opengl_enc.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stddef.h>
#include "config.h"
#include <GL/gl.h>
#include <GL/glext.h>
#include "libavutil/common.h"
#include "libavutil/pixdesc.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavformat/avformat.h"
#include "libavformat/internal.h"
#include "libavdevice/avdevice.h"
#include "opengl_enc_shaders.h"

Go to the source code of this file.

Data Structures
struct	FFOpenGLFunctions
struct	OpenGLVertexInfo
struct	OpenGLContext
struct	OpenGLFormatDesc

Macros
#define	APIENTRY
#define	FF_GL_RED_COMPONENT   0x1903;
#define	FF_GL_UNSIGNED_BYTE_3_3_2   0x8032
#define	FF_GL_UNSIGNED_BYTE_2_3_3_REV   0x8362
#define	FF_GL_UNSIGNED_SHORT_1_5_5_5_REV   0x8366
#define	FF_GL_UNPACK_ROW_LENGTH   0x0CF2
#define	FF_GL_ARRAY_BUFFER   0x8892
#define	FF_GL_ELEMENT_ARRAY_BUFFER   0x8893
#define	FF_GL_STATIC_DRAW   0x88E4
#define	FF_GL_FRAGMENT_SHADER   0x8B30
#define	FF_GL_VERTEX_SHADER   0x8B31
#define	FF_GL_COMPILE_STATUS   0x8B81
#define	FF_GL_LINK_STATUS   0x8B82
#define	FF_GL_INFO_LOG_LENGTH   0x8B84
#define	OPENGL_ERROR_CHECK(ctx)
#define	LOAD_OPENGL_FUN(name, type)
#define	FILL_COMPONENT(i)
#define	LOAD_TEXTURE_DATA(comp_index, sub)
#define	OFFSET(x)   offsetof(OpenGLContext, x)
#define	ENC   AV_OPT_FLAG_ENCODING_PARAM

Typedefs
typedef GLuint *	buffers
typedef ptrdiff_t	size
typedef ptrdiff_t const GLvoid *	data
typedef ptrdiff_t const GLvoid GLenum	usage
typedef GLuint	buffer
typedef const char *	name
typedef GLint GLenum	type
typedef GLint GLenum GLboolean	normalized
typedef GLint GLenum GLboolean GLsizei	stride
typedef GLint GLenum GLboolean GLsizei uintptr_t	pointer
typedef GLfloat	v0
typedef GLsizei	count
typedef GLsizei GLboolean	transpose
typedef GLsizei GLboolean const GLfloat *	value
typedef GLenum	pname
typedef GLenum GLint *	params
typedef GLsizei	bufSize
typedef GLsizei GLsizei *	length
typedef GLsizei GLsizei char *	infoLog
typedef GLuint	shader
typedef GLsizei const char **	string

Functions
typedef	void (APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
typedef	GLint (APIENTRY *FF_PFNGLGETATTRIBLOCATIONPROC)(GLuint program
typedef	GLuint (APIENTRY *FF_PFNGLCREATEPROGRAMPROC)(void)
static av_cold int	opengl_prepare_vertex (AVFormatContext *s)
static int	opengl_draw (AVFormatContext *h, void *intput, int repaint, int is_pkt)
static av_cold int	opengl_init_context (OpenGLContext *opengl)
static av_cold void	opengl_deinit_context (OpenGLContext *opengl)
static int	opengl_resize (AVFormatContext *h, int width, int height)
static int	opengl_control_message (AVFormatContext *h, int type, void *data, size_t data_size)
static int av_cold	opengl_load_procedures (OpenGLContext *opengl)
static void	opengl_make_identity (float matrix[16])
static void	opengl_make_ortho (float matrix[16], float left, float right, float bottom, float top, float nearZ, float farZ)
static av_cold int	opengl_read_limits (OpenGLContext *opengl)
static const char *	opengl_get_fragment_shader_code (enum AVPixelFormat format)
static int	opengl_type_size (GLenum type)
static av_cold void	opengl_get_texture_params (OpenGLContext *opengl)
static void	opengl_compute_display_area (AVFormatContext *s)
static av_cold void	opengl_get_texture_size (OpenGLContext *opengl, int in_width, int in_height, int *out_width, int *out_height)
static av_cold void	opengl_fill_color_map (OpenGLContext *opengl)
static av_cold GLuint	opengl_load_shader (OpenGLContext *opengl, GLenum type, const char *source)
static av_cold int	opengl_compile_shaders (OpenGLContext *opengl, enum AVPixelFormat pix_fmt)
static av_cold int	opengl_configure_texture (OpenGLContext *opengl, GLuint texture, GLsizei width, GLsizei height)
static int	opengl_prepare (OpenGLContext *opengl)
static int	opengl_create_window (AVFormatContext *h)
static int	opengl_release_window (AVFormatContext *h)
static av_cold int	opengl_write_trailer (AVFormatContext *h)
static av_cold int	opengl_write_header (AVFormatContext *h)
static uint8_t *	opengl_get_plane_pointer (OpenGLContext *opengl, AVPacket *pkt, int comp_index, const AVPixFmtDescriptor *desc)
static int	opengl_write_packet (AVFormatContext *h, AVPacket *pkt)
static int	opengl_write_frame (AVFormatContext *h, int stream_index, AVFrame **frame, unsigned flags)

