--- /dev/null
+From a61b19b524cd2b66a7c43e67edd7cc780bf46cbb Mon Sep 17 00:00:00 2001
+From: Alexander Alekhin <alexander.alekhin@itseez.com>
+Date: Wed, 2 Mar 2016 17:54:17 +0300
+Subject: [PATCH] backport ffmpeg fixes
+
+Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
+Downloaded from upstream commit:
+https://github.com/Itseez/opencv/commit/a61b19b524cd2b66a7c43e67edd7cc780bf46cbb
+---
+ modules/highgui/src/cap_ffmpeg_impl.hpp | 364 +++++++++++++++++++++++++++-----
+ 1 file changed, 314 insertions(+), 50 deletions(-)
+
+diff --git a/modules/highgui/src/cap_ffmpeg_impl.hpp b/modules/highgui/src/cap_ffmpeg_impl.hpp
+index 1b79870..6df542a 100644
+--- a/modules/highgui/src/cap_ffmpeg_impl.hpp
++++ b/modules/highgui/src/cap_ffmpeg_impl.hpp
+@@ -118,11 +118,6 @@ extern "C" {
+ #define CV_WARN(message) fprintf(stderr, "warning: %s (%s:%d)\n", message, __FILE__, __LINE__)
+ #endif
+
+-/* PIX_FMT_RGBA32 macro changed in newer ffmpeg versions */
+-#ifndef PIX_FMT_RGBA32
+-#define PIX_FMT_RGBA32 PIX_FMT_RGB32
+-#endif
+-
+ #define CALC_FFMPEG_VERSION(a,b,c) ( a<<16 | b<<8 | c )
+
+ #if defined WIN32 || defined _WIN32
+@@ -132,6 +127,11 @@ extern "C" {
+ #include <stdio.h>
+ #include <sys/types.h>
+ #include <sys/sysctl.h>
++ #include <sys/time.h>
++#if defined __APPLE__
++ #include <mach/clock.h>
++ #include <mach/mach.h>
++#endif
+ #endif
+
+ #ifndef MIN
+@@ -156,6 +156,155 @@ extern "C" {
+ # define CV_CODEC(name) name
+ #endif
+
++#if LIBAVUTIL_BUILD < (LIBAVUTIL_VERSION_MICRO >= 100 \
++ ? CALC_FFMPEG_VERSION(51, 74, 100) : CALC_FFMPEG_VERSION(51, 42, 0))
++#define AVPixelFormat PixelFormat
++#define AV_PIX_FMT_BGR24 PIX_FMT_BGR24
++#define AV_PIX_FMT_RGB24 PIX_FMT_RGB24
++#define AV_PIX_FMT_GRAY8 PIX_FMT_GRAY8
++#define AV_PIX_FMT_YUV422P PIX_FMT_YUV422P
++#define AV_PIX_FMT_YUV420P PIX_FMT_YUV420P
++#define AV_PIX_FMT_YUV444P PIX_FMT_YUV444P
++#define AV_PIX_FMT_YUVJ420P PIX_FMT_YUVJ420P
++#define AV_PIX_FMT_GRAY16LE PIX_FMT_GRAY16LE
++#define AV_PIX_FMT_GRAY16BE PIX_FMT_GRAY16BE
++#endif
++
++#if LIBAVUTIL_BUILD >= (LIBAVUTIL_VERSION_MICRO >= 100 \
++ ? CALC_FFMPEG_VERSION(52, 38, 100) : CALC_FFMPEG_VERSION(52, 13, 0))
++#define USE_AV_FRAME_GET_BUFFER 1
++#else
++#define USE_AV_FRAME_GET_BUFFER 0
++#ifndef AV_NUM_DATA_POINTERS // required for 0.7.x/0.8.x ffmpeg releases
++#define AV_NUM_DATA_POINTERS 4
++#endif
++#endif
++
++
++#ifndef USE_AV_INTERRUPT_CALLBACK
++#if LIBAVFORMAT_BUILD >= CALC_FFMPEG_VERSION(53, 21, 0)
++#define USE_AV_INTERRUPT_CALLBACK 1
++#else
++#define USE_AV_INTERRUPT_CALLBACK 0
++#endif
++#endif
++
++#if USE_AV_INTERRUPT_CALLBACK
++#define LIBAVFORMAT_INTERRUPT_TIMEOUT_MS 30000
++
++#ifdef WIN32
++// http://stackoverflow.com/questions/5404277/porting-clock-gettime-to-windows
++
++static
++inline LARGE_INTEGER get_filetime_offset()
++{
++ SYSTEMTIME s;
++ FILETIME f;
++ LARGE_INTEGER t;
++
++ s.wYear = 1970;
++ s.wMonth = 1;
++ s.wDay = 1;
++ s.wHour = 0;
++ s.wMinute = 0;
++ s.wSecond = 0;
++ s.wMilliseconds = 0;
++ SystemTimeToFileTime(&s, &f);
++ t.QuadPart = f.dwHighDateTime;
++ t.QuadPart <<= 32;
++ t.QuadPart |= f.dwLowDateTime;
++ return t;
++}
++
++static
++inline void get_monotonic_time(timespec *tv)
++{
++ LARGE_INTEGER t;
++ FILETIME f;
++ double microseconds;
++ static LARGE_INTEGER offset;
