
227                    mHandle, &bitstream, &timestamp, &tmp,
228                    &useExtTimestamp,
229                    outHeader->pBuffer) != PV_TRUE) {
230            ALOGE("failed to decode video frame.");
231
232            notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL);
233            mSignalledError = true;
234            return;
235        }
236
237        // H263 doesn't have VOL header, the frame size information is in short header, i.e. the
238        // decoder may detect size change after PVDecodeVideoFrame.
239        if (handlePortSettingsChange()) {
240            return;
241        }
242
243        // decoder deals in ms, OMX in us.
244        outHeader->nTimeStamp = mPvToOmxTimeMap.valueFor(timestamp);
245        mPvToOmxTimeMap.removeItem(timestamp);
246
247        inHeader->nOffset += bufferSize;
248        inHeader->nFilledLen = 0;
249        if (inHeader->nFlags & OMX_BUFFERFLAG_EOS) {
250            outHeader->nFlags = OMX_BUFFERFLAG_EOS;
251        } else {
252            outHeader->nFlags = 0;
253        }
254
255        if (inHeader->nFilledLen == 0) {
256            inInfo->mOwnedByUs = false;
257            inQueue.erase(inQueue.begin());
258            inInfo = NULL;
259            notifyEmptyBufferDone(inHeader);
260            inHeader = NULL;
261        }
262
263        ++mInputBufferCount;
264
265        outHeader->nOffset = 0;
266        outHeader->nFilledLen = (mWidth * mHeight * 3) / 2;
267
268        List<BufferInfo *>::iterator it = outQueue.begin();
269        while ((*it)->mHeader != outHeader) {
270            ++it;
271        }
272
273        BufferInfo *outInfo = *it;
274        outInfo->mOwnedByUs = false;
275        outQueue.erase(it);
276        outInfo = NULL;
277
278        notifyFillBufferDone(outHeader);
279        outHeader = NULL;
280
281        ++mNumSamplesOutput;
282    }
283}
284
285bool SoftMPEG4::handlePortSettingsChange() {
286    uint32_t disp_width, disp_height;
287    PVGetVideoDimensions(mHandle, (int32 *)&disp_width, (int32 *)&disp_height);
288
289    uint32_t buf_width, buf_height;
290    PVGetBufferDimensions(mHandle, (int32 *)&buf_width, (int32 *)&buf_height);
291
292    CHECK_LE(disp_width, buf_width);
293    CHECK_LE(disp_height, buf_height);
294
295    ALOGV("disp_width = %d, disp_height = %d, buf_width = %d, buf_height = %d",
296            disp_width, disp_height, buf_width, buf_height);
297
298    CropSettingsMode cropSettingsMode = kCropUnSet;
299    if (disp_width != buf_width || disp_height != buf_height) {
300        cropSettingsMode = kCropSet;
301
302        if (mCropWidth != disp_width || mCropHeight != disp_height) {
303            mCropLeft = 0;
304            mCropTop = 0;
305            mCropWidth = disp_width;
306            mCropHeight = disp_height;
307            cropSettingsMode = kCropChanged;
308        }
309    }
310
311    bool portWillReset = false;
312    const bool fakeStride = true;
313    SoftVideoDecoderOMXComponent::handlePortSettingsChange(
314            &portWillReset, buf_width, buf_height, cropSettingsMode, fakeStride);
315    if (portWillReset) {
316        if (mMode == MODE_H263) {
317            PVCleanUpVideoDecoder(mHandle);
318
319            uint8_t *vol_data[1];
320            int32_t vol_size = 0;
321
322            vol_data[0] = NULL;
323            if (!PVInitVideoDecoder(
324                    mHandle, vol_data, &vol_size, 1, mWidth, mHeight,
325                    H263_MODE)) {
326                notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL);
327                mSignalledError = true;
328                return true;
329            }
330        }
331
332        mFramesConfigured = false;
333    }
334
335    return portWillReset;
336}
337
338void SoftMPEG4::onPortFlushCompleted(OMX_U32 portIndex) {
339    if (portIndex == 0 && mInitialized) {
340        CHECK_EQ((int)PVResetVideoDecoder(mHandle), (int)PV_TRUE);
341    }
342}
343
344void SoftMPEG4::onReset() {
345    SoftVideoDecoderOMXComponent::onReset();
346    mPvToOmxTimeMap.clear();
347    mSignalledError = false;
348    mFramesConfigured = false;
349    if (mInitialized) {
350        PVCleanUpVideoDecoder(mHandle);
351        mInitialized = false;
352    }
353}
354
355void SoftMPEG4::updatePortDefinitions() {
356    SoftVideoDecoderOMXComponent::updatePortDefinitions();
357
358    /* We have to align our width and height - this should affect stride! */
359    OMX_PARAM_PORTDEFINITIONTYPE *def = &editPortInfo(kOutputPortIndex)->mDef;
360    def->nBufferSize =
361        (((def->format.video.nFrameWidth + 15) & -16)
362            * ((def->format.video.nFrameHeight + 15) & -16) * 3) / 2;
363}
364
365}  // namespace android
366
367android::SoftOMXComponent *createSoftOMXComponent(
368        const char *name, const OMX_CALLBACKTYPE *callbacks,
369        OMX_PTR appData, OMX_COMPONENTTYPE **component) {
370    using namespace android;
371    if (!strcmp(name, "OMX.google.h263.decoder")) {
372        return new android::SoftMPEG4(
373                name, "video_decoder.h263", OMX_VIDEO_CodingH263,
374                kH263ProfileLevels, ARRAY_SIZE(kH263ProfileLevels),
375                callbacks, appData, component);
376    } else if (!strcmp(name, "OMX.google.mpeg4.decoder")) {
377        return new android::SoftMPEG4(
378                name, "video_decoder.mpeg4", OMX_VIDEO_CodingMPEG4,
379                kM4VProfileLevels, ARRAY_SIZE(kM4VProfileLevels),
380                callbacks, appData, component);
381    } else {
382        CHECK(!"Unknown component");
383    }
384}
385
386