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gstreamer/gst-libs/gst/video/video.c
Wim Taymans 21bf4f04f3 video: fix some video formats 
Rename the offset field in GstVideoFormatInfo to poffset to avoid confusion with
the offset of the plane in the buffer. The poffset is the offset in the plane
where the first byte of the component data can be found.
Properly implement the COMP_OFFSET calculations.
Fix YV12 and YVU9, simply use the same offsets as the regular I420 and YUV9
variants, we use the plane info to reorder components already.
Improve the unit test.
2012-01-02 13:30:53 +01:00

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Library <2002> Ronald Bultje <rbultje@ronald.bitfreak.net>
* Copyright (C) 2007 David A. Schleef <ds@schleef.org>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include "video.h"
#include "gstvideometa.h"
static int fill_planes (GstVideoInfo * info);
typedef struct
{
guint32 fourcc;
GstVideoFormatInfo info;
} VideoFormat;
/* depths: bits, n_components, shift, depth */
#define DPTH0 0, 0, { 0, 0, 0, 0 }, { 0, 0, 0, 0 }
#define DPTH8 8, 1, { 0, 0, 0, 0 }, { 8, 0, 0, 0 }
#define DPTH888 8, 3, { 0, 0, 0, 0 }, { 8, 8, 8, 0 }
#define DPTH8888 8, 4, { 0, 0, 0, 0 }, { 8, 8, 8, 8 }
#define DPTH10_10_10 10, 3, { 0, 0, 0, 0 }, { 10, 10, 10, 0 }
#define DPTH16 16, 1, { 0, 0, 0, 0 }, { 16, 0, 0, 0 }
#define DPTH16_16_16 16, 3, { 0, 0, 0, 0 }, { 16, 16, 16, 0 }
#define DPTH16_16_16_16 16, 4, { 0, 0, 0, 0 }, { 16, 16, 16, 16 }
#define DPTH555 16, 3, { 10, 5, 0, 0 }, { 5, 5, 5, 0 }
#define DPTH565 16, 3, { 11, 5, 0, 0 }, { 5, 6, 5, 0 }
/* pixel strides */
#define PSTR0 { 0, 0, 0, 0 }
#define PSTR1 { 1, 0, 0, 0 }
#define PSTR111 { 1, 1, 1, 0 }
#define PSTR1111 { 1, 1, 1, 1 }
#define PSTR122 { 1, 2, 2, 0 }
#define PSTR2 { 2, 0, 0, 0 }
#define PSTR222 { 2, 2, 2, 0 }
#define PSTR244 { 2, 4, 4, 0 }
#define PSTR444 { 4, 4, 4, 0 }
#define PSTR4444 { 4, 4, 4, 4 }
#define PSTR333 { 3, 3, 3, 0 }
#define PSTR488 { 4, 8, 8, 0 }
#define PSTR8888 { 8, 8, 8, 8 }
/* planes */
#define PLANE_NA 0, { 0, 0, 0, 0 }
#define PLANE0 1, { 0, 0, 0, 0 }
#define PLANE011 2, { 0, 1, 1, 0 }
#define PLANE012 3, { 0, 1, 2, 0 }
#define PLANE0123 4, { 0, 1, 2, 3 }
#define PLANE021 3, { 0, 2, 1, 0 }
/* offsets */
#define OFFS0 { 0, 0, 0, 0 }
#define OFFS013 { 0, 1, 3, 0 }
#define OFFS102 { 1, 0, 2, 0 }
#define OFFS1230 { 1, 2, 3, 0 }
#define OFFS012 { 0, 1, 2, 0 }
#define OFFS210 { 2, 1, 0, 0 }
#define OFFS123 { 1, 2, 3, 0 }
#define OFFS321 { 3, 2, 1, 0 }
#define OFFS0123 { 0, 1, 2, 3 }
#define OFFS2103 { 2, 1, 0, 3 }
#define OFFS3210 { 3, 2, 1, 0 }
#define OFFS031 { 0, 3, 1, 0 }
#define OFFS026 { 0, 2, 6, 0 }
#define OFFS001 { 0, 0, 1, 0 }
#define OFFS010 { 0, 1, 0, 0 }
#define OFFS104 { 1, 0, 4, 0 }
#define OFFS2460 { 2, 4, 6, 0 }
/* subsampling */
#define SUB410 { 0, 2, 2, 0 }, { 0, 2, 2, 0 }
#define SUB411 { 0, 2, 2, 0 }, { 0, 0, 0, 0 }
#define SUB420 { 0, 1, 1, 0 }, { 0, 1, 1, 0 }
#define SUB422 { 0, 1, 1, 0 }, { 0, 0, 0, 0 }
#define SUB4 { 0, 0, 0, 0 }, { 0, 0, 0, 0 }
#define SUB444 { 0, 0, 0, 0 }, { 0, 0, 0, 0 }
#define SUB4444 { 0, 0, 0, 0 }, { 0, 0, 0, 0 }
#define SUB4204 { 0, 1, 1, 0 }, { 0, 1, 1, 0 }
#define MAKE_YUV_FORMAT(name, desc, fourcc, depth, pstride, plane, offs, sub ) \
{ fourcc, {GST_VIDEO_FORMAT_ ##name, G_STRINGIFY(name), desc, GST_VIDEO_FORMAT_FLAG_YUV, depth, pstride, plane, offs, sub } }
#define MAKE_YUVA_FORMAT(name, desc, fourcc, depth, pstride, plane, offs, sub) \
{ fourcc, {GST_VIDEO_FORMAT_ ##name, G_STRINGIFY(name), desc, GST_VIDEO_FORMAT_FLAG_YUV | GST_VIDEO_FORMAT_FLAG_ALPHA, depth, pstride, plane, offs, sub } }
#define MAKE_RGB_FORMAT(name, desc, depth, pstride, plane, offs, sub) \
{ 0x00000000, {GST_VIDEO_FORMAT_ ##name, G_STRINGIFY(name), desc, GST_VIDEO_FORMAT_FLAG_RGB, depth, pstride, plane, offs, sub } }
#define MAKE_RGBA_FORMAT(name, desc, depth, pstride, plane, offs, sub) \
{ 0x00000000, {GST_VIDEO_FORMAT_ ##name, G_STRINGIFY(name), desc, GST_VIDEO_FORMAT_FLAG_RGB | GST_VIDEO_FORMAT_FLAG_ALPHA, depth, pstride, plane, offs, sub } }
#define MAKE_GRAY_FORMAT(name, desc, depth, pstride, plane, offs, sub) \
{ 0x00000000, {GST_VIDEO_FORMAT_ ##name, G_STRINGIFY(name), desc, GST_VIDEO_FORMAT_FLAG_GRAY, depth, pstride, plane, offs, sub } }
static VideoFormat formats[] = {
{0x00000000, {GST_VIDEO_FORMAT_UNKNOWN, "UNKNOWN", "unknown video", 0, DPTH0,
PSTR0, PLANE_NA,
OFFS0}},
MAKE_YUV_FORMAT (I420, "raw video", GST_MAKE_FOURCC ('I', '4', '2', '0'),
DPTH888, PSTR111,
PLANE012, OFFS0, SUB420),
MAKE_YUV_FORMAT (YV12, "raw video", GST_MAKE_FOURCC ('Y', 'V', '1', '2'),
DPTH888, PSTR111,
PLANE021, OFFS0, SUB420),
