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pjproject/pjmedia/src/pjmedia-videodev/darwin_dev.m

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/*
* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "util.h"
#include <pjmedia-videodev/videodev_imp.h>
#include <pj/assert.h>
#include <pj/log.h>
#include <pj/os.h>
#if defined(PJMEDIA_HAS_VIDEO) && PJMEDIA_HAS_VIDEO != 0 && \
defined(PJMEDIA_VIDEO_DEV_HAS_DARWIN) && PJMEDIA_VIDEO_DEV_HAS_DARWIN != 0
#include "TargetConditionals.h"
#if TARGET_OS_IPHONE
/* On iOS, we supports rendering using UIView */
#import <UIKit/UIKit.h>
#endif
#import <AVFoundation/AVFoundation.h>
#import <QuartzCore/QuartzCore.h>
#define THIS_FILE "darwin_dev.m"
#define DEFAULT_CLOCK_RATE 90000
#define DEFAULT_WIDTH 640
#define DEFAULT_HEIGHT 480
#define DEFAULT_FPS 15
/* Define whether we should maintain the aspect ratio when rotating the image.
* For more details, please refer to util.h.
*/
#define MAINTAIN_ASPECT_RATIO PJ_TRUE
typedef struct darwin_fmt_info
{
pjmedia_format_id pjmedia_format;
UInt32 darwin_format;
} darwin_fmt_info;
static darwin_fmt_info darwin_fmts[] =
{
#if !TARGET_OS_IPHONE
{ PJMEDIA_FORMAT_YUY2, kCVPixelFormatType_422YpCbCr8_yuvs },
{ PJMEDIA_FORMAT_UYVY, kCVPixelFormatType_422YpCbCr8 },
#endif
{ PJMEDIA_FORMAT_BGRA, kCVPixelFormatType_32BGRA },
{ PJMEDIA_FORMAT_I420, kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange }
};
typedef struct darwin_supported_size
{
pj_size_t supported_size_w;
pj_size_t supported_size_h;
NSString *preset_str;
} darwin_supported_size;
/* Set the preset_str on set_preset_str method. */
static darwin_supported_size darwin_sizes[] =
{
#if !TARGET_OS_IPHONE
{ 320, 240, NULL },
#endif
{ 352, 288, NULL },
{ 640, 480, NULL },
#if !TARGET_OS_IPHONE
{ 960, 540, NULL },
#endif
{ 1280, 720, NULL }
#if TARGET_OS_IPHONE
,{ 1920, 1080, NULL }
#endif
};
/* darwin device info */
struct darwin_dev_info
{
pjmedia_vid_dev_info info;
AVCaptureDevice *dev;
};
/* darwin factory */
struct darwin_factory
{
pjmedia_vid_dev_factory base;
pj_pool_t *pool;
pj_pool_factory *pf;
unsigned dev_count;
struct darwin_dev_info *dev_info;
};
@interface VOutDelegate: NSObject
<AVCaptureVideoDataOutputSampleBufferDelegate>
{
@public
struct darwin_stream *stream;
}
@end
/* Video stream. */
struct darwin_stream
{
pjmedia_vid_dev_stream base; /**< Base stream */
pjmedia_vid_dev_param param; /**< Settings */
pj_pool_t *pool; /**< Memory pool */
struct darwin_factory *factory; /**< Factory */
pjmedia_vid_dev_cb vid_cb; /**< Stream callback */
void *user_data; /**< Application data */
pjmedia_rect_size size;
unsigned bytes_per_row;
unsigned frame_size; /**< Frame size (bytes)*/
pj_bool_t is_planar;
NSLock *frame_lock;
void *capture_buf;
void *frame_buf;
pjmedia_vid_dev_conv conv;
pjmedia_rect_size vid_size;
AVCaptureSession *cap_session;
AVCaptureDeviceInput *dev_input;
pj_bool_t has_image;
AVCaptureVideoDataOutput *video_output;
VOutDelegate *vout_delegate;
dispatch_queue_t queue;
pj_bool_t is_running;
#if TARGET_OS_IPHONE
pj_bool_t is_rendering;
void *render_buf;
pj_size_t render_buf_size;
CGDataProviderRef render_data_provider;
UIView *render_view;
AVCaptureVideoPreviewLayer *prev_layer;
UIView *prev_view;
#endif
pj_timestamp frame_ts;
unsigned ts_inc;
};
/* Prototypes */
static pj_status_t darwin_factory_init(pjmedia_vid_dev_factory *f);
static pj_status_t darwin_factory_destroy(pjmedia_vid_dev_factory *f);
static pj_status_t darwin_factory_refresh(pjmedia_vid_dev_factory *f);
static unsigned darwin_factory_get_dev_count(pjmedia_vid_dev_factory *f);
static pj_status_t darwin_factory_get_dev_info(pjmedia_vid_dev_factory *f,
unsigned index,
pjmedia_vid_dev_info *info);
static pj_status_t darwin_factory_default_param(pj_pool_t *pool,
pjmedia_vid_dev_factory *f,
unsigned index,
pjmedia_vid_dev_param *param);
static pj_status_t darwin_factory_create_stream(
pjmedia_vid_dev_factory *f,
pjmedia_vid_dev_param *param,
const pjmedia_vid_dev_cb *cb,
void *user_data,
pjmedia_vid_dev_stream **p_vid_strm);
static pj_status_t darwin_stream_get_param(pjmedia_vid_dev_stream *strm,
pjmedia_vid_dev_param *param);
static pj_status_t darwin_stream_get_cap(pjmedia_vid_dev_stream *strm,
pjmedia_vid_dev_cap cap,
void *value);
static pj_status_t darwin_stream_set_cap(pjmedia_vid_dev_stream *strm,
pjmedia_vid_dev_cap cap,
const void *value);
static pj_status_t darwin_stream_start(pjmedia_vid_dev_stream *strm);
static pj_status_t darwin_stream_get_frame(pjmedia_vid_dev_stream *strm,
pjmedia_frame *frame);
static pj_status_t darwin_stream_put_frame(pjmedia_vid_dev_stream *strm,
const pjmedia_frame *frame);
static pj_status_t darwin_stream_stop(pjmedia_vid_dev_stream *strm);
static pj_status_t darwin_stream_destroy(pjmedia_vid_dev_stream *strm);
/* Operations */
static pjmedia_vid_dev_factory_op factory_op =
{
&darwin_factory_init,
&darwin_factory_destroy,
&darwin_factory_get_dev_count,
&darwin_factory_get_dev_info,
&darwin_factory_default_param,
&darwin_factory_create_stream,
&darwin_factory_refresh
};
static pjmedia_vid_dev_stream_op stream_op =
{
&darwin_stream_get_param,
&darwin_stream_get_cap,
&darwin_stream_set_cap,
&darwin_stream_start,
&darwin_stream_get_frame,
&darwin_stream_put_frame,
&darwin_stream_stop,
&darwin_stream_destroy
};
static void set_preset_str()
{
int idx = 0;
#if !TARGET_OS_IPHONE
darwin_sizes[idx++].preset_str = AVCaptureSessionPreset320x240;
#endif
darwin_sizes[idx++].preset_str = AVCaptureSessionPreset352x288;
darwin_sizes[idx++].preset_str = AVCaptureSessionPreset640x480;
#if !TARGET_OS_IPHONE
darwin_sizes[idx++].preset_str = AVCaptureSessionPreset960x540;
#endif
darwin_sizes[idx++].preset_str = AVCaptureSessionPreset1280x720;
#if TARGET_OS_IPHONE
darwin_sizes[idx++].preset_str = AVCaptureSessionPreset1920x1080;
#endif
}
#if TARGET_OS_IPHONE
static void dispatch_sync_on_main_queue(void (^block)(void))
{
if ([NSThread isMainThread]) {
block();
} else {
dispatch_sync(dispatch_get_main_queue(), block);
}
}
#endif
/****************************************************************************
* Factory operations
*/
/*
* Init darwin_ video driver.