Variables
static GLushort	g_index [6]
static struct OpenGLFormatDesc	opengl_format_desc []
static const AVOption	options []
static const AVClass	opengl_class
AVOutputFormat	ff_opengl_muxer

Macro Definition Documentation

#define APIENTRY

Definition at line 64 of file opengl_enc.c.

#define FF_GL_RED_COMPONENT   0x1903;

Definition at line 79 of file opengl_enc.c.

#define FF_GL_UNSIGNED_BYTE_3_3_2   0x8032

Definition at line 83 of file opengl_enc.c.

Referenced by opengl_type_size().

#define FF_GL_UNSIGNED_BYTE_2_3_3_REV   0x8362

Definition at line 84 of file opengl_enc.c.

Referenced by opengl_type_size().

#define FF_GL_UNSIGNED_SHORT_1_5_5_5_REV   0x8366

Definition at line 85 of file opengl_enc.c.

Referenced by opengl_type_size().

#define FF_GL_UNPACK_ROW_LENGTH   0x0CF2

Definition at line 86 of file opengl_enc.c.

#define FF_GL_ARRAY_BUFFER   0x8892

Definition at line 89 of file opengl_enc.c.

Referenced by opengl_deinit_context(), opengl_draw(), and opengl_prepare_vertex().

#define FF_GL_ELEMENT_ARRAY_BUFFER   0x8893

Definition at line 90 of file opengl_enc.c.

Referenced by opengl_deinit_context(), opengl_draw(), and opengl_init_context().

#define FF_GL_STATIC_DRAW   0x88E4

Definition at line 91 of file opengl_enc.c.

Referenced by opengl_init_context(), and opengl_prepare_vertex().

#define FF_GL_FRAGMENT_SHADER   0x8B30

Definition at line 92 of file opengl_enc.c.

Referenced by opengl_compile_shaders().

#define FF_GL_VERTEX_SHADER   0x8B31

Definition at line 93 of file opengl_enc.c.

Referenced by opengl_compile_shaders().

#define FF_GL_COMPILE_STATUS   0x8B81

Definition at line 94 of file opengl_enc.c.

Referenced by opengl_load_shader().

#define FF_GL_LINK_STATUS   0x8B82

Definition at line 95 of file opengl_enc.c.

Referenced by opengl_compile_shaders().

#define FF_GL_INFO_LOG_LENGTH   0x8B84

Definition at line 96 of file opengl_enc.c.

Referenced by opengl_compile_shaders(), and opengl_load_shader().

#define OPENGL_ERROR_CHECK

(

ctx

)

Value:

{\
    GLenum err_code; \
    if ((err_code = glGetError()) != GL_NO_ERROR) { \
        av_log(ctx, AV_LOG_ERROR, "OpenGL error occurred in '%s', line %d: %d\n", __FUNCTION__, __LINE__, err_code); \
        goto fail; \
    } \
}\

Definition at line 151 of file opengl_enc.c.

Referenced by opengl_compile_shaders(), opengl_configure_texture(), opengl_draw(), opengl_init_context(), opengl_load_shader(), opengl_prepare(), opengl_prepare_vertex(), opengl_read_limits(), and opengl_write_header().

#define LOAD_OPENGL_FUN	(		name,
			type
	)

Value:

procs->name = (type)SelectedGetProcAddress(#name); \
    if (!procs->name) { \
        av_log(opengl, AV_LOG_ERROR, "Cannot load OpenGL function: '%s'\n", #name); \
        return AVERROR(ENOSYS); \
    }

Referenced by opengl_load_procedures().

#define FILL_COMPONENT

(

i

)

Value:

{ \
        shift = desc->comp[i].depth_minus1 >> 3; \
        opengl->color_map[(i << 2) + ((desc->comp[i].offset_plus1 - 1) >> shift)] = 1.0; \
    }

Referenced by opengl_fill_color_map().

#define LOAD_TEXTURE_DATA	(		comp_index,
			sub
	)

Definition at line 1161 of file opengl_enc.c.

Referenced by opengl_draw().

#define OFFSET

(

x

)

offsetof(OpenGLContext, x)

Definition at line 1275 of file opengl_enc.c.

#define ENC   AV_OPT_FLAG_ENCODING_PARAM

Definition at line 1276 of file opengl_enc.c.

