lavd: Add QTKit input device.
Signed-off-by: Thilo Borgmann <thilo.borgmann@mail.de> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Vadim Kalinsky
Michael Niedermayer
parent
92d657b5f1
commit
234f0bcb0c
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@ -10,6 +10,7 @@ version <next>:
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- Alias PIX image encoder and decoder
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- Improvments to the BRender PIX image decoder
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- Improvments to the XBM decoder
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- QTKit input device
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version 2.2:
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@ -310,6 +310,7 @@ libavdevice
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libdc1394.c Roman Shaposhnik
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opengl_enc.c Lukasz Marek
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pulse_audio_enc.c Lukasz Marek
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qtkit.m Thilo Borgmann
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sdl Stefano Sabatini
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v4l2.c Luca Abeni
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vfwcap.c Ramiro Polla
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@ -51,6 +51,9 @@ COMPILE_HOSTC = $(call COMPILE,HOSTCC)
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%.o: %.cpp
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$(COMPILE_CXX)
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%.o: %.m
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$(COMPILE_C)
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%.s: %.c
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$(CC) $(CPPFLAGS) $(CFLAGS) -S -o $@ $<
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@ -255,6 +255,7 @@ External library support:
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--enable-opencl enable OpenCL code
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--enable-opengl enable OpenGL rendering [no]
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--enable-openssl enable openssl [no]
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--disable-qtkit disable QTKit input device support [autodetect]
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--enable-x11grab enable X11 grabbing [no]
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--disable-xlib disable xlib [autodetect]
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--disable-zlib disable zlib [autodetect]
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@ -2360,6 +2361,8 @@ oss_indev_deps_any="soundcard_h sys_soundcard_h"
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oss_outdev_deps_any="soundcard_h sys_soundcard_h"
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pulse_indev_deps="libpulse"
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pulse_outdev_deps="libpulse"
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qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
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qtkit_indev_select="qtkit"
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sdl_outdev_deps="sdl"
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sndio_indev_deps="sndio_h"
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sndio_outdev_deps="sndio_h"
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@ -4643,6 +4646,7 @@ enabled openssl && { check_lib openssl/ssl.h SSL_library_init -lssl -l
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check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
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check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
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die "ERROR: openssl not found"; }
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enabled qtkit_indev && { check_header QTKit/QTKit.h || disable qtkit_indev; }
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if enabled gnutls; then
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{ check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
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@ -531,6 +531,16 @@ Record a stream from default device:
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ffmpeg -f pulse -i default /tmp/pulse.wav
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@end example
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@section qtkit
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QTKit input device.
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The filename passed as input is unused. The default device will be chosen.
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@example
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ffmpeg -f isight -i "" out.mpg
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@end example
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@section sndio
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sndio input device.
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@ -37,6 +37,7 @@ OBJS-$(CONFIG_PULSE_INDEV) += pulse_audio_dec.o \
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pulse_audio_common.o
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OBJS-$(CONFIG_PULSE_OUTDEV) += pulse_audio_enc.o \
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pulse_audio_common.o
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OBJS-$(CONFIG_QTKIT_INDEV) += qtkit.o
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OBJS-$(CONFIG_SDL_OUTDEV) += sdl.o
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OBJS-$(CONFIG_SNDIO_INDEV) += sndio_common.o sndio_dec.o
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OBJS-$(CONFIG_SNDIO_OUTDEV) += sndio_common.o sndio_enc.o
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@ -60,6 +60,7 @@ void avdevice_register_all(void)
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REGISTER_OUTDEV (OPENGL, opengl);
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REGISTER_INOUTDEV(OSS, oss);
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REGISTER_INOUTDEV(PULSE, pulse);
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REGISTER_INDEV (QTKIT, qtkit);
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REGISTER_OUTDEV (SDL, sdl);
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REGISTER_INOUTDEV(SNDIO, sndio);
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REGISTER_INOUTDEV(V4L2, v4l2);
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@ -0,0 +1,306 @@
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/*
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* QTKit input device
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* Copyright (c) 2013 Vadim Kalinsky <vadim@kalinsky.ru>
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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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/**
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* @file
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* QTKit input device
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* @author Vadim Kalinsky <vadim@kalinsky.ru>
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*/
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#import <QTKit/QTkit.h>
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#include <pthread.h>
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#include "libavutil/pixdesc.h"
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#include "libavutil/opt.h"
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#include "libavformat/internal.h"
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#include "libavutil/internal.h"
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#include "libavutil/time.h"
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#include "avdevice.h"
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static const int kQTKitTimeBase = 100;
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static const AVRational kQTKitTimeBase_q = {
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.num = 1,
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.den = kQTKitTimeBase
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};
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typedef struct
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{
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AVClass* class;
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float frame_rate;
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int frames_captured;
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int64_t first_pts;
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pthread_mutex_t frame_lock;
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pthread_cond_t frame_wait_cond;
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id qt_delegate;
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QTCaptureSession* capture_session;
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QTCaptureDecompressedVideoOutput* video_output;
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CVImageBufferRef current_frame;