MAKE_YUV_FORMAT (YUY2, "raw video", GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'),
DPTH888, PSTR244,
PLANE0, OFFS013, SUB422),
MAKE_YUV_FORMAT (UYVY, "raw video", GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'),
DPTH888, PSTR244,
PLANE0, OFFS102, SUB422),
MAKE_YUVA_FORMAT (AYUV, "raw video", GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'),
DPTH8888,
PSTR4444, PLANE0, OFFS1230, SUB4444),
MAKE_RGB_FORMAT (RGBx, "raw video", DPTH888, PSTR444, PLANE0, OFFS012,
SUB444),
MAKE_RGB_FORMAT (BGRx, "raw video", DPTH888, PSTR444, PLANE0, OFFS210,
SUB444),
MAKE_RGB_FORMAT (xRGB, "raw video", DPTH888, PSTR444, PLANE0, OFFS123,
SUB444),
MAKE_RGB_FORMAT (xBGR, "raw video", DPTH888, PSTR444, PLANE0, OFFS321,
SUB444),
MAKE_RGBA_FORMAT (RGBA, "raw video", DPTH8888, PSTR4444, PLANE0, OFFS0123,
SUB4444),
MAKE_RGBA_FORMAT (BGRA, "raw video", DPTH8888, PSTR4444, PLANE0, OFFS2103,
SUB4444),
MAKE_RGBA_FORMAT (ARGB, "raw video", DPTH8888, PSTR4444, PLANE0, OFFS1230,
SUB4444),
MAKE_RGBA_FORMAT (ABGR, "raw video", DPTH8888, PSTR4444, PLANE0, OFFS3210,
SUB4444),
MAKE_RGB_FORMAT (RGB, "raw video", DPTH888, PSTR333, PLANE0, OFFS012, SUB444),
MAKE_RGB_FORMAT (BGR, "raw video", DPTH888, PSTR333, PLANE0, OFFS210, SUB444),
MAKE_YUV_FORMAT (Y41B, "raw video", GST_MAKE_FOURCC ('Y', '4', '1', 'B'),
DPTH888, PSTR111,
PLANE012, OFFS0, SUB411),
MAKE_YUV_FORMAT (Y42B, "raw video", GST_MAKE_FOURCC ('Y', '4', '2', 'B'),
DPTH888, PSTR111,
PLANE012, OFFS0, SUB422),
MAKE_YUV_FORMAT (YVYU, "raw video", GST_MAKE_FOURCC ('Y', 'V', 'Y', 'U'),
DPTH888, PSTR244,
PLANE0, OFFS031, SUB422),
MAKE_YUV_FORMAT (Y444, "raw video", GST_MAKE_FOURCC ('Y', '4', '4', '4'),
DPTH888, PSTR111,
PLANE012, OFFS0, SUB444),
MAKE_YUV_FORMAT (v210, "raw video", GST_MAKE_FOURCC ('v', '2', '1', '0'),
DPTH10_10_10,
PSTR0, PLANE0, OFFS0, SUB422),
MAKE_YUV_FORMAT (v216, "raw video", GST_MAKE_FOURCC ('v', '2', '1', '6'),
DPTH16_16_16,
PSTR488, PLANE0, OFFS026, SUB422),
MAKE_YUV_FORMAT (NV12, "raw video", GST_MAKE_FOURCC ('N', 'V', '1', '2'),
DPTH888, PSTR122,
PLANE011, OFFS001, SUB420),
MAKE_YUV_FORMAT (NV21, "raw video", GST_MAKE_FOURCC ('N', 'V', '2', '1'),
DPTH888, PSTR122,
PLANE011, OFFS010, SUB420),
MAKE_GRAY_FORMAT (GRAY8, "raw video", DPTH8, PSTR1, PLANE0, OFFS0, SUB4),
MAKE_GRAY_FORMAT (GRAY16_BE, "raw video", DPTH16, PSTR2, PLANE0, OFFS0, SUB4),
MAKE_GRAY_FORMAT (GRAY16_LE, "raw video", DPTH16, PSTR2, PLANE0, OFFS0, SUB4),
MAKE_YUV_FORMAT (v308, "raw video", GST_MAKE_FOURCC ('v', '3', '0', '8'),
DPTH888, PSTR333,
PLANE0, OFFS012, SUB444),
MAKE_YUV_FORMAT (Y800, "raw video", GST_MAKE_FOURCC ('Y', '8', '0', '0'),
DPTH8, PSTR1,
PLANE0, OFFS0, SUB4),
MAKE_YUV_FORMAT (Y16, "raw video", GST_MAKE_FOURCC ('Y', '1', '6', ' '),
DPTH16, PSTR2,
PLANE0, OFFS0, SUB4),
MAKE_RGB_FORMAT (RGB16, "raw video", DPTH565, PSTR222, PLANE0, OFFS0, SUB444),
MAKE_RGB_FORMAT (BGR16, "raw video", DPTH565, PSTR222, PLANE0, OFFS0, SUB444),
MAKE_RGB_FORMAT (RGB15, "raw video", DPTH555, PSTR222, PLANE0, OFFS0, SUB444),
MAKE_RGB_FORMAT (BGR15, "raw video", DPTH555, PSTR222, PLANE0, OFFS0, SUB444),
MAKE_YUV_FORMAT (UYVP, "raw video", GST_MAKE_FOURCC ('U', 'Y', 'V', 'P'),
DPTH10_10_10,
PSTR0, PLANE0, OFFS0, SUB422),
MAKE_YUVA_FORMAT (A420, "raw video", GST_MAKE_FOURCC ('A', '4', '2', '0'),
DPTH8888,
PSTR1111, PLANE0123, OFFS0, SUB4204),
MAKE_RGBA_FORMAT (RGB8_PALETTED, "raw video", DPTH8888, PSTR1111, PLANE0,
OFFS0, SUB4444),
MAKE_YUV_FORMAT (YUV9, "raw video", GST_MAKE_FOURCC ('Y', 'U', 'V', '9'),
DPTH888, PSTR111,
PLANE012, OFFS0, SUB410),
MAKE_YUV_FORMAT (YVU9, "raw video", GST_MAKE_FOURCC ('Y', 'V', 'U', '9'),
DPTH888, PSTR111,
PLANE021, OFFS0, SUB410),
MAKE_YUV_FORMAT (IYU1, "raw video", GST_MAKE_FOURCC ('I', 'Y', 'U', '1'),
DPTH888, PSTR0,
PLANE0, OFFS104, SUB411),
MAKE_RGBA_FORMAT (ARGB64, "raw video", DPTH16_16_16_16, PSTR8888, PLANE0,
OFFS2460,
SUB444),
MAKE_YUVA_FORMAT (AYUV64, "raw video", 0x00000000, DPTH16_16_16_16, PSTR8888,
PLANE0,
OFFS2460, SUB444),
MAKE_YUV_FORMAT (r210, "raw video", GST_MAKE_FOURCC ('r', '2', '1', '0'),
DPTH10_10_10,
PSTR444, PLANE0, OFFS0, SUB444),
};
/**
* SECTION:gstvideo
* @short_description: Support library for video operations
*
* <refsect2>
* <para>
* This library contains some helper functions and includes the
* videosink and videofilter base classes.
* </para>
* </refsect2>
*/
/**
* gst_video_calculate_display_ratio:
* @dar_n: Numerator of the calculated display_ratio
* @dar_d: Denominator of the calculated display_ratio
* @video_width: Width of the video frame in pixels
* @video_height: Height of the video frame in pixels
* @video_par_n: Numerator of the pixel aspect ratio of the input video.
