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|
CMFCApplication1Dlg *pDlg = (CMFCApplication1Dlg *)carg;
int64_t timeBase;
char src_filename[180];
int refcount = 0;
int video_stream_idx = -1;
int audio_stream_idx = -1;
AVCodecContext *video_dec_ctx = NULL;
AVStream *video_stream = NULL;
AVFormatContext *fmt_ctx = NULL;
int ret;
strcpy_s(src_filename, 180, "rtsp://service:CyresCenco1*@172.26.48.202/rtsp_tunnel");
//strcpy_s(src_filename, 180, "c:\\temp\\Test.avi");
/* open input file, and allocate format context */
//int ret = avformat_open_input(&fmt_ctx, "c:\\temp\\Test.avi", NULL, NULL);
ret = avformat_open_input(&fmt_ctx, src_filename, NULL, NULL);
if (ret < 0)
{
return -1;
}
ret = avformat_find_stream_info(fmt_ctx, NULL);
if (ret < 0)
{
return -1;
}
int stream_index;
AVStream *st;
AVCodec *dec = NULL;
AVDictionary *opts = NULL;
ret = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
if (ret < 0)
{
return -1;
}
else
{
stream_index = ret;
st = fmt_ctx->streams[stream_index];
/* find decoder for the stream */
dec = avcodec_find_decoder(st->codecpar->codec_id);
if (!dec)
{
return -1;
}
/* Allocate a codec context for the decoder */
video_dec_ctx = avcodec_alloc_context3(dec);
if (!video_dec_ctx)
{
return -1;
}
/* Copy codec parameters from input stream to output codec context */
if ((ret = avcodec_parameters_to_context(video_dec_ctx, st->codecpar)) < 0)
{
fprintf(stderr, "Failed to copy %s codec parameters to decoder context\n",
av_get_media_type_string(AVMEDIA_TYPE_VIDEO));
return -1;
}
/* Init the decoders, with or without reference counting */
av_dict_set(&opts, "refcounted_frames", refcount ? "1" : "0", 0);
if ((ret = avcodec_open2(video_dec_ctx, dec, &opts)) < 0)
{
return -1;
}
video_stream_idx = stream_index;
}
video_stream = fmt_ctx->streams[video_stream_idx];
/*FILE *video_dst_file = fopen("d:\\temp\\ocack.avi", "wb");
if (!video_dst_file)
{
return -1;
}*/
/* allocate image where the decoded image will be put */
int width_src, height_src;
enum AVPixelFormat pix_fmt_src, pix_fmt_dst;
uint8_t *video_tmp_data[4] = { NULL };
int video_tmp_linesize[4];
uint8_t *video_dst_data[4] = { NULL };
int video_dst_linesize[4];
width_src = video_dec_ctx->width;
height_src = video_dec_ctx->height;
pix_fmt_src = video_dec_ctx->pix_fmt;
pix_fmt_dst = AV_PIX_FMT_RGB24;
//AfxMessageBox(av_get_pix_fmt_name(pix_fmt_dst));
ret = av_image_alloc(video_tmp_data, video_tmp_linesize,
width_src, height_src, pix_fmt_src, 1);
ret = av_image_alloc(video_dst_data, video_dst_linesize,
width_src, height_src, pix_fmt_dst /* pix_fmt_src */, 1);
if (ret < 0)
{
return -1;
}
int video_dst_bufsize = ret;
av_dump_format(fmt_ctx, 0, src_filename, 0);
if (!video_stream)
{
return -1;
}
AVFrame *frame;
frame = av_frame_alloc();
if (!frame)
{
return -1;
}
/* initialize packet, set data to NULL, let the demuxer fill it */
AVPacket pkt;
av_init_packet(&pkt);
pkt.data = NULL;
pkt.size = 0;
int got_frame;
int width_dst = width_src / 3;
int height_dst = height_src / 3;
SwsContext *img_convert_ctx = sws_getContext(width_src, height_src, pix_fmt_src, width_dst, height_dst, AV_PIX_FMT_RGB24, SWS_BICUBIC, NULL, NULL, NULL);
CDC *pDC = pDlg->GetDC();
HDC hDC = *pDC;
HDC hDCMem = CreateCompatibleDC(hDC);
BYTE* pbmpData = NULL;
BITMAPINFO bmi = { 0 };
bmi.bmiHeader.biBitCount = 24;
bmi.bmiHeader.biCompression = BI_RGB;
bmi.bmiHeader.biHeight = -height_src;
bmi.bmiHeader.biWidth = width_src;
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi.bmiHeader.biSizeImage = height_src * width_src * 3;
hbmp = CreateDIBSection(hDCMem, &bmi, DIB_RGB_COLORS, (LPVOID *)&pbmpData, NULL, 0);
timeBase = (int64_t(video_dec_ctx->time_base.num) * AV_TIME_BASE) / int64_t(video_dec_ctx->time_base.den);
int cmpFrame = 1;
int64_t seekTarget = int64_t(cmpFrame) * timeBase;
/* read frames from the file */
while (av_read_frame(fmt_ctx, &pkt) >= 0)
{
cmpFrame = cmpFrame + 5;
seekTarget = int64_t(cmpFrame) * timeBase;
AVPacket orig_pkt = pkt;
do
{
got_frame = 0;
ret = avcodec_decode_video2(video_dec_ctx, frame, &got_frame, &pkt);
if (ret < 0)
{
return -1;
}
if (got_frame)
{
if (frame->width != width_src || frame->height != height_src ||
frame->format != pix_fmt_src)
{
return -1;
}
}
av_image_copy(video_tmp_data, video_tmp_linesize,
(const uint8_t **)(frame->data), frame->linesize,
pix_fmt_src, width_src, height_src);
sws_scale(img_convert_ctx, video_tmp_data, video_tmp_linesize, 0, height_src, video_dst_data, video_dst_linesize);
EnterCriticalSection(&csBitMap);
video_dst_data[0] = (uint8_t*)pbmpData;
video_dst_linesize[0] = width_src * 3;
SelectObject(hDCMem, hbmp);
BitBlt(hDC, 0, 0, width_src, height_src, hDCMem, 0, 0, SRCCOPY);
//pDlg->m_BMP.SetBitmap(hbmp);
LeaveCriticalSection(&csBitMap);
//fwrite(video_dst_data[0], 1, video_dst_bufsize, video_dst_file);
if (ret < 0)
break;
pkt.data += ret;
pkt.size -= ret;
} while (pkt.size > 0);
av_packet_unref(&orig_pkt);
}
char Output[200];
sprintf(Output, "Play the output video file with the command:\n"
"ffplay -f rawvideo -pix_fmt %s -video_size %dx%d\n",
av_get_pix_fmt_name(pix_fmt_src), width_src, height_src); |