*/
pjmedia_vid_dev_factory* pjmedia_darwin_factory(pj_pool_factory *pf)
{
struct darwin_factory *f;
pj_pool_t *pool;
pool = pj_pool_create(pf, "darwin video", 8000, 4000, NULL);
f = PJ_POOL_ZALLOC_T(pool, struct darwin_factory);
f->pf = pf;
f->pool = pool;
f->base.op = &factory_op;
return &f->base;
}
/* API: init factory */
static pj_status_t darwin_factory_init(pjmedia_vid_dev_factory *f)
{
return darwin_factory_refresh(f);
}
/* API: destroy factory */
static pj_status_t darwin_factory_destroy(pjmedia_vid_dev_factory *f)
{
struct darwin_factory *qf = (struct darwin_factory*)f;
pj_pool_t *pool = qf->pool;
qf->pool = NULL;
pj_pool_release(pool);
return PJ_SUCCESS;
}
/* API: refresh the list of devices */
static pj_status_t darwin_factory_refresh(pjmedia_vid_dev_factory *f)
{
struct darwin_factory *qf = (struct darwin_factory*)f;
struct darwin_dev_info *qdi;
unsigned i, l, first_idx, front_idx = -1;
enum { MAX_DEV_COUNT = 8 };
set_preset_str();
/* Initialize input and output devices here */
qf->dev_info = (struct darwin_dev_info*)
pj_pool_calloc(qf->pool, MAX_DEV_COUNT,
sizeof(struct darwin_dev_info));
qf->dev_count = 0;
#if TARGET_OS_IPHONE
/* Init output device */
qdi = &qf->dev_info[qf->dev_count++];
pj_bzero(qdi, sizeof(*qdi));
pj_ansi_strxcpy(qdi->info.name, "UIView", sizeof(qdi->info.name));
pj_ansi_strxcpy(qdi->info.driver, "iOS", sizeof(qdi->info.driver));
qdi->info.dir = PJMEDIA_DIR_RENDER;
qdi->info.has_callback = PJ_FALSE;
#endif
/* Init input device */
first_idx = qf->dev_count;
if (NSClassFromString(@"AVCaptureSession")) {
NSArray *dev_list = NULL;
if (@available(macOS 10.15, iOS 10.0, *)) {
/* Starting in iOS 10 and macOS 10.15, [AVCaptureDevice devices]
* is deprecated and replaced by AVCaptureDeviceDiscoverySession.
*/
AVCaptureDeviceDiscoverySession *dds;
NSMutableArray<AVCaptureDeviceType> *dev_types =
[NSMutableArray arrayWithCapacity:5];
[dev_types addObject:AVCaptureDeviceTypeBuiltInWideAngleCamera];
#if TARGET_OS_IPHONE && defined(__IPHONE_10_0)
// Deprecated in iOS 10.2
// AVCaptureDeviceTypeBuiltInDuoCamera
[dev_types addObject:AVCaptureDeviceTypeBuiltInTelephotoCamera];
#endif
#if (TARGET_OS_IPHONE && defined(__IPHONE_17_0)) || \
(TARGET_OS_OSX && defined(__MAC_14_0))
if (@available(macOS 14.0, iOS 17.0, *)) {
[dev_types addObject:AVCaptureDeviceTypeExternal];
} else {
# if (TARGET_OS_OSX && __MAC_OS_X_VERSION_MIN_REQUIRED < 140000)
[dev_types addObject:AVCaptureDeviceTypeExternalUnknown];
# endif
}
#elif TARGET_OS_OSX
[dev_types addObject:AVCaptureDeviceTypeExternalUnknown];
#endif
dds = [AVCaptureDeviceDiscoverySession
discoverySessionWithDeviceTypes:dev_types
mediaType:AVMediaTypeVideo
position:AVCaptureDevicePositionUnspecified];
dev_list = [dds devices];
} else {
#if (TARGET_OS_OSX && __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_15) || \
(TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_10_0)
dev_list = [AVCaptureDevice devices];
#endif
}
for (AVCaptureDevice *device in dev_list) {
if (![device hasMediaType:AVMediaTypeVideo] ||
qf->dev_count >= MAX_DEV_COUNT)
{
continue;
}
if (front_idx == -1 &&
[device position] == AVCaptureDevicePositionFront)
{
front_idx = qf->dev_count;
}
qdi = &qf->dev_info[qf->dev_count++];
pj_bzero(qdi, sizeof(*qdi));
pj_ansi_strxcpy(qdi->info.name,
[device.localizedName UTF8String],
sizeof(qdi->info.name));
pj_ansi_strxcpy(qdi->info.driver, "AVF",
sizeof(qdi->info.driver));
qdi->info.dir = PJMEDIA_DIR_CAPTURE;
qdi->info.has_callback = PJ_FALSE;
#if TARGET_OS_IPHONE
qdi->info.caps = PJMEDIA_VID_DEV_CAP_INPUT_PREVIEW |
PJMEDIA_VID_DEV_CAP_SWITCH;
#endif
qdi->dev = device;
}
}
/* Set front camera to be the first input device (as default dev) */
if (front_idx != -1 && front_idx != first_idx) {
struct darwin_dev_info tmp_dev_info = qf->dev_info[first_idx];
qf->dev_info[first_idx] = qf->dev_info[front_idx];
qf->dev_info[front_idx] = tmp_dev_info;
}
/* Set supported formats */
for (i = 0; i < qf->dev_count; i++) {
qdi = &qf->dev_info[i];
qdi->info.caps |= PJMEDIA_VID_DEV_CAP_FORMAT |
PJMEDIA_VID_DEV_CAP_OUTPUT_WINDOW |
PJMEDIA_VID_DEV_CAP_OUTPUT_RESIZE |
PJMEDIA_VID_DEV_CAP_OUTPUT_POSITION |
PJMEDIA_VID_DEV_CAP_OUTPUT_HIDE |
PJMEDIA_VID_DEV_CAP_ORIENTATION;
for (l = 0; l < PJ_ARRAY_SIZE(darwin_fmts); l++) {
pjmedia_format *fmt;
/* Simple renderer UIView only supports BGRA */
if (qdi->info.dir == PJMEDIA_DIR_RENDER &&
darwin_fmts[l].pjmedia_format != PJMEDIA_FORMAT_BGRA)
{
continue;
}
