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POConvert raw yuv to mp4 crashed on android
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2013-12-19T09:18:33.773
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Here is my steps: <ol> <li>Decode a jpeg file to rgb565;(Success);</li> <li>Convert rgb565 to yuv420;(Not sure if it works, function "Bitmap2Yuv420")</li> <li>Convert yuv420 to mp4. (Crash when call avcodec_open2);</li> </ol> And that is the codes: <pre><code>void ADKJpegDecoder::Bitmap2Yuv420(const char * outfilename) { unsigned char *destination = new unsigned char[m_Width * m_Height * m_BytesPerPixel / 2]; unsigned char* rgb = m_RawImage; size_t image_size = m_Width * m_Height; size_t upos = image_size; size_t vpos = upos + upos / 4; size_t i = 0; for (size_t line = 0; line < m_Height; ++line) { if (!(line % 2)) { for (size_t x = 0; x < m_Width; x += 2) { char r = rgb[3 * i]; char g = rgb[3 * i + 1]; char b = rgb[3 * i + 2]; destination[i++] = ((66 * r + 129 * g + 25 * b) >> 8) + 16; destination[upos++] = ((-38 * r + -74 * g + 112 * b) >> 8) + 128; destination[vpos++] = ((112 * r + -94 * g + -18 * b) >> 8) + 128; r = rgb[3 * i]; g = rgb[3 * i + 1]; b = rgb[3 * i + 2]; destination[i++] = ((66 * r + 129 * g + 25 * b) >> 8) + 16; } } else { for (size_t x = 0; x < m_Width; x += 1) { char r = rgb[3 * i]; char g = rgb[3 * i + 1]; char b = rgb[3 * i + 2]; destination[i++] = ((66 * r + 129 * g + 25 * b) >> 8) + 16; } } } ADKVideoEncoder::getInstance()->startEncodeVideo(destination); delete[] destination; </code></pre> } <pre><code>void ADKVideoEncoder::startEncodeVideo(unsigned char* rawDatas) { AVFormatContext* oc; AVOutputFormat* fmt; AVStream* video_st; AVCodecContext* c; double video_pts; uint8_t* video_outbuf; AVFrame* picture; int size; int ret; int video_outbuf_size; const char* filename = "/sdcard/test.mpg"; av_register_all(); fmt = av_guess_format(NULL, filename, NULL); oc = avformat_alloc_context(); oc->oformat = fmt; snprintf(oc->filename, sizeof(oc->filename), "%s", filename); video_st = NULL; if (fmt->video_codec != CODEC_ID_NONE) { video_st = av_new_stream(oc, 0); c = video_st->codec; c->codec_id = fmt->video_codec; c->codec_type = AVMEDIA_TYPE_VIDEO; c->bit_rate = 400000; c->width = 320; c->height = 480; c->time_base.num = 1; c->time_base.den = 1; c->gop_size = 12; c->pix_fmt = PIX_FMT_YUV420P; c->max_b_frames = 0; if (!strcmp(oc->oformat->name, "mp4") || !strcmp(oc->oformat->name, "mov") || !strcmp(oc->oformat->name, "3gp")) { c->flags |= CODEC_FLAG_GLOBAL_HEADER; } } av_dump_format(oc, 0, filename, 1); if (video_st) { AVCodec* codec = avcodec_find_encoder(c->codec_id); if (!codec) { return; } AVDictionary *optionsDict = NULL; if (avcodec_open2(c, codec, &optionsDict) < 0) { return; } if (!(oc->oformat->flags & AVFMT_RAWPICTURE)) { video_outbuf_size = 20000; video_outbuf = (uint8_t*) av_malloc(video_outbuf_size); } picture = avcodec_alloc_frame(); size = avpicture_get_size(c->pix_fmt, c->width, c->height); avpicture_fill((AVPicture*) picture, rawDatas, c->pix_fmt, c->width, c->height); } if (!(fmt->flags & AVFMT_NOFILE)) { if (avio_open(&oc->pb, filename, AVIO_FLAG_WRITE) < 0) { return; } } avformat_write_header(oc, 0); if (video_st) { video_pts = (double) (video_st->pts.val * video_st->time_base.num / video_st->time_base.den); } else { video_pts = 0.0; } if (!video_st/* || video_pts >= 5.0*/) { return; } c = video_st->codec; size = c->width * c->height; picture->data[0] = rawDatas; picture->data[1] = rawDatas + size; picture->data[2] = rawDatas + size * 5 / 4; if (oc->oformat->flags & AVFMT_RAWPICTURE) { AVPacket pkt; av_init_packet(&pkt); pkt.flags |= AV_PKT_FLAG_KEY; pkt.stream_index = video_st->index; pkt.data = (uint8_t*) picture; pkt.size = sizeof(AVPicture); ret = av_write_frame(oc, &pkt); } else { int out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, picture); if (out_size > 0) { AVPacket pkt; av_init_packet(&pkt); pkt.pts = av_rescale_q(c->coded_frame->pts, c->time_base, video_st->time_base); if (c->coded_frame->key_frame) { pkt.flags |= AV_PKT_FLAG_KEY; } pkt.stream_index = video_st->index; pkt.data = video_outbuf; pkt.size = out_size; ret = av_write_frame(oc, &pkt); } } if (video_st) { avcodec_close(video_st->codec); av_free(picture); av_free(video_outbuf); } av_write_trailer(oc); for (int i = 0; i < oc->nb_streams; i++) { av_freep(&oc->streams[i]->codec); av_freep(&oc->streams[i]); } if (!(fmt->flags & AVFMT_NOFILE)) { avio_close(oc->pb); } av_free(oc); </code></pre> } So can anyone find out the problem? Thanks very much!;
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<ffmpeg><yuv>
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Convert raw yuv to mp4 crashed on android
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