error_resilience: guess_dc: check malloc failure
[ffmpeg.git] / libavcodec / libstagefright.cpp
1 /*
2  * Interface to the Android Stagefright library for
3  * H/W accelerated H.264 decoding
4  *
5  * Copyright (C) 2011 Mohamed Naufal
6  * Copyright (C) 2011 Martin Storsj√∂
7  *
8  * This file is part of FFmpeg.
9  *
10  * FFmpeg is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU Lesser General Public
12  * License as published by the Free Software Foundation; either
13  * version 2.1 of the License, or (at your option) any later version.
14  *
15  * FFmpeg is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18  * Lesser General Public License for more details.
19  *
20  * You should have received a copy of the GNU Lesser General Public
21  * License along with FFmpeg; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23  */
24
25 #include <binder/ProcessState.h>
26 #include <media/stagefright/MetaData.h>
27 #include <media/stagefright/MediaBufferGroup.h>
28 #include <media/stagefright/MediaDebug.h>
29 #include <media/stagefright/MediaDefs.h>
30 #include <media/stagefright/OMXClient.h>
31 #include <media/stagefright/OMXCodec.h>
32 #include <utils/List.h>
33 #include <new>
34 #include <map>
35
36 extern "C" {
37 #include "avcodec.h"
38 #include "libavutil/imgutils.h"
39 }
40
41 #define OMX_QCOM_COLOR_FormatYVU420SemiPlanar 0x7FA30C00
42
43 using namespace android;
44
45 struct Frame {
46     status_t status;
47     size_t size;
48     int64_t time;
49     int key;
50     uint8_t *buffer;
51     AVFrame *vframe;
52 };
53
54 struct TimeStamp {
55     int64_t pts;
56     int64_t reordered_opaque;
57 };
58
59 class CustomSource;
60
61 struct StagefrightContext {
62     AVCodecContext *avctx;
63     AVBitStreamFilterContext *bsfc;
64     uint8_t* orig_extradata;
65     int orig_extradata_size;
66     sp<MediaSource> *source;
67     List<Frame*> *in_queue, *out_queue;
68     pthread_mutex_t in_mutex, out_mutex;
69     pthread_cond_t condition;
70     pthread_t decode_thread_id;
71
72     Frame *end_frame;
73     bool source_done;
74     volatile sig_atomic_t thread_started, thread_exited, stop_decode;
75
76     AVFrame *prev_frame;
77     std::map<int64_t, TimeStamp> *ts_map;
78     int64_t frame_index;
79
80     uint8_t *dummy_buf;
81     int dummy_bufsize;
82
83     OMXClient *client;
84     sp<MediaSource> *decoder;
85     const char *decoder_component;
86 };
87
88 class CustomSource : public MediaSource {
89 public:
90     CustomSource(AVCodecContext *avctx, sp<MetaData> meta) {
91         s = (StagefrightContext*)avctx->priv_data;
92         source_meta = meta;
93         frame_size  = (avctx->width * avctx->height * 3) / 2;
94         buf_group.add_buffer(new MediaBuffer(frame_size));
95     }
96
97     virtual sp<MetaData> getFormat() {
98         return source_meta;
99     }
100
101     virtual status_t start(MetaData *params) {
102         return OK;
103     }
104
105     virtual status_t stop() {
106         return OK;
107     }
108
109     virtual status_t read(MediaBuffer **buffer,
110                           const MediaSource::ReadOptions *options) {
111         Frame *frame;
112         status_t ret;
113
114         if (s->thread_exited)
115             return ERROR_END_OF_STREAM;
116         pthread_mutex_lock(&s->in_mutex);
117
118         while (s->in_queue->empty())
119             pthread_cond_wait(&s->condition, &s->in_mutex);
120
121         frame = *s->in_queue->begin();
122         ret = frame->status;
123
124         if (ret == OK) {
125             ret = buf_group.acquire_buffer(buffer);
126             if (ret == OK) {
127                 memcpy((*buffer)->data(), frame->buffer, frame->size);
128                 (*buffer)->set_range(0, frame->size);
129                 (*buffer)->meta_data()->clear();
130                 (*buffer)->meta_data()->setInt32(kKeyIsSyncFrame,frame->key);
131                 (*buffer)->meta_data()->setInt64(kKeyTime, frame->time);
132             } else {
133                 av_log(s->avctx, AV_LOG_ERROR, "Failed to acquire MediaBuffer\n");
134             }
135             av_freep(&frame->buffer);
136         }
137
138         s->in_queue->erase(s->in_queue->begin());
139         pthread_mutex_unlock(&s->in_mutex);
140
141         av_freep(&frame);
142         return ret;
143     }
144
145 private:
146     MediaBufferGroup buf_group;