if (qdi->info.dir == PJMEDIA_DIR_RENDER) {
fmt = &qdi->info.fmt[qdi->info.fmt_cnt++];
pjmedia_format_init_video(fmt,
darwin_fmts[l].pjmedia_format,
DEFAULT_WIDTH,
DEFAULT_HEIGHT,
DEFAULT_FPS, 1);
} else {
int m;
AVCaptureDevice *dev = qdi->dev;
/* Set supported size for capture device */
for(m = 0;
m < PJ_ARRAY_SIZE(darwin_sizes) &&
qdi->info.fmt_cnt<PJMEDIA_VID_DEV_INFO_FMT_CNT;
m++)
{
if ([dev supportsAVCaptureSessionPreset:
darwin_sizes[m].preset_str])
{
/* Landscape video */
fmt = &qdi->info.fmt[qdi->info.fmt_cnt++];
pjmedia_format_init_video(fmt,
darwin_fmts[l].pjmedia_format,
darwin_sizes[m].supported_size_w,
darwin_sizes[m].supported_size_h,
DEFAULT_FPS, 1);
/* Portrait video */
fmt = &qdi->info.fmt[qdi->info.fmt_cnt++];
pjmedia_format_init_video(fmt,
darwin_fmts[l].pjmedia_format,
darwin_sizes[m].supported_size_h,
darwin_sizes[m].supported_size_w,
DEFAULT_FPS, 1);
}
}
}
}
}
PJ_LOG(4, (THIS_FILE, "Darwin video initialized with %d devices:",
qf->dev_count));
for (i = 0; i < qf->dev_count; i++) {
qdi = &qf->dev_info[i];
PJ_LOG(4, (THIS_FILE, "%2d: [%s] %s - %s", i,
(qdi->info.dir==PJMEDIA_DIR_CAPTURE? "Capturer":"Renderer"),
qdi->info.driver, qdi->info.name));
}
return PJ_SUCCESS;
}
/* API: get number of devices */
static unsigned darwin_factory_get_dev_count(pjmedia_vid_dev_factory *f)
{
struct darwin_factory *qf = (struct darwin_factory*)f;
return qf->dev_count;
}
/* API: get device info */
static pj_status_t darwin_factory_get_dev_info(pjmedia_vid_dev_factory *f,
unsigned index,
pjmedia_vid_dev_info *info)
{
struct darwin_factory *qf = (struct darwin_factory*)f;
PJ_ASSERT_RETURN(index < qf->dev_count, PJMEDIA_EVID_INVDEV);
pj_memcpy(info, &qf->dev_info[index].info, sizeof(*info));
return PJ_SUCCESS;
}
/* API: create default device parameter */
static pj_status_t darwin_factory_default_param(pj_pool_t *pool,
pjmedia_vid_dev_factory *f,
unsigned index,
pjmedia_vid_dev_param *param)
{
struct darwin_factory *qf = (struct darwin_factory*)f;
struct darwin_dev_info *di;
PJ_ASSERT_RETURN(index < qf->dev_count, PJMEDIA_EVID_INVDEV);
PJ_UNUSED_ARG(pool);
di = &qf->dev_info[index];
pj_bzero(param, sizeof(*param));
if (di->info.dir & PJMEDIA_DIR_CAPTURE) {
param->dir = PJMEDIA_DIR_CAPTURE;
param->cap_id = index;
param->rend_id = PJMEDIA_VID_INVALID_DEV;
} else if (di->info.dir & PJMEDIA_DIR_RENDER) {
param->dir = PJMEDIA_DIR_RENDER;
param->rend_id = index;
param->cap_id = PJMEDIA_VID_INVALID_DEV;
} else {
return PJMEDIA_EVID_INVDEV;
}
param->flags = PJMEDIA_VID_DEV_CAP_FORMAT;
param->clock_rate = DEFAULT_CLOCK_RATE;
pj_memcpy(&param->fmt, &di->info.fmt[0], sizeof(param->fmt));
return PJ_SUCCESS;
}
@implementation VOutDelegate
#if TARGET_OS_IPHONE
- (void)update_image
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
CGImageRef cgIm = CGImageCreate(stream->size.w, stream->size.h,
8, 32, stream->bytes_per_row, colorSpace,
kCGImageAlphaFirst |
kCGBitmapByteOrder32Little,
stream->render_data_provider, 0,
false, kCGRenderingIntentDefault);
CGColorSpaceRelease(colorSpace);
stream->render_view.layer.contents = (__bridge id)(cgIm);
CGImageRelease(cgIm);
[pool release];
stream->is_rendering = PJ_FALSE;
}
- (void)finish_render
{
/* Do nothing. This function is serialized in the main thread, so when
* it is called, we can be sure that update_image() has completed.
*/
}
#endif
- (void)session_runtime_error:(NSNotification *)notification
{
// This function is called from NSNotificationCenter.
// Make sure the thread is registered.
if (!pj_thread_is_registered()) {
pj_thread_t *thread;
static pj_thread_desc thread_desc;
pj_bzero(thread_desc, sizeof(pj_thread_desc));
pj_thread_register("NSNotificationCenter", thread_desc, &thread);
}
NSError *error = notification.userInfo[AVCaptureSessionErrorKey];
PJ_LOG(3, (THIS_FILE, "Capture session runtime error: %s, %s",
[error.localizedDescription UTF8String],
[error.localizedFailureReason UTF8String]));
}
- (void)captureOutput:(AVCaptureOutput *)captureOutput
didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
fromConnection:(AVCaptureConnection *)connection
{
CVImageBufferRef img;
pj_status_t status;
void *frame_buf;
/* Refrain from calling pjlib functions which require thread registration
* here, since according to the doc, dispatch queue cannot guarantee
* the reliability of underlying functions required by PJSIP to perform
* the registration, such as pthread_self() and pthread_getspecific()/
* pthread_setspecific().