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} CaptureContext;
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static void lock_frames(CaptureContext* ctx)
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{
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pthread_mutex_lock(&ctx->frame_lock);
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}
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static void unlock_frames(CaptureContext* ctx)
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{
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pthread_mutex_unlock(&ctx->frame_lock);
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}
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/** FrameReciever class - delegate for QTCaptureSession
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*/
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@interface FFMPEG_FrameReceiver : NSObject
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{
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CaptureContext* _context;
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}
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- (id)initWithContext:(CaptureContext*)context;
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- (void)captureOutput:(QTCaptureOutput *)captureOutput
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didOutputVideoFrame:(CVImageBufferRef)videoFrame
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withSampleBuffer:(QTSampleBuffer *)sampleBuffer
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fromConnection:(QTCaptureConnection *)connection;
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@end
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@implementation FFMPEG_FrameReceiver
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- (id)initWithContext:(CaptureContext*)context
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{
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if (self = [super init]) {
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_context = context;
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}
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return self;
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}
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- (void)captureOutput:(QTCaptureOutput *)captureOutput
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didOutputVideoFrame:(CVImageBufferRef)videoFrame
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withSampleBuffer:(QTSampleBuffer *)sampleBuffer
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fromConnection:(QTCaptureConnection *)connection
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{
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lock_frames(_context);
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if (_context->current_frame != nil) {
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CVBufferRelease(_context->current_frame);
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}
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_context->current_frame = CVBufferRetain(videoFrame);
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pthread_cond_signal(&_context->frame_wait_cond);
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unlock_frames(_context);
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++_context->frames_captured;
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}
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@end
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static void destroy_context(CaptureContext* ctx)
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{
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[ctx->capture_session stopRunning];
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[ctx->capture_session release];
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[ctx->video_output release];
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[ctx->qt_delegate release];
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ctx->capture_session = NULL;
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ctx->video_output = NULL;
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ctx->qt_delegate = NULL;
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pthread_mutex_destroy(&ctx->frame_lock);
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pthread_cond_destroy(&ctx->frame_wait_cond);
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if (ctx->current_frame)
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CVBufferRelease(ctx->current_frame);
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}
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static int qtkit_read_header(AVFormatContext *s)
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{
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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CaptureContext* ctx = (CaptureContext*)s->priv_data;
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ctx->first_pts = av_gettime();
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pthread_mutex_init(&ctx->frame_lock, NULL);
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pthread_cond_init(&ctx->frame_wait_cond, NULL);
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// Find default capture device
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QTCaptureDevice *video_device = [QTCaptureDevice defaultInputDeviceWithMediaType:QTMediaTypeMuxed];
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BOOL success = [video_device open:nil];
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// Video capture device not found, looking for QTMediaTypeVideo
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if (!success) {
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video_device = [QTCaptureDevice defaultInputDeviceWithMediaType:QTMediaTypeVideo];
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success = [video_device open:nil];
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if (!success) {
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av_log(s, AV_LOG_ERROR, "No QT capture device found\n");
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goto fail;
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}
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}
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NSString* dev_display_name = [video_device localizedDisplayName];
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av_log (s, AV_LOG_DEBUG, "'%s' opened\n", [dev_display_name UTF8String]);
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// Initialize capture session
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ctx->capture_session = [[QTCaptureSession alloc] init];
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QTCaptureDeviceInput* capture_dev_input = [[[QTCaptureDeviceInput alloc] initWithDevice:video_device] autorelease];
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success = [ctx->capture_session addInput:capture_dev_input error:nil];
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if (!success) {
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av_log (s, AV_LOG_ERROR, "Failed to add QT capture device to session\n");
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goto fail;
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}
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// Attaching output
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// FIXME: Allow for a user defined pixel format
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ctx->video_output = [[QTCaptureDecompressedVideoOutput alloc] init];
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NSDictionary *captureDictionary = [NSDictionary dictionaryWithObject:
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[NSNumber numberWithUnsignedInt:kCVPixelFormatType_24RGB]
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forKey:(id)kCVPixelBufferPixelFormatTypeKey];
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[ctx->video_output setPixelBufferAttributes:captureDictionary];
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ctx->qt_delegate = [[FFMPEG_FrameReceiver alloc] initWithContext:ctx];
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[ctx->video_output setDelegate:ctx->qt_delegate];
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[ctx->video_output setAutomaticallyDropsLateVideoFrames:YES];
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[ctx->video_output setMinimumVideoFrameInterval:1.0/ctx->frame_rate];
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success = [ctx->capture_session addOutput:ctx->video_output error:nil];
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if (!success) {
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av_log (s, AV_LOG_ERROR, "can't add video output to capture session\n");
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goto fail;
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}
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[ctx->capture_session startRunning];
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// Take stream info from the first frame.
