mirror of https://github.com/FFmpeg/FFmpeg.git
QTKit has been deprecated in favor of AVFoundation for years, and we have an avfoundation input device. See https://developer.apple.com/documentation/qtkitpull/269/head
Clément Bœsch
7 years ago
parent
833a38dbe5
commit
ca7dc3ee90
7 changed files with 1 additions and 412 deletions
@ -1,362 +0,0 @@ |
|||||||
/* |
|
||||||
* QTKit input device |
|
||||||
* Copyright (c) 2013 Vadim Kalinsky <vadim@kalinsky.ru> |
|
||||||
* |
|
||||||
* This file is part of FFmpeg. |
|
||||||
* |
|
||||||
* FFmpeg is free software; you can redistribute it and/or |
|
||||||
* modify it under the terms of the GNU Lesser General Public |
|
||||||
* License as published by the Free Software Foundation; either |
|
||||||
* version 2.1 of the License, or (at your option) any later version. |
|
||||||
* |
|
||||||
* FFmpeg is distributed in the hope that it will be useful, |
|
||||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
||||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
||||||
* Lesser General Public License for more details. |
|
||||||
* |
|
||||||
* You should have received a copy of the GNU Lesser General Public |
|
||||||
* License along with FFmpeg; if not, write to the Free Software |
|
||||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
||||||
*/ |
|
||||||
|
|
||||||
/** |
|
||||||
* @file |
|
||||||
* QTKit input device |
|
||||||
* @author Vadim Kalinsky <vadim@kalinsky.ru> |
|
||||||
*/ |
|
||||||
|
|
||||||
#if defined(__clang__) |
|
||||||
#pragma clang diagnostic ignored "-Wdeprecated-declarations" |
|
||||||
#endif |
|
||||||
|
|
||||||
#import <QTKit/QTKit.h> |
|
||||||
#include <pthread.h> |
|
||||||
|
|
||||||
#include "libavutil/pixdesc.h" |
|
||||||
#include "libavutil/opt.h" |
|
||||||
#include "libavformat/internal.h" |
|
||||||
#include "libavutil/internal.h" |
|
||||||
#include "libavutil/time.h" |
|
||||||
#include "avdevice.h" |
|
||||||
|
|
||||||
#define QTKIT_TIMEBASE 100 |
|
||||||
|
|
||||||
static const AVRational kQTKitTimeBase_q = { |
|
||||||
.num = 1, |
|
||||||
.den = QTKIT_TIMEBASE |
|
||||||
}; |
|
||||||
|
|
||||||
typedef struct |
|
||||||
{ |
|
||||||
AVClass* class; |
|
||||||
|
|
||||||
float frame_rate; |
|
||||||
int frames_captured; |
|
||||||
int64_t first_pts; |
|
||||||
pthread_mutex_t frame_lock; |
|
||||||
pthread_cond_t frame_wait_cond; |
|
||||||
id qt_delegate; |
|
||||||
|
|
||||||
int list_devices; |
|
||||||
int video_device_index; |
|
||||||
|
|
||||||
QTCaptureSession* capture_session; |
|
||||||
QTCaptureDecompressedVideoOutput* video_output; |
|
||||||
CVImageBufferRef current_frame; |
|
||||||
} CaptureContext; |
|
||||||
|
|
||||||
static void lock_frames(CaptureContext* ctx) |
|
||||||
{ |
|
||||||
pthread_mutex_lock(&ctx->frame_lock); |
|
||||||
} |
|
||||||
|
|
||||||
static void unlock_frames(CaptureContext* ctx) |
|
||||||
{ |
|
||||||
pthread_mutex_unlock(&ctx->frame_lock); |
|
||||||
} |
|
||||||
|
|
||||||
/** FrameReciever class - delegate for QTCaptureSession |
|
||||||
*/ |
|
||||||
@interface FFMPEG_FrameReceiver : NSObject |
|
||||||
{ |
|
||||||
CaptureContext* _context; |
|
||||||
} |
|
||||||
|
|
||||||
- (id)initWithContext:(CaptureContext*)context; |
|
||||||
|
|
||||||
- (void)captureOutput:(QTCaptureOutput *)captureOutput |
|
||||||
didOutputVideoFrame:(CVImageBufferRef)videoFrame |
|
||||||
withSampleBuffer:(QTSampleBuffer *)sampleBuffer |
|
||||||
