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backport ffmpeg fixes

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This commit is contained in:
Alexander Alekhin 2016-03-02 17:54:17 +03:00
parent 8a09d95eab
commit a61b19b524
1 changed files with 314 additions and 50 deletions
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364
modules/highgui/src/cap_ffmpeg_impl.hpp
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@ -118,11 +118,6 @@ extern "C" {
#define CV_WARN(message) fprintf(stderr, "warning: %s (%s:%d)\n", message, __FILE__, __LINE__) #define CV_WARN(message) fprintf(stderr, "warning: %s (%s:%d)\n", message, __FILE__, __LINE__)
#endif #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 ) #define CALC_FFMPEG_VERSION(a,b,c) ( a<<16 | b<<8 | c )
#if defined WIN32 || defined _WIN32 #if defined WIN32 || defined _WIN32
@ -132,6 +127,11 @@ extern "C" {
#include <stdio.h> #include <stdio.h>
#include <sys/types.h> #include <sys/types.h>
#include <sys/sysctl.h> #include <sys/sysctl.h>
#include <sys/time.h>
#if defined __APPLE__
#include <mach/clock.h>
#include <mach/mach.h>
#endif
#endif #endif
#ifndef MIN #ifndef MIN
@ -156,6 +156,155 @@ extern "C" {
# define CV_CODEC(name) name # define CV_CODEC(name) name
#endif #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) static int get_number_of_cpus(void)
{ {
#if LIBAVFORMAT_BUILD < CALC_FFMPEG_VERSION(52, 111, 0) #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) inline void _opencv_ffmpeg_free(void** ptr)
{ {
if(*ptr) free(*ptr); if(*ptr) free(*ptr);
*ptr = 0; *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 struct CvCapture_FFMPEG
{ {
@ -264,6 +437,10 @@ struct CvCapture_FFMPEG
#if LIBAVFORMAT_BUILD >= CALC_FFMPEG_VERSION(52, 111, 0) #if LIBAVFORMAT_BUILD >= CALC_FFMPEG_VERSION(52, 111, 0)
AVDictionary *dict; AVDictionary *dict;
#endif #endif
#if USE_AV_INTERRUPT_CALLBACK
AVInterruptCallbackMetadata interrupt_metadata;
#endif
}; };
void CvCapture_FFMPEG::init() void CvCapture_FFMPEG::init()
@ -301,8 +478,10 @@ void CvCapture_FFMPEG::close()
if( picture ) if( picture )
{ {
// FFmpeg and Libav added avcodec_free_frame in different versions.
#if LIBAVCODEC_BUILD >= (LIBAVCODEC_VERSION_MICRO >= 100 \ #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)) ? CALC_FFMPEG_VERSION(54, 59, 100) : CALC_FFMPEG_VERSION(54, 28, 0))
avcodec_free_frame(&picture); avcodec_free_frame(&picture);
#else #else
@ -333,11 +512,15 @@ void CvCapture_FFMPEG::close()
ic = NULL; ic = NULL;
} }
#if USE_AV_FRAME_GET_BUFFER
av_frame_unref(&rgb_picture);
#else
if( rgb_picture.data[0] ) if( rgb_picture.data[0] )
{ {
free( rgb_picture.data[0] ); free( rgb_picture.data[0] );
rgb_picture.data[0] = 0; rgb_picture.data[0] = 0;
} }
#endif
// free last packet if exist // free last packet if exist
if (packet.data) { if (packet.data) {
@ -556,6 +739,16 @@ bool CvCapture_FFMPEG::open( const char* _filename )
close(); 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) #if LIBAVFORMAT_BUILD >= CALC_FFMPEG_VERSION(52, 111, 0)
av_dict_set(&dict, "rtsp_transport", "tcp", 0); av_dict_set(&dict, "rtsp_transport", "tcp", 0);
int err = avformat_open_input(&ic, _filename, NULL, &dict); int err = avformat_open_input(&ic, _filename, NULL, &dict);
@ -619,19 +812,18 @@ bool CvCapture_FFMPEG::open( const char* _filename )
video_stream = i; video_stream = i;
video_st = ic->streams[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(); picture = avcodec_alloc_frame();
#endif
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 );
frame.width = enc->width; frame.width = enc->width;
frame.height = enc->height; frame.height = enc->height;
frame.cn = 3; frame.cn = 3;
frame.step = rgb_picture.linesize[0]; frame.step = 0;
frame.data = rgb_picture.data[0]; frame.data = NULL;
break; break;
} }
} }
@ -668,6 +860,16 @@ bool CvCapture_FFMPEG::grabFrame()
// get the next frame // get the next frame
while (!valid) 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); int ret = av_read_frame(ic, &packet);
if (ret == AVERROR(EAGAIN)) continue; 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; picture_pts = packet.pts != AV_NOPTS_VALUE_ && packet.pts != 0 ? packet.pts : packet.dts;