* @video_par_d: Denominator of the pixel aspect ratio of the input video.
* @display_par_n: Numerator of the pixel aspect ratio of the display device
* @display_par_d: Denominator of the pixel aspect ratio of the display device
*
* Given the Pixel Aspect Ratio and size of an input video frame, and the
* pixel aspect ratio of the intended display device, calculates the actual
* display ratio the video will be rendered with.
*
* Returns: A boolean indicating success and a calculated Display Ratio in the
* dar_n and dar_d parameters.
* The return value is FALSE in the case of integer overflow or other error.
*
* Since: 0.10.7
*/
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)
{
gint num, den;
gint tmp_n, tmp_d;
g_return_val_if_fail (dar_n != NULL, FALSE);
g_return_val_if_fail (dar_d != NULL, FALSE);
/* Calculate (video_width * video_par_n * display_par_d) /
* (video_height * video_par_d * display_par_n) */
if (!gst_util_fraction_multiply (video_width, video_height, video_par_n,
video_par_d, &tmp_n, &tmp_d))
goto error_overflow;
if (!gst_util_fraction_multiply (tmp_n, tmp_d, display_par_d, display_par_n,
&num, &den))
goto error_overflow;
g_return_val_if_fail (num > 0, FALSE);
g_return_val_if_fail (den > 0, FALSE);
*dar_n = num;
*dar_d = den;
return TRUE;
/* ERRORS */
error_overflow:
{
GST_WARNING ("overflow in multiply");
return FALSE;
}
}
static GstVideoFormat
gst_video_format_from_rgb32_masks (int red_mask, int green_mask, int blue_mask)
{
if (red_mask == 0xff000000 && green_mask == 0x00ff0000 &&
blue_mask == 0x0000ff00) {
return GST_VIDEO_FORMAT_RGBx;
}
if (red_mask == 0x0000ff00 && green_mask == 0x00ff0000 &&
blue_mask == 0xff000000) {
return GST_VIDEO_FORMAT_BGRx;
}
if (red_mask == 0x00ff0000 && green_mask == 0x0000ff00 &&
blue_mask == 0x000000ff) {
return GST_VIDEO_FORMAT_xRGB;
}
if (red_mask == 0x000000ff && green_mask == 0x0000ff00 &&
blue_mask == 0x00ff0000) {
return GST_VIDEO_FORMAT_xBGR;
}
return GST_VIDEO_FORMAT_UNKNOWN;
}
static GstVideoFormat
gst_video_format_from_rgba32_masks (int red_mask, int green_mask,
int blue_mask, int alpha_mask)
{
if (red_mask == 0xff000000 && green_mask == 0x00ff0000 &&
blue_mask == 0x0000ff00 && alpha_mask == 0x000000ff) {
return GST_VIDEO_FORMAT_RGBA;
}
if (red_mask == 0x0000ff00 && green_mask == 0x00ff0000 &&
blue_mask == 0xff000000 && alpha_mask == 0x000000ff) {
return GST_VIDEO_FORMAT_BGRA;
}
if (red_mask == 0x00ff0000 && green_mask == 0x0000ff00 &&
blue_mask == 0x000000ff && alpha_mask == 0xff000000) {
return GST_VIDEO_FORMAT_ARGB;
}
if (red_mask == 0x000000ff && green_mask == 0x0000ff00 &&
blue_mask == 0x00ff0000 && alpha_mask == 0xff000000) {
return GST_VIDEO_FORMAT_ABGR;
}
return GST_VIDEO_FORMAT_UNKNOWN;
}
static GstVideoFormat
gst_video_format_from_rgb24_masks (int red_mask, int green_mask, int blue_mask)
{
if (red_mask == 0xff0000 && green_mask == 0x00ff00 && blue_mask == 0x0000ff) {
return GST_VIDEO_FORMAT_RGB;
}
if (red_mask == 0x0000ff && green_mask == 0x00ff00 && blue_mask == 0xff0000) {
return GST_VIDEO_FORMAT_BGR;
}
return GST_VIDEO_FORMAT_UNKNOWN;
}
#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
static GstVideoFormat
gst_video_format_from_rgb16_masks (int red_mask, int green_mask, int blue_mask)
{
if (red_mask == GST_VIDEO_COMP1_MASK_16_INT
&& green_mask == GST_VIDEO_COMP2_MASK_16_INT
&& blue_mask == GST_VIDEO_COMP3_MASK_16_INT) {
return GST_VIDEO_FORMAT_RGB16;
}
if (red_mask == GST_VIDEO_COMP3_MASK_16_INT
&& green_mask == GST_VIDEO_COMP2_MASK_16_INT
&& blue_mask == GST_VIDEO_COMP1_MASK_16_INT) {
return GST_VIDEO_FORMAT_BGR16;
}
if (red_mask == GST_VIDEO_COMP1_MASK_15_INT
&& green_mask == GST_VIDEO_COMP2_MASK_15_INT
&& blue_mask == GST_VIDEO_COMP3_MASK_15_INT) {
return GST_VIDEO_FORMAT_RGB15;
}
if (red_mask == GST_VIDEO_COMP3_MASK_15_INT
&& green_mask == GST_VIDEO_COMP2_MASK_15_INT
&& blue_mask == GST_VIDEO_COMP1_MASK_15_INT) {
return GST_VIDEO_FORMAT_BGR15;
}
return GST_VIDEO_FORMAT_UNKNOWN;
}
/**
* gst_video_format_from_masks:
* @depth: the amount of bits used for a pixel
* @bpp: the amount of bits used to store a pixel. This value is bigger than
* @depth
* @endianness: the endianness of the masks
* @red_mask: the red mask
* @green_mask: the green mask
* @blue_mask: the blue mask
* @alpha_mask: the optional alpha mask
*
* Find the #GstVideoFormat for the given parameters.
*
* Returns: a #GstVideoFormat or GST_VIDEO_FORMAT_UNKNOWN when the parameters to
* not specify a known format.
*/
GstVideoFormat
gst_video_format_from_masks (gint depth, gint bpp, gint endianness,
gint red_mask, gint green_mask, gint blue_mask, gint alpha_mask)
{
GstVideoFormat format;
/* our caps system handles 24/32bpp RGB as big-endian. */
if ((bpp == 24 || bpp == 32) && endianness == G_LITTLE_ENDIAN) {
red_mask = GUINT32_TO_BE (red_mask);
green_mask = GUINT32_TO_BE (green_mask);
blue_mask = GUINT32_TO_BE (blue_mask);
endianness = G_BIG_ENDIAN;
if (bpp == 24) {
red_mask >>= 8;
green_mask >>= 8;
blue_mask >>= 8;
}
}
if (depth == 30 && bpp == 32) {
format = GST_VIDEO_FORMAT_r210;
} else if (depth == 24 && bpp == 32) {
format = gst_video_format_from_rgb32_masks (red_mask, green_mask,
blue_mask);
} else if (depth == 32 && bpp == 32 && alpha_mask) {
format = gst_video_format_from_rgba32_masks (red_mask, green_mask,
blue_mask, alpha_mask);
} else if (depth == 24 && bpp == 24) {
format = gst_video_format_from_rgb24_masks (red_mask, green_mask,
blue_mask);
} else if ((depth == 15 || depth == 16) && bpp == 16 &&
endianness == G_BYTE_ORDER) {
format = gst_video_format_from_rgb16_masks (red_mask, green_mask,
blue_mask);
} else if (depth == 8 && bpp == 8) {
format = GST_VIDEO_FORMAT_RGB8_PALETTED;
} else if (depth == 64 && bpp == 64) {
format = gst_video_format_from_rgba32_masks (red_mask, green_mask,
blue_mask, alpha_mask);
if (format == GST_VIDEO_FORMAT_ARGB) {
format = GST_VIDEO_FORMAT_ARGB64;
} else {
format = GST_VIDEO_FORMAT_UNKNOWN;
}
} else {
format = GST_VIDEO_FORMAT_UNKNOWN;
}
return format;
}
/**
* gst_video_format_from_fourcc:
* @fourcc: a FOURCC value representing raw YUV video
*
* Converts a FOURCC value into the corresponding #GstVideoFormat.