Typedef Documentation

typedef const GLuint * buffers

Definition at line 98 of file opengl_enc.c.

typedef GLint size

Definition at line 100 of file opengl_enc.c.

typedef ptrdiff_t const GLvoid* data

Definition at line 100 of file opengl_enc.c.

typedef ptrdiff_t const GLvoid GLenum usage

Definition at line 100 of file opengl_enc.c.

typedef GLuint buffer

Examples:

avio_reading.c.

Definition at line 101 of file opengl_enc.c.

typedef const char * name

Definition at line 102 of file opengl_enc.c.

typedef GLint GLenum type

Examples:

transcoding.c.

Definition at line 104 of file opengl_enc.c.

typedef GLint GLenum GLboolean normalized

Definition at line 104 of file opengl_enc.c.

typedef GLint GLenum GLboolean GLsizei stride

Definition at line 104 of file opengl_enc.c.

typedef GLint GLenum GLboolean GLsizei uintptr_t pointer

Definition at line 104 of file opengl_enc.c.

typedef GLint v0

Definition at line 106 of file opengl_enc.c.

typedef GLsizei count

Definition at line 108 of file opengl_enc.c.

typedef GLsizei GLboolean transpose

Definition at line 108 of file opengl_enc.c.

typedef GLsizei GLboolean const GLfloat* value

Definition at line 108 of file opengl_enc.c.

typedef GLenum pname

Definition at line 113 of file opengl_enc.c.

typedef GLenum GLint * params

Definition at line 113 of file opengl_enc.c.

typedef GLsizei bufSize

Definition at line 114 of file opengl_enc.c.

typedef GLsizei GLsizei * length

Definition at line 114 of file opengl_enc.c.

typedef GLsizei GLsizei char * infoLog

Definition at line 114 of file opengl_enc.c.

typedef GLuint shader

Definition at line 115 of file opengl_enc.c.

typedef GLsizei const char* * string

Definition at line 119 of file opengl_enc.c.

Function Documentation

typedef void

(

APIENTRY *

FF_PFNGLACTIVETEXTUREPROC

)

Referenced by av_vlog(), bayer_to_rgb24_wrapper(), bayer_to_yv12_wrapper(), dct_error(), encode_dvb_subtitles(), hl_decode_mb(), hl_decode_mb_idct_luma(), hl_decode_mb_predict_luma(), hyscale(), main(), palToRgbWrapper(), and spectral_to_sample().

typedef GLint

(

APIENTRY *

FF_PFNGLGETATTRIBLOCATIONPROC

)

Referenced by opengl_compile_shaders(), and opengl_load_shader().

typedef GLuint

(

APIENTRY *

FF_PFNGLCREATEPROGRAMPROC

)

Referenced by opengl_load_shader().

static av_cold int opengl_prepare_vertex ( AVFormatContext *  s )

static

Definition at line 869 of file opengl_enc.c.

Referenced by opengl_resize(), and opengl_write_header().

static int opengl_draw ( AVFormatContext *  h, void *  intput, int  repaint, int  is_pkt  )

static

Definition at line 1199 of file opengl_enc.c.

Referenced by opengl_resize(), opengl_write_frame(), and opengl_write_packet().

static av_cold int opengl_init_context ( OpenGLContext *  opengl )

static

Definition at line 1001 of file opengl_enc.c.

Referenced by opengl_write_header().

static av_cold void opengl_deinit_context ( OpenGLContext *  opengl )

static

Definition at line 281 of file opengl_enc.c.

Referenced by opengl_write_trailer().

static int opengl_resize ( AVFormatContext *  h, int  width, int  height  )

static

Definition at line 307 of file opengl_enc.c.

Referenced by opengl_control_message().

static int opengl_control_message ( AVFormatContext *  h, int  type, void *  data, size_t  data_size  )

static

Definition at line 327 of file opengl_enc.c.

static int av_cold opengl_load_procedures ( OpenGLContext *  opengl )

static

Definition at line 502 of file opengl_enc.c.

Referenced by opengl_write_header().

static void opengl_make_identity ( float  matrix[16] )

static

Definition at line 557 of file opengl_enc.c.

Referenced by opengl_prepare_vertex().

static void opengl_make_ortho ( float  matrix[16], float  left, float  right, float  bottom, float  top, float  nearZ, float  farZ  )

static

Definition at line 563 of file opengl_enc.c.

Referenced by opengl_prepare_vertex().

static av_cold int opengl_read_limits ( OpenGLContext *  opengl )

static

Definition at line 583 of file opengl_enc.c.

Referenced by opengl_write_header().

static const char* opengl_get_fragment_shader_code ( enum AVPixelFormat  format )

static

Definition at line 637 of file opengl_enc.c.

Referenced by opengl_compile_shaders().

static int opengl_type_size ( GLenum  type )

static

Definition at line 647 of file opengl_enc.c.

