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gstreamer/gst-libs/gst/video/video.h
Tim-Philipp Müller 47614d3106 video: sprinkle some G_GNUC_CONST 
Mark functions that have no effect besides their return value and
only inspect their input arguments with G_GNUC_CONST. (We just
ignore the g_return_val_if_fail() guards for this)
2011-05-28 12:29:46 +01:00

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Library <2002> Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_VIDEO_H__
#define __GST_VIDEO_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#include <gst/video/video-enumtypes.h>
/**
* GstVideoFormat:
* @GST_VIDEO_FORMAT_UNKNOWN: Unknown or unset video format id
* @GST_VIDEO_FORMAT_I420: planar 4:2:0 YUV
* @GST_VIDEO_FORMAT_YV12: planar 4:2:0 YVU (like I420 but UV planes swapped)
* @GST_VIDEO_FORMAT_YUY2: packed 4:2:2 YUV (Y0-U0-Y1-V0 Y2-U2-Y3-V2 Y4 ...)
* @GST_VIDEO_FORMAT_UYVY: packed 4:2:2 YUV (U0-Y0-V0-Y1 U2-Y2-V2-Y3 U4 ...)
* @GST_VIDEO_FORMAT_AYUV: packed 4:4:4 YUV with alpha channel (A0-Y0-U0-V0 ...)
* @GST_VIDEO_FORMAT_RGBx: sparse rgb packed into 32 bit, space last
* @GST_VIDEO_FORMAT_BGRx: sparse reverse rgb packed into 32 bit, space last
* @GST_VIDEO_FORMAT_xRGB: sparse rgb packed into 32 bit, space first
* @GST_VIDEO_FORMAT_xBGR: sparse reverse rgb packed into 32 bit, space first
* @GST_VIDEO_FORMAT_RGBA: rgb with alpha channel last
* @GST_VIDEO_FORMAT_BGRA: reverse rgb with alpha channel last
* @GST_VIDEO_FORMAT_ARGB: rgb with alpha channel first
* @GST_VIDEO_FORMAT_ABGR: reverse rgb with alpha channel first
* @GST_VIDEO_FORMAT_RGB: rgb
* @GST_VIDEO_FORMAT_BGR: reverse rgb
* @GST_VIDEO_FORMAT_Y41B: planar 4:1:1 YUV (Since: 0.10.18)
* @GST_VIDEO_FORMAT_Y42B: planar 4:2:2 YUV (Since: 0.10.18)
* @GST_VIDEO_FORMAT_YVYU: packed 4:2:2 YUV (Y0-V0-Y1-U0 Y2-V2-Y3-U2 Y4 ...) (Since: 0.10.23)
* @GST_VIDEO_FORMAT_Y444: planar 4:4:4 YUV (Since: 0.10.24)
* @GST_VIDEO_FORMAT_v210: packed 4:2:2 10-bit YUV, complex format (Since: 0.10.24)
* @GST_VIDEO_FORMAT_v216: packed 4:2:2 16-bit YUV, Y0-U0-Y1-V1 order (Since: 0.10.24)
* @GST_VIDEO_FORMAT_NV12: planar 4:2:0 YUV with interleaved UV plane (Since: 0.10.26)
* @GST_VIDEO_FORMAT_NV21: planar 4:2:0 YUV with interleaved VU plane (Since: 0.10.26)
* @GST_VIDEO_FORMAT_GRAY8: 8-bit grayscale (Since: 0.10.29)