* If the FOURCC cannot be represented by #GstVideoFormat,
* #GST_VIDEO_FORMAT_UNKNOWN is returned.
*
* Since: 0.10.16
*
* Returns: the #GstVideoFormat describing the FOURCC value
*/
GstVideoFormat
gst_video_format_from_fourcc (guint32 fourcc)
{
switch (fourcc) {
case GST_MAKE_FOURCC ('I', '4', '2', '0'):
return GST_VIDEO_FORMAT_I420;
case GST_MAKE_FOURCC ('Y', 'V', '1', '2'):
return GST_VIDEO_FORMAT_YV12;
case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'):
return GST_VIDEO_FORMAT_YUY2;
case GST_MAKE_FOURCC ('Y', 'V', 'Y', 'U'):
return GST_VIDEO_FORMAT_YVYU;
case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'):
return GST_VIDEO_FORMAT_UYVY;
case GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'):
return GST_VIDEO_FORMAT_AYUV;
case GST_MAKE_FOURCC ('Y', '4', '1', 'B'):
return GST_VIDEO_FORMAT_Y41B;
case GST_MAKE_FOURCC ('Y', '4', '2', 'B'):
return GST_VIDEO_FORMAT_Y42B;
case GST_MAKE_FOURCC ('Y', '4', '4', '4'):
return GST_VIDEO_FORMAT_Y444;
case GST_MAKE_FOURCC ('v', '2', '1', '0'):
return GST_VIDEO_FORMAT_v210;
case GST_MAKE_FOURCC ('v', '2', '1', '6'):
return GST_VIDEO_FORMAT_v216;
case GST_MAKE_FOURCC ('N', 'V', '1', '2'):
return GST_VIDEO_FORMAT_NV12;
case GST_MAKE_FOURCC ('N', 'V', '2', '1'):
return GST_VIDEO_FORMAT_NV21;
case GST_MAKE_FOURCC ('v', '3', '0', '8'):
return GST_VIDEO_FORMAT_v308;
case GST_MAKE_FOURCC ('Y', '8', '0', '0'):
case GST_MAKE_FOURCC ('Y', '8', ' ', ' '):
case GST_MAKE_FOURCC ('G', 'R', 'E', 'Y'):
return GST_VIDEO_FORMAT_Y800;
case GST_MAKE_FOURCC ('Y', '1', '6', ' '):
return GST_VIDEO_FORMAT_Y16;
case GST_MAKE_FOURCC ('U', 'Y', 'V', 'P'):
return GST_VIDEO_FORMAT_UYVP;
case GST_MAKE_FOURCC ('A', '4', '2', '0'):
return GST_VIDEO_FORMAT_A420;
case GST_MAKE_FOURCC ('Y', 'U', 'V', '9'):
return GST_VIDEO_FORMAT_YUV9;
case GST_MAKE_FOURCC ('Y', 'V', 'U', '9'):
return GST_VIDEO_FORMAT_YVU9;
case GST_MAKE_FOURCC ('I', 'Y', 'U', '1'):
return GST_VIDEO_FORMAT_IYU1;
case GST_MAKE_FOURCC ('A', 'Y', '6', '4'):
return GST_VIDEO_FORMAT_AYUV64;
default:
return GST_VIDEO_FORMAT_UNKNOWN;
}
}
/**
* gst_video_format_from_string:
* @format: a format string
*
* Convert the @format string to its #GstVideoFormat.
*
* Returns: the #GstVideoFormat for @format or GST_VIDEO_FORMAT_UNKNOWN when the
* string is not a known format.
*/
GstVideoFormat
gst_video_format_from_string (const gchar * format)
{
guint i;
g_return_val_if_fail (format != NULL, GST_VIDEO_FORMAT_UNKNOWN);
for (i = 0; i < G_N_ELEMENTS (formats); i++) {
if (strcmp (GST_VIDEO_FORMAT_INFO_NAME (&formats[i].info), format) == 0)
return GST_VIDEO_FORMAT_INFO_FORMAT (&formats[i].info);
}
return GST_VIDEO_FORMAT_UNKNOWN;
}
/**
* gst_video_format_to_fourcc:
* @format: a #GstVideoFormat video format
*
* Converts a #GstVideoFormat value into the corresponding FOURCC. Only
* a few YUV formats have corresponding FOURCC values. If @format has
* no corresponding FOURCC value, 0 is returned.
*
* Since: 0.10.16
*
* Returns: the FOURCC corresponding to @format
*/
guint32
gst_video_format_to_fourcc (GstVideoFormat format)
{
g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0);
if (format >= G_N_ELEMENTS (formats))
return 0;
return formats[format].fourcc;
}
const gchar *
gst_video_format_to_string (GstVideoFormat format)
{
g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, NULL);
if (format >= G_N_ELEMENTS (formats))
return NULL;
return GST_VIDEO_FORMAT_INFO_NAME (&formats[format].info);
}
/**
* gst_video_format_get_info:
* @format: a #GstVideoFormat
*
* Get the #GstVideoFormatInfo for @format
*
* Returns: The #GstVideoFormatInfo for @format.
*/
const GstVideoFormatInfo *
gst_video_format_get_info (GstVideoFormat format)
{
g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, NULL);
g_return_val_if_fail (format < G_N_ELEMENTS (formats), NULL);
return &formats[format].info;
}
/**
* gst_video_info_init:
* @info: a #GstVideoInfo
*
* Initialize @info with default values.
*/
void
gst_video_info_init (GstVideoInfo * info)
{
g_return_if_fail (info != NULL);
memset (info, 0, sizeof (GstVideoInfo));
info->finfo = &formats[GST_VIDEO_FORMAT_UNKNOWN].info;
info->views = 1;
/* arrange for sensible defaults, e.g. if turned into caps */
info->fps_n = 0;
info->fps_d = 1;
info->par_n = 1;
info->par_d = 1;
}
/**
* gst_video_info_set_format:
* @info: a #GstVideoInfo
* @format: the format
* @width: a width
* @height: a height
*
* Set the default info for a video frame of @format and @width and @height.