fromConnection:(QTCaptureConnection *)connection; |
|
||||||
|
|
||||||
@end |
|
||||||
|
|
||||||
@implementation FFMPEG_FrameReceiver |
|
||||||
|
|
||||||
- (id)initWithContext:(CaptureContext*)context |
|
||||||
{ |
|
||||||
if (self = [super init]) { |
|
||||||
_context = context; |
|
||||||
} |
|
||||||
return self; |
|
||||||
} |
|
||||||
|
|
||||||
- (void)captureOutput:(QTCaptureOutput *)captureOutput |
|
||||||
didOutputVideoFrame:(CVImageBufferRef)videoFrame |
|
||||||
withSampleBuffer:(QTSampleBuffer *)sampleBuffer |
|
||||||
fromConnection:(QTCaptureConnection *)connection |
|
||||||
{ |
|
||||||
lock_frames(_context); |
|
||||||
if (_context->current_frame != nil) { |
|
||||||
CVBufferRelease(_context->current_frame); |
|
||||||
} |
|
||||||
|
|
||||||
_context->current_frame = CVBufferRetain(videoFrame); |
|
||||||
|
|
||||||
pthread_cond_signal(&_context->frame_wait_cond); |
|
||||||
|
|
||||||
unlock_frames(_context); |
|
||||||
|
|
||||||
++_context->frames_captured; |
|
||||||
} |
|
||||||
|
|
||||||
@end |
|
||||||
|
|
||||||
static void destroy_context(CaptureContext* ctx) |
|
||||||
{ |
|
||||||
[ctx->capture_session stopRunning]; |
|
||||||
|
|
||||||
[ctx->capture_session release]; |
|
||||||
[ctx->video_output release]; |
|
||||||
[ctx->qt_delegate release]; |
|
||||||
|
|
||||||
ctx->capture_session = NULL; |
|
||||||
ctx->video_output = NULL; |
|
||||||
ctx->qt_delegate = NULL; |
|
||||||
|
|
||||||
pthread_mutex_destroy(&ctx->frame_lock); |
|
||||||
pthread_cond_destroy(&ctx->frame_wait_cond); |
|
||||||
|
|
||||||
if (ctx->current_frame) |
|
||||||
CVBufferRelease(ctx->current_frame); |
|
||||||
} |
|
||||||
|
|
||||||
static int qtkit_read_header(AVFormatContext *s) |
|
||||||
{ |
|
||||||
NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init]; |
|
||||||
|
|
||||||
CaptureContext* ctx = (CaptureContext*)s->priv_data; |
|
||||||
|
|
||||||
ctx->first_pts = av_gettime(); |
|
||||||
|
|
||||||
pthread_mutex_init(&ctx->frame_lock, NULL); |
|
||||||
pthread_cond_init(&ctx->frame_wait_cond, NULL); |
|
||||||
|
|
||||||
// List devices if requested |
|
||||||
if (ctx->list_devices) { |
|
||||||
av_log(ctx, AV_LOG_INFO, "QTKit video devices:\n"); |
|
||||||
NSArray *devices = [QTCaptureDevice inputDevicesWithMediaType:QTMediaTypeVideo]; |
|
||||||
for (QTCaptureDevice *device in devices) { |
|
||||||
const char *name = [[device localizedDisplayName] UTF8String]; |
|
||||||
int index = [devices indexOfObject:device]; |
|
||||||
av_log(ctx, AV_LOG_INFO, "[%d] %s\n", index, name); |
|
||||||
} |
|
||||||
goto fail; |
|
||||||
} |
|
||||||
|
|
||||||
// Find capture device |
|
||||||
QTCaptureDevice *video_device = nil; |
|
||||||
|
|
||||||
// check for device index given in filename |
|
||||||
if (ctx->video_device_index == -1) { |
|
||||||
sscanf(s->filename, "%d", &ctx->video_device_index); |
|
||||||
} |
|
||||||
|
|
||||||
if (ctx->video_device_index >= 0) { |
|
||||||
NSArray *devices = [QTCaptureDevice inputDevicesWithMediaType:QTMediaTypeVideo]; |
|
||||||
|
|
||||||
if (ctx->video_device_index >= [devices count]) { |
|
||||||
av_log(ctx, AV_LOG_ERROR, "Invalid device index\n"); |
|
||||||
goto fail; |
|
||||||
} |
|
||||||
|
|
||||||
video_device = [devices objectAtIndex:ctx->video_device_index]; |
|
||||||
} else if (strncmp(s->filename, "", 1) && |
|
||||||
strncmp(s->filename, "default", 7)) { |
|
||||||
NSArray *devices = [QTCaptureDevice inputDevicesWithMediaType:QTMediaTypeVideo]; |