147     sp<MetaData> source_meta;
148     StagefrightContext *s;
149     int frame_size;
150 };
151
152 void* decode_thread(void *arg)
153 {
154     AVCodecContext *avctx = (AVCodecContext*)arg;
155     StagefrightContext *s = (StagefrightContext*)avctx->priv_data;
156     const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[avctx->pix_fmt];
157     Frame* frame;
158     MediaBuffer *buffer;
159     int32_t w, h;
160     int decode_done = 0;
161     int ret;
162     int src_linesize[3];
163     const uint8_t *src_data[3];
164     int64_t out_frame_index = 0;
165
166     do {
167         buffer = NULL;
168         frame = (Frame*)av_mallocz(sizeof(Frame));
169         if (!frame) {
170             frame         = s->end_frame;
171             frame->status = AVERROR(ENOMEM);
172             decode_done   = 1;
173             s->end_frame  = NULL;
174             goto push_frame;
175         }
176         frame->status = (*s->decoder)->read(&buffer);
177         if (frame->status == OK) {
178             sp<MetaData> outFormat = (*s->decoder)->getFormat();
179             outFormat->findInt32(kKeyWidth , &w);
180             outFormat->findInt32(kKeyHeight, &h);
181             frame->vframe = (AVFrame*)av_mallocz(sizeof(AVFrame));
182             if (!frame->vframe) {
183                 frame->status = AVERROR(ENOMEM);
184                 decode_done   = 1;
185                 buffer->release();
186                 goto push_frame;
187             }
188             ret = avctx->get_buffer(avctx, frame->vframe);
189             if (ret < 0) {
190                 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
191                 frame->status = ret;
192                 decode_done   = 1;
193                 buffer->release();
194                 goto push_frame;
195             }
196
197             // The OMX.SEC decoder doesn't signal the modified width/height
198             if (s->decoder_component && !strncmp(s->decoder_component, "OMX.SEC", 7) &&
199                 (w & 15 || h & 15)) {
200                 if (((w + 15)&~15) * ((h + 15)&~15) * 3/2 == buffer->range_length()) {
201                     w = (w + 15)&~15;
202                     h = (h + 15)&~15;
203                 }
204             }
205
206             if (!avctx->width || !avctx->height || avctx->width > w || avctx->height > h) {
207                 avctx->width  = w;
208                 avctx->height = h;
209             }
210
211             src_linesize[0] = av_image_get_linesize(avctx->pix_fmt, w, 0);
212             src_linesize[1] = av_image_get_linesize(avctx->pix_fmt, w, 1);
213             src_linesize[2] = av_image_get_linesize(avctx->pix_fmt, w, 2);
214
215             src_data[0] = (uint8_t*)buffer->data();
216             src_data[1] = src_data[0] + src_linesize[0] * h;
217             src_data[2] = src_data[1] + src_linesize[1] * -(-h>>pix_desc->log2_chroma_h);
218             av_image_copy(frame->vframe->data, frame->vframe->linesize,
219                           src_data, src_linesize,
220                           avctx->pix_fmt, avctx->width, avctx->height);
221
222             buffer->meta_data()->findInt64(kKeyTime, &out_frame_index);
223             if (out_frame_index && s->ts_map->count(out_frame_index) > 0) {
224                 frame->vframe->pts = (*s->ts_map)[out_frame_index].pts;
225                 frame->vframe->reordered_opaque = (*s->ts_map)[out_frame_index].reordered_opaque;
226                 s->ts_map->erase(out_frame_index);
227             }
228             buffer->release();
229             } else if (frame->status == INFO_FORMAT_CHANGED) {
230                 if (buffer)
231                     buffer->release();
232                 av_free(frame);
233                 continue;
234             } else {
235                 decode_done = 1;
236             }
237 push_frame:
238         while (true) {
239             pthread_mutex_lock(&s->out_mutex);
240             if (s->out_queue->size() >= 10) {
241                 pthread_mutex_unlock(&s->out_mutex);
242                 usleep(10000);
243                 continue;
244             }
245             break;
246         }
247         s->out_queue->push_back(frame);
248         pthread_mutex_unlock(&s->out_mutex);
249     } while (!decode_done && !s->stop_decode);
250
251     s->thread_exited = true;
252
253     return 0;