++ static double frequencyToMicroseconds;
++ static int initialized = 0;
++ static BOOL usePerformanceCounter = 0;
++
++ if (!initialized)
++ {
++ LARGE_INTEGER performanceFrequency;
++ initialized = 1;
++ usePerformanceCounter = QueryPerformanceFrequency(&performanceFrequency);
++ if (usePerformanceCounter)
++ {
++ QueryPerformanceCounter(&offset);
++ frequencyToMicroseconds = (double)performanceFrequency.QuadPart / 1000000.;
++ }
++ else
++ {
++ offset = get_filetime_offset();
++ frequencyToMicroseconds = 10.;
++ }
++ }
++
++ if (usePerformanceCounter)
++ {
++ QueryPerformanceCounter(&t);
++ } else {
++ GetSystemTimeAsFileTime(&f);
++ t.QuadPart = f.dwHighDateTime;
++ t.QuadPart <<= 32;
++ t.QuadPart |= f.dwLowDateTime;
++ }
++
++ t.QuadPart -= offset.QuadPart;
++ microseconds = (double)t.QuadPart / frequencyToMicroseconds;
++ t.QuadPart = microseconds;
++ tv->tv_sec = t.QuadPart / 1000000;
++ tv->tv_nsec = (t.QuadPart % 1000000) * 1000;
++}
++#else
++static
++inline void get_monotonic_time(timespec *time)
++{
++#if defined(__APPLE__) && defined(__MACH__)
++ clock_serv_t cclock;
++ mach_timespec_t mts;
++ host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
++ clock_get_time(cclock, &mts);
++ mach_port_deallocate(mach_task_self(), cclock);
++ time->tv_sec = mts.tv_sec;
++ time->tv_nsec = mts.tv_nsec;
++#else
++ clock_gettime(CLOCK_MONOTONIC, time);
++#endif
++}
++#endif
++
++static
++inline timespec get_monotonic_time_diff(timespec start, timespec end)
++{
++ timespec temp;
++ if (end.tv_nsec - start.tv_nsec < 0)
++ {
++ temp.tv_sec = end.tv_sec - start.tv_sec - 1;
++ temp.tv_nsec = 1000000000 + end.tv_nsec - start.tv_nsec;
++ }
++ else
++ {
++ temp.tv_sec = end.tv_sec - start.tv_sec;
++ temp.tv_nsec = end.tv_nsec - start.tv_nsec;
++ }
++ return temp;
++}
++
++static
++inline double get_monotonic_time_diff_ms(timespec time1, timespec time2)
++{
++ timespec delta = get_monotonic_time_diff(time1, time2);
++ double milliseconds = delta.tv_sec * 1000 + (double)delta.tv_nsec / 1000000.0;
++
++ return milliseconds;
++}
++#endif // USE_AV_INTERRUPT_CALLBACK
++
+ static int get_number_of_cpus(void)
+ {
+ #if LIBAVFORMAT_BUILD < CALC_FFMPEG_VERSION(52, 111, 0)
+@@ -205,12 +354,36 @@ struct Image_FFMPEG
+ };
+
+
++#if USE_AV_INTERRUPT_CALLBACK
++struct AVInterruptCallbackMetadata
++{
++ timespec value;
++ unsigned int timeout_after_ms;
++ int timeout;
++};
++
++static
+ inline void _opencv_ffmpeg_free(void** ptr)
+ {
+ if(*ptr) free(*ptr);
+ *ptr = 0;
+ }
+
++static
++inline int _opencv_ffmpeg_interrupt_callback(void *ptr)
++{
++ AVInterruptCallbackMetadata* metadata = (AVInterruptCallbackMetadata*)ptr;
++ assert(metadata);
++
++ timespec now;
++ get_monotonic_time(&now);
++
++ metadata->timeout = get_monotonic_time_diff_ms(metadata->value, now) > metadata->timeout_after_ms;
++
++ return metadata->timeout ? -1 : 0;
++}
++#endif
++
+
+ struct CvCapture_FFMPEG
+ {
+@@ -264,6 +437,10 @@ struct CvCapture_FFMPEG
+ #if LIBAVFORMAT_BUILD >= CALC_FFMPEG_VERSION(52, 111, 0)
+ AVDictionary *dict;
+ #endif
++
++#if USE_AV_INTERRUPT_CALLBACK
++ AVInterruptCallbackMetadata interrupt_metadata;
++#endif
+ };
+
+ void CvCapture_FFMPEG::init()
+@@ -301,8 +478,10 @@ void CvCapture_FFMPEG::close()
+
+ if( picture )
+ {
+- // FFmpeg and Libav added avcodec_free_frame in different versions.