* @GST_VIDEO_FORMAT_GRAY16_BE: 16-bit grayscale, most significant byte first (Since: 0.10.29)
* @GST_VIDEO_FORMAT_GRAY16_LE: 16-bit grayscale, least significant byte first (Since: 0.10.29)
* @GST_VIDEO_FORMAT_v308: packed 4:4:4 YUV (Since: 0.10.29)
* @GST_VIDEO_FORMAT_Y800: same as GST_VIDEO_FORMAT_GRAY8 (Since: 0.10.30)
* @GST_VIDEO_FORMAT_Y16: same as GST_VIDEO_FORMAT_GRAY16_LE (Since: 0.10.30)
* @GST_VIDEO_FORMAT_RGB16: rgb 5-6-5 bits per component (Since: 0.10.30)
* @GST_VIDEO_FORMAT_BGR16: reverse rgb 5-6-5 bits per component (Since: 0.10.30)
* @GST_VIDEO_FORMAT_RGB15: rgb 5-5-5 bits per component (Since: 0.10.30)
* @GST_VIDEO_FORMAT_BGR15: reverse rgb 5-5-5 bits per component (Since: 0.10.30)
* @GST_VIDEO_FORMAT_UYVP: packed 10-bit 4:2:2 YUV (U0-Y0-V0-Y1 U2-Y2-V2-Y3 U4 ...) (Since: 0.10.31)
* @GST_VIDEO_FORMAT_A420: planar 4:4:2:0 AYUV (Since: 0.10.31)
* @GST_VIDEO_FORMAT_RGB8_PALETTED: 8-bit paletted RGB (Since: 0.10.32)
* @GST_VIDEO_FORMAT_YUV9: planar 4:1:0 YUV (Since: 0.10.32)
* @GST_VIDEO_FORMAT_YVU9: planar 4:1:0 YUV (like YUV9 but UV planes swapped) (Since: 0.10.32)
* @GST_VIDEO_FORMAT_IYU1: packed 4:1:1 YUV (Cb-Y0-Y1-Cr-Y2-Y3 ...) (Since: 0.10.32)
* @GST_VIDEO_FORMAT_ARGB64: rgb with alpha channel first, 16 bits per channel (Since: 0.10.33)
* @GST_VIDEO_FORMAT_AYUV64: packed 4:4:4 YUV with alpha channel, 16 bits per channel (A0-Y0-U0-V0 ...) (Since: 0.10.33)
* @GST_VIDEO_FORMAT_r210: packed 4:4:4 RGB, 10 bits per channel (Since: 0.10.33)
*
* Enum value describing the most common video formats.
*/
typedef enum {
GST_VIDEO_FORMAT_UNKNOWN,
GST_VIDEO_FORMAT_I420,
GST_VIDEO_FORMAT_YV12,
GST_VIDEO_FORMAT_YUY2,
GST_VIDEO_FORMAT_UYVY,
GST_VIDEO_FORMAT_AYUV,
GST_VIDEO_FORMAT_RGBx,
GST_VIDEO_FORMAT_BGRx,
GST_VIDEO_FORMAT_xRGB,
GST_VIDEO_FORMAT_xBGR,
GST_VIDEO_FORMAT_RGBA,
GST_VIDEO_FORMAT_BGRA,
GST_VIDEO_FORMAT_ARGB,
GST_VIDEO_FORMAT_ABGR,
GST_VIDEO_FORMAT_RGB,
GST_VIDEO_FORMAT_BGR,
GST_VIDEO_FORMAT_Y41B,
GST_VIDEO_FORMAT_Y42B,
GST_VIDEO_FORMAT_YVYU,
GST_VIDEO_FORMAT_Y444,
GST_VIDEO_FORMAT_v210,
GST_VIDEO_FORMAT_v216,
GST_VIDEO_FORMAT_NV12,
GST_VIDEO_FORMAT_NV21,
GST_VIDEO_FORMAT_GRAY8,
GST_VIDEO_FORMAT_GRAY16_BE,
GST_VIDEO_FORMAT_GRAY16_LE,
GST_VIDEO_FORMAT_v308,
GST_VIDEO_FORMAT_Y800,
GST_VIDEO_FORMAT_Y16,
GST_VIDEO_FORMAT_RGB16,
GST_VIDEO_FORMAT_BGR16,
GST_VIDEO_FORMAT_RGB15,