254 }
255
256 static av_cold int Stagefright_init(AVCodecContext *avctx)
257 {
258     StagefrightContext *s = (StagefrightContext*)avctx->priv_data;
259     sp<MetaData> meta, outFormat;
260     int32_t colorFormat = 0;
261     int ret;
262
263     if (!avctx->extradata || !avctx->extradata_size || avctx->extradata[0] != 1)
264         return -1;
265
266     s->avctx = avctx;
267     s->bsfc  = av_bitstream_filter_init("h264_mp4toannexb");
268     if (!s->bsfc) {
269         av_log(avctx, AV_LOG_ERROR, "Cannot open the h264_mp4toannexb BSF!\n");
270         return -1;
271     }
272
273     s->orig_extradata_size = avctx->extradata_size;
274     s->orig_extradata = (uint8_t*) av_mallocz(avctx->extradata_size +
275                                               FF_INPUT_BUFFER_PADDING_SIZE);
276     if (!s->orig_extradata) {
277         ret = AVERROR(ENOMEM);
278         goto fail;
279     }
280     memcpy(s->orig_extradata, avctx->extradata, avctx->extradata_size);
281
282     meta = new MetaData;
283     if (meta == NULL) {
284         ret = AVERROR(ENOMEM);
285         goto fail;
286     }
287     meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_AVC);
288     meta->setInt32(kKeyWidth, avctx->width);
289     meta->setInt32(kKeyHeight, avctx->height);
290     meta->setData(kKeyAVCC, kTypeAVCC, avctx->extradata, avctx->extradata_size);
291
292     android::ProcessState::self()->startThreadPool();
293
294     s->source    = new sp<MediaSource>();
295     *s->source   = new CustomSource(avctx, meta);
296     s->in_queue  = new List<Frame*>;
297     s->out_queue = new List<Frame*>;
298     s->ts_map    = new std::map<int64_t, TimeStamp>;
299     s->client    = new OMXClient;
300     s->end_frame = (Frame*)av_mallocz(sizeof(Frame));
301     if (s->source == NULL || !s->in_queue || !s->out_queue || !s->client ||
302         !s->ts_map || !s->end_frame) {
303         ret = AVERROR(ENOMEM);
304         goto fail;
305     }
306
307     if (s->client->connect() !=  OK) {
308         av_log(avctx, AV_LOG_ERROR, "Cannot connect OMX client\n");
309         ret = -1;
310         goto fail;
311     }
312
313     s->decoder  = new sp<MediaSource>();
314     *s->decoder = OMXCodec::Create(s->client->interface(), meta,
315                                   false, *s->source, NULL,
316                                   OMXCodec::kClientNeedsFramebuffer);
317     if ((*s->decoder)->start() !=  OK) {
318         av_log(avctx, AV_LOG_ERROR, "Cannot start decoder\n");
319         ret = -1;
320         s->client->disconnect();
321         goto fail;
322     }
323
324     outFormat = (*s->decoder)->getFormat();
325     outFormat->findInt32(kKeyColorFormat, &colorFormat);
326     if (colorFormat == OMX_QCOM_COLOR_FormatYVU420SemiPlanar ||
327         colorFormat == OMX_COLOR_FormatYUV420SemiPlanar)
328         avctx->pix_fmt = PIX_FMT_NV21;
329     else if (colorFormat == OMX_COLOR_FormatYCbYCr)
330         avctx->pix_fmt = PIX_FMT_YUYV422;
331     else if (colorFormat == OMX_COLOR_FormatCbYCrY)
332         avctx->pix_fmt = PIX_FMT_UYVY422;
333     else
334         avctx->pix_fmt = PIX_FMT_YUV420P;
335
336     outFormat->findCString(kKeyDecoderComponent, &s->decoder_component);
337     if (s->decoder_component)
338         s->decoder_component = av_strdup(s->decoder_component);
339
340     pthread_mutex_init(&s->in_mutex, NULL);
341     pthread_mutex_init(&s->out_mutex, NULL);
342     pthread_cond_init(&s->condition, NULL);
343     return 0;
344
345 fail:
346     av_bitstream_filter_close(s->bsfc);
347     av_freep(&s->orig_extradata);
348     av_freep(&s->end_frame);
349     delete s->in_queue;
350     delete s->out_queue;
351     delete s->ts_map;
352     delete s->client;
353     return ret;
354 }
355
356 static int Stagefright_decode_frame(AVCodecContext *avctx, void *data,
357                                     int *data_size, AVPacket *avpkt)
358 {
359     StagefrightContext *s = (StagefrightContext*)avctx->priv_data;
360     Frame *frame;
361     status_t status;
362     int orig_size = avpkt->size;
363     AVPacket pkt = *avpkt;
364     AVFrame *ret_frame;
365
366     if (!s->thread_started) {
367         pthread_create(&s->decode_thread_id, NULL, &decode_thread, avctx);
368         s->thread_started = true;
369     }
370
371     if (avpkt && avpkt->data) {