+ #if LIBAVCODEC_BUILD >= (LIBAVCODEC_VERSION_MICRO >= 100 \
++ ? CALC_FFMPEG_VERSION(55, 45, 101) : CALC_FFMPEG_VERSION(55, 28, 1))
++ av_frame_free(&picture);
++#elif LIBAVCODEC_BUILD >= (LIBAVCODEC_VERSION_MICRO >= 100 \
+ ? CALC_FFMPEG_VERSION(54, 59, 100) : CALC_FFMPEG_VERSION(54, 28, 0))
+ avcodec_free_frame(&picture);
+ #else
+@@ -333,11 +512,15 @@ void CvCapture_FFMPEG::close()
+ ic = NULL;
+ }
+
++#if USE_AV_FRAME_GET_BUFFER
++ av_frame_unref(&rgb_picture);
++#else
+ if( rgb_picture.data[0] )
+ {
+ free( rgb_picture.data[0] );
+ rgb_picture.data[0] = 0;
+ }
++#endif
+
+ // free last packet if exist
+ if (packet.data) {
+@@ -556,6 +739,16 @@ bool CvCapture_FFMPEG::open( const char* _filename )
+
+ close();
+
++#if USE_AV_INTERRUPT_CALLBACK
++ /* interrupt callback */
++ interrupt_metadata.timeout_after_ms = LIBAVFORMAT_INTERRUPT_TIMEOUT_MS;
++ get_monotonic_time(&interrupt_metadata.value);
++
++ ic = avformat_alloc_context();
++ ic->interrupt_callback.callback = _opencv_ffmpeg_interrupt_callback;
++ ic->interrupt_callback.opaque = &interrupt_metadata;
++#endif
++
+ #if LIBAVFORMAT_BUILD >= CALC_FFMPEG_VERSION(52, 111, 0)
+ av_dict_set(&dict, "rtsp_transport", "tcp", 0);
+ int err = avformat_open_input(&ic, _filename, NULL, &dict);
+@@ -619,19 +812,18 @@ bool CvCapture_FFMPEG::open( const char* _filename )
+
+ video_stream = i;
+ video_st = ic->streams[i];
++#if LIBAVCODEC_BUILD >= (LIBAVCODEC_VERSION_MICRO >= 100 \
++ ? CALC_FFMPEG_VERSION(55, 45, 101) : CALC_FFMPEG_VERSION(55, 28, 1))
++ picture = av_frame_alloc();
++#else
+ picture = avcodec_alloc_frame();
+-
+- rgb_picture.data[0] = (uint8_t*)malloc(
+- avpicture_get_size( PIX_FMT_BGR24,
+- enc->width, enc->height ));
+- avpicture_fill( (AVPicture*)&rgb_picture, rgb_picture.data[0],
+- PIX_FMT_BGR24, enc->width, enc->height );
++#endif
+
+ frame.width = enc->width;
+ frame.height = enc->height;
+ frame.cn = 3;
+- frame.step = rgb_picture.linesize[0];
+- frame.data = rgb_picture.data[0];
++ frame.step = 0;
++ frame.data = NULL;
+ break;
+ }
+ }
+@@ -668,6 +860,16 @@ bool CvCapture_FFMPEG::grabFrame()
+ // get the next frame
+ while (!valid)
+ {
++ av_free_packet (&packet);
++
++#if USE_AV_INTERRUPT_CALLBACK
++ if (interrupt_metadata.timeout)
++ {
++ valid = false;
++ break;
++ }
++#endif
++
+ int ret = av_read_frame(ic, &packet);
+ if (ret == AVERROR(EAGAIN)) continue;
+
+@@ -703,6 +905,11 @@ bool CvCapture_FFMPEG::grabFrame()
+ picture_pts = packet.pts != AV_NOPTS_VALUE_ && packet.pts != 0 ? packet.pts : packet.dts;
+ frame_number++;
+ valid = true;
++
++#if USE_AV_INTERRUPT_CALLBACK
++ // update interrupt value
++ get_monotonic_time(&interrupt_metadata.value);
++#endif
+ }
+ else
+ {
+@@ -727,38 +934,59 @@ bool CvCapture_FFMPEG::retrieveFrame(int, unsigned char** data, int* step, int*
+ if( !video_st || !picture->data[0] )
+ return false;
+
+- avpicture_fill((AVPicture*)&rgb_picture, rgb_picture.data[0], PIX_FMT_RGB24,
+- video_st->codec->width, video_st->codec->height);