frame_number++; frame_number++;
valid = true; valid = true;
#if USE_AV_INTERRUPT_CALLBACK
// update interrupt value
get_monotonic_time(&interrupt_metadata.value);
#endif
} }
else else
{ {
@ -727,38 +934,59 @@ bool CvCapture_FFMPEG::retrieveFrame(int, unsigned char** data, int* step, int*
if( !video_st || !picture->data[0] ) if( !video_st || !picture->data[0] )
return false; 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 || if( img_convert_ctx == NULL ||
frame.width != video_st->codec->width || 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 ) // Some sws_scale optimizations have some assumptions about alignment of data/step/width/height
sws_freeContext(img_convert_ctx); // 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;
frame.width = video_st->codec->width;
frame.height = video_st->codec->height;
img_convert_ctx = sws_getCachedContext( img_convert_ctx = sws_getCachedContext(
NULL, img_convert_ctx,
video_st->codec->width, video_st->codec->height, buffer_width, buffer_height,
video_st->codec->pix_fmt, video_st->codec->pix_fmt,
video_st->codec->width, video_st->codec->height, buffer_width, buffer_height,
PIX_FMT_BGR24, AV_PIX_FMT_BGR24,
SWS_BICUBIC, SWS_BICUBIC,
NULL, NULL, NULL NULL, NULL, NULL
); );
if (img_convert_ctx == NULL) if (img_convert_ctx == NULL)
return false;//CV_Error(0, "Cannot initialize the conversion context!"); 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( sws_scale(
img_convert_ctx, img_convert_ctx,
picture->data, picture->data,
picture->linesize, picture->linesize,
0, video_st->codec->height, 0, video_st->codec->coded_height,
rgb_picture.data, rgb_picture.data,
rgb_picture.linesize 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; uint8_t * picture_buf;
int size; 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(); picture = avcodec_alloc_frame();
#endif
if (!picture) if (!picture)
return NULL; 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){ if(alloc){
picture_buf = (uint8_t *) malloc(size); picture_buf = (uint8_t *) malloc(size);
if (!picture_buf) if (!picture_buf)
@ -1111,7 +1349,7 @@ static AVFrame * icv_alloc_picture_FFMPEG(int pix_fmt, int width, int height, bo
return NULL; return NULL;
} }
avpicture_fill((AVPicture *)picture, picture_buf, avpicture_fill((AVPicture *)picture, picture_buf,
(PixelFormat) pix_fmt, width, height); (AVPixelFormat) pix_fmt, width, height);
} }
else { else {
} }
@ -1211,7 +1449,7 @@ static AVStream *icv_add_video_stream_FFMPEG(AVFormatContext *oc,
#endif #endif
c->gop_size = 12; /* emit one intra frame every twelve frames at most */ 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)) { if (c->codec_id == CV_CODEC(CODEC_ID_MPEG2VIDEO)) {
c->max_b_frames = 2; c->max_b_frames = 2;
@ -1372,12 +1610,12 @@ bool CvVideoWriter_FFMPEG::writeFrame( const unsigned char* data, int step, int
#endif #endif
// check parameters // check parameters
if (input_pix_fmt == PIX_FMT_BGR24) { if (input_pix_fmt == AV_PIX_FMT_BGR24) {
if (cn != 3) { if (cn != 3) {
return false; return false;
} }
} }
else if (input_pix_fmt == PIX_FMT_GRAY8) { else if (input_pix_fmt == AV_PIX_FMT_GRAY8) {
if (cn != 1) { if (cn != 1) {
return false; return false;
} }
@ -1390,13 +1628,13 @@ bool CvVideoWriter_FFMPEG::writeFrame( const unsigned char* data, int step, int
assert( input_picture ); assert( input_picture );
// let input_picture point to the raw data buffer of 'image' // let input_picture point to the raw data buffer of 'image'
avpicture_fill((AVPicture *)input_picture, (uint8_t *) data, avpicture_fill((AVPicture *)input_picture, (uint8_t *) data,
(PixelFormat)input_pix_fmt, width, height); (AVPixelFormat)input_pix_fmt, width, height);
if( !img_convert_ctx ) if( !img_convert_ctx )
{ {
img_convert_ctx = sws_getContext(width, img_convert_ctx = sws_getContext(width,
height, height,
(PixelFormat)input_pix_fmt, (AVPixelFormat)input_pix_fmt,
c->width, c->width,
c->height, c->height,
c->pix_fmt, c->pix_fmt,
@ -1414,7 +1652,7 @@ bool CvVideoWriter_FFMPEG::writeFrame( const unsigned char* data, int step, int
} }
else{ else{
avpicture_fill((AVPicture *)picture, (uint8_t *) data, avpicture_fill((AVPicture *)picture, (uint8_t *) data,