372         av_bitstream_filter_filter(s->bsfc, avctx, NULL, &pkt.data, &pkt.size,
373                                    avpkt->data, avpkt->size, avpkt->flags & AV_PKT_FLAG_KEY);
374         avpkt = &pkt;
375     }
376
377     if (!s->source_done) {
378         if(!s->dummy_buf) {
379             s->dummy_buf = (uint8_t*)av_malloc(avpkt->size);
380             if (!s->dummy_buf)
381                 return AVERROR(ENOMEM);
382             s->dummy_bufsize = avpkt->size;
383             memcpy(s->dummy_buf, avpkt->data, avpkt->size);
384         }
385
386         frame = (Frame*)av_mallocz(sizeof(Frame));
387         if (avpkt->data) {
388             frame->status  = OK;
389             frame->size    = avpkt->size;
390             frame->key     = avpkt->flags & AV_PKT_FLAG_KEY ? 1 : 0;
391             frame->buffer  = (uint8_t*)av_malloc(avpkt->size);
392             if (!frame->buffer) {
393                 av_freep(&frame);
394                 return AVERROR(ENOMEM);
395             }
396             uint8_t *ptr = avpkt->data;
397             // The OMX.SEC decoder fails without this.
398             if (avpkt->size == orig_size + avctx->extradata_size) {
399                 ptr += avctx->extradata_size;
400                 frame->size = orig_size;
401             }
402             memcpy(frame->buffer, ptr, orig_size);
403             if (avpkt == &pkt)
404                 av_free(avpkt->data);
405
406             frame->time = ++s->frame_index;
407             (*s->ts_map)[s->frame_index].pts = avpkt->pts;
408             (*s->ts_map)[s->frame_index].reordered_opaque = avctx->reordered_opaque;
409         } else {
410             frame->status  = ERROR_END_OF_STREAM;
411             s->source_done = true;
412         }
413
414         while (true) {
415             if (s->thread_exited) {
416                 s->source_done = true;
417                 break;
418             }
419             pthread_mutex_lock(&s->in_mutex);
420             if (s->in_queue->size() >= 10) {
421                 pthread_mutex_unlock(&s->in_mutex);
422                 usleep(10000);
423                 continue;
424             }
425             s->in_queue->push_back(frame);
426             pthread_cond_signal(&s->condition);
427             pthread_mutex_unlock(&s->in_mutex);
428             break;
429         }
430     }
431     while (true) {
432         pthread_mutex_lock(&s->out_mutex);
433         if (!s->out_queue->empty()) break;
434         pthread_mutex_unlock(&s->out_mutex);
435         if (s->source_done) {
436             usleep(10000);
437             continue;
438         } else {
439             return orig_size;
440         }
441     }
442
443     frame = *s->out_queue->begin();
444     s->out_queue->erase(s->out_queue->begin());
445     pthread_mutex_unlock(&s->out_mutex);
446
447     ret_frame = frame->vframe;
448     status  = frame->status;
449     av_freep(&frame);
450
451     if (status == ERROR_END_OF_STREAM)
452         return 0;
453     if (status != OK) {
454         if (status == AVERROR(ENOMEM))
455             return status;
456         av_log(avctx, AV_LOG_ERROR, "Decode failed: %x\n", status);
457         return -1;
458     }
459
460     if (s->prev_frame) {
461         avctx->release_buffer(avctx, s->prev_frame);
462         av_freep(&s->prev_frame);
463     }
464     s->prev_frame = ret_frame;
465
466     *data_size = sizeof(AVFrame);
467     *(AVFrame*)data = *ret_frame;
468     return orig_size;
469 }
470
471 static av_cold int Stagefright_close(AVCodecContext *avctx)
472 {
473     StagefrightContext *s = (StagefrightContext*)avctx->priv_data;
474     Frame *frame;
475
476     if (s->thread_started) {
477         if (!s->thread_exited) {
478             s->stop_decode = 1;
479
480             // Make sure decode_thread() doesn't get stuck
481             pthread_mutex_lock(&s->out_mutex);
482             while (!s->out_queue->empty()) {
483                 frame = *s->out_queue->begin();
484                 s->out_queue->erase(s->out_queue->begin());
485                 if (frame->vframe) {
486                     avctx->release_buffer(avctx, frame->vframe);
487                     av_freep(&frame->vframe);
488                 }
489                 av_freep(&frame);
490             }
491             pthread_mutex_unlock(&s->out_mutex);
492
493             // Feed a dummy frame prior to signalling EOF.