+-
+ if( img_convert_ctx == NULL ||
+ frame.width != video_st->codec->width ||
+- frame.height != video_st->codec->height )
++ frame.height != video_st->codec->height ||
++ frame.data == NULL )
+ {
+- if( img_convert_ctx )
+- sws_freeContext(img_convert_ctx);
+-
+- frame.width = video_st->codec->width;
+- frame.height = video_st->codec->height;
++ // Some sws_scale optimizations have some assumptions about alignment of data/step/width/height
++ // Also we use coded_width/height to workaround problem with legacy ffmpeg versions (like n0.8)
++ int buffer_width = video_st->codec->coded_width, buffer_height = video_st->codec->coded_height;
+
+ img_convert_ctx = sws_getCachedContext(
+- NULL,
+- video_st->codec->width, video_st->codec->height,
++ img_convert_ctx,
++ buffer_width, buffer_height,
+ video_st->codec->pix_fmt,
+- video_st->codec->width, video_st->codec->height,
+- PIX_FMT_BGR24,
++ buffer_width, buffer_height,
++ AV_PIX_FMT_BGR24,
+ SWS_BICUBIC,
+ NULL, NULL, NULL
+ );
+
+ if (img_convert_ctx == NULL)
+ return false;//CV_Error(0, "Cannot initialize the conversion context!");
++
++#if USE_AV_FRAME_GET_BUFFER
++ av_frame_unref(&rgb_picture);
++ rgb_picture.format = AV_PIX_FMT_BGR24;
++ rgb_picture.width = buffer_width;
++ rgb_picture.height = buffer_height;
++ if (0 != av_frame_get_buffer(&rgb_picture, 32))
++ {
++ CV_WARN("OutOfMemory");
++ return false;
++ }
++#else
++ int aligns[AV_NUM_DATA_POINTERS];
++ avcodec_align_dimensions2(video_st->codec, &buffer_width, &buffer_height, aligns);
++ rgb_picture.data[0] = (uint8_t*)realloc(rgb_picture.data[0],
++ avpicture_get_size( AV_PIX_FMT_BGR24,
++ buffer_width, buffer_height ));
++ avpicture_fill( (AVPicture*)&rgb_picture, rgb_picture.data[0],
++ AV_PIX_FMT_BGR24, buffer_width, buffer_height );
++#endif
++ frame.width = video_st->codec->width;
++ frame.height = video_st->codec->height;
++ frame.cn = 3;
++ frame.data = rgb_picture.data[0];
++ frame.step = rgb_picture.linesize[0];
+ }
+
+ sws_scale(
+ img_convert_ctx,
+ picture->data,
+ picture->linesize,
+- 0, video_st->codec->height,
++ 0, video_st->codec->coded_height,
+ rgb_picture.data,
+ rgb_picture.linesize
+ );
+@@ -1099,10 +1327,20 @@ static AVFrame * icv_alloc_picture_FFMPEG(int pix_fmt, int width, int height, bo
+ uint8_t * picture_buf;
+ int size;
+
++#if LIBAVCODEC_BUILD >= (LIBAVCODEC_VERSION_MICRO >= 100 \
++ ? CALC_FFMPEG_VERSION(55, 45, 101) : CALC_FFMPEG_VERSION(55, 28, 1))
++ picture = av_frame_alloc();
++#else
+ picture = avcodec_alloc_frame();
++#endif
+ if (!picture)
+ return NULL;
+- size = avpicture_get_size( (PixelFormat) pix_fmt, width, height);
++
++ picture->format = pix_fmt;
++ picture->width = width;
++ picture->height = height;
++
++ size = avpicture_get_size( (AVPixelFormat) pix_fmt, width, height);
+ if(alloc){
+ picture_buf = (uint8_t *) malloc(size);
+ if (!picture_buf)
+@@ -1111,7 +1349,7 @@ static AVFrame * icv_alloc_picture_FFMPEG(int pix_fmt, int width, int height, bo