*/
void
gst_video_info_set_format (GstVideoInfo * info, GstVideoFormat format,
guint width, guint height)
{
const GstVideoFormatInfo *finfo;
g_return_if_fail (info != NULL);
g_return_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN);
finfo = &formats[format].info;
info->flags = 0;
info->finfo = finfo;
info->width = width;
info->height = height;
fill_planes (info);
}
static const gchar *interlace_mode[] = {
"progressive",
"interleaved",
"mixed",
"fields"
};
static const gchar *
gst_interlace_mode_to_string (GstVideoInterlaceMode mode)
{
if (mode < 0 || mode >= G_N_ELEMENTS (interlace_mode))
return NULL;
return interlace_mode[mode];
}
static GstVideoInterlaceMode
gst_interlace_mode_from_string (const gchar * mode)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (interlace_mode); i++) {
if (g_str_equal (interlace_mode[i], mode))
return i;
}
return GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
}
typedef struct
{
const gchar *name;
GstVideoChromaSite site;
} ChromaSiteInfo;
static const ChromaSiteInfo chromasite[] = {
{"jpeg", GST_VIDEO_CHROMA_SITE_JPEG},
{"mpeg2", GST_VIDEO_CHROMA_SITE_MPEG2},
{"dv", GST_VIDEO_CHROMA_SITE_DV}
};
static GstVideoChromaSite
gst_video_chroma_from_string (const gchar * s)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (chromasite); i++) {
if (g_str_equal (chromasite[i].name, s))
return chromasite[i].site;
}
return GST_VIDEO_CHROMA_SITE_UNKNOWN;
}
static const gchar *
gst_video_chroma_to_string (GstVideoChromaSite site)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (chromasite); i++) {
if (chromasite[i].site == site)
return chromasite[i].name;
}
return NULL;
}
typedef struct
{
const gchar *name;
GstVideoColorimetry color;
} ColorimetryInfo;
#define MAKE_COLORIMETRY(n,r,m,t,p) { GST_VIDEO_COLORIMETRY_ ##n, \
{ GST_VIDEO_COLOR_RANGE ##r, GST_VIDEO_COLOR_MATRIX_ ##m, \
GST_VIDEO_TRANSFER_ ##t, GST_VIDEO_COLOR_PRIMARIES_ ##p } }
static const ColorimetryInfo colorimetry[] = {
MAKE_COLORIMETRY (BT601, _16_235, BT601, BT709, BT470M),
MAKE_COLORIMETRY (BT709, _16_235, BT709, BT709, BT709),
MAKE_COLORIMETRY (SMPTE240M, _16_235, SMPTE240M, SMPTE240M, SMPTE240M),
};
static const ColorimetryInfo *
gst_video_get_colorimetry (const gchar * s)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (colorimetry); i++) {
if (g_str_equal (colorimetry[i].name, s))
return &colorimetry[i];
}
return NULL;
}
#define IS_EQUAL(ci,i) (((ci)->color.range == (i)->range) && \
((ci)->color.matrix == (i)->matrix) && \
((ci)->color.transfer == (i)->transfer) && \
((ci)->color.primaries == (i)->primaries))
/**
* gst_video_colorimetry_from_string
* @cinfo: a #GstVideoColorimetry
* @color: a colorimetry string
*
* Parse the colorimetry string and update @cinfo with the parsed
* values.
*
* Returns: #TRUE if @color points to valid colorimetry info.
*/
gboolean
gst_video_colorimetry_from_string (GstVideoColorimetry * cinfo,
const gchar * color)
{
const ColorimetryInfo *ci;
if ((ci = gst_video_get_colorimetry (color))) {
*cinfo = ci->color;
} else {
/* FIXME, split and parse */
cinfo->range = GST_VIDEO_COLOR_RANGE_16_235;
cinfo->matrix = GST_VIDEO_COLOR_MATRIX_BT601;
cinfo->transfer = GST_VIDEO_TRANSFER_BT709;
cinfo->primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
}
return TRUE;
}
static void
gst_video_caps_set_colorimetry (GstCaps * caps, GstVideoColorimetry * cinfo)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (colorimetry); i++) {
if (IS_EQUAL (&colorimetry[i], cinfo)) {
gst_caps_set_simple (caps, "colorimetry", G_TYPE_STRING,
colorimetry[i].name, NULL);
return;
}
}
/* FIXME, construct colorimetry */
}
/**
* gst_video_colorimetry_matches:
* @info: a #GstVideoInfo
* @color: a colorimetry string
*
* Check if the colorimetry information in @info matches that of the
* string @color.
*
* Returns: #TRUE if @color conveys the same colorimetry info as the color
* information in @info.
*/
gboolean
gst_video_colorimetry_matches (GstVideoColorimetry * cinfo, const gchar * color)
{
const ColorimetryInfo *ci;
if ((ci = gst_video_get_colorimetry (color)))
return IS_EQUAL (ci, cinfo);
return FALSE;
}
/**
* gst_video_info_from_caps:
* @info: a #GstVideoInfo
* @caps: a #GstCaps
*
* Parse @caps and update @info.
*
* Returns: TRUE if @caps could be parsed
*/
gboolean
gst_video_info_from_caps (GstVideoInfo * info, const GstCaps * caps)
{
GstStructure *structure;
const gchar *s;
GstVideoFormat format;
gint width, height, views;
gint fps_n, fps_d;
gint par_n, par_d;
g_return_val_if_fail (info != NULL, FALSE);
g_return_val_if_fail (caps != NULL, FALSE);
g_return_val_if_fail (gst_caps_is_fixed (caps), FALSE);
GST_DEBUG ("parsing caps %" GST_PTR_FORMAT, caps);
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_has_name (structure, "video/x-raw"))
goto wrong_name;
if (!(s = gst_structure_get_string (structure, "format")))
goto no_format;
format = gst_video_format_from_string (s);
if (format == GST_VIDEO_FORMAT_UNKNOWN)
goto unknown_format;
if (!gst_structure_get_int (structure, "width", &width))
goto no_width;
if (!gst_structure_get_int (structure, "height", &height))
goto no_height;
gst_video_info_set_format (info, format, width, height);
if (gst_structure_get_fraction (structure, "framerate", &fps_n, &fps_d)) {
if (fps_n == 0) {
/* variable framerate */
info->flags |= GST_VIDEO_FLAG_VARIABLE_FPS;
/* see if we have a max-framerate */
gst_structure_get_fraction (structure, "max-framerate", &fps_n, &fps_d);
}
info->fps_n = fps_n;
info->fps_d = fps_d;
} else {
/* unspecified is variable framerate */
info->fps_n = 0;
info->fps_d = 1;
}
if ((s = gst_structure_get_string (structure, "interlace-mode")))
info->interlace_mode = gst_interlace_mode_from_string (s);
else
info->interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
if (gst_structure_get_int (structure, "views", &views))
info->views = views;
else
info->views = 1;
if ((s = gst_structure_get_string (structure, "chroma-site")))
info->chroma_site = gst_video_chroma_from_string (s);
else
info->chroma_site = GST_VIDEO_CHROMA_SITE_UNKNOWN;
if ((s = gst_structure_get_string (structure, "colorimetry")))
gst_video_colorimetry_from_string (&info->colorimetry, s);
else
memset (&info->colorimetry, 0, sizeof (GstVideoColorimetry));
if (gst_structure_get_fraction (structure, "pixel-aspect-ratio",
&par_n, &par_d)) {
info->par_n = par_n;
info->par_d = par_d;
} else {
info->par_n = 1;
info->par_d = 1;
}
return TRUE;
/* ERROR */
wrong_name:
{
GST_ERROR ("wrong name '%s', expected video/x-raw",
gst_structure_get_name (structure));
return FALSE;
}
no_format:
{
GST_ERROR ("no format given");
return FALSE;
}
unknown_format:
{
GST_ERROR ("unknown format '%s' given", s);
return FALSE;
}
no_width:
{
GST_ERROR ("no width property given");
return FALSE;
}
no_height:
{
GST_ERROR ("no height property given");
return FALSE;
}
}
/**
* gst_video_info_to_caps:
* @info: a #GstVideoInfo
*
* Convert the values of @info into a #GstCaps.