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while (ctx->frames_captured < 1) {
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CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0.1, YES);
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}
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lock_frames(ctx);
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AVStream* stream = avformat_new_stream(s, NULL);
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if (!stream) {
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goto fail;
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}
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avpriv_set_pts_info(stream, 64, 1, kQTKitTimeBase);
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stream->codec->codec_id = AV_CODEC_ID_RAWVIDEO;
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stream->codec->codec_type = AVMEDIA_TYPE_VIDEO;
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stream->codec->width = (int)CVPixelBufferGetWidth (ctx->current_frame);
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stream->codec->height = (int)CVPixelBufferGetHeight(ctx->current_frame);
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stream->codec->pix_fmt = AV_PIX_FMT_RGB24;
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CVBufferRelease(ctx->current_frame);
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ctx->current_frame = nil;
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unlock_frames(ctx);
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[pool release];
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return 0;
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fail:
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[pool release];
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destroy_context(ctx);
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return AVERROR(EIO);
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}
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static int qtkit_read_packet(AVFormatContext *s, AVPacket *pkt)
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{
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CaptureContext* ctx = (CaptureContext*)s->priv_data;
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do {
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lock_frames(ctx);
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if (ctx->current_frame != nil) {
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if (av_new_packet(pkt, (int)CVPixelBufferGetDataSize(ctx->current_frame)) < 0) {
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return AVERROR(EIO);
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}
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pkt->pts = pkt->dts = av_rescale_q(av_gettime() - ctx->first_pts, AV_TIME_BASE_Q, kQTKitTimeBase_q);
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pkt->stream_index = 0;
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pkt->flags |= AV_PKT_FLAG_KEY;
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CVPixelBufferLockBaseAddress(ctx->current_frame, 0);
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void* data = CVPixelBufferGetBaseAddress(ctx->current_frame);
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memcpy(pkt->data, data, pkt->size);
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CVPixelBufferUnlockBaseAddress(ctx->current_frame, 0);
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CVBufferRelease(ctx->current_frame);
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ctx->current_frame = nil;
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} else {
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pkt->data = NULL;
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pthread_cond_wait(&ctx->frame_wait_cond, &ctx->frame_lock);
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}
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unlock_frames(ctx);
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} while (!pkt->data);
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return 0;
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}
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static int qtkit_close(AVFormatContext *s)
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{
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CaptureContext* ctx = (CaptureContext*)s->priv_data;
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destroy_context(ctx);
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return 0;
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}
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static const AVOption options[] = {
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{ "frame_rate", "set frame rate", offsetof(CaptureContext, frame_rate), AV_OPT_TYPE_FLOAT, { .dbl = 30.0 }, 0.1, 30.0, AV_OPT_TYPE_VIDEO_RATE, NULL },
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{ NULL },
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};
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static const AVClass qtkit_class = {
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.class_name = "QTKit input device",
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.item_name = av_default_item_name,
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.option = options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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AVInputFormat ff_qtkit_demuxer = {
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.name = "qtkit",
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.long_name = NULL_IF_CONFIG_SMALL("QTKit input device"),
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.priv_data_size = sizeof(CaptureContext),
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.read_header = qtkit_read_header,
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.read_packet = qtkit_read_packet,
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.read_close = qtkit_close,
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.flags = AVFMT_NOFILE,
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.priv_class = &qtkit_class,
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};
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