+ return NULL;
+ }
+ avpicture_fill((AVPicture *)picture, picture_buf,
+- (PixelFormat) pix_fmt, width, height);
++ (AVPixelFormat) pix_fmt, width, height);
+ }
+ else {
+ }
+@@ -1211,7 +1449,7 @@ static AVStream *icv_add_video_stream_FFMPEG(AVFormatContext *oc,
+ #endif
+
+ c->gop_size = 12; /* emit one intra frame every twelve frames at most */
+- c->pix_fmt = (PixelFormat) pixel_format;
++ c->pix_fmt = (AVPixelFormat) pixel_format;
+
+ if (c->codec_id == CV_CODEC(CODEC_ID_MPEG2VIDEO)) {
+ c->max_b_frames = 2;
+@@ -1372,12 +1610,12 @@ bool CvVideoWriter_FFMPEG::writeFrame( const unsigned char* data, int step, int
+ #endif
+
+ // check parameters
+- if (input_pix_fmt == PIX_FMT_BGR24) {
++ if (input_pix_fmt == AV_PIX_FMT_BGR24) {
+ if (cn != 3) {
+ return false;
+ }
+ }
+- else if (input_pix_fmt == PIX_FMT_GRAY8) {
++ else if (input_pix_fmt == AV_PIX_FMT_GRAY8) {
+ if (cn != 1) {
+ return false;
+ }
+@@ -1390,13 +1628,13 @@ bool CvVideoWriter_FFMPEG::writeFrame( const unsigned char* data, int step, int
+ assert( input_picture );
+ // let input_picture point to the raw data buffer of 'image'
+ avpicture_fill((AVPicture *)input_picture, (uint8_t *) data,
+- (PixelFormat)input_pix_fmt, width, height);
++ (AVPixelFormat)input_pix_fmt, width, height);
+
+ if( !img_convert_ctx )
+ {
+ img_convert_ctx = sws_getContext(width,
+ height,
+- (PixelFormat)input_pix_fmt,
++ (AVPixelFormat)input_pix_fmt,
+ c->width,
+ c->height,
+ c->pix_fmt,
+@@ -1414,7 +1652,7 @@ bool CvVideoWriter_FFMPEG::writeFrame( const unsigned char* data, int step, int
+ }
+ else{
+ avpicture_fill((AVPicture *)picture, (uint8_t *) data,
+- (PixelFormat)input_pix_fmt, width, height);
++ (AVPixelFormat)input_pix_fmt, width, height);
+ }
+
+ picture->pts = frame_idx;
+@@ -1547,10 +1785,10 @@ bool CvVideoWriter_FFMPEG::open( const char * filename, int fourcc,
+
+ /* determine optimal pixel format */
+ if (is_color) {
+- input_pix_fmt = PIX_FMT_BGR24;
++ input_pix_fmt = AV_PIX_FMT_BGR24;
+ }
+ else {
+- input_pix_fmt = PIX_FMT_GRAY8;
++ input_pix_fmt = AV_PIX_FMT_GRAY8;
+ }
+
+ /* Lookup codec_id for given fourcc */
+@@ -1587,21 +1825,21 @@ bool CvVideoWriter_FFMPEG::open( const char * filename, int fourcc,
+ break;
+ #endif
+ case CV_CODEC(CODEC_ID_HUFFYUV):
+- codec_pix_fmt = PIX_FMT_YUV422P;
++ codec_pix_fmt = AV_PIX_FMT_YUV422P;
+ break;
+ case CV_CODEC(CODEC_ID_MJPEG):
+ case CV_CODEC(CODEC_ID_LJPEG):
+- codec_pix_fmt = PIX_FMT_YUVJ420P;
++ codec_pix_fmt = AV_PIX_FMT_YUVJ420P;
+ bitrate_scale = 3;
+ break;
+ case CV_CODEC(CODEC_ID_RAWVIDEO):
+- codec_pix_fmt = input_pix_fmt == PIX_FMT_GRAY8 ||
+- input_pix_fmt == PIX_FMT_GRAY16LE ||
+- input_pix_fmt == PIX_FMT_GRAY16BE ? input_pix_fmt : PIX_FMT_YUV420P;
++ codec_pix_fmt = input_pix_fmt == AV_PIX_FMT_GRAY8 ||
++ input_pix_fmt == AV_PIX_FMT_GRAY16LE ||
++ input_pix_fmt == AV_PIX_FMT_GRAY16BE ? input_pix_fmt : AV_PIX_FMT_YUV420P;
+ break;
+ default:
+ // good for lossy formats, MPEG, etc.