GST_VIDEO_FORMAT_BGR15,
GST_VIDEO_FORMAT_UYVP,
GST_VIDEO_FORMAT_A420,
GST_VIDEO_FORMAT_RGB8_PALETTED,
GST_VIDEO_FORMAT_YUV9,
GST_VIDEO_FORMAT_YVU9,
GST_VIDEO_FORMAT_IYU1,
GST_VIDEO_FORMAT_ARGB64,
GST_VIDEO_FORMAT_AYUV64,
GST_VIDEO_FORMAT_r210
} GstVideoFormat;
#define GST_VIDEO_BYTE1_MASK_32 "0xFF000000"
#define GST_VIDEO_BYTE2_MASK_32 "0x00FF0000"
#define GST_VIDEO_BYTE3_MASK_32 "0x0000FF00"
#define GST_VIDEO_BYTE4_MASK_32 "0x000000FF"
#define GST_VIDEO_BYTE1_MASK_24 "0x00FF0000"
#define GST_VIDEO_BYTE2_MASK_24 "0x0000FF00"
#define GST_VIDEO_BYTE3_MASK_24 "0x000000FF"
#define GST_VIDEO_BYTE1_MASK_32_INT 0xFF000000
#define GST_VIDEO_BYTE2_MASK_32_INT 0x00FF0000
#define GST_VIDEO_BYTE3_MASK_32_INT 0x0000FF00
#define GST_VIDEO_BYTE4_MASK_32_INT 0x000000FF
#define GST_VIDEO_BYTE1_MASK_24_INT 0x00FF0000
#define GST_VIDEO_BYTE2_MASK_24_INT 0x0000FF00
#define GST_VIDEO_BYTE3_MASK_24_INT 0x000000FF
#define GST_VIDEO_COMP1_MASK_16 "0xf800"
#define GST_VIDEO_COMP2_MASK_16 "0x07e0"
#define GST_VIDEO_COMP3_MASK_16 "0x001f"
#define GST_VIDEO_COMP1_MASK_15 "0x7c00"
#define GST_VIDEO_COMP2_MASK_15 "0x03e0"
#define GST_VIDEO_COMP3_MASK_15 "0x001f"
#define GST_VIDEO_COMP1_MASK_16_INT 0xf800
#define GST_VIDEO_COMP2_MASK_16_INT 0x07e0
#define GST_VIDEO_COMP3_MASK_16_INT 0x001f
#define GST_VIDEO_COMP1_MASK_15_INT 0x7c00
#define GST_VIDEO_COMP2_MASK_15_INT 0x03e0
#define GST_VIDEO_COMP3_MASK_15_INT 0x001f
#ifndef GST_DISABLE_DEPRECATED
#define GST_VIDEO_RED_MASK_16 GST_VIDEO_COMP1_MASK_16
#define GST_VIDEO_GREEN_MASK_16 GST_VIDEO_COMP2_MASK_16
#define GST_VIDEO_BLUE_MASK_16 GST_VIDEO_COMP3_MASK_16
#define GST_VIDEO_RED_MASK_15 GST_VIDEO_COMP1_MASK_15
#define GST_VIDEO_GREEN_MASK_15 GST_VIDEO_COMP2_MASK_15
#define GST_VIDEO_BLUE_MASK_15 GST_VIDEO_COMP3_MASK_15
#define GST_VIDEO_RED_MASK_16_INT GST_VIDEO_COMP1_MASK_16_INT
#define GST_VIDEO_GREEN_MASK_16_INT GST_VIDEO_COMP2_MASK_16_INT
#define GST_VIDEO_BLUE_MASK_16_INT GST_VIDEO_COMP3_MASK_16_INT
#define GST_VIDEO_RED_MASK_15_INT GST_VIDEO_COMP1_MASK_15_INT
#define GST_VIDEO_GREEN_MASK_15_INT GST_VIDEO_COMP2_MASK_15_INT
#define GST_VIDEO_BLUE_MASK_15_INT GST_VIDEO_COMP3_MASK_15_INT
#endif
#define GST_VIDEO_SIZE_RANGE "(int) [ 1, max ]"
#define GST_VIDEO_FPS_RANGE "(fraction) [ 0, max ]"
/* consider the next 2 protected */
#define __GST_VIDEO_CAPS_MAKE_32A(R, G, B, A) \
