mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-07 11:13:41 +02:00
4012cd6c4f
Signed-off-by: Paul B Mahol <onemda@gmail.com>
599 lines
19 KiB
C++
599 lines
19 KiB
C++
/*
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* Interface to the Android Stagefright library for
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* H/W accelerated H.264 decoding
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*
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* Copyright (C) 2011 Mohamed Naufal
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* Copyright (C) 2011 Martin Storsjö
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <binder/ProcessState.h>
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#include <media/stagefright/MetaData.h>
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#include <media/stagefright/MediaBufferGroup.h>
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#include <media/stagefright/MediaDebug.h>
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#include <media/stagefright/MediaDefs.h>
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#include <media/stagefright/OMXClient.h>
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#include <media/stagefright/OMXCodec.h>
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#include <utils/List.h>
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#include <new>
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#include <map>
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extern "C" {
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#include "avcodec.h"
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#include "libavutil/imgutils.h"
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}
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#define OMX_QCOM_COLOR_FormatYVU420SemiPlanar 0x7FA30C00
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using namespace android;
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struct Frame {
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status_t status;
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size_t size;
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int64_t time;
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int key;
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uint8_t *buffer;
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AVFrame *vframe;
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};
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struct TimeStamp {
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int64_t pts;
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int64_t reordered_opaque;
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};
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class CustomSource;
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struct StagefrightContext {
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AVCodecContext *avctx;
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AVBitStreamFilterContext *bsfc;
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uint8_t* orig_extradata;
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int orig_extradata_size;
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sp<MediaSource> *source;
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List<Frame*> *in_queue, *out_queue;
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pthread_mutex_t in_mutex, out_mutex;
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pthread_cond_t condition;
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pthread_t decode_thread_id;
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Frame *end_frame;
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bool source_done;
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volatile sig_atomic_t thread_started, thread_exited, stop_decode;
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AVFrame *prev_frame;
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std::map<int64_t, TimeStamp> *ts_map;
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int64_t frame_index;
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uint8_t *dummy_buf;
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int dummy_bufsize;
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OMXClient *client;
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sp<MediaSource> *decoder;
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const char *decoder_component;
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};
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class CustomSource : public MediaSource {
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public:
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CustomSource(AVCodecContext *avctx, sp<MetaData> meta) {
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s = (StagefrightContext*)avctx->priv_data;
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source_meta = meta;
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frame_size = (avctx->width * avctx->height * 3) / 2;
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buf_group.add_buffer(new MediaBuffer(frame_size));
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}
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virtual sp<MetaData> getFormat() {
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return source_meta;
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}
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virtual status_t start(MetaData *params) {
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return OK;
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}
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virtual status_t stop() {
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return OK;
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}
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virtual status_t read(MediaBuffer **buffer,
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const MediaSource::ReadOptions *options) {
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Frame *frame;
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status_t ret;
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if (s->thread_exited)
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return ERROR_END_OF_STREAM;
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pthread_mutex_lock(&s->in_mutex);
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while (s->in_queue->empty())
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pthread_cond_wait(&s->condition, &s->in_mutex);
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frame = *s->in_queue->begin();
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ret = frame->status;
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if (ret == OK) {
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ret = buf_group.acquire_buffer(buffer);
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if (ret == OK) {
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memcpy((*buffer)->data(), frame->buffer, frame->size);
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(*buffer)->set_range(0, frame->size);
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(*buffer)->meta_data()->clear();
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(*buffer)->meta_data()->setInt32(kKeyIsSyncFrame,frame->key);
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(*buffer)->meta_data()->setInt64(kKeyTime, frame->time);
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} else {
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av_log(s->avctx, AV_LOG_ERROR, "Failed to acquire MediaBuffer\n");
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}
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av_freep(&frame->buffer);
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}
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s->in_queue->erase(s->in_queue->begin());
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pthread_mutex_unlock(&s->in_mutex);
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av_freep(&frame);
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return ret;
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}
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private:
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MediaBufferGroup buf_group;
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sp<MetaData> source_meta;
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StagefrightContext *s;
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int frame_size;
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};
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void* decode_thread(void *arg)
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{