*/
if (!sampleBuffer)
return;
/* Get a CMSampleBuffer's Core Video image buffer for the media data */
img = CMSampleBufferGetImageBuffer(sampleBuffer);
/* Lock the base address of the pixel buffer */
CVPixelBufferLockBaseAddress(img, kCVPixelBufferLock_ReadOnly);
[stream->frame_lock lock];
stream->has_image = PJ_TRUE;
if (stream->is_planar && stream->capture_buf) {
if (stream->param.fmt.id == PJMEDIA_FORMAT_I420) {
/* kCVPixelFormatType_420YpCbCr8BiPlanar* is NV12 */
pj_uint8_t *p, *p_end, *Y, *U, *V;
pj_size_t p_len;
pj_size_t wxh = stream->vid_size.w * stream->vid_size.h;
/* Image stride is not always equal to the image width.
* For example, resolution 352*288 can have a stride of 384.
*/
pj_size_t stride = CVPixelBufferGetBytesPerRowOfPlane(img, 0);
/* Image height is not always equal to the video resolution.
* For example, resolution 352*288 can have a height of 264.
*/
pj_size_t height = CVPixelBufferGetHeight(img);
pj_bool_t need_clip;
/* Auto detect rotation */
if ((stream->vid_size.w > stream->vid_size.h && stride < height) ||
(stream->vid_size.h > stream->vid_size.w && stride > height))
{
pj_size_t w = stream->vid_size.w;
stream->vid_size.w = stream->vid_size.h;
stream->vid_size.h = w;
}
need_clip = (stride != stream->vid_size.w);
p = (pj_uint8_t*)CVPixelBufferGetBaseAddressOfPlane(img, 0);
p_len = stream->vid_size.w * height;
Y = (pj_uint8_t*)stream->capture_buf;
U = Y + wxh;
V = U + wxh/4;
if (!need_clip) {
pj_memcpy(Y, p, p_len);
Y += p_len;
} else {
int i = 0;
for (; i < height; ++i) {
pj_memcpy(Y, p, stream->vid_size.w);
Y += stream->vid_size.w;
p += stride;
}
}
if (stream->vid_size.h > height) {
pj_memset(Y, 16, (stream->vid_size.h - height) *
stream->vid_size.w);
}
p = (pj_uint8_t*)CVPixelBufferGetBaseAddressOfPlane(img, 1);
if (!need_clip) {
p_len >>= 1;
p_end = p + p_len;
while (p < p_end) {
*U++ = *p++;
*V++ = *p++;
}
} else {
int i = 0;
for (;i<height/2;++i) {
int y=0;
for (;y<(stream->vid_size.w)/2;++y) {
*U++ = *p++;
*V++ = *p++;
}
p += (stride - stream->vid_size.w);
}
}
if (stream->vid_size.h > height) {
pj_size_t UV_size = (stream->vid_size.h - height) *
stream->vid_size.w / 4;
pj_memset(U, 0x80, UV_size);
pj_memset(V, 0x80, UV_size);
}
}
} else {
pj_memcpy(stream->capture_buf, CVPixelBufferGetBaseAddress(img),
stream->frame_size);
}
status = pjmedia_vid_dev_conv_resize_and_rotate(&stream->conv,
stream->capture_buf,
&frame_buf);
if (status == PJ_SUCCESS) {
stream->frame_buf = frame_buf;
}
stream->frame_ts.u64 += stream->ts_inc;
[stream->frame_lock unlock];
/* Unlock the pixel buffer */
CVPixelBufferUnlockBaseAddress(img, kCVPixelBufferLock_ReadOnly);
}
@end
static pj_status_t darwin_stream_get_frame(pjmedia_vid_dev_stream *strm,
pjmedia_frame *frame)
{
struct darwin_stream *stream = (struct darwin_stream *)strm;
if (!stream->has_image) {
frame->size = 0;
frame->type = PJMEDIA_FRAME_TYPE_NONE;
frame->timestamp.u64 = stream->frame_ts.u64;
return PJMEDIA_EVID_NOTREADY;
}
frame->type = PJMEDIA_FRAME_TYPE_VIDEO;
frame->bit_info = 0;
pj_assert(frame->size >= stream->frame_size);
frame->size = stream->frame_size;
frame->timestamp.u64 = stream->frame_ts.u64;
[stream->frame_lock lock];
pj_memcpy(frame->buf, stream->frame_buf, stream->frame_size);
[stream->frame_lock unlock];
return PJ_SUCCESS;
}
static darwin_fmt_info* get_darwin_format_info(pjmedia_format_id id)
{
unsigned i;
for (i = 0; i < PJ_ARRAY_SIZE(darwin_fmts); i++) {
if (darwin_fmts[i].pjmedia_format == id)
return &darwin_fmts[i];
}
return NULL;
}
#if TARGET_OS_IPHONE
static pj_status_t darwin_init_view(struct darwin_stream *strm)
{
pjmedia_vid_dev_param *param = &strm->param;
CGRect view_rect = CGRectMake(0, 0, param->fmt.det.vid.size.w,
param->fmt.det.vid.size.h);
if (param->flags & PJMEDIA_VID_DEV_CAP_OUTPUT_RESIZE) {
view_rect.size.width = param->disp_size.w;
view_rect.size.height = param->disp_size.h;
}
if (param->flags & PJMEDIA_VID_DEV_CAP_OUTPUT_POSITION) {
view_rect.origin.x = param->window_pos.x;
view_rect.origin.y = param->window_pos.y;
}
strm->render_view = [[UIView alloc] initWithFrame:view_rect];
strm->param.window.info.ios.window = strm->render_view;
if (param->flags & PJMEDIA_VID_DEV_CAP_OUTPUT_WINDOW) {
PJ_ASSERT_RETURN(param->window.info.ios.window, PJ_EINVAL);
darwin_stream_set_cap(&strm->base, PJMEDIA_VID_DEV_CAP_OUTPUT_WINDOW,
param->window.info.ios.window);
}
if (param->flags & PJMEDIA_VID_DEV_CAP_OUTPUT_HIDE) {
darwin_stream_set_cap(&strm->base, PJMEDIA_VID_DEV_CAP_OUTPUT_HIDE,
&param->window_hide);
}
if (param->flags & PJMEDIA_VID_DEV_CAP_ORIENTATION) {