"video/x-raw-rgb, " \
"bpp = (int) 32, " \
"depth = (int) 32, " \
"endianness = (int) BIG_ENDIAN, " \
"red_mask = (int) " GST_VIDEO_BYTE ## R ## _MASK_32 ", " \
"green_mask = (int) " GST_VIDEO_BYTE ## G ## _MASK_32 ", " \
"blue_mask = (int) " GST_VIDEO_BYTE ## B ## _MASK_32 ", " \
"alpha_mask = (int) " GST_VIDEO_BYTE ## A ## _MASK_32 ", " \
"width = " GST_VIDEO_SIZE_RANGE ", " \
"height = " GST_VIDEO_SIZE_RANGE ", " \
"framerate = " GST_VIDEO_FPS_RANGE
#define __GST_VIDEO_CAPS_MAKE_32(R, G, B) \
"video/x-raw-rgb, " \
"bpp = (int) 32, " \
"depth = (int) 24, " \
"endianness = (int) BIG_ENDIAN, " \
"red_mask = (int) " GST_VIDEO_BYTE ## R ## _MASK_32 ", " \
"green_mask = (int) " GST_VIDEO_BYTE ## G ## _MASK_32 ", " \
"blue_mask = (int) " GST_VIDEO_BYTE ## B ## _MASK_32 ", " \
"width = " GST_VIDEO_SIZE_RANGE ", " \
"height = " GST_VIDEO_SIZE_RANGE ", " \
"framerate = " GST_VIDEO_FPS_RANGE
#define __GST_VIDEO_CAPS_MAKE_24(R, G, B) \
"video/x-raw-rgb, " \
"bpp = (int) 24, " \
"depth = (int) 24, " \
"endianness = (int) BIG_ENDIAN, " \
"red_mask = (int) " GST_VIDEO_BYTE ## R ## _MASK_24 ", " \
"green_mask = (int) " GST_VIDEO_BYTE ## G ## _MASK_24 ", " \
"blue_mask = (int) " GST_VIDEO_BYTE ## B ## _MASK_24 ", " \
"width = " GST_VIDEO_SIZE_RANGE ", " \
"height = " GST_VIDEO_SIZE_RANGE ", " \
"framerate = " GST_VIDEO_FPS_RANGE
#define __GST_VIDEO_CAPS_MAKE_16(R, G, B) \
"video/x-raw-rgb, " \
"bpp = (int) 16, " \
"depth = (int) 16, " \
"endianness = (int) BYTE_ORDER, " \
"red_mask = (int) " GST_VIDEO_COMP ## R ## _MASK_16 ", " \
"green_mask = (int) " GST_VIDEO_COMP ## G ## _MASK_16 ", " \
"blue_mask = (int) " GST_VIDEO_COMP ## B ## _MASK_16 ", " \
"width = " GST_VIDEO_SIZE_RANGE ", " \
"height = " GST_VIDEO_SIZE_RANGE ", " \
"framerate = " GST_VIDEO_FPS_RANGE
#define __GST_VIDEO_CAPS_MAKE_15(R, G, B) \
"video/x-raw-rgb, " \
"bpp = (int) 16, " \
"depth = (int) 15, " \
"endianness = (int) BYTE_ORDER, " \
"red_mask = (int) " GST_VIDEO_COMP ## R ## _MASK_15 ", " \
"green_mask = (int) " GST_VIDEO_COMP ## G ## _MASK_15 ", " \
"blue_mask = (int) " GST_VIDEO_COMP ## B ## _MASK_15 ", " \
"width = " GST_VIDEO_SIZE_RANGE ", " \
"height = " GST_VIDEO_SIZE_RANGE ", " \
"framerate = " GST_VIDEO_FPS_RANGE
#define __GST_VIDEO_CAPS_MAKE_64A(R, G, B, A) \
"video/x-raw-rgb, " \
"bpp = (int) 64, " \