|
||||||
|
|
||||||
for (QTCaptureDevice *device in devices) { |
|
||||||
if (!strncmp(s->filename, [[device localizedDisplayName] UTF8String], strlen(s->filename))) { |
|
||||||
video_device = device; |
|
||||||
break; |
|
||||||
} |
|
||||||
} |
|
||||||
if (!video_device) { |
|
||||||
av_log(ctx, AV_LOG_ERROR, "Video device not found\n"); |
|
||||||
goto fail; |
|
||||||
} |
|
||||||
} else { |
|
||||||
video_device = [QTCaptureDevice defaultInputDeviceWithMediaType:QTMediaTypeMuxed]; |
|
||||||
} |
|
||||||
|
|
||||||
BOOL success = [video_device open:nil]; |
|
||||||
|
|
||||||
// Video capture device not found, looking for QTMediaTypeVideo |
|
||||||
if (!success) { |
|
||||||
video_device = [QTCaptureDevice defaultInputDeviceWithMediaType:QTMediaTypeVideo]; |
|
||||||
success = [video_device open:nil]; |
|
||||||
|
|
||||||
if (!success) { |
|
||||||
av_log(s, AV_LOG_ERROR, "No QT capture device found\n"); |
|
||||||
goto fail; |
|
||||||
} |
|
||||||
} |
|
||||||
|
|
||||||
NSString* dev_display_name = [video_device localizedDisplayName]; |
|
||||||
av_log (s, AV_LOG_DEBUG, "'%s' opened\n", [dev_display_name UTF8String]); |
|
||||||
|
|
||||||
// Initialize capture session |
|
||||||
ctx->capture_session = [[QTCaptureSession alloc] init]; |
|
||||||
|
|
||||||
QTCaptureDeviceInput* capture_dev_input = [[[QTCaptureDeviceInput alloc] initWithDevice:video_device] autorelease]; |
|
||||||
success = [ctx->capture_session addInput:capture_dev_input error:nil]; |
|
||||||
|
|
||||||
if (!success) { |
|
||||||
av_log (s, AV_LOG_ERROR, "Failed to add QT capture device to session\n"); |
|
||||||
goto fail; |
|
||||||
} |
|
||||||
|
|
||||||
// Attaching output |
|
||||||
// FIXME: Allow for a user defined pixel format |
|
||||||
ctx->video_output = [[QTCaptureDecompressedVideoOutput alloc] init]; |
|
||||||
|
|
||||||
NSDictionary *captureDictionary = [NSDictionary dictionaryWithObject: |
|
||||||
[NSNumber numberWithUnsignedInt:kCVPixelFormatType_24RGB] |
|
||||||
forKey:(id)kCVPixelBufferPixelFormatTypeKey]; |
|
||||||
|
|
||||||
[ctx->video_output setPixelBufferAttributes:captureDictionary]; |
|
||||||
|
|
||||||
ctx->qt_delegate = [[FFMPEG_FrameReceiver alloc] initWithContext:ctx]; |
|
||||||
|
|
||||||
[ctx->video_output setDelegate:ctx->qt_delegate]; |
|
||||||
[ctx->video_output setAutomaticallyDropsLateVideoFrames:YES]; |
|
||||||
[ctx->video_output setMinimumVideoFrameInterval:1.0/ctx->frame_rate]; |
|
||||||
|
|
||||||
success = [ctx->capture_session addOutput:ctx->video_output error:nil]; |
|
||||||
|
|
||||||
if (!success) { |
|
||||||
av_log (s, AV_LOG_ERROR, "can't add video output to capture session\n"); |
|
||||||
goto fail; |
|
||||||
} |
|
||||||
|
|
||||||
[ctx->capture_session startRunning]; |
|
||||||
|
|
||||||
// Take stream info from the first frame. |
|
||||||
while (ctx->frames_captured < 1) { |
|
||||||
CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0.1, YES); |
|
||||||
} |
|
||||||
|
|
||||||
lock_frames(ctx); |
|
||||||
|
|
||||||
AVStream* stream = avformat_new_stream(s, NULL); |
|
||||||
|
|
||||||
if (!stream) { |
|
||||||
goto fail; |
|
||||||
} |
|
||||||
|
|
||||||
avpriv_set_pts_info(stream, 64, 1, QTKIT_TIMEBASE); |
|
||||||
|
|
||||||
stream->codec->codec_id = AV_CODEC_ID_RAWVIDEO; |
|
||||||
stream->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
|
||||||
stream->codec->width = (int)CVPixelBufferGetWidth (ctx->current_frame); |
|
||||||