*
* Returns: a new #GstCaps containing the info of @info.
*/
GstCaps *
gst_video_info_to_caps (GstVideoInfo * info)
{
GstCaps *caps;
const gchar *format;
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (info->finfo != NULL, NULL);
g_return_val_if_fail (info->finfo->format != GST_VIDEO_FORMAT_UNKNOWN, NULL);
format = gst_video_format_to_string (info->finfo->format);
g_return_val_if_fail (format != NULL, NULL);
caps = gst_caps_new_simple ("video/x-raw",
"format", G_TYPE_STRING, format,
"width", G_TYPE_INT, info->width,
"height", G_TYPE_INT, info->height,
"pixel-aspect-ratio", GST_TYPE_FRACTION, info->par_n, info->par_d, NULL);
gst_caps_set_simple (caps, "interlace-mode", G_TYPE_STRING,
gst_interlace_mode_to_string (info->interlace_mode), NULL);
if (info->chroma_site != GST_VIDEO_CHROMA_SITE_UNKNOWN)
gst_caps_set_simple (caps, "chroma-site", G_TYPE_STRING,
gst_video_chroma_to_string (info->chroma_site), NULL);
gst_video_caps_set_colorimetry (caps, &info->colorimetry);
if (info->views > 1)
gst_caps_set_simple (caps, "views", G_TYPE_INT, info->views, NULL);
if (info->flags & GST_VIDEO_FLAG_VARIABLE_FPS && info->fps_n != 0) {
/* variable fps with a max-framerate */
gst_caps_set_simple (caps, "framerate", GST_TYPE_FRACTION, 0, 1,
"max-framerate", GST_TYPE_FRACTION, info->fps_n, info->fps_d, NULL);
} else {
/* no variable fps or no max-framerate */
gst_caps_set_simple (caps, "framerate", GST_TYPE_FRACTION,
info->fps_n, info->fps_d, NULL);
}
return caps;
}
/**
* gst_video_frame_map_id:
* @frame: pointer to #GstVideoFrame
* @info: a #GstVideoInfo
* @buffer: the buffer to map
* @id: the frame id to map
* @flags: #GstMapFlags
*
* Use @info and @buffer to fill in the values of @frame with the video frame
* information of frame @id.
*
* When @id is -1, the default frame is mapped. When @id != -1, this function
* will return %FALSE when there is no GstVideoMeta with that id.
*
* All video planes of @buffer will be mapped and the pointers will be set in
* @frame->data.
*
* Returns: %TRUE on success.
*/
gboolean
gst_video_frame_map_id (GstVideoFrame * frame, GstVideoInfo * info,
GstBuffer * buffer, gint id, GstMapFlags flags)
{
GstVideoMeta *meta;
guint8 *data;
gsize size;
gint i;
g_return_val_if_fail (frame != NULL, FALSE);
g_return_val_if_fail (info != NULL, FALSE);
g_return_val_if_fail (GST_IS_BUFFER (buffer), FALSE);
if (id == -1)
meta = gst_buffer_get_video_meta (buffer);
else
meta = gst_buffer_get_video_meta_id (buffer, id);
frame->buffer = buffer;
frame->meta = meta;
if (meta) {
frame->info.flags = meta->flags;
frame->info.finfo = &formats[meta->format].info;
frame->info.width = meta->width;
frame->info.height = meta->height;
frame->id = meta->id;
for (i = 0; i < info->finfo->n_planes; i++) {
frame->data[i] =
gst_video_meta_map (meta, i, &frame->info.stride[i], flags);
}
} else {
/* no metadata, we really need to have the metadata when the id is
* specified. */
if (id != -1)
goto no_metadata;
/* copy the info */
frame->info = *info;
frame->id = id;
data = gst_buffer_map (buffer, &size, NULL, flags);
/* do some sanity checks */
if (size < info->size)
goto invalid_size;
/* set up pointers */
for (i = 0; i < info->finfo->n_planes; i++) {
frame->data[i] = data + info->offset[i];
}
}
return TRUE;
/* ERRORS */
no_metadata:
{
GST_ERROR ("no GstVideoMeta for id %d", id);
return FALSE;
}
invalid_size:
{
GST_ERROR ("invalid buffer size %" G_GSIZE_FORMAT " < %" G_GSIZE_FORMAT,
size, info->size);
gst_buffer_unmap (buffer, data, size);
return FALSE;
}
}
/**
* gst_video_frame_map:
* @frame: pointer to #GstVideoFrame
* @info: a #GstVideoInfo
* @buffer: the buffer to map
* @flags: #GstMapFlags
*
* Use @info and @buffer to fill in the values of @frame.
*
* All video planes of @buffer will be mapped and the pointers will be set in
* @frame->data.
*
* Returns: %TRUE on success.
*/
gboolean
gst_video_frame_map (GstVideoFrame * frame, GstVideoInfo * info,
GstBuffer * buffer, GstMapFlags flags)
{
return gst_video_frame_map_id (frame, info, buffer, -1, flags);
}
/**
* gst_video_frame_unmap:
* @frame: a #GstVideoFrame
*
* Unmap the memory previously mapped with gst_video_frame_map.
*/
void
gst_video_frame_unmap (GstVideoFrame * frame)
{
GstBuffer *buffer;
GstVideoMeta *meta;
gint i;
g_return_if_fail (frame != NULL);
buffer = frame->buffer;
meta = frame->meta;
if (meta) {
for (i = 0; i < frame->info.finfo->n_planes; i++) {
gst_video_meta_unmap (meta, i, frame->data[i]);
}
} else {
guint8 *data;
data = frame->data[0];
data -= frame->info.offset[0];
gst_buffer_unmap (buffer, data, -1);
}
}
/**
* gst_video_frame_copy:
* @dest: a #GstVideoFrame
* @src: a #GstVideoFrame
*
* Copy the contents from @src to @dest.
*
* Returns: TRUE if the contents could be copied.