darwin_stream_set_cap(&strm->base, PJMEDIA_VID_DEV_CAP_ORIENTATION,
&param->orient);
}
return PJ_SUCCESS;
}
#endif /* TARGET_OS_IPHONE */
/* API: create stream */
static pj_status_t darwin_factory_create_stream(
pjmedia_vid_dev_factory *f,
pjmedia_vid_dev_param *param,
const pjmedia_vid_dev_cb *cb,
void *user_data,
pjmedia_vid_dev_stream **p_vid_strm)
{
struct darwin_factory *qf = (struct darwin_factory*)f;
pj_pool_t *pool;
struct darwin_stream *strm;
pjmedia_video_format_detail *vfd;
const pjmedia_video_format_info *vfi;
pj_status_t status = PJ_SUCCESS;
darwin_fmt_info *ifi = get_darwin_format_info(param->fmt.id);
PJ_ASSERT_RETURN(f && param && p_vid_strm, PJ_EINVAL);
PJ_ASSERT_RETURN(param->fmt.type == PJMEDIA_TYPE_VIDEO &&
param->fmt.detail_type == PJMEDIA_FORMAT_DETAIL_VIDEO &&
(param->dir == PJMEDIA_DIR_CAPTURE ||
param->dir == PJMEDIA_DIR_RENDER),
PJ_EINVAL);
if (!(ifi = get_darwin_format_info(param->fmt.id)))
return PJMEDIA_EVID_BADFORMAT;
vfi = pjmedia_get_video_format_info(NULL, param->fmt.id);
if (!vfi)
return PJMEDIA_EVID_BADFORMAT;
/* Create and Initialize stream descriptor */
pool = pj_pool_create(qf->pf, "darwin-dev", 4000, 4000, NULL);
PJ_ASSERT_RETURN(pool != NULL, PJ_ENOMEM);
strm = PJ_POOL_ZALLOC_T(pool, struct darwin_stream);
pj_memcpy(&strm->param, param, sizeof(*param));
strm->pool = pool;
pj_memcpy(&strm->vid_cb, cb, sizeof(*cb));
strm->user_data = user_data;
strm->factory = qf;
vfd = pjmedia_format_get_video_format_detail(&strm->param.fmt, PJ_TRUE);
pj_memcpy(&strm->size, &vfd->size, sizeof(vfd->size));
strm->bytes_per_row = strm->size.w * vfi->bpp / 8;
strm->frame_size = strm->bytes_per_row * strm->size.h;
strm->ts_inc = PJMEDIA_SPF2(param->clock_rate, &vfd->fps, 1);
strm->is_planar = vfi->plane_cnt > 1;
if (param->dir & PJMEDIA_DIR_CAPTURE) {
int i;
/* Create capture stream here */
strm->cap_session = [[AVCaptureSession alloc] init];
if (!strm->cap_session) {
PJ_LOG(2, (THIS_FILE, "Unable to create AV capture session"));
status = PJ_ENOMEM;
goto on_error;
}
AVCaptureDevice *dev = qf->dev_info[param->cap_id].dev;
for (i = PJ_ARRAY_SIZE(darwin_sizes)-1; i > 0; --i) {
if (((vfd->size.w == darwin_sizes[i].supported_size_w) &&
(vfd->size.h == darwin_sizes[i].supported_size_h)) ||
((vfd->size.w == darwin_sizes[i].supported_size_h) &&
(vfd->size.h == darwin_sizes[i].supported_size_w)))
{
break;
}
}
strm->cap_session.sessionPreset = darwin_sizes[i].preset_str;
/* If the requested size is portrait (or landscape), we make
* our natural orientation portrait (or landscape) as well.
*/
if (vfd->size.w > vfd->size.h) {
vfd->size.w = darwin_sizes[i].supported_size_w;
vfd->size.h = darwin_sizes[i].supported_size_h;
} else {
vfd->size.h = darwin_sizes[i].supported_size_w;
vfd->size.w = darwin_sizes[i].supported_size_h;
}
strm->size = vfd->size;
strm->vid_size = vfd->size;
strm->bytes_per_row = strm->size.w * vfi->bpp / 8;
strm->frame_size = strm->bytes_per_row * strm->size.h;
/* Update param as output */
param->fmt = strm->param.fmt;
#if TARGET_OS_IPHONE
/* Set frame rate, this may only work on iOS 7 or later.
* On Mac, this may raise an exception if we set it to a value
* unsupported by the device. We need to query
* activeFormat.videoSupportedFrameRateRanges to get the valid
* range.
*/
if ([dev respondsToSelector:@selector(activeVideoMinFrameDuration)] &&
[dev lockForConfiguration:NULL])
{
dev.activeVideoMinFrameDuration = CMTimeMake(vfd->fps.denum,
vfd->fps.num);
dev.activeVideoMaxFrameDuration = CMTimeMake(vfd->fps.denum,
vfd->fps.num);
[dev unlockForConfiguration];
}
#endif
/* Add the video device to the session as a device input */
NSError *error;
strm->dev_input = [AVCaptureDeviceInput
deviceInputWithDevice:dev
error: &error];
if (error || !strm->dev_input) {
PJ_LOG(2, (THIS_FILE, "Unable to get input capture device"));
status = PJMEDIA_EVID_SYSERR;
goto on_error;
}
if ([strm->cap_session canAddInput:strm->dev_input]) {
[strm->cap_session addInput:strm->dev_input];
} else {
PJ_LOG(2, (THIS_FILE, "Unable to add input capture device"));
status = PJMEDIA_EVID_SYSERR;
goto on_error;
}
strm->video_output = [[AVCaptureVideoDataOutput alloc] init];
if (!strm->video_output) {
PJ_LOG(2, (THIS_FILE, "Unable to create AV video output"));
status = PJ_ENOMEM;
goto on_error;
}
/* Configure the video output */
strm->video_output.alwaysDiscardsLateVideoFrames = YES;
strm->video_output.videoSettings =
[NSDictionary dictionaryWithObjectsAndKeys:
#if !TARGET_OS_IPHONE
/* On Mac, we need to set the buffer's dimension
* to avoid extra padding.