+- codec_pix_fmt = PIX_FMT_YUV420P;
++ codec_pix_fmt = AV_PIX_FMT_YUV420P;
+ break;
+ }
+
+@@ -1826,7 +2064,7 @@ struct OutputMediaStream_FFMPEG
+ void write(unsigned char* data, int size, int keyFrame);
+
+ // add a video output stream to the container
+- static AVStream* addVideoStream(AVFormatContext *oc, CV_CODEC_ID codec_id, int w, int h, int bitrate, double fps, PixelFormat pixel_format);
++ static AVStream* addVideoStream(AVFormatContext *oc, CV_CODEC_ID codec_id, int w, int h, int bitrate, double fps, AVPixelFormat pixel_format);
+
+ AVOutputFormat* fmt_;
+ AVFormatContext* oc_;
+@@ -1873,7 +2111,7 @@ void OutputMediaStream_FFMPEG::close()
+ }
+ }
+
+-AVStream* OutputMediaStream_FFMPEG::addVideoStream(AVFormatContext *oc, CV_CODEC_ID codec_id, int w, int h, int bitrate, double fps, PixelFormat pixel_format)
++AVStream* OutputMediaStream_FFMPEG::addVideoStream(AVFormatContext *oc, CV_CODEC_ID codec_id, int w, int h, int bitrate, double fps, AVPixelFormat pixel_format)
+ {
+ #if LIBAVFORMAT_BUILD >= CALC_FFMPEG_VERSION(53, 10, 0)
+ AVStream* st = avformat_new_stream(oc, 0);
+@@ -2011,7 +2249,7 @@ bool OutputMediaStream_FFMPEG::open(const char* fileName, int width, int height,
+ oc_->max_delay = (int)(0.7 * AV_TIME_BASE); // This reduces buffer underrun warnings with MPEG
+
+ // set a few optimal pixel formats for lossless codecs of interest..
+- PixelFormat codec_pix_fmt = PIX_FMT_YUV420P;
++ AVPixelFormat codec_pix_fmt = AV_PIX_FMT_YUV420P;
+ int bitrate_scale = 64;
+
+ // TODO -- safe to ignore output audio stream?
+@@ -2150,6 +2388,10 @@ struct InputMediaStream_FFMPEG
+ AVFormatContext* ctx_;
+ int video_stream_id_;
+ AVPacket pkt_;
++
++#if USE_AV_INTERRUPT_CALLBACK
++ AVInterruptCallbackMetadata interrupt_metadata;
++#endif
+ };
+
+ bool InputMediaStream_FFMPEG::open(const char* fileName, int* codec, int* chroma_format, int* width, int* height)
+@@ -2160,6 +2402,16 @@ bool InputMediaStream_FFMPEG::open(const char* fileName, int* codec, int* chroma
+ video_stream_id_ = -1;
+ memset(&pkt_, 0, sizeof(AVPacket));
+
++#if USE_AV_INTERRUPT_CALLBACK
++ /* interrupt callback */
++ interrupt_metadata.timeout_after_ms = LIBAVFORMAT_INTERRUPT_TIMEOUT_MS;
++ get_monotonic_time(&interrupt_metadata.value);
++
++ ctx_ = avformat_alloc_context();
++ ctx_->interrupt_callback.callback = _opencv_ffmpeg_interrupt_callback;
++ ctx_->interrupt_callback.opaque = &interrupt_metadata;
++#endif
++
+ #if LIBAVFORMAT_BUILD >= CALC_FFMPEG_VERSION(53, 13, 0)
+ avformat_network_init();
+ #endif
+@@ -2220,15 +2472,15 @@ bool InputMediaStream_FFMPEG::open(const char* fileName, int* codec, int* chroma
+
+ switch (enc->pix_fmt)
+ {
+- case PIX_FMT_YUV420P:
++ case AV_PIX_FMT_YUV420P:
+ *chroma_format = ::VideoChromaFormat_YUV420;
+ break;
+
+- case PIX_FMT_YUV422P:
++ case AV_PIX_FMT_YUV422P:
+ *chroma_format = ::VideoChromaFormat_YUV422;
+ break;
+
+- case PIX_FMT_YUV444P:
++ case AV_PIX_FMT_YUV444P:
+ *chroma_format = ::VideoChromaFormat_YUV444;
+ break;
+
+@@ -2276,11 +2528,23 @@ bool InputMediaStream_FFMPEG::read(unsigned char** data, int* size, int* endOfFi
+ // get the next frame
+ for (;;)
+ {
++#if USE_AV_INTERRUPT_CALLBACK
++ if(interrupt_metadata.timeout)
++ {
++ break;
++ }
++#endif
++
+ int ret = av_read_frame(ctx_, &pkt_);
+
+ if (ret == AVERROR(EAGAIN))
+ continue;
+
++#if USE_AV_INTERRUPT_CALLBACK
++ // update interrupt value
++ get_monotonic_time(&interrupt_metadata.value);
++#endif
++
+ if (ret < 0)
+ {
+ if (ret == (int)AVERROR_EOF)
+++ /dev/null