*/
gboolean
gst_video_frame_copy (GstVideoFrame * dest, const GstVideoFrame * src)
{
guint i, n_planes;
const GstVideoInfo *sinfo;
GstVideoInfo *dinfo;
sinfo = &src->info;
dinfo = &dest->info;
g_return_val_if_fail (dinfo->finfo->format == sinfo->finfo->format, FALSE);
g_return_val_if_fail (dinfo->width == sinfo->width
&& dinfo->height == sinfo->height, FALSE);
n_planes = dinfo->finfo->n_planes;
for (i = 0; i < n_planes; i++) {
guint w, h, j;
guint8 *sp, *dp;
gint ss, ds;
sp = src->data[i];
dp = dest->data[i];
ss = sinfo->stride[i];
ds = dinfo->stride[i];
w = MIN (ABS (ss), ABS (ds));
h = GST_VIDEO_FRAME_COMP_HEIGHT (dest, i);
GST_DEBUG ("w %d h %d", w, h);
for (j = 0; j < h; j++) {
memcpy (dp, sp, w);
dp += ds;
sp += ss;
}
}
return TRUE;
}
static int
fill_planes (GstVideoInfo * info)
{
gint width, height;
width = info->width;
height = info->height;
switch (info->finfo->format) {
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_YVYU:
case GST_VIDEO_FORMAT_UYVY:
info->stride[0] = GST_ROUND_UP_4 (width * 2);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_AYUV:
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_ABGR:
case GST_VIDEO_FORMAT_r210:
info->stride[0] = width * 4;
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_RGB16:
case GST_VIDEO_FORMAT_BGR16:
case GST_VIDEO_FORMAT_RGB15:
case GST_VIDEO_FORMAT_BGR15:
info->stride[0] = GST_ROUND_UP_4 (width * 2);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_BGR:
case GST_VIDEO_FORMAT_v308:
info->stride[0] = GST_ROUND_UP_4 (width * 3);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_v210:
info->stride[0] = ((width + 47) / 48) * 128;
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_v216:
info->stride[0] = GST_ROUND_UP_8 (width * 4);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_GRAY8:
case GST_VIDEO_FORMAT_Y800:
info->stride[0] = GST_ROUND_UP_4 (width);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_GRAY16_BE:
case GST_VIDEO_FORMAT_GRAY16_LE:
case GST_VIDEO_FORMAT_Y16:
info->stride[0] = GST_ROUND_UP_4 (width * 2);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_UYVP:
info->stride[0] = GST_ROUND_UP_4 ((width * 2 * 5 + 3) / 4);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_RGB8_PALETTED:
info->stride[0] = GST_ROUND_UP_4 (width);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_IYU1:
info->stride[0] = GST_ROUND_UP_4 (GST_ROUND_UP_4 (width) +
GST_ROUND_UP_4 (width) / 2);
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_ARGB64:
case GST_VIDEO_FORMAT_AYUV64:
info->stride[0] = width * 8;
info->offset[0] = 0;
info->size = info->stride[0] * height;
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12: /* same as I420, but plane 1+2 swapped */
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2);
info->stride[2] = info->stride[1];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * GST_ROUND_UP_2 (height);
info->offset[2] = info->offset[1] +
info->stride[1] * (GST_ROUND_UP_2 (height) / 2);
info->size = info->offset[2] +
info->stride[2] * (GST_ROUND_UP_2 (height) / 2);
break;
case GST_VIDEO_FORMAT_Y41B:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = GST_ROUND_UP_16 (width) / 4;
info->stride[2] = info->stride[1];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
info->offset[2] = info->offset[1] + info->stride[1] * height;
/* simplification of ROUNDUP4(w)*h + 2*((ROUNDUP16(w)/4)*h */
info->size = (info->stride[0] + (GST_ROUND_UP_16 (width) / 2)) * height;
break;
case GST_VIDEO_FORMAT_Y42B:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = GST_ROUND_UP_8 (width) / 2;
info->stride[2] = info->stride[1];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
info->offset[2] = info->offset[1] + info->stride[1] * height;
/* simplification of ROUNDUP4(w)*h + 2*(ROUNDUP8(w)/2)*h */
info->size = (info->stride[0] + GST_ROUND_UP_8 (width)) * height;
break;
case GST_VIDEO_FORMAT_Y444:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = info->stride[0];
info->stride[2] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
info->offset[2] = info->offset[1] * 2;
info->size = info->stride[0] * height * 3;
break;
case GST_VIDEO_FORMAT_NV12:
case GST_VIDEO_FORMAT_NV21:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * GST_ROUND_UP_2 (height);
info->size = info->stride[0] * GST_ROUND_UP_2 (height) * 3 / 2;
break;
case GST_VIDEO_FORMAT_A420:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2);
info->stride[2] = info->stride[1];
info->stride[3] = info->stride[0];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * GST_ROUND_UP_2 (height);
info->offset[2] = info->offset[1] +
info->stride[1] * (GST_ROUND_UP_2 (height) / 2);
info->offset[3] = info->offset[2] +
info->stride[2] * (GST_ROUND_UP_2 (height) / 2);
info->size = info->offset[3] + info->stride[0];
break;
case GST_VIDEO_FORMAT_YUV9:
case GST_VIDEO_FORMAT_YVU9:
info->stride[0] = GST_ROUND_UP_4 (width);
info->stride[1] = GST_ROUND_UP_4 (GST_ROUND_UP_4 (width) / 4);
info->stride[2] = info->stride[1];
info->offset[0] = 0;
info->offset[1] = info->stride[0] * height;
info->offset[2] = info->offset[1] +
info->stride[1] * (GST_ROUND_UP_4 (height) / 4);
info->size = info->offset[2] +
info->stride[2] * (GST_ROUND_UP_4 (height) / 4);
break;
case GST_VIDEO_FORMAT_UNKNOWN:
GST_ERROR ("invalid format");
g_warning ("invalid format");
break;
}
return 0;
}
/**
* gst_video_format_convert:
* @info: a #GstVideoInfo
* @src_format: #GstFormat of the @src_value
* @src_value: value to convert
* @dest_format: #GstFormat of the @dest_value
* @dest_value: pointer to destination value
*
* Converts among various #GstFormat types. This function handles
* GST_FORMAT_BYTES, GST_FORMAT_TIME, and GST_FORMAT_DEFAULT. For
* raw video, GST_FORMAT_DEFAULT corresponds to video frames. This
* function can be used to handle pad queries of the type GST_QUERY_CONVERT.
*
* Since: 0.10.16
*
* Returns: TRUE if the conversion was successful.
*/
gboolean
gst_video_info_convert (GstVideoInfo * info,
GstFormat src_format, gint64 src_value,
GstFormat dest_format, gint64 * dest_value)
{
gboolean ret = FALSE;
int size, fps_n, fps_d;
g_return_val_if_fail (info != NULL, 0);
g_return_val_if_fail (info->finfo != NULL, 0);
g_return_val_if_fail (info->finfo->format != GST_VIDEO_FORMAT_UNKNOWN, 0);
g_return_val_if_fail (info->size > 0, 0);
size = info->size;
fps_n = info->fps_n;
fps_d = info->fps_d;
GST_DEBUG ("converting value %" G_GINT64_FORMAT " from %s to %s",
src_value, gst_format_get_name (src_format),
gst_format_get_name (dest_format));
if (src_format == dest_format) {
*dest_value = src_value;
ret = TRUE;
goto done;
}
if (src_value == -1) {
*dest_value = -1;
ret = TRUE;
goto done;
}
/* bytes to frames */
if (src_format == GST_FORMAT_BYTES && dest_format == GST_FORMAT_DEFAULT) {
if (size != 0) {
*dest_value = gst_util_uint64_scale_int (src_value, 1, size);
} else {
GST_ERROR ("blocksize is 0");
*dest_value = 0;
}
ret = TRUE;
goto done;
}
/* frames to bytes */
if (src_format == GST_FORMAT_DEFAULT && dest_format == GST_FORMAT_BYTES) {
*dest_value = gst_util_uint64_scale_int (src_value, size, 1);
ret = TRUE;
goto done;
}
/* time to frames */
if (src_format == GST_FORMAT_TIME && dest_format == GST_FORMAT_DEFAULT) {
if (fps_d != 0) {
*dest_value = gst_util_uint64_scale (src_value,
fps_n, GST_SECOND * fps_d);
} else {
GST_ERROR ("framerate denominator is 0");
*dest_value = 0;
}
ret = TRUE;
goto done;
}
/* frames to time */
if (src_format == GST_FORMAT_DEFAULT && dest_format == GST_FORMAT_TIME) {
if (fps_n != 0) {
*dest_value = gst_util_uint64_scale (src_value,
GST_SECOND * fps_d, fps_n);
} else {
GST_ERROR ("framerate numerator is 0");
*dest_value = 0;
}
ret = TRUE;
goto done;
}
/* time to bytes */
if (src_format == GST_FORMAT_TIME && dest_format == GST_FORMAT_BYTES) {
if (fps_d != 0) {
*dest_value = gst_util_uint64_scale (src_value,
fps_n * size, GST_SECOND * fps_d);
} else {
GST_ERROR ("framerate denominator is 0");
*dest_value = 0;
}
ret = TRUE;
goto done;
}
/* bytes to time */
if (src_format == GST_FORMAT_BYTES && dest_format == GST_FORMAT_TIME) {
if (fps_n != 0 && size != 0) {
*dest_value = gst_util_uint64_scale (src_value,
GST_SECOND * fps_d, fps_n * size);
} else {
GST_ERROR ("framerate denominator and/or blocksize is 0");
*dest_value = 0;
}
ret = TRUE;
}
done:
GST_DEBUG ("ret=%d result %" G_GINT64_FORMAT, ret, *dest_value);
return ret;
}
#define GST_VIDEO_EVENT_STILL_STATE_NAME "GstEventStillFrame"
/**
* gst_video_event_new_still_frame:
* @in_still: boolean value for the still-frame state of the event.
