movie.c File Reference

Functions to encode a movie / render an image from the OpenGL rendering. More...

#include "global.h"
#include "interface.h"
#include "project.h"
#include "glwindow.h"
#include "glview.h"
#include "movie.h"

Include dependency graph for movie.c:

Go to the source code of this file.

Macros
#define	PIXEL_FORMAT   PIX_FMT_YUV420P
#define	AVS_FRAME_ALIGN   16
#define	RGB_TO_Y(pixels, loc)   (0.29900 * pixels[loc] + 0.58700 * pixels[loc+1] + 0.11400 * pixels[loc+2])
#define	RGB_TO_U(pixels, loc)   (-0.16874 * pixels[loc] - 0.33126 * pixels[loc+1] + 0.50000 * pixels[loc+2]+128.0)
#define	RGB_TO_V(pixels, loc)   (0.50000 * pixels[loc] - 0.41869 * pixels[loc+1] - 0.08131 * pixels[loc+2]+128.0)
#define	AVIO_FLAG_READ   1
#define	AVIO_FLAG_WRITE   2
#define	AVIO_FLAG_READ_WRITE   (AVIO_FLAG_READ|AVIO_FLAG_WRITE)
#define	AV_ROUND_PASS_MINMAX   8192
#define	URL_WRONLY   1

Functions
void	convert_rgb_pixbuf_to_yuv (GdkPixbuf *pixbuf, AVFrame *picture, int w, int h)
	convert an RGB pixbuf to an YUV picture frame
void	fill_image (VideoStream *vs, int width, int height, glwin *view)
	render an image from an OpenGL rendering
AVCodecContext *	add_codec_context (AVFormatContext *fc, const AVCodec *vc, video_options *vopts)
	create a video codec context
VideoStream *	add_video_stream (AVFormatContext *fc, const AVCodec *vc, video_options *vopts)
	create video stream and the associated data buffers
void	set_old_cmap (image *img, int stp, int id)
	preserve color map information
gboolean	check_to_update_shaders (glwin *view, image *img_a, image *img_b, int ogl_q)
	test if it is required to update the OpenGL shaders, and which one(s)
gboolean	create_movie (glwin *view, video_options *vopts, gchar *videofile)
	render a movie from the saved animation parameters
void	init_frame_buffer (int x, int y)
	init a frame buffer
void	close_frame_buffer ()
	close the frame buffer
G_MODULE_EXPORT void	run_save_movie (GtkDialog *info, gint response_id, gpointer data)
	saving a movie - running the dialog
void	save_movie (glwin *view, video_options *vopts)
	saving a movie - prepare the dialog

Variables
char *	codec_name [VIDEO_CODECS]
char *	codec_list [VIDEO_CODECS]
int	codec_id [VIDEO_CODECS]
GdkPixbuf *	pixbuf
uint8_t *	video_outbuf
int	video_outbuf_size
int	num_frames
int	frame_start
int *	old_cmap [2]
GtkWidget *	encoding_pb

Detailed Description

Functions to encode a movie / render an image from the OpenGL rendering.

Author

Sébastien Le Roux sebas.nosp@m.tien.nosp@m..lero.nosp@m.ux@i.nosp@m.pcms..nosp@m.unis.nosp@m.tra.f.nosp@m.r

Definition in file movie.c.

Macro Definition Documentation

AV_ROUND_PASS_MINMAX

#define AV_ROUND_PASS_MINMAX   8192

Definition at line 83 of file movie.c.

AVIO_FLAG_READ

#define AVIO_FLAG_READ   1

Definition at line 78 of file movie.c.

AVIO_FLAG_READ_WRITE

#define AVIO_FLAG_READ_WRITE   (AVIO_FLAG_READ|AVIO_FLAG_WRITE)

Definition at line 80 of file movie.c.

AVIO_FLAG_WRITE

#define AVIO_FLAG_WRITE   2

Definition at line 79 of file movie.c.

AVS_FRAME_ALIGN

#define AVS_FRAME_ALIGN   16

Definition at line 72 of file movie.c.

PIXEL_FORMAT

#define PIXEL_FORMAT   PIX_FMT_YUV420P

Definition at line 67 of file movie.c.

RGB_TO_U

#define RGB_TO_U	(		pixels,
			loc )   (-0.16874 * pixels[loc] - 0.33126 * pixels[loc+1] + 0.50000 * pixels[loc+2]+128.0)

Definition at line 75 of file movie.c.

RGB_TO_V

#define RGB_TO_V	(		pixels,
			loc )   (0.50000 * pixels[loc] - 0.41869 * pixels[loc+1] - 0.08131 * pixels[loc+2]+128.0)

Definition at line 76 of file movie.c.