"depth = (int) 64, " \
"endianness = (int) BIG_ENDIAN, " \
"red_mask = (int) " GST_VIDEO_BYTE ## R ## _MASK_32 ", " \
"green_mask = (int) " GST_VIDEO_BYTE ## G ## _MASK_32 ", " \
"blue_mask = (int) " GST_VIDEO_BYTE ## B ## _MASK_32 ", " \
"alpha_mask = (int) " GST_VIDEO_BYTE ## A ## _MASK_32 ", " \
"width = " GST_VIDEO_SIZE_RANGE ", " \
"height = " GST_VIDEO_SIZE_RANGE ", " \
"framerate = " GST_VIDEO_FPS_RANGE
/* 24 bit */
#define GST_VIDEO_CAPS_RGB \
__GST_VIDEO_CAPS_MAKE_24 (1, 2, 3)
#define GST_VIDEO_CAPS_BGR \
__GST_VIDEO_CAPS_MAKE_24 (3, 2, 1)
/* 32 bit */
#define GST_VIDEO_CAPS_RGBx \
__GST_VIDEO_CAPS_MAKE_32 (1, 2, 3)
#define GST_VIDEO_CAPS_xRGB \
__GST_VIDEO_CAPS_MAKE_32 (2, 3, 4)
#define GST_VIDEO_CAPS_BGRx \
__GST_VIDEO_CAPS_MAKE_32 (3, 2, 1)
#define GST_VIDEO_CAPS_xBGR \
__GST_VIDEO_CAPS_MAKE_32 (4, 3, 2)
/* 32 bit alpha */
#define GST_VIDEO_CAPS_RGBA \
__GST_VIDEO_CAPS_MAKE_32A (1, 2, 3, 4)
#define GST_VIDEO_CAPS_ARGB \
__GST_VIDEO_CAPS_MAKE_32A (2, 3, 4, 1)
#define GST_VIDEO_CAPS_BGRA \
__GST_VIDEO_CAPS_MAKE_32A (3, 2, 1, 4)
#define GST_VIDEO_CAPS_ABGR \
__GST_VIDEO_CAPS_MAKE_32A (4, 3, 2, 1)
/* note: the macro name uses the order on BE systems */
#if G_BYTE_ORDER == G_BIG_ENDIAN
#define GST_VIDEO_CAPS_xRGB_HOST_ENDIAN \
GST_VIDEO_CAPS_xRGB
#define GST_VIDEO_CAPS_BGRx_HOST_ENDIAN \
GST_VIDEO_CAPS_BGRx
#else
#define GST_VIDEO_CAPS_xRGB_HOST_ENDIAN \
GST_VIDEO_CAPS_BGRx
#define GST_VIDEO_CAPS_BGRx_HOST_ENDIAN \
GST_VIDEO_CAPS_xRGB
#endif
/* 15/16 bit */
#define GST_VIDEO_CAPS_RGB_16 \
__GST_VIDEO_CAPS_MAKE_16 (1, 2, 3)
#define GST_VIDEO_CAPS_BGR_16 \
__GST_VIDEO_CAPS_MAKE_16 (3, 2, 1)
#define GST_VIDEO_CAPS_RGB_15 \
__GST_VIDEO_CAPS_MAKE_15 (1, 2, 3)
#define GST_VIDEO_CAPS_BGR_15 \
__GST_VIDEO_CAPS_MAKE_15 (3, 2, 1)
/* 30 bit */
#define GST_VIDEO_CAPS_r210 \
"video/x-raw-rgb, " \
"bpp = (int) 32, " \
"depth = (int) 30, " \
"endianness = (int) BIG_ENDIAN, " \
"red_mask = (int) 0x3ff00000, " \
"green_mask = (int) 0x000ffc00, " \
"blue_mask = (int) 0x000003ff, " \
"width = " GST_VIDEO_SIZE_RANGE ", " \
"height = " GST_VIDEO_SIZE_RANGE ", " \
"framerate = " GST_VIDEO_FPS_RANGE
/* 64 bit alpha */
#define GST_VIDEO_CAPS_ARGB_64 \
__GST_VIDEO_CAPS_MAKE_64A (2, 3, 4, 1)
/**
* GST_VIDEO_CAPS_RGB8_PALETTED:
*
* Generic caps string for 8-bit paletted RGB video, for use in pad templates.