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AVCodecContext *avctx = (AVCodecContext*)arg;
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StagefrightContext *s = (StagefrightContext*)avctx->priv_data;
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const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(avctx->pix_fmt);
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Frame* frame;
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MediaBuffer *buffer;
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int32_t w, h;
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int decode_done = 0;
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int ret;
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int src_linesize[3];
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const uint8_t *src_data[3];
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int64_t out_frame_index = 0;
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do {
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buffer = NULL;
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frame = (Frame*)av_mallocz(sizeof(Frame));
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if (!frame) {
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frame = s->end_frame;
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frame->status = AVERROR(ENOMEM);
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decode_done = 1;
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s->end_frame = NULL;
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goto push_frame;
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}
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frame->status = (*s->decoder)->read(&buffer);
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if (frame->status == OK) {
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sp<MetaData> outFormat = (*s->decoder)->getFormat();
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outFormat->findInt32(kKeyWidth , &w);
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outFormat->findInt32(kKeyHeight, &h);
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frame->vframe = (AVFrame*)av_mallocz(sizeof(AVFrame));
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if (!frame->vframe) {
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frame->status = AVERROR(ENOMEM);
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decode_done = 1;
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buffer->release();
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goto push_frame;
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}
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ret = ff_get_buffer(avctx, frame->vframe);
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if (ret < 0) {
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av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
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frame->status = ret;
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decode_done = 1;
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buffer->release();
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goto push_frame;
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}
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// The OMX.SEC decoder doesn't signal the modified width/height
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if (s->decoder_component && !strncmp(s->decoder_component, "OMX.SEC", 7) &&
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(w & 15 || h & 15)) {
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if (((w + 15)&~15) * ((h + 15)&~15) * 3/2 == buffer->range_length()) {
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w = (w + 15)&~15;
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h = (h + 15)&~15;
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}
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}
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if (!avctx->width || !avctx->height || avctx->width > w || avctx->height > h) {
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avctx->width = w;
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avctx->height = h;
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}
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src_linesize[0] = av_image_get_linesize(avctx->pix_fmt, w, 0);
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src_linesize[1] = av_image_get_linesize(avctx->pix_fmt, w, 1);
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src_linesize[2] = av_image_get_linesize(avctx->pix_fmt, w, 2);
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src_data[0] = (uint8_t*)buffer->data();
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src_data[1] = src_data[0] + src_linesize[0] * h;
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src_data[2] = src_data[1] + src_linesize[1] * -(-h>>pix_desc->log2_chroma_h);
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av_image_copy(frame->vframe->data, frame->vframe->linesize,
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src_data, src_linesize,
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avctx->pix_fmt, avctx->width, avctx->height);
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buffer->meta_data()->findInt64(kKeyTime, &out_frame_index);
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if (out_frame_index && s->ts_map->count(out_frame_index) > 0) {
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frame->vframe->pts = (*s->ts_map)[out_frame_index].pts;
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frame->vframe->reordered_opaque = (*s->ts_map)[out_frame_index].reordered_opaque;
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s->ts_map->erase(out_frame_index);
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}
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buffer->release();
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} else if (frame->status == INFO_FORMAT_CHANGED) {
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if (buffer)
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buffer->release();
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av_free(frame);
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continue;
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} else {
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decode_done = 1;
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}
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push_frame:
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while (true) {
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pthread_mutex_lock(&s->out_mutex);
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if (s->out_queue->size() >= 10) {
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pthread_mutex_unlock(&s->out_mutex);
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usleep(10000);
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continue;
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}
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break;
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}
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s->out_queue->push_back(frame);
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pthread_mutex_unlock(&s->out_mutex);
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} while (!decode_done && !s->stop_decode);
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s->thread_exited = true;
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return 0;
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}
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static av_cold int Stagefright_init(AVCodecContext *avctx)
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{
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StagefrightContext *s = (StagefrightContext*)avctx->priv_data;
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sp<MetaData> meta, outFormat;
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int32_t colorFormat = 0;
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int ret;
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if (!avctx->extradata || !avctx->extradata_size || avctx->extradata[0] != 1)
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return -1;
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s->avctx = avctx;
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s->bsfc = av_bitstream_filter_init("h264_mp4toannexb");
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if (!s->bsfc) {
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av_log(avctx, AV_LOG_ERROR, "Cannot open the h264_mp4toannexb BSF!\n");
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return -1;
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}