RGB_TO_Y

#define RGB_TO_Y	(		pixels,
			loc )   (0.29900 * pixels[loc] + 0.58700 * pixels[loc+1] + 0.11400 * pixels[loc+2])

Definition at line 74 of file movie.c.

URL_WRONLY

#define URL_WRONLY   1

Definition at line 87 of file movie.c.

Function Documentation

add_codec_context()

AVCodecContext * add_codec_context	(	AVFormatContext *	fc,
		const AVCodec *	vc,
		video_options *	vopts )

create a video codec context

Parameters

fc	the format context
vc	the codec
vopts	the video encoding options

Definition at line 396 of file movie.c.

add_video_stream()

VideoStream * add_video_stream	(	AVFormatContext *	fc,
		const AVCodec *	vc,
		video_options *	vopts )

create video stream and the associated data buffers

Parameters

fc	the format context
vc	the codec
vopts	the video encoding options

Definition at line 451 of file movie.c.

check_to_update_shaders()

gboolean check_to_update_shaders	(	glwin *	view,
		image *	img_a,
		image *	img_b,
		int	ogl_q )

test if it is required to update the OpenGL shaders, and which one(s)

Parameters

view	the target glwin
img_a	the previous image
img_b	the next image
ogl_q	OpenGL quality

Definition at line 519 of file movie.c.

close_frame_buffer()

void close_frame_buffer

(

)

close the frame buffer

Definition at line 1206 of file movie.c.

convert_rgb_pixbuf_to_yuv()

void convert_rgb_pixbuf_to_yuv	(	GdkPixbuf *	pixbuf,
		AVFrame *	picture,
		int	w,
		int	h )

convert an RGB pixbuf to an YUV picture frame

Parameters

pixbuf	the Gdk RGB pixbuf to convert
picture	the AVFrame to store the data
w	image width
h	image height

Definition at line 138 of file movie.c.

create_movie()

gboolean create_movie	(	glwin *	view,
		video_options *	vopts,
		gchar *	videofile )

render a movie from the saved animation parameters

Parameters

view	the target glwin
vopts	the video encoding options
videofile	video file name

Definition at line 1003 of file movie.c.

fill_image()

void fill_image	(	VideoStream *	vs,
		int	width,
		int	height,
		glwin *	view )

render an image from an OpenGL rendering

Parameters

vs	the video stream
width	image width
height	image height
view	the target glwin

Definition at line 273 of file movie.c.

init_frame_buffer()

void init_frame_buffer	(	int	x,
		int	y )

init a frame buffer

Parameters

x	x size - image width
y	y size - image height

Definition at line 1178 of file movie.c.

run_save_movie()

G_MODULE_EXPORT void run_save_movie	(	GtkDialog *	info,
		gint	response_id,
		gpointer	data )

saving a movie - running the dialog

Parameters

info	the GtkDialog sending the signal
response_id	the response id
data	the associated data pointer

Definition at line 1236 of file movie.c.

save_movie()

void save_movie	(	glwin *	view,
		video_options *	vopts )

saving a movie - prepare the dialog

Parameters

view	the target glwin
vopts	the video encoding options

Definition at line 1291 of file movie.c.

set_old_cmap()

void set_old_cmap	(	image *	img,
		int	stp,
		int	id )

preserve color map information

Parameters

img	the target image
stp	MD step
id	color map id (0 = atom(s), 1 = polyhedra)

Definition at line 504 of file movie.c.

Variable Documentation

codec_id

int codec_id[VIDEO_CODECS]

Initial value:

= {CODEC_ID_MPEG2VIDEO,
                              CODEC_ID_MPEG4,
                              CODEC_ID_H264,
                              CODEC_ID_THEORA,
                              CODEC_ID_FLV1}

Definition at line 109 of file movie.c.

codec_list

char* codec_list[VIDEO_CODECS]

Initial value:

= {"mpeg",
                                   "avi",
                                   "mkv",
                                   "ogv",
                                   "flv"}

Definition at line 96 of file movie.c.

codec_name

char* codec_name[VIDEO_CODECS]

Initial value:

= {"MPEG-1/2",
                                   "MPEG-4",
                                   "H264",
                                   "Theora",
                                   "Flash"}

Definition at line 90 of file movie.c.

encoding_pb

GtkWidget* encoding_pb

extern

Definition at line 266 of file w_encode.c.

frame_start

int frame_start

Definition at line 126 of file movie.c.

num_frames

int num_frames

Definition at line 125 of file movie.c.

old_cmap

int* old_cmap[2]

Definition at line 493 of file movie.c.

pixbuf

GdkPixbuf* pixbuf

Definition at line 122 of file movie.c.

video_outbuf

uint8_t* video_outbuf

Definition at line 123 of file movie.c.

video_outbuf_size

int video_outbuf_size

Definition at line 124 of file movie.c.