*
* Since: 0.10.32
*/
#define GST_VIDEO_CAPS_RGB8_PALETTED \
"video/x-raw-rgb, bpp = (int)8, depth = (int)8, " \
"width = "GST_VIDEO_SIZE_RANGE" , " \
"height = " GST_VIDEO_SIZE_RANGE ", " \
"framerate = "GST_VIDEO_FPS_RANGE
/**
* GST_VIDEO_CAPS_YUV:
* @fourcc: YUV fourcc format that describes the pixel layout, as string
* (e.g. "I420", "YV12", "YUY2", "AYUV", etc.)
*
* Generic caps string for YUV video, for use in pad templates.
*/
#define GST_VIDEO_CAPS_YUV(fourcc) \
"video/x-raw-yuv, " \
"format = (fourcc) " fourcc ", " \
"width = " GST_VIDEO_SIZE_RANGE ", " \
"height = " GST_VIDEO_SIZE_RANGE ", " \
"framerate = " GST_VIDEO_FPS_RANGE
/**
* GST_VIDEO_CAPS_GRAY8:
*
* Generic caps string for 8-bit grayscale video, for use in pad templates.
*
* Since: 0.10.29
*/
#define GST_VIDEO_CAPS_GRAY8 \
"video/x-raw-gray, " \
"bpp = (int) 8, " \
"depth = (int) 8, " \
"width = " GST_VIDEO_SIZE_RANGE ", " \
"height = " GST_VIDEO_SIZE_RANGE ", " \
"framerate = " GST_VIDEO_FPS_RANGE
/**
* GST_VIDEO_CAPS_GRAY16:
* @endianness: endianness as string, ie. either "1234", "4321", "BIG_ENDIAN"
* or "LITTLE_ENDIAN"
*
* Generic caps string for 16-bit grayscale video, for use in pad templates.
*
* Since: 0.10.29
*/
#define GST_VIDEO_CAPS_GRAY16(endianness) \
"video/x-raw-gray, " \
"bpp = (int) 16, " \
"depth = (int) 16, " \
"endianness = (int) " endianness ", " \
"width = " GST_VIDEO_SIZE_RANGE ", " \
"height = " GST_VIDEO_SIZE_RANGE ", " \
"framerate = " GST_VIDEO_FPS_RANGE
/* buffer flags */
/**
* GST_VIDEO_BUFFER_TFF:
*
* If the #GstBuffer is interlaced, then the first field in the video frame is
* the top field. If unset, the bottom field is first.
*
* Since: 0.10.23
*/
#define GST_VIDEO_BUFFER_TFF GST_BUFFER_FLAG_MEDIA1
/**
* GST_VIDEO_BUFFER_RFF:
*
* If the #GstBuffer is interlaced, then the first field (as defined by the
* %GST_VIDEO_BUFFER_TFF flag setting) is repeated.
*
* Since: 0.10.23
*/
#define GST_VIDEO_BUFFER_RFF GST_BUFFER_FLAG_MEDIA2
/**
* GST_VIDEO_BUFFER_ONEFIELD:
*
* If the #GstBuffer is interlaced, then only the first field (as defined by the
* %GST_VIDEO_BUFFER_TFF flag setting) is to be displayed.
*
* Since: 0.10.23
*/
#define GST_VIDEO_BUFFER_ONEFIELD GST_BUFFER_FLAG_MEDIA3
/**
* GST_VIDEO_BUFFER_PROGRESSIVE:
*
* If the #GstBuffer is telecined, then the buffer is progressive if the
* %GST_VIDEO_BUFFER_PROGRESSIVE flag is set, else it is telecine mixed.