-From eceada586bbf18fc267e437522ec4f1f23ddc656 Mon Sep 17 00:00:00 2001
-From: Samuel Martin <s.martin49@gmail.com>
-Date: Fri, 3 Oct 2014 00:32:40 +0200
-Subject: [PATCH] cmake/OpenCVGenPkgconfig.cmake: rework opencv.pc generation
-
-Using absolute path to locate the components in the "Libs:" field of the
-*.pc can badly break cross-compilation, especially when building
-statically linked objects.
-
-Indeed, pkg-config automatically replaces the '-I...' and '-L...' paths
-when the PKG_CONFIG_SYSROOT_DIR and PKG_CONFIG_LIBDIR environment
-variables are set [1]. This feature is very helpful and common in
-cross-compilation framework like Buildroot [2,3].
-
-When there are absolute paths in the *.pc files, pkg-config won't be
-able to do the path substitions for these paths when the afromentioned
-environment variables are set.
-In such case, since the prefix is the target one, not the sysroot one,
-these libraries' abolute paths will point to:
-- in the best case: a non-existing file (i.e. these files do not exists
- on the host system;
-- at worst: the host system's libraries. This will make the linking
- failed because these host system's libraries will most likely not be
- build for the target architecture [4].
-
-So, this patch replace the components' absolute paths by the form:
- -L<libdir> -l<libname>
-
-This way, the linker will be able to resolve each dependency path,
-whatever the kind of objects/build (shared object or static build) it
-is dealing with.
-
-Note that for static link, the library order does matter [5]. The order
-of the opencv components has been carefully chosen to comply with this
-requirement.
-
-Fixes #3931
-
-[1] http://linux.die.net/man/1/pkg-config
-[2] http://buildroot.org/
-[3] http://git.buildroot.net/buildroot/tree/package/pkgconf/pkg-config.in
-[4] http://autobuild.buildroot.net/results/e8a/e8a859276db34aff87ef181b0cce98916b0afc90/build-end.log
-[5] http://stackoverflow.com/questions/45135/linker-order-gcc
-
-Signed-off-by: Samuel Martin <s.martin49@gmail.com>
-
----
-Note: this patch properly applies on top of the master branch, though it
- has been written on top of the 2.4 branch.
----
- cmake/OpenCVGenPkgconfig.cmake | 64 +++++++++++++++++++++++++++---------------
- 1 file changed, 42 insertions(+), 22 deletions(-)
-
-diff --git a/cmake/OpenCVGenPkgconfig.cmake b/cmake/OpenCVGenPkgconfig.cmake
-index fa57db9..183c56d 100644
---- a/cmake/OpenCVGenPkgconfig.cmake
-+++ b/cmake/OpenCVGenPkgconfig.cmake
-@@ -8,10 +8,6 @@
- #
- # ${BIN_DIR}/unix-install/opencv.pc -> For use *with* "make install"
- # -------------------------------------------------------------------------------------------
--set(prefix "${CMAKE_INSTALL_PREFIX}")
--set(exec_prefix "\${prefix}")
--set(libdir "") #TODO: need link paths for OpenCV_EXTRA_COMPONENTS
--set(includedir "\${prefix}/${OPENCV_INCLUDE_INSTALL_PATH}")
-
- if(CMAKE_BUILD_TYPE MATCHES "Release")
- set(ocv_optkind OPT)
-@@ -35,42 +31,66 @@ ocv_list_reverse(OpenCV_LIB_COMPONENTS)
- ocv_list_reverse(OpenCV_EXTRA_COMPONENTS)
-
- #build the list of components
--set(OpenCV_LIB_COMPONENTS_ "")
--foreach(CVLib ${OpenCV_LIB_COMPONENTS})
-- get_target_property(libpath ${CVLib} LOCATION_${CMAKE_BUILD_TYPE})
-- get_filename_component(libname "${libpath}" NAME)
-
-- if(INSTALL_TO_MANGLED_PATHS)
-- set(libname "${libname}.${OPENCV_VERSION}")
-- endif()
-+# Note:
-+# when linking against static libraries, if libfoo depends on libbar, then
-+# libfoo must come first in the linker flags.