*/
[NSNumber numberWithDouble:
darwin_sizes[i].supported_size_w],
(id)kCVPixelBufferWidthKey,
[NSNumber numberWithDouble:
darwin_sizes[i].supported_size_h],
(id)kCVPixelBufferHeightKey,
#endif
[NSNumber numberWithInt:ifi->darwin_format],
kCVPixelBufferPixelFormatTypeKey, nil];
strm->vout_delegate = [VOutDelegate alloc];
strm->vout_delegate->stream = strm;
strm->queue = dispatch_queue_create("vout_queue",
DISPATCH_QUEUE_SERIAL);
[strm->video_output setSampleBufferDelegate:strm->vout_delegate
queue:strm->queue];
/* Add observer to catch notification when the capture session
* fails to start running or encounters an error during runtime.
*/
[[NSNotificationCenter defaultCenter] addObserver:strm->vout_delegate
selector:@selector(session_runtime_error:)
name:AVCaptureSessionRuntimeErrorNotification
object:strm->cap_session];
if ([strm->cap_session canAddOutput:strm->video_output]) {
[strm->cap_session addOutput:strm->video_output];
} else {
PJ_LOG(2, (THIS_FILE, "Unable to add video data output"));
status = PJMEDIA_EVID_SYSERR;
goto on_error;
}
strm->capture_buf = pj_pool_alloc(strm->pool, strm->frame_size);
strm->frame_buf = strm->capture_buf;
strm->frame_lock = [[NSLock alloc]init];
/* Native preview */
if (param->flags & PJMEDIA_VID_DEV_CAP_INPUT_PREVIEW) {
darwin_stream_set_cap(&strm->base, PJMEDIA_VID_DEV_CAP_INPUT_PREVIEW,
&param->native_preview);
}
/* Video orientation.
* If we send in portrait, we need to set up orientation converter
* as well.
*/
if ((param->flags & PJMEDIA_VID_DEV_CAP_ORIENTATION) ||
(vfd->size.h > vfd->size.w))
{
if (param->orient == PJMEDIA_ORIENT_UNKNOWN)
param->orient = PJMEDIA_ORIENT_NATURAL;
darwin_stream_set_cap(&strm->base, PJMEDIA_VID_DEV_CAP_ORIENTATION,
&param->orient);
}
} else if (param->dir & PJMEDIA_DIR_RENDER) {
#if TARGET_OS_IPHONE
/* Create renderer stream here */
dispatch_sync_on_main_queue(^{
darwin_init_view(strm);
});
if (!strm->vout_delegate) {
strm->vout_delegate = [VOutDelegate alloc];
strm->vout_delegate->stream = strm;
}
strm->render_buf = pj_pool_alloc(pool, strm->frame_size);
strm->render_buf_size = strm->frame_size;
strm->render_data_provider = CGDataProviderCreateWithData(NULL,
strm->render_buf, strm->frame_size,
NULL);
#endif
}
/* Done */
strm->base.op = &stream_op;
*p_vid_strm = &strm->base;
return PJ_SUCCESS;
on_error:
darwin_stream_destroy((pjmedia_vid_dev_stream *)strm);
return status;
}
/* API: Get stream info. */
static pj_status_t darwin_stream_get_param(pjmedia_vid_dev_stream *s,
pjmedia_vid_dev_param *pi)
{
struct darwin_stream *strm = (struct darwin_stream*)s;
PJ_ASSERT_RETURN(strm && pi, PJ_EINVAL);
pj_memcpy(pi, &strm->param, sizeof(*pi));
return PJ_SUCCESS;
}
/* API: get capability */
static pj_status_t darwin_stream_get_cap(pjmedia_vid_dev_stream *s,
pjmedia_vid_dev_cap cap,
void *pval)
{
struct darwin_stream *strm = (struct darwin_stream*)s;
PJ_ASSERT_RETURN(s && pval, PJ_EINVAL);
PJ_UNUSED_ARG(strm);
switch (cap) {
#if TARGET_OS_IPHONE
case PJMEDIA_VID_DEV_CAP_INPUT_PREVIEW:
{
pjmedia_vid_dev_hwnd *hwnd = (pjmedia_vid_dev_hwnd *) pval;
hwnd->type = PJMEDIA_VID_DEV_HWND_TYPE_IOS;
hwnd->info.ios.window = (void *)strm->prev_view;
return PJ_SUCCESS;
}
case PJMEDIA_VID_DEV_CAP_OUTPUT_WINDOW:
{
pjmedia_vid_dev_hwnd *hwnd = (pjmedia_vid_dev_hwnd *) pval;
hwnd->type = PJMEDIA_VID_DEV_HWND_TYPE_IOS;
hwnd->info.ios.window = (void *)strm->render_view;
return PJ_SUCCESS;
}
#endif /* TARGET_OS_IPHONE */
default:
break;
}
return PJMEDIA_EVID_INVCAP;
}
static pj_bool_t set_orientation(struct darwin_stream *strm)
{
#if (TARGET_OS_OSX && __MAC_OS_X_VERSION_MIN_REQUIRED < 140000) || \
(TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MIN_REQUIRED < 170000)
const AVCaptureVideoOrientation cap_ori[4] =
{
AVCaptureVideoOrientationLandscapeLeft, /* NATURAL */
AVCaptureVideoOrientationPortrait, /* 90DEG */
AVCaptureVideoOrientationLandscapeRight, /* 180DEG */
AVCaptureVideoOrientationPortraitUpsideDown, /* 270DEG */
};
AVCaptureConnection *vidcon;
vidcon = [strm->video_output
connectionWithMediaType:AVMediaTypeVideo];
if ([vidcon isVideoOrientationSupported]) {
vidcon.videoOrientation = cap_ori[strm->param.orient-1];
return PJ_TRUE;
}
#endif
return PJ_FALSE;
}
/* API: set capability */
static pj_status_t darwin_stream_set_cap(pjmedia_vid_dev_stream *s,
pjmedia_vid_dev_cap cap,
const void *pval)
{
struct darwin_stream *strm = (struct darwin_stream*)s;
PJ_ASSERT_RETURN(s && pval, PJ_EINVAL);
switch (cap) {
#if TARGET_OS_IPHONE
/* Native preview */
case PJMEDIA_VID_DEV_CAP_INPUT_PREVIEW:
{
pj_bool_t native_preview = *((pj_bool_t *)pval);
/* Disable native preview */
if (!native_preview) {
if (strm->prev_layer) {
CALayer *prev_layer = strm->prev_layer;
dispatch_sync_on_main_queue(^{
if ([prev_layer superlayer])
[prev_layer removeFromSuperlayer];
[prev_layer release];
});
strm->prev_layer = nil;
PJ_LOG(4, (THIS_FILE, "Native preview deinitialized"));
}
return PJ_SUCCESS;
}
/* Enable native preview */
/* Verify if it is already enabled */
if (strm->prev_layer)
return PJ_SUCCESS;
/* Verify capture session instance availability */
if (!strm->cap_session)
return PJ_EINVALIDOP;
/* Preview layer instantiation should be in main thread! */
dispatch_sync_on_main_queue(^{
/* Create preview layer */
strm->prev_layer = [[AVCaptureVideoPreviewLayer alloc]
initWithSession:strm->cap_session];
strm->prev_layer.videoGravity =
AVLayerVideoGravityResizeAspectFill;
/* Create preview view and init it at smaller size than
* the actual video.