*
* Since: 0.10.33
*/
#define GST_VIDEO_BUFFER_PROGRESSIVE GST_BUFFER_FLAG_MEDIA4
/* functions */
const GValue * gst_video_frame_rate (GstPad * pad);
gboolean gst_video_get_size (GstPad * pad,
gint * width,
gint * height);
gboolean gst_video_calculate_display_ratio (guint * dar_n,
guint * dar_d,
guint video_width,
guint video_height,
guint video_par_n,
guint video_par_d,
guint display_par_n,
guint display_par_d);
gboolean gst_video_format_parse_caps (const GstCaps * caps,
GstVideoFormat * format,
int * width,
int * height);
gboolean gst_video_format_parse_caps_interlaced (GstCaps * caps,
gboolean * interlaced);
gboolean gst_video_parse_caps_pixel_aspect_ratio (GstCaps * caps,
int * par_n,
int * par_d);
gboolean gst_video_parse_caps_framerate (GstCaps * caps,
int * fps_n,
int * fps_d);
const char * gst_video_parse_caps_color_matrix (GstCaps * caps);
const char * gst_video_parse_caps_chroma_site (GstCaps * caps);
GstBuffer * gst_video_parse_caps_palette (GstCaps * caps);
/* create caps given format and details */
GstCaps * gst_video_format_new_caps (GstVideoFormat format,
int width, int height,
int framerate_n,
int framerate_d,
int par_n, int par_d);
GstCaps * gst_video_format_new_caps_interlaced (GstVideoFormat format,
int width, int height,
int framerate_n,
int framerate_d,
int par_n, int par_d,
gboolean interlaced);
GstCaps * gst_video_format_new_template_caps (GstVideoFormat format);
/* format properties */
GstVideoFormat gst_video_format_from_fourcc (guint32 fourcc) G_GNUC_CONST;
guint32 gst_video_format_to_fourcc (GstVideoFormat format) G_GNUC_CONST;
gboolean gst_video_format_is_rgb (GstVideoFormat format) G_GNUC_CONST;
gboolean gst_video_format_is_yuv (GstVideoFormat format) G_GNUC_CONST;
gboolean gst_video_format_is_gray (GstVideoFormat format) G_GNUC_CONST;
gboolean gst_video_format_has_alpha (GstVideoFormat format) G_GNUC_CONST;
int gst_video_format_get_component_depth (GstVideoFormat format,
int component) G_GNUC_CONST;
int gst_video_format_get_row_stride (GstVideoFormat format,
int component,
int width) G_GNUC_CONST;
int gst_video_format_get_pixel_stride (GstVideoFormat format,
int component) G_GNUC_CONST;
int gst_video_format_get_component_width (GstVideoFormat format,
int component,
int width) G_GNUC_CONST;
int gst_video_format_get_component_height (GstVideoFormat format,
int component,
int height) G_GNUC_CONST;
int gst_video_format_get_component_offset (GstVideoFormat format,
int component,
int width,
int height) G_GNUC_CONST;
int gst_video_format_get_size (GstVideoFormat format,
int width,
int height) G_GNUC_CONST;
gboolean gst_video_get_size_from_caps (const GstCaps * caps, gint * size);
gboolean gst_video_format_convert (GstVideoFormat format,
int width,
int height,
int fps_n,
int fps_d,
GstFormat src_format,
gint64 src_value,
GstFormat dest_format,
gint64 * dest_value);
/* video still frame event creation and parsing */
GstEvent * gst_video_event_new_still_frame (gboolean in_still);
gboolean gst_video_event_parse_still_frame (GstEvent * event, gboolean * in_still);
/* convert/encode video frame from one format to another */
typedef void (*GstVideoConvertFrameCallback) (GstBuffer * buf, GError *error, gpointer user_data);
void gst_video_convert_frame_async (GstBuffer * buf,
const GstCaps * to_caps,
GstClockTime timeout,
GstVideoConvertFrameCallback callback,
gpointer user_data,
GDestroyNotify destroy_notify);
GstBuffer * gst_video_convert_frame (GstBuffer * buf,
const GstCaps * to_caps,
GstClockTime timeout,
GError ** error);
G_END_DECLS
#endif /* __GST_VIDEO_H__ */
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