android_camera.c File Reference

#include <errno.h>
#include <pthread.h>
#include <stdatomic.h>
#include <stdbool.h>
#include <stdint.h>
#include <unistd.h>
#include <camera/NdkCameraDevice.h>
#include <camera/NdkCameraManager.h>
#include <media/NdkImage.h>
#include <media/NdkImageReader.h>
#include "libavformat/avformat.h"
#include "libavformat/demux.h"
#include "libavformat/internal.h"
#include "libavutil/avstring.h"
#include "libavutil/display.h"
#include "libavutil/imgutils.h"
#include "libavutil/log.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixfmt.h"
#include "libavutil/threadmessage.h"
#include "libavutil/time.h"

Go to the source code of this file.

Data Structures
struct	AndroidCameraCtx

Macros
#define	IMAGE_FORMAT_ANDROID   AIMAGE_FORMAT_YUV_420_888
#define	MAX_BUF_COUNT   2
#define	VIDEO_STREAM_INDEX   0
#define	VIDEO_TIMEBASE_ANDROID   1000000000
#define	RETURN_CASE(x)
#define	RETURN_DEFAULT(x)
#define	OFFSET(x)
#define	DEC   AV_OPT_FLAG_DECODING_PARAM

Functions
static const char *	camera_status_string (camera_status_t val)
static const char *	media_status_string (media_status_t val)
static const char *	error_state_callback_string (int val)
static void	camera_dev_disconnected (void *context, ACameraDevice *device)
static void	camera_dev_error (void *context, ACameraDevice *device, int error)
static int	open_camera (AVFormatContext *avctx)
static void	get_sensor_orientation (AVFormatContext *avctx)
static void	match_video_size (AVFormatContext *avctx)
static void	match_framerate (AVFormatContext *avctx)
static int	get_image_format (AVFormatContext *avctx, AImage *image)
static void	image_available (void *context, AImageReader *reader)
static int	create_image_reader (AVFormatContext *avctx)
static void	capture_session_closed (void *context, ACameraCaptureSession *session)
static void	capture_session_ready (void *context, ACameraCaptureSession *session)
static void	capture_session_active (void *context, ACameraCaptureSession *session)
static int	create_capture_session (AVFormatContext *avctx)
static int	wait_for_image_format (AVFormatContext *avctx)
static int	add_display_matrix (AVFormatContext *avctx, AVStream *st)
static int	add_video_stream (AVFormatContext *avctx)
static int	android_camera_read_close (AVFormatContext *avctx)
static int	android_camera_read_header (AVFormatContext *avctx)
static int	android_camera_read_packet (AVFormatContext *avctx, AVPacket *pkt)

Variables
static const AVOption	options []
static const AVClass	android_camera_class
const FFInputFormat	ff_android_camera_demuxer

Macro Definition Documentation

IMAGE_FORMAT_ANDROID

#define IMAGE_FORMAT_ANDROID   AIMAGE_FORMAT_YUV_420_888

Definition at line 51 of file android_camera.c.

Referenced by create_image_reader(), and match_video_size().

MAX_BUF_COUNT

#define MAX_BUF_COUNT   2

Definition at line 53 of file android_camera.c.

Referenced by create_image_reader().

VIDEO_STREAM_INDEX

#define VIDEO_STREAM_INDEX   0

Definition at line 54 of file android_camera.c.

Referenced by add_video_stream(), and image_available().

VIDEO_TIMEBASE_ANDROID

#define VIDEO_TIMEBASE_ANDROID   1000000000

Definition at line 55 of file android_camera.c.

Referenced by add_video_stream().

RETURN_CASE

#define RETURN_CASE

(

x

)

Value:

case x: return AV_STRINGIFY(x);

Definition at line 57 of file android_camera.c.

Referenced by camera_status_string(), error_state_callback_string(), and media_status_string().

RETURN_DEFAULT

#define RETURN_DEFAULT

(

x

)

Value:

default: return AV_STRINGIFY(x);

Definition at line 58 of file android_camera.c.

Referenced by camera_status_string(), and media_status_string().

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(AndroidCameraCtx, x)

Definition at line 847 of file android_camera.c.

DEC

#define DEC   AV_OPT_FLAG_DECODING_PARAM

Definition at line 848 of file android_camera.c.

Function Documentation

camera_status_string()

static const char * camera_status_string ( camera_status_t val )

static

Definition at line 96 of file android_camera.c.

Referenced by create_capture_session(), and open_camera().

media_status_string()

static const char * media_status_string ( media_status_t val )

static

Definition at line 118 of file android_camera.c.