*/
if (!strm->prev_view) {
CGRect rect;
rect = CGRectMake(0, 0, strm->param.fmt.det.vid.size.w/2,
strm->param.fmt.det.vid.size.h/2);
strm->prev_view = [[UIView alloc] initWithFrame:rect];
}
/* Add the preview layer as sublayer */
strm->prev_layer.frame = strm->prev_view.bounds;
[strm->prev_view.layer addSublayer:strm->prev_layer];
});
PJ_LOG(4, (THIS_FILE, "Native preview initialized"));
return PJ_SUCCESS;
}
#endif
/* Fast switch */
case PJMEDIA_VID_DEV_CAP_SWITCH:
{
if (!strm->cap_session) return PJ_EINVAL;
NSError *error;
struct darwin_dev_info* di = strm->factory->dev_info;
pjmedia_vid_dev_switch_param *p =
(pjmedia_vid_dev_switch_param*)pval;
/* Verify target capture ID */
if (p->target_id < 0 || p->target_id >= strm->factory->dev_count)
return PJ_EINVAL;
if (di[p->target_id].info.dir != PJMEDIA_DIR_CAPTURE ||
!di[p->target_id].dev)
{
return PJ_EINVAL;
}
/* Just return if current and target device are the same */
if (strm->param.cap_id == p->target_id)
return PJ_SUCCESS;
/* Ok, let's do the switch */
AVCaptureDeviceInput *cur_dev_input = strm->dev_input;
AVCaptureDeviceInput *new_dev_input =
[AVCaptureDeviceInput
deviceInputWithDevice:di[p->target_id].dev
error:&error];
[strm->cap_session beginConfiguration];
[strm->cap_session removeInput:cur_dev_input];
[strm->cap_session addInput:new_dev_input];
[strm->cap_session commitConfiguration];
strm->dev_input = new_dev_input;
strm->param.cap_id = p->target_id;
/* Set the orientation as well */
darwin_stream_set_cap(s, PJMEDIA_VID_DEV_CAP_ORIENTATION,
&strm->param.orient);
return PJ_SUCCESS;
}
#if TARGET_OS_IPHONE
case PJMEDIA_VID_DEV_CAP_FORMAT:
{
const pjmedia_video_format_info *vfi;
pjmedia_video_format_detail *vfd;
pjmedia_format *fmt = (pjmedia_format *)pval;
darwin_fmt_info *ifi;
if (!(ifi = get_darwin_format_info(fmt->id)))
return PJMEDIA_EVID_BADFORMAT;
vfi = pjmedia_get_video_format_info(
pjmedia_video_format_mgr_instance(),
fmt->id);
if (!vfi)
return PJMEDIA_EVID_BADFORMAT;
pjmedia_format_copy(&strm->param.fmt, fmt);
vfd = pjmedia_format_get_video_format_detail(fmt, PJ_TRUE);
pj_memcpy(&strm->size, &vfd->size, sizeof(vfd->size));
strm->bytes_per_row = strm->size.w * vfi->bpp / 8;
strm->frame_size = strm->bytes_per_row * strm->size.h;
if (strm->render_buf_size < strm->frame_size) {
/* Realloc only when needed */
strm->render_buf = pj_pool_alloc(strm->pool, strm->frame_size);
strm->render_buf_size = strm->frame_size;
CGDataProviderRelease(strm->render_data_provider);
strm->render_data_provider = CGDataProviderCreateWithData(NULL,
strm->render_buf,
strm->frame_size,
NULL);
}
return PJ_SUCCESS;
}
case PJMEDIA_VID_DEV_CAP_OUTPUT_WINDOW:
{
UIView *view = (UIView *)pval;
strm->param.window.info.ios.window = (void *)pval;
dispatch_sync_on_main_queue(^{
[view addSubview:strm->render_view];
});
return PJ_SUCCESS;
}
case PJMEDIA_VID_DEV_CAP_OUTPUT_RESIZE:
{
pj_memcpy(&strm->param.disp_size, pval,
sizeof(strm->param.disp_size));
dispatch_sync_on_main_queue(^{
CGRect r = strm->render_view.bounds;
r.size = CGSizeMake(strm->param.disp_size.w,
strm->param.disp_size.h);
strm->render_view.bounds = r;
});
return PJ_SUCCESS;
}
case PJMEDIA_VID_DEV_CAP_OUTPUT_POSITION:
{
pj_memcpy(&strm->param.window_pos, pval,
sizeof(strm->param.window_pos));
dispatch_sync_on_main_queue(^{
strm->render_view.center =
CGPointMake(strm->param.window_pos.x +
strm->param.disp_size.w/2.0,
strm->param.window_pos.y +
strm->param.disp_size.h/2.0);
});
return PJ_SUCCESS;
}
case PJMEDIA_VID_DEV_CAP_OUTPUT_HIDE:
{
dispatch_sync_on_main_queue(^{
strm->render_view.hidden = (BOOL)(*((pj_bool_t *)pval));
});
return PJ_SUCCESS;
}
#endif /* TARGET_OS_IPHONE */
case PJMEDIA_VID_DEV_CAP_ORIENTATION:
{
pjmedia_orient orient = *(pjmedia_orient *)pval;
pj_bool_t support_ori = PJ_FALSE;
pj_assert(orient >= PJMEDIA_ORIENT_UNKNOWN &&
orient <= PJMEDIA_ORIENT_ROTATE_270DEG);
if (orient == PJMEDIA_ORIENT_UNKNOWN)
return PJ_EINVAL;
pj_memcpy(&strm->param.orient, pval,
sizeof(strm->param.orient));
if (strm->param.dir == PJMEDIA_DIR_RENDER) {
#if TARGET_OS_IPHONE
dispatch_sync_on_main_queue(^{
strm->render_view.transform =
CGAffineTransformMakeRotation(
((int)strm->param.orient-1) * -M_PI_2);
});
#endif
return PJ_SUCCESS;
}
pj_assert(strm->param.dir == PJMEDIA_DIR_CAPTURE);
if (!strm->video_output)
return PJMEDIA_EVID_NOTREADY;
#if (TARGET_OS_IPHONE && defined(__IPHONE_17_0)) || \
(TARGET_OS_OSX && defined(__MAC_14_0))
if (@available(macOS 14.0, iOS 17.0, *)) {
const CGFloat cap_ori[4] = { 0, 90, 180, 270};
AVCaptureConnection *vidcon;
vidcon = [strm->video_output
connectionWithMediaType:AVMediaTypeVideo];
if ([vidcon isVideoRotationAngleSupported:
cap_ori[strm->param.orient-1]])
{
vidcon.videoRotationAngle = cap_ori[strm->param.orient-1];
support_ori = PJ_TRUE;
}
} else {
support_ori = set_orientation(strm);
}
#else
support_ori = set_orientation(strm);
#endif