Referenced by opengl_get_plane_pointer().

static av_cold void opengl_get_texture_params ( OpenGLContext *  opengl )

static

Definition at line 663 of file opengl_enc.c.

Referenced by opengl_write_header().

static void opengl_compute_display_area ( AVFormatContext *  s )

static

Definition at line 675 of file opengl_enc.c.

Referenced by opengl_prepare_vertex().

static av_cold void opengl_get_texture_size ( OpenGLContext *  opengl, int  in_width, int  in_height, int *  out_width, int *  out_height  )

static

Definition at line 699 of file opengl_enc.c.

Referenced by opengl_configure_texture(), and opengl_prepare_vertex().

static av_cold void opengl_fill_color_map ( OpenGLContext *  opengl )

static

Definition at line 717 of file opengl_enc.c.

Referenced by opengl_write_header().

static av_cold GLuint opengl_load_shader ( OpenGLContext *  opengl, GLenum  type, const char *  source  )

static

Definition at line 749 of file opengl_enc.c.

Referenced by opengl_compile_shaders().

static av_cold int opengl_compile_shaders ( OpenGLContext *  opengl, enum AVPixelFormat  pix_fmt  )

static

Definition at line 780 of file opengl_enc.c.

Referenced by opengl_init_context().

static av_cold int opengl_configure_texture ( OpenGLContext *  opengl, GLuint  texture, GLsizei  width, GLsizei  height  )

static

Definition at line 849 of file opengl_enc.c.

Referenced by opengl_init_context().

static int opengl_prepare ( OpenGLContext *  opengl )

static

Definition at line 914 of file opengl_enc.c.

Referenced by opengl_draw().

static int opengl_create_window ( AVFormatContext *  h )

static

Definition at line 939 of file opengl_enc.c.

Referenced by opengl_write_header().

static int opengl_release_window ( AVFormatContext *  h )

static

Definition at line 972 of file opengl_enc.c.

Referenced by opengl_write_trailer().

static av_cold int opengl_write_trailer ( AVFormatContext *  h )

static

Definition at line 987 of file opengl_enc.c.

Referenced by opengl_write_header().

static av_cold int opengl_write_header ( AVFormatContext *  h )

static

Definition at line 1060 of file opengl_enc.c.

static uint8_t* opengl_get_plane_pointer ( OpenGLContext *  opengl, AVPacket *  pkt, int  comp_index, const AVPixFmtDescriptor *  desc  )

static

Definition at line 1132 of file opengl_enc.c.

static int opengl_write_packet ( AVFormatContext *  h, AVPacket *  pkt  )

static

Definition at line 1262 of file opengl_enc.c.

static int opengl_write_frame ( AVFormatContext *  h, int  stream_index, AVFrame **  frame, unsigned  flags  )

static

Definition at line 1267 of file opengl_enc.c.

Variable Documentation

GLushort g_index[6]

static

Initial value:

=
{
    0, 1, 2,
    0, 3, 2,
}

Definition at line 167 of file opengl_enc.c.

Referenced by opengl_draw(), and opengl_init_context().

struct OpenGLFormatDesc opengl_format_desc[]

static

Referenced by opengl_get_fragment_shader_code(), and opengl_get_texture_params().

const AVOption options[]

static

Initial value:

= {
    { "background",   "set background color",   OFFSET(background),   AV_OPT_TYPE_COLOR,  {.str = "black"}, CHAR_MIN, CHAR_MAX, ENC },
    { "no_window",    "disable default window", OFFSET(no_window),    AV_OPT_TYPE_INT,    {.i64 = 0}, INT_MIN, INT_MAX, ENC },
    { "window_title", "set window title",       OFFSET(window_title), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, ENC },
    { "window_size",  "set window size",        OFFSET(window_width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, ENC },
    { NULL }
}

Definition at line 1277 of file opengl_enc.c.

const AVClass opengl_class

static

Initial value:

= {
    .class_name = "opengl outdev",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
    .category   = AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
}

Definition at line 1285 of file opengl_enc.c.

AVOutputFormat ff_opengl_muxer

Initial value:

= {
    .name           = "opengl",
    .long_name      = NULL_IF_CONFIG_SMALL("OpenGL output"),
    .priv_data_size = sizeof(OpenGLContext),
    .audio_codec    = AV_CODEC_ID_NONE,
    .video_codec    = AV_CODEC_ID_RAWVIDEO,
    .write_header   = opengl_write_header,
    .write_packet   = opengl_write_packet,
    .write_uncoded_frame = opengl_write_frame,
    .write_trailer  = opengl_write_trailer,
    .control_message = opengl_control_message,
    .flags          = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS,
    .priv_class     = &opengl_class,
}

Definition at line 1293 of file opengl_enc.c.