494             // This is required to terminate the decoder(OMX.SEC)
495             // when only one frame is read during stream info detection.
496             if (s->dummy_buf && (frame = (Frame*)av_mallocz(sizeof(Frame)))) {
497                 frame->status = OK;
498                 frame->size   = s->dummy_bufsize;
499                 frame->key    = 1;
500                 frame->buffer = s->dummy_buf;
501                 pthread_mutex_lock(&s->in_mutex);
502                 s->in_queue->push_back(frame);
503                 pthread_cond_signal(&s->condition);
504                 pthread_mutex_unlock(&s->in_mutex);
505                 s->dummy_buf = NULL;
506             }
507
508             pthread_mutex_lock(&s->in_mutex);
509             s->end_frame->status = ERROR_END_OF_STREAM;
510             s->in_queue->push_back(s->end_frame);
511             pthread_cond_signal(&s->condition);
512             pthread_mutex_unlock(&s->in_mutex);
513             s->end_frame = NULL;
514         }
515
516         pthread_join(s->decode_thread_id, NULL);
517
518         if (s->prev_frame) {
519             avctx->release_buffer(avctx, s->prev_frame);
520             av_freep(&s->prev_frame);
521         }
522
523         s->thread_started = false;
524     }
525
526     while (!s->in_queue->empty()) {
527         frame = *s->in_queue->begin();
528         s->in_queue->erase(s->in_queue->begin());
529         if (frame->size)
530             av_freep(&frame->buffer);
531         av_freep(&frame);
532     }
533
534     while (!s->out_queue->empty()) {
535         frame = *s->out_queue->begin();
536         s->out_queue->erase(s->out_queue->begin());
537         if (frame->vframe) {
538             avctx->release_buffer(avctx, frame->vframe);
539             av_freep(&frame->vframe);
540         }
541         av_freep(&frame);
542     }
543
544     (*s->decoder)->stop();
545     s->client->disconnect();
546
547     if (s->decoder_component)
548         av_freep(&s->decoder_component);
549     av_freep(&s->dummy_buf);
550     av_freep(&s->end_frame);
551
552     // Reset the extradata back to the original mp4 format, so that
553     // the next invocation (both when decoding and when called from
554     // av_find_stream_info) get the original mp4 format extradata.
555     av_freep(&avctx->extradata);
556     avctx->extradata = s->orig_extradata;
557     avctx->extradata_size = s->orig_extradata_size;
558
559     delete s->in_queue;
560     delete s->out_queue;
561     delete s->ts_map;
562     delete s->client;
563     delete s->decoder;
564     delete s->source;
565
566     pthread_mutex_destroy(&s->in_mutex);
567     pthread_mutex_destroy(&s->out_mutex);
568     pthread_cond_destroy(&s->condition);
569     av_bitstream_filter_close(s->bsfc);
570     return 0;
571 }
572
573 AVCodec ff_libstagefright_h264_decoder = {
574     "libstagefright_h264",
575     NULL_IF_CONFIG_SMALL("libstagefright H.264"),
576     AVMEDIA_TYPE_VIDEO,
577     AV_CODEC_ID_H264,
578     CODEC_CAP_DELAY,
579     NULL, //supported_framerates
580     NULL, //pix_fmts
581     NULL, //supported_samplerates
582     NULL, //sample_fmts
583     NULL, //channel_layouts
584     0,    //max_lowres
585     NULL, //priv_class
586     NULL, //profiles
587     sizeof(StagefrightContext),
588     NULL, //next
589     NULL, //init_thread_copy
590     NULL, //update_thread_context
591     NULL, //defaults
592     NULL, //init_static_data
593     Stagefright_init,
594     NULL, //encode
595     NULL, //encode2
596     Stagefright_decode_frame,
597     Stagefright_close,
598 };