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s->orig_extradata_size = avctx->extradata_size;
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s->orig_extradata = (uint8_t*) av_mallocz(avctx->extradata_size +
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FF_INPUT_BUFFER_PADDING_SIZE);
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if (!s->orig_extradata) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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memcpy(s->orig_extradata, avctx->extradata, avctx->extradata_size);
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meta = new MetaData;
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if (meta == NULL) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_AVC);
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meta->setInt32(kKeyWidth, avctx->width);
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meta->setInt32(kKeyHeight, avctx->height);
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meta->setData(kKeyAVCC, kTypeAVCC, avctx->extradata, avctx->extradata_size);
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android::ProcessState::self()->startThreadPool();
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s->source = new sp<MediaSource>();
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*s->source = new CustomSource(avctx, meta);
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s->in_queue = new List<Frame*>;
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s->out_queue = new List<Frame*>;
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s->ts_map = new std::map<int64_t, TimeStamp>;
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s->client = new OMXClient;
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s->end_frame = (Frame*)av_mallocz(sizeof(Frame));
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if (s->source == NULL || !s->in_queue || !s->out_queue || !s->client ||
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!s->ts_map || !s->end_frame) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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if (s->client->connect() != OK) {
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av_log(avctx, AV_LOG_ERROR, "Cannot connect OMX client\n");
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ret = -1;
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goto fail;
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}
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s->decoder = new sp<MediaSource>();
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*s->decoder = OMXCodec::Create(s->client->interface(), meta,
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false, *s->source, NULL,
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OMXCodec::kClientNeedsFramebuffer);
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if ((*s->decoder)->start() != OK) {
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av_log(avctx, AV_LOG_ERROR, "Cannot start decoder\n");
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ret = -1;
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s->client->disconnect();
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goto fail;
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}
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outFormat = (*s->decoder)->getFormat();
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outFormat->findInt32(kKeyColorFormat, &colorFormat);
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if (colorFormat == OMX_QCOM_COLOR_FormatYVU420SemiPlanar ||
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colorFormat == OMX_COLOR_FormatYUV420SemiPlanar)
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avctx->pix_fmt = AV_PIX_FMT_NV21;
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else if (colorFormat == OMX_COLOR_FormatYCbYCr)
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avctx->pix_fmt = AV_PIX_FMT_YUYV422;
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else if (colorFormat == OMX_COLOR_FormatCbYCrY)
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avctx->pix_fmt = AV_PIX_FMT_UYVY422;
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else
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avctx->pix_fmt = AV_PIX_FMT_YUV420P;
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outFormat->findCString(kKeyDecoderComponent, &s->decoder_component);
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if (s->decoder_component)
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s->decoder_component = av_strdup(s->decoder_component);
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pthread_mutex_init(&s->in_mutex, NULL);
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pthread_mutex_init(&s->out_mutex, NULL);
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pthread_cond_init(&s->condition, NULL);
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return 0;
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fail:
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av_bitstream_filter_close(s->bsfc);
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av_freep(&s->orig_extradata);
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av_freep(&s->end_frame);
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delete s->in_queue;
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delete s->out_queue;
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delete s->ts_map;
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delete s->client;
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return ret;
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}
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static int Stagefright_decode_frame(AVCodecContext *avctx, void *data,
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int *got_frame, AVPacket *avpkt)
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{
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StagefrightContext *s = (StagefrightContext*)avctx->priv_data;
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Frame *frame;
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status_t status;
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int orig_size = avpkt->size;
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AVPacket pkt = *avpkt;
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AVFrame *ret_frame;
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if (!s->thread_started) {
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pthread_create(&s->decode_thread_id, NULL, &decode_thread, avctx);
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s->thread_started = true;
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}
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if (avpkt && avpkt->data) {
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av_bitstream_filter_filter(s->bsfc, avctx, NULL, &pkt.data, &pkt.size,
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avpkt->data, avpkt->size, avpkt->flags & AV_PKT_FLAG_KEY);
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avpkt = &pkt;
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}
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if (!s->source_done) {
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if(!s->dummy_buf) {
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s->dummy_buf = (uint8_t*)av_malloc(avpkt->size);
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if (!s->dummy_buf)
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return AVERROR(ENOMEM);
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s->dummy_bufsize = avpkt->size;
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memcpy(s->dummy_buf, avpkt->data, avpkt->size);
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}
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frame = (Frame*)av_mallocz(sizeof(Frame));
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if (avpkt->data) {
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frame->status = OK;
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frame->size = avpkt->size;
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frame->key = avpkt->flags & AV_PKT_FLAG_KEY ? 1 : 0;
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frame->buffer = (uint8_t*)av_malloc(avpkt->size);
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if (!frame->buffer) {
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av_freep(&frame);
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return AVERROR(ENOMEM);
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}
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uint8_t *ptr = avpkt->data;
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// The OMX.SEC decoder fails without this.