Referenced by create_image_reader(), and image_available().

error_state_callback_string()

static const char * error_state_callback_string ( int val )

static

Definition at line 146 of file android_camera.c.

Referenced by camera_dev_error().

camera_dev_disconnected()

static void camera_dev_disconnected ( void * context, ACameraDevice * device )

static

Definition at line 159 of file android_camera.c.

Referenced by open_camera().

camera_dev_error()

static void camera_dev_error ( void * context, ACameraDevice * device, int error )

static

Definition at line 168 of file android_camera.c.

Referenced by open_camera().

open_camera()

static int open_camera ( AVFormatContext * avctx )

static

Definition at line 177 of file android_camera.c.

Referenced by android_camera_read_header().

get_sensor_orientation()

static void get_sensor_orientation ( AVFormatContext * avctx )

static

Definition at line 227 of file android_camera.c.

Referenced by android_camera_read_header().

match_video_size()

static void match_video_size ( AVFormatContext * avctx )

static

Definition at line 242 of file android_camera.c.

Referenced by android_camera_read_header().

match_framerate()

static void match_framerate ( AVFormatContext * avctx )

static

Definition at line 287 of file android_camera.c.

Referenced by android_camera_read_header().

get_image_format()

static int get_image_format ( AVFormatContext * avctx, AImage * image )

static

Definition at line 338 of file android_camera.c.

Referenced by image_available().

image_available()

static void image_available ( void * context, AImageReader * reader )

static

Definition at line 377 of file android_camera.c.

Referenced by create_image_reader().

create_image_reader()

static int create_image_reader ( AVFormatContext * avctx )

static

Definition at line 489 of file android_camera.c.

Referenced by android_camera_read_header().

capture_session_closed()

static void capture_session_closed ( void * context, ACameraCaptureSession * session )

static

Definition at line 524 of file android_camera.c.

Referenced by create_capture_session().

capture_session_ready()

static void capture_session_ready ( void * context, ACameraCaptureSession * session )

static

Definition at line 529 of file android_camera.c.

Referenced by create_capture_session().

capture_session_active()

static void capture_session_active ( void * context, ACameraCaptureSession * session )

static

Definition at line 534 of file android_camera.c.

Referenced by create_capture_session().

create_capture_session()

static int create_capture_session ( AVFormatContext * avctx )

static

Definition at line 539 of file android_camera.c.

Referenced by android_camera_read_header().

wait_for_image_format()

static int wait_for_image_format ( AVFormatContext * avctx )

static

Definition at line 629 of file android_camera.c.

Referenced by add_video_stream().

add_display_matrix()

static int add_display_matrix ( AVFormatContext * avctx, AVStream * st )

static

Definition at line 641 of file android_camera.c.

Referenced by add_video_stream().

add_video_stream()

static int add_video_stream ( AVFormatContext * avctx )

static

Definition at line 667 of file android_camera.c.

Referenced by android_camera_read_header().

android_camera_read_close()

static int android_camera_read_close ( AVFormatContext * avctx )

static

Definition at line 698 of file android_camera.c.

Referenced by android_camera_read_header().

android_camera_read_header()

static int android_camera_read_header ( AVFormatContext * avctx )

static

Definition at line 775 of file android_camera.c.

android_camera_read_packet()

static int android_camera_read_packet ( AVFormatContext * avctx, AVPacket * pkt )

static

Definition at line 828 of file android_camera.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
    { "video_size", "set video size given as a string such as 640x480 or hd720", OFFSET(requested_width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC },
    { "framerate", "set video frame rate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "30"}, 0, INT_MAX, DEC },
    { "camera_index", "set index of camera to use", OFFSET(camera_index), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, DEC },
    { "input_queue_size", "set maximum number of frames to buffer", OFFSET(input_queue_size), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, DEC },
    { NULL },
}

Definition at line 849 of file android_camera.c.

android_camera_class

const AVClass android_camera_class

static

Initial value:

= {
    .class_name = "android_camera indev",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
    .category   = AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT,
}

Definition at line 857 of file android_camera.c.

ff_android_camera_demuxer

const FFInputFormat ff_android_camera_demuxer

Initial value:

= {
    .p.name         = "android_camera",
    .p.long_name    = NULL_IF_CONFIG_SMALL("Android camera input device"),
    .p.flags        = AVFMT_NOFILE,
    .p.priv_class   = &android_camera_class,
    .priv_data_size = sizeof(AndroidCameraCtx),
    .read_header    = android_camera_read_header,
    .read_packet    = android_camera_read_packet,
    .read_close     = android_camera_read_close,
}

Definition at line 865 of file android_camera.c.