if (!strm->conv.conv) {
pj_status_t status;
pjmedia_rect_size orig_size;
/* Original native size of device is landscape */
orig_size.w = (strm->size.w > strm->size.h? strm->size.w :
strm->size.h);
orig_size.h = (strm->size.w > strm->size.h? strm->size.h :
strm->size.w);
if (!support_ori) {
PJ_LOG(4, (THIS_FILE, "Native video capture orientation "
"unsupported, will use converter's "
"rotation."));
}
status = pjmedia_vid_dev_conv_create_converter(
&strm->conv, strm->pool,
&strm->param.fmt,
orig_size, strm->size,
(support_ori?PJ_FALSE:PJ_TRUE),
MAINTAIN_ASPECT_RATIO);
if (status != PJ_SUCCESS)
return status;
}
pjmedia_vid_dev_conv_set_rotation(&strm->conv, strm->param.orient);
PJ_LOG(5, (THIS_FILE, "Video capture orientation set to %d",
strm->param.orient));
return PJ_SUCCESS;
}
default:
break;
}
return PJMEDIA_EVID_INVCAP;
}
/* API: Start stream. */
static pj_status_t darwin_stream_start(pjmedia_vid_dev_stream *strm)
{
struct darwin_stream *stream = (struct darwin_stream*)strm;
PJ_LOG(4, (THIS_FILE, "Starting Darwin video stream"));
stream->is_running = PJ_TRUE;
if (stream->cap_session) {
[stream->cap_session
performSelectorOnMainThread:@selector(startRunning)
withObject:nil waitUntilDone:YES];
if (![stream->cap_session isRunning]) {
/* More info about the error should be reported in
* VOutDelegate::session_runtime_error()
*/
PJ_LOG(3, (THIS_FILE, "Unable to start AVFoundation capture "
"session"));
return PJ_EUNKNOWN;
}
}
return PJ_SUCCESS;
}
/* API: Put frame from stream */
static pj_status_t darwin_stream_put_frame(pjmedia_vid_dev_stream *strm,
const pjmedia_frame *frame)
{
#if TARGET_OS_IPHONE
struct darwin_stream *stream = (struct darwin_stream*)strm;
/* Video conference just trying to send heart beat for updating timestamp
* or keep-alive, this port doesn't need any, just ignore.
*/
if (frame->size==0 || frame->buf==NULL)
return PJ_SUCCESS;
if (!stream->is_running)
return PJ_EINVALIDOP;
/* Prevent more than one async rendering task. */
if (stream->is_rendering)
return PJ_EIGNORED;
if (stream->frame_size >= frame->size)
pj_memcpy(stream->render_buf, frame->buf, frame->size);
else
pj_memcpy(stream->render_buf, frame->buf, stream->frame_size);
/* Perform video display in the main thread */
stream->is_rendering = PJ_TRUE;
[stream->vout_delegate performSelectorOnMainThread:@selector(update_image)
withObject:nil waitUntilDone:NO];
#endif
return PJ_SUCCESS;
}
/* API: Stop stream. */
static pj_status_t darwin_stream_stop(pjmedia_vid_dev_stream *strm)
{
struct darwin_stream *stream = (struct darwin_stream*)strm;
if (!stream->cap_session || ![stream->cap_session isRunning])
return PJ_SUCCESS;
PJ_LOG(4, (THIS_FILE, "Stopping Darwin video stream"));
[stream->cap_session performSelectorOnMainThread:@selector(stopRunning)
withObject:nil waitUntilDone:YES];
stream->has_image = PJ_FALSE;
stream->is_running = PJ_FALSE;
#if TARGET_OS_IPHONE
/* Wait until the rendering finishes */
[stream->vout_delegate performSelectorOnMainThread:@selector(finish_render)
withObject:nil waitUntilDone:YES];
#endif
return PJ_SUCCESS;
}
/* API: Destroy stream. */
static pj_status_t darwin_stream_destroy(pjmedia_vid_dev_stream *strm)
{
struct darwin_stream *stream = (struct darwin_stream*)strm;
PJ_ASSERT_RETURN(stream != NULL, PJ_EINVAL);
darwin_stream_stop(strm);
if (stream->cap_session) {
if (stream->dev_input) {
[stream->cap_session removeInput:stream->dev_input];
stream->dev_input = nil;
}
[stream->cap_session removeOutput:stream->video_output];
[stream->cap_session release];
stream->cap_session = nil;
}
if (stream->video_output) {
[stream->video_output release];
stream->video_output = nil;
}
if (stream->vout_delegate) {
[stream->vout_delegate release];
stream->vout_delegate = nil;
}
#if TARGET_OS_IPHONE
if (stream->prev_layer) {
[stream->prev_layer
performSelectorOnMainThread:@selector(removeFromSuperlayer)
withObject:nil waitUntilDone:YES];
[stream->prev_layer release];
stream->prev_layer = nil;
}
if (stream->render_view) {
[stream->render_view
performSelectorOnMainThread:@selector(removeFromSuperview)
withObject:nil waitUntilDone:YES];
[stream->render_view release];
stream->render_view = nil;
}
if (stream->prev_view) {
[stream->prev_view
performSelectorOnMainThread:@selector(removeFromSuperview)
withObject:nil waitUntilDone:YES];
[stream->prev_view release];
stream->prev_view = nil;
}
if (stream->render_data_provider) {
CGDataProviderRelease(stream->render_data_provider);
stream->render_data_provider = nil;
}
#endif /* TARGET_OS_IPHONE */
if (stream->queue) {
dispatch_release(stream->queue);
stream->queue = nil;
}
if (stream->frame_lock) {
[stream->frame_lock release];
stream->frame_lock = nil;
}
pjmedia_vid_dev_conv_destroy_converter(&stream->conv);
pj_pool_release(stream->pool);
return PJ_SUCCESS;
}
#endif /* PJMEDIA_VIDEO_DEV_HAS_DARWIN */
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