-+
-+# world is a special target whose library should come first, especially for
-+# static link.
-+if(OpenCV_LIB_COMPONENTS MATCHES "opencv_world")
-+ list(REMOVE_ITEM OpenCV_LIB_COMPONENTS "opencv_world")
-+ list(INSERT OpenCV_LIB_COMPONENTS 0 "opencv_world")
-+endif()
-+
-+set(OpenCV_LIB_COMPONENTS_)
-+foreach(CVLib ${OpenCV_LIB_COMPONENTS})
-
-- #need better solution....
-- if(libpath MATCHES "3rdparty")
-- set(installDir "share/OpenCV/3rdparty/${OPENCV_LIB_INSTALL_PATH}")
-+ get_target_property(libloc ${CVLib} LOCATION_${CMAKE_BUILD_TYPE})
-+ if(libloc MATCHES "3rdparty")
-+ set(libpath "\${exec_prefix}/share/OpenCV/3rdparty/${OPENCV_LIB_INSTALL_PATH}")
- else()
-- set(installDir "${OPENCV_LIB_INSTALL_PATH}")
-+ set(libpath "\${exec_prefix}/${OPENCV_LIB_INSTALL_PATH}")
- endif()
-+ list(APPEND OpenCV_LIB_COMPONENTS_ "-L${libpath}")
-+
-+ get_filename_component(libname ${CVLib} NAME_WE)
-+ string(REGEX REPLACE "^lib" "" libname "${libname}")
-+ list(APPEND OpenCV_LIB_COMPONENTS_ "-l${libname}")
-
-- set(OpenCV_LIB_COMPONENTS_ "${OpenCV_LIB_COMPONENTS_} \${exec_prefix}/${installDir}/${libname}")
- endforeach()
-
- # add extra dependencies required for OpenCV
--set(OpenCV_LIB_COMPONENTS ${OpenCV_LIB_COMPONENTS_})
- if(OpenCV_EXTRA_COMPONENTS)
- foreach(extra_component ${OpenCV_EXTRA_COMPONENTS})
-
-- if(extra_component MATCHES "^-[lL]" OR extra_component MATCHES "[\\/]")
-- set(maybe_l_prefix "")
-+ if(extra_component MATCHES "^-[lL]")
-+ set(libprefix "")
-+ set(libname "${extra_component}")
-+ elseif(extra_component MATCHES "[\\/]")
-+ get_filename_component(libdir "${extra_component}" PATH)
-+ list(APPEND OpenCV_LIB_COMPONENTS_ "-L${libdir}")
-+ get_filename_component(libname "${extra_component}" NAME_WE)
-+ string(REGEX REPLACE "^lib" "" libname "${libname}")
-+ set(libprefix "-l")
- else()
-- set(maybe_l_prefix "-l")
-+ set(libprefix "-l")
-+ set(libname "${extra_component}")
- endif()
--
-- set(OpenCV_LIB_COMPONENTS "${OpenCV_LIB_COMPONENTS} ${maybe_l_prefix}${extra_component}")
-+ list(APPEND OpenCV_LIB_COMPONENTS_ "${libprefix}${libname}")
-
- endforeach()
- endif()
-
-+list(REMOVE_DUPLICATES OpenCV_LIB_COMPONENTS_)
-+string(REPLACE ";" " " OpenCV_LIB_COMPONENTS "${OpenCV_LIB_COMPONENTS_}")
-+
- #generate the .pc file
-+set(prefix "${CMAKE_INSTALL_PREFIX}")
-+set(exec_prefix "\${prefix}")
-+set(libdir "\${exec_prefix}/${OPENCV_LIB_INSTALL_PATH}")
-+set(includedir "\${prefix}/${OPENCV_INCLUDE_INSTALL_PATH}")
-+
- if(INSTALL_TO_MANGLED_PATHS)
- set(OPENCV_PC_FILE_NAME "opencv-${OPENCV_VERSION}.pc")
- else()
---
-2.4.1
-
projects / buildroot.git / commitdiff