avfoundation.m File Reference

AVFoundation input device. More...

#import <AVFoundation/AVFoundation.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"

Go to the source code of this file.

Data Structures
struct	AVFPixelFormatSpec
struct	AVFContext
class	AVFFrameReceiver
	FrameReciever class - delegate for AVCaptureSession. More...

Functions
static void	lock_frames (AVFContext *ctx)
static void	unlock_frames (AVFContext *ctx)
static void	destroy_context (AVFContext *ctx)
static int	avf_read_header (AVFormatContext *s)
static int	avf_read_packet (AVFormatContext *s, AVPacket *pkt)
static int	avf_close (AVFormatContext *s)

Variables
static const int	avf_time_base = 100
static const AVRational	avf_time_base_q
static struct AVFPixelFormatSpec	avf_pixel_formats []
static const AVOption	options []
static const AVClass	avf_class
AVInputFormat	ff_avfoundation_demuxer

Detailed Description

AVFoundation input device.

Author

Thilo Borgmann thilo.nosp@m..bor.nosp@m.gmann.nosp@m.@mai.nosp@m.l.de

Definition in file avfoundation.m.

Function Documentation

static void lock_frames ( AVFContext *  ctx )

static

Definition at line 99 of file avfoundation.m.

Referenced by avf_read_header(), avf_read_packet(), and AVFFrameReceiver::captureOutput:didOutputSampleBuffer:fromConnection:.

static void unlock_frames ( AVFContext *  ctx )

static

Definition at line 104 of file avfoundation.m.

Referenced by avf_read_header(), avf_read_packet(), and AVFFrameReceiver::captureOutput:didOutputSampleBuffer:fromConnection:.

static void destroy_context ( AVFContext *  ctx )

static

Definition at line 155 of file avfoundation.m.

Referenced by avf_close(), and avf_read_header().

static int avf_read_header ( AVFormatContext *  s )

static

Definition at line 175 of file avfoundation.m.

static int avf_read_packet ( AVFormatContext *  s, AVPacket *  pkt  )

static

Definition at line 393 of file avfoundation.m.

static int avf_close ( AVFormatContext *  s )

static

Definition at line 432 of file avfoundation.m.

Variable Documentation

const int avf_time_base = 100

static

Definition at line 38 of file avfoundation.m.

Referenced by avf_read_header().

const AVRational avf_time_base_q

static

Initial value:

= {
    .num = 1,
    .den = avf_time_base
}

Definition at line 40 of file avfoundation.m.

struct AVFPixelFormatSpec avf_pixel_formats[]

static

Initial value:

= {
    { AV_PIX_FMT_MONOBLACK,    kCVPixelFormatType_1Monochrome },
    { AV_PIX_FMT_RGB555BE,     kCVPixelFormatType_16BE555 },
    { AV_PIX_FMT_RGB555LE,     kCVPixelFormatType_16LE555 },
    { AV_PIX_FMT_RGB565BE,     kCVPixelFormatType_16BE565 },
    { AV_PIX_FMT_RGB565LE,     kCVPixelFormatType_16LE565 },
    { AV_PIX_FMT_RGB24,        kCVPixelFormatType_24RGB },
    { AV_PIX_FMT_BGR24,        kCVPixelFormatType_24BGR },
    { AV_PIX_FMT_0RGB,         kCVPixelFormatType_32ARGB },
    { AV_PIX_FMT_BGR0,         kCVPixelFormatType_32BGRA },
    { AV_PIX_FMT_0BGR,         kCVPixelFormatType_32ABGR },
    { AV_PIX_FMT_RGB0,         kCVPixelFormatType_32RGBA },
    { AV_PIX_FMT_BGR48BE,      kCVPixelFormatType_48RGB },
    { AV_PIX_FMT_UYVY422,      kCVPixelFormatType_422YpCbCr8 },
    { AV_PIX_FMT_YUVA444P,     kCVPixelFormatType_4444YpCbCrA8R },
    { AV_PIX_FMT_YUVA444P16LE, kCVPixelFormatType_4444AYpCbCr16 },
    { AV_PIX_FMT_YUV444P,      kCVPixelFormatType_444YpCbCr8 },
    { AV_PIX_FMT_YUV422P16,    kCVPixelFormatType_422YpCbCr16 },
    { AV_PIX_FMT_YUV422P10,    kCVPixelFormatType_422YpCbCr10 },
    { AV_PIX_FMT_YUV444P10,    kCVPixelFormatType_444YpCbCr10 },
    { AV_PIX_FMT_YUV420P,      kCVPixelFormatType_420YpCbCr8Planar },
    { AV_PIX_FMT_NV12,         kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange },
    { AV_PIX_FMT_YUYV422,      kCVPixelFormatType_422YpCbCr8_yuvs },



    { AV_PIX_FMT_NONE, 0 }
}

Definition at line 50 of file avfoundation.m.

const AVOption options[]

static

Initial value:

= {
    { "frame_rate", "set frame rate", 0x42, AV_OPT_TYPE_FLOAT, { .dbl = 30.0 }, 0.1, 30.0, AV_OPT_TYPE_VIDEO_RATE, NULL },
    { "list_devices", "list available devices", 0x42, 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)", 0x42, AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
    { "pixel_format", "set pixel format", 0x42, AV_OPT_TYPE_PIXEL_FMT, {.i64 = AV_PIX_FMT_YUV420P}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM},
    { NULL },
}

Definition at line 439 of file avfoundation.m.

const AVClass avf_class

static

Initial value:

= {
    .class_name = "AVFoundation input device",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 449 of file avfoundation.m.

AVInputFormat ff_avfoundation_demuxer

Initial value:

= {
    .name           = "avfoundation",
    .long_name      = NULL_IF_CONFIG_SMALL("AVFoundation input device"),
    .priv_data_size = sizeof(AVFContext),
    .read_header    = avf_read_header,
    .read_packet    = avf_read_packet,
    .read_close     = avf_close,
    .flags          = AVFMT_NOFILE,
    .priv_class     = &avf_class,
}

Definition at line 456 of file avfoundation.m.