stream->codec->height = (int)CVPixelBufferGetHeight(ctx->current_frame); |
|
||||||
stream->codec->pix_fmt = AV_PIX_FMT_RGB24; |
|
||||||
|
|
||||||
CVBufferRelease(ctx->current_frame); |
|
||||||
ctx->current_frame = nil; |
|
||||||
|
|
||||||
unlock_frames(ctx); |
|
||||||
|
|
||||||
[pool release]; |
|
||||||
|
|
||||||
return 0; |
|
||||||
|
|
||||||
fail: |
|
||||||
[pool release]; |
|
||||||
|
|
||||||
destroy_context(ctx); |
|
||||||
|
|
||||||
return AVERROR(EIO); |
|
||||||
} |
|
||||||
|
|
||||||
static int qtkit_read_packet(AVFormatContext *s, AVPacket *pkt) |
|
||||||
{ |
|
||||||
CaptureContext* ctx = (CaptureContext*)s->priv_data; |
|
||||||
|
|
||||||
do { |
|
||||||
lock_frames(ctx); |
|
||||||
|
|
||||||
if (ctx->current_frame != nil) { |
|
||||||
if (av_new_packet(pkt, (int)CVPixelBufferGetDataSize(ctx->current_frame)) < 0) { |
|
||||||
return AVERROR(EIO); |
|
||||||
} |
|
||||||
|
|
||||||
pkt->pts = pkt->dts = av_rescale_q(av_gettime() - ctx->first_pts, AV_TIME_BASE_Q, kQTKitTimeBase_q); |
|
||||||
pkt->stream_index = 0; |
|
||||||
pkt->flags |= AV_PKT_FLAG_KEY; |
|
||||||
|
|
||||||
CVPixelBufferLockBaseAddress(ctx->current_frame, 0); |
|
||||||
|
|
||||||
void* data = CVPixelBufferGetBaseAddress(ctx->current_frame); |
|
||||||
memcpy(pkt->data, data, pkt->size); |
|
||||||
|
|
||||||
CVPixelBufferUnlockBaseAddress(ctx->current_frame, 0); |
|
||||||
CVBufferRelease(ctx->current_frame); |
|
||||||
ctx->current_frame = nil; |
|
||||||
} else { |
|
||||||
pkt->data = NULL; |
|
||||||
pthread_cond_wait(&ctx->frame_wait_cond, &ctx->frame_lock); |
|
||||||
} |
|
||||||
|
|
||||||
unlock_frames(ctx); |
|
||||||
} while (!pkt->data); |
|
||||||
|
|
||||||
return 0; |
|
||||||
} |
|
||||||
|
|
||||||
static int qtkit_close(AVFormatContext *s) |
|
||||||
{ |
|
||||||
CaptureContext* ctx = (CaptureContext*)s->priv_data; |
|
||||||
|
|
||||||
destroy_context(ctx); |
|
||||||
|
|
||||||
return 0; |
|
||||||
} |
|
||||||
|
|
||||||
static const AVOption options[] = { |
|
||||||
{ "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 }, |
|
||||||
{ "list_devices", "list available devices", offsetof(CaptureContext, list_devices), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM, "list_devices" }, |
|
||||||
{ "true", "", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "list_devices" }, |
|
||||||
{ "false", "", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "list_devices" }, |
|
||||||
{ "video_device_index", "select video device by index for devices with same name (starts at 0)", offsetof(CaptureContext, video_device_index), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, |
|
||||||
{ NULL }, |
|
||||||
}; |
|
||||||
|
|
||||||
static const AVClass qtkit_class = { |
|
||||||
.class_name = "QTKit input device", |
|
||||||
.item_name = av_default_item_name, |
|
||||||
.option = options, |
|
||||||
.version = LIBAVUTIL_VERSION_INT, |
|
||||||
.category = AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT, |
|
||||||
}; |
|
||||||
|
|
||||||
AVInputFormat ff_qtkit_demuxer = { |
|
||||||
.name = "qtkit", |
|
||||||
.long_name = NULL_IF_CONFIG_SMALL("QTKit input device"), |
|
||||||
.priv_data_size = sizeof(CaptureContext), |
|
||||||
.read_header = qtkit_read_header, |
|
||||||
.read_packet = qtkit_read_packet, |
|
||||||
.read_close = qtkit_close, |
|
||||||
.flags = AVFMT_NOFILE, |
|
||||||
.priv_class = &qtkit_class, |
|
||||||
}; |
|
||||||
Loading…
Reference in new issue