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if (avpkt->size == orig_size + avctx->extradata_size) {
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ptr += avctx->extradata_size;
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frame->size = orig_size;
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}
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memcpy(frame->buffer, ptr, orig_size);
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if (avpkt == &pkt)
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av_free(avpkt->data);
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frame->time = ++s->frame_index;
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(*s->ts_map)[s->frame_index].pts = avpkt->pts;
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(*s->ts_map)[s->frame_index].reordered_opaque = avctx->reordered_opaque;
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} else {
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frame->status = ERROR_END_OF_STREAM;
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s->source_done = true;
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}
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while (true) {
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if (s->thread_exited) {
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s->source_done = true;
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break;
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}
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pthread_mutex_lock(&s->in_mutex);
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if (s->in_queue->size() >= 10) {
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pthread_mutex_unlock(&s->in_mutex);
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usleep(10000);
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continue;
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}
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s->in_queue->push_back(frame);
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pthread_cond_signal(&s->condition);
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pthread_mutex_unlock(&s->in_mutex);
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break;
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}
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}
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while (true) {
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pthread_mutex_lock(&s->out_mutex);
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if (!s->out_queue->empty()) break;
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pthread_mutex_unlock(&s->out_mutex);
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if (s->source_done) {
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usleep(10000);
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continue;
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} else {
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return orig_size;
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}
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}
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frame = *s->out_queue->begin();
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s->out_queue->erase(s->out_queue->begin());
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pthread_mutex_unlock(&s->out_mutex);
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ret_frame = frame->vframe;
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status = frame->status;
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av_freep(&frame);
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if (status == ERROR_END_OF_STREAM)
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return 0;
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if (status != OK) {
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if (status == AVERROR(ENOMEM))
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return status;
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av_log(avctx, AV_LOG_ERROR, "Decode failed: %x\n", status);
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return -1;
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}
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if (s->prev_frame) {
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avctx->release_buffer(avctx, s->prev_frame);
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av_freep(&s->prev_frame);
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}
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s->prev_frame = ret_frame;
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*got_frame = 1;
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*(AVFrame*)data = *ret_frame;
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return orig_size;
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}
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static av_cold int Stagefright_close(AVCodecContext *avctx)
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{
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StagefrightContext *s = (StagefrightContext*)avctx->priv_data;
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Frame *frame;
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if (s->thread_started) {
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if (!s->thread_exited) {
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s->stop_decode = 1;
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// Make sure decode_thread() doesn't get stuck
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pthread_mutex_lock(&s->out_mutex);
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while (!s->out_queue->empty()) {
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frame = *s->out_queue->begin();
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s->out_queue->erase(s->out_queue->begin());
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if (frame->vframe) {
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avctx->release_buffer(avctx, frame->vframe);
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av_freep(&frame->vframe);
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}
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av_freep(&frame);
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|
}
|
|
pthread_mutex_unlock(&s->out_mutex);
|
|
|
|
// Feed a dummy frame prior to signalling EOF.
|
|
// This is required to terminate the decoder(OMX.SEC)
|
|
// when only one frame is read during stream info detection.