(PixelFormat)input_pix_fmt, width, height); (AVPixelFormat)input_pix_fmt, width, height);
} }
picture->pts = frame_idx; picture->pts = frame_idx;
@ -1547,10 +1785,10 @@ bool CvVideoWriter_FFMPEG::open( const char * filename, int fourcc,
/* determine optimal pixel format */ /* determine optimal pixel format */
if (is_color) { if (is_color) {
input_pix_fmt = PIX_FMT_BGR24; input_pix_fmt = AV_PIX_FMT_BGR24;
} }
else { else {
input_pix_fmt = PIX_FMT_GRAY8; input_pix_fmt = AV_PIX_FMT_GRAY8;
} }
/* Lookup codec_id for given fourcc */ /* Lookup codec_id for given fourcc */
@ -1587,21 +1825,21 @@ bool CvVideoWriter_FFMPEG::open( const char * filename, int fourcc,
break; break;
#endif #endif
case CV_CODEC(CODEC_ID_HUFFYUV): case CV_CODEC(CODEC_ID_HUFFYUV):
codec_pix_fmt = PIX_FMT_YUV422P; codec_pix_fmt = AV_PIX_FMT_YUV422P;
break; break;
case CV_CODEC(CODEC_ID_MJPEG): case CV_CODEC(CODEC_ID_MJPEG):
case CV_CODEC(CODEC_ID_LJPEG): case CV_CODEC(CODEC_ID_LJPEG):
codec_pix_fmt = PIX_FMT_YUVJ420P; codec_pix_fmt = AV_PIX_FMT_YUVJ420P;
bitrate_scale = 3; bitrate_scale = 3;
break; break;
case CV_CODEC(CODEC_ID_RAWVIDEO): case CV_CODEC(CODEC_ID_RAWVIDEO):
codec_pix_fmt = input_pix_fmt == PIX_FMT_GRAY8 || codec_pix_fmt = input_pix_fmt == AV_PIX_FMT_GRAY8 ||
input_pix_fmt == PIX_FMT_GRAY16LE || input_pix_fmt == AV_PIX_FMT_GRAY16LE ||
input_pix_fmt == PIX_FMT_GRAY16BE ? input_pix_fmt : PIX_FMT_YUV420P; input_pix_fmt == AV_PIX_FMT_GRAY16BE ? input_pix_fmt : AV_PIX_FMT_YUV420P;
break; break;
default: default:
// good for lossy formats, MPEG, etc. // good for lossy formats, MPEG, etc.
codec_pix_fmt = PIX_FMT_YUV420P; codec_pix_fmt = AV_PIX_FMT_YUV420P;
break; break;
} }
@ -1826,7 +2064,7 @@ struct OutputMediaStream_FFMPEG
void write(unsigned char* data, int size, int keyFrame); void write(unsigned char* data, int size, int keyFrame);
// add a video output stream to the container // 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_; AVOutputFormat* fmt_;
AVFormatContext* oc_; 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) #if LIBAVFORMAT_BUILD >= CALC_FFMPEG_VERSION(53, 10, 0)
AVStream* st = avformat_new_stream(oc, 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 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.. // 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; int bitrate_scale = 64;
// TODO -- safe to ignore output audio stream? // TODO -- safe to ignore output audio stream?
@ -2150,6 +2388,10 @@ private:
AVFormatContext* ctx_; AVFormatContext* ctx_;
int video_stream_id_; int video_stream_id_;
AVPacket pkt_; 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) 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; video_stream_id_ = -1;
memset(&pkt_, 0, sizeof(AVPacket)); 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) #if LIBAVFORMAT_BUILD >= CALC_FFMPEG_VERSION(53, 13, 0)
avformat_network_init(); avformat_network_init();
#endif #endif
@ -2220,15 +2472,15 @@ bool InputMediaStream_FFMPEG::open(const char* fileName, int* codec, int* chroma
switch (enc->pix_fmt) switch (enc->pix_fmt)
{ {
case PIX_FMT_YUV420P: case AV_PIX_FMT_YUV420P:
*chroma_format = ::VideoChromaFormat_YUV420; *chroma_format = ::VideoChromaFormat_YUV420;
break; break;
case PIX_FMT_YUV422P: case AV_PIX_FMT_YUV422P:
*chroma_format = ::VideoChromaFormat_YUV422; *chroma_format = ::VideoChromaFormat_YUV422;
break; break;
case PIX_FMT_YUV444P: case AV_PIX_FMT_YUV444P:
*chroma_format = ::VideoChromaFormat_YUV444; *chroma_format = ::VideoChromaFormat_YUV444;
break; break;
@ -2276,11 +2528,23 @@ bool InputMediaStream_FFMPEG::read(unsigned char** data, int* size, int* endOfFi
// get the next frame // get the next frame
for (;;) for (;;)
{ {
#if USE_AV_INTERRUPT_CALLBACK
if(interrupt_metadata.timeout)
{
break;
}
#endif
int ret = av_read_frame(ctx_, &pkt_); int ret = av_read_frame(ctx_, &pkt_);
if (ret == AVERROR(EAGAIN)) if (ret == AVERROR(EAGAIN))
continue; continue;
#if USE_AV_INTERRUPT_CALLBACK
// update interrupt value
get_monotonic_time(&interrupt_metadata.value);
#endif
if (ret < 0) if (ret < 0)
{ {
if (ret == (int)AVERROR_EOF) if (ret == (int)AVERROR_EOF)