|
|
if (s->dummy_buf && (frame = (Frame*)av_mallocz(sizeof(Frame)))) {
|
|
frame->status = OK;
|
|
frame->size = s->dummy_bufsize;
|
|
frame->key = 1;
|
|
frame->buffer = s->dummy_buf;
|
|
pthread_mutex_lock(&s->in_mutex);
|
|
s->in_queue->push_back(frame);
|
|
pthread_cond_signal(&s->condition);
|
|
pthread_mutex_unlock(&s->in_mutex);
|
|
s->dummy_buf = NULL;
|
|
}
|
|
|
|
pthread_mutex_lock(&s->in_mutex);
|
|
s->end_frame->status = ERROR_END_OF_STREAM;
|
|
s->in_queue->push_back(s->end_frame);
|
|
pthread_cond_signal(&s->condition);
|
|
pthread_mutex_unlock(&s->in_mutex);
|
|
s->end_frame = NULL;
|
|
}
|
|
|
|
pthread_join(s->decode_thread_id, NULL);
|
|
|
|
if (s->prev_frame) {
|
|
avctx->release_buffer(avctx, s->prev_frame);
|
|
av_freep(&s->prev_frame);
|
|
}
|
|
|
|
s->thread_started = false;
|
|
}
|
|
|
|
while (!s->in_queue->empty()) {
|
|
frame = *s->in_queue->begin();
|
|
s->in_queue->erase(s->in_queue->begin());
|
|
if (frame->size)
|
|
av_freep(&frame->buffer);
|
|
av_freep(&frame);
|
|
}
|
|
|
|
while (!s->out_queue->empty()) {
|
|
frame = *s->out_queue->begin();
|
|
s->out_queue->erase(s->out_queue->begin());
|
|
if (frame->vframe) {
|
|
avctx->release_buffer(avctx, frame->vframe);
|
|
av_freep(&frame->vframe);
|
|
}
|
|
av_freep(&frame);
|
|
}
|
|
|
|
(*s->decoder)->stop();
|
|
s->client->disconnect();
|
|
|
|
if (s->decoder_component)
|
|
av_freep(&s->decoder_component);
|
|
av_freep(&s->dummy_buf);
|
|
av_freep(&s->end_frame);
|
|
|
|
// Reset the extradata back to the original mp4 format, so that
|
|
// the next invocation (both when decoding and when called from
|
|
// av_find_stream_info) get the original mp4 format extradata.
|
|
av_freep(&avctx->extradata);
|
|
avctx->extradata = s->orig_extradata;
|
|
avctx->extradata_size = s->orig_extradata_size;
|
|
|
|
delete s->in_queue;
|
|
delete s->out_queue;
|
|
delete s->ts_map;
|
|
delete s->client;
|
|
delete s->decoder;
|
|
delete s->source;
|
|
|
|
pthread_mutex_destroy(&s->in_mutex);
|
|
pthread_mutex_destroy(&s->out_mutex);
|
|
pthread_cond_destroy(&s->condition);
|
|
av_bitstream_filter_close(s->bsfc);
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_libstagefright_h264_decoder = {
|
|
"libstagefright_h264",
|
|
NULL_IF_CONFIG_SMALL("libstagefright H.264"),
|
|
AVMEDIA_TYPE_VIDEO,
|
|
AV_CODEC_ID_H264,
|
|
CODEC_CAP_DELAY,
|
|
NULL, //supported_framerates
|
|
NULL, //pix_fmts
|
|
NULL, //supported_samplerates
|
|
NULL, //sample_fmts
|
|
NULL, //channel_layouts
|
|
0, //max_lowres
|
|
NULL, //priv_class
|
|
NULL, //profiles
|
|
sizeof(StagefrightContext),
|
|
NULL, //next
|
|
NULL, //init_thread_copy
|
|
NULL, //update_thread_context
|
|
NULL, //defaults
|
|
NULL, //init_static_data
|
|
Stagefright_init,
|
|
NULL, //encode
|
|
NULL, //encode2
|
|
Stagefright_decode_frame,
|
|
Stagefright_close,
|
|
};
|