*
* Creates a new Still Frame event. If @in_still is %TRUE, then the event
* represents the start of a still frame sequence. If it is %FALSE, then
* the event ends a still frame sequence.
*
* To parse an event created by gst_video_event_new_still_frame() use
* gst_video_event_parse_still_frame().
*
* Returns: The new GstEvent
* Since: 0.10.26
*/
GstEvent *
gst_video_event_new_still_frame (gboolean in_still)
{
GstEvent *still_event;
GstStructure *s;
s = gst_structure_new (GST_VIDEO_EVENT_STILL_STATE_NAME,
"still-state", G_TYPE_BOOLEAN, in_still, NULL);
still_event = gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, s);
return still_event;
}
/**
* gst_video_event_parse_still_frame:
* @event: A #GstEvent to parse
* @in_still: A boolean to receive the still-frame status from the event, or NULL
*
* Parse a #GstEvent, identify if it is a Still Frame event, and
* return the still-frame state from the event if it is.
* If the event represents the start of a still frame, the in_still
* variable will be set to TRUE, otherwise FALSE. It is OK to pass NULL for the
* in_still variable order to just check whether the event is a valid still-frame
* event.
*
* Create a still frame event using gst_video_event_new_still_frame()
*
* Returns: %TRUE if the event is a valid still-frame event. %FALSE if not
* Since: 0.10.26
*/
gboolean
gst_video_event_parse_still_frame (GstEvent * event, gboolean * in_still)
{
const GstStructure *s;
gboolean ev_still_state;
g_return_val_if_fail (event != NULL, FALSE);
if (GST_EVENT_TYPE (event) != GST_EVENT_CUSTOM_DOWNSTREAM)
return FALSE; /* Not a still frame event */
s = gst_event_get_structure (event);
if (s == NULL
|| !gst_structure_has_name (s, GST_VIDEO_EVENT_STILL_STATE_NAME))
return FALSE; /* Not a still frame event */
if (!gst_structure_get_boolean (s, "still-state", &ev_still_state))
return FALSE; /* Not a still frame event */
if (in_still)
*in_still = ev_still_state;
return TRUE;
}
/**
* gst_video_parse_caps_palette:
* @caps: #GstCaps to parse
*
* Returns the palette data from the caps as a #GstBuffer. For
* #GST_VIDEO_FORMAT_RGB8_PALETTED this is containing 256 #guint32
* values, each containing ARGB colors in native endianness.
*
* Returns: a #GstBuffer containing the palette data. Unref after usage.
* Since: 0.10.32
*/
GstBuffer *
gst_video_parse_caps_palette (GstCaps * caps)
{
GstStructure *s;
const GValue *p_v;
GstBuffer *p;
if (!gst_caps_is_fixed (caps))
return NULL;
s = gst_caps_get_structure (caps, 0);
p_v = gst_structure_get_value (s, "palette_data");
if (!p_v || !GST_VALUE_HOLDS_BUFFER (p_v))
return NULL;
p = g_value_dup_boxed (p_v);
return p;
}
#define GST_VIDEO_EVENT_FORCE_KEY_UNIT_NAME "GstForceKeyUnit"
/**
* gst_video_event_new_downstream_force_key_unit:
* @timestamp: the timestamp of the buffer that starts a new key unit
* @stream_time: the stream_time of the buffer that starts a new key unit
* @running_time: the running_time of the buffer that starts a new key unit
* @all_headers: %TRUE to produce headers when starting a new key unit
* @count: integer that can be used to number key units
*
* Creates a new downstream force key unit event. A downstream force key unit
* event can be sent down the pipeline to request downstream elements to produce
* a key unit. A downstream force key unit event must also be sent when handling
* an upstream force key unit event to notify downstream that the latter has been
* handled.
*
* To parse an event created by gst_video_event_new_downstream_force_key_unit() use
* gst_video_event_parse_downstream_force_key_unit().
*
* Returns: The new GstEvent
* Since: 0.10.36
*/
GstEvent *
gst_video_event_new_downstream_force_key_unit (GstClockTime timestamp,
GstClockTime stream_time, GstClockTime running_time, gboolean all_headers,
guint count)
{
GstEvent *force_key_unit_event;
GstStructure *s;
s = gst_structure_new (GST_VIDEO_EVENT_FORCE_KEY_UNIT_NAME,
"timestamp", G_TYPE_UINT64, timestamp,
"stream-time", G_TYPE_UINT64, stream_time,
"running-time", G_TYPE_UINT64, running_time,
"all-headers", G_TYPE_BOOLEAN, all_headers,
"count", G_TYPE_UINT, count, NULL);
force_key_unit_event = gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, s);
return force_key_unit_event;
}
/**
* gst_video_event_new_upstream_force_key_unit:
* @running_time: the running_time at which a new key unit should be produced
* @all_headers: %TRUE to produce headers when starting a new key unit
* @count: integer that can be used to number key units
*
* Creates a new upstream force key unit event. An upstream force key unit event
* can be sent to request upstream elements to produce a key unit.
*
* @running_time can be set to request a new key unit at a specific
* running_time. If set to GST_CLOCK_TIME_NONE, upstream elements will produce a
* new key unit as soon as possible.
*
* To parse an event created by gst_video_event_new_downstream_force_key_unit() use
* gst_video_event_parse_downstream_force_key_unit().
*
* Returns: The new GstEvent
* Since: 0.10.36
*/
GstEvent *
gst_video_event_new_upstream_force_key_unit (GstClockTime running_time,
gboolean all_headers, guint count)
{
GstEvent *force_key_unit_event;
GstStructure *s;
s = gst_structure_new (GST_VIDEO_EVENT_FORCE_KEY_UNIT_NAME,
"running-time", GST_TYPE_CLOCK_TIME, running_time,
"all-headers", G_TYPE_BOOLEAN, all_headers,
"count", G_TYPE_UINT, count, NULL);
force_key_unit_event = gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM, s);
return force_key_unit_event;
}
/**
* gst_video_event_is_force_key_unit:
* @event: A #GstEvent to check
*
* Checks if an event is a force key unit event. Returns true for both upstream
* and downstream force key unit events.
*
* Returns: %TRUE if the event is a valid force key unit event
* Since: 0.10.36
*/
gboolean
gst_video_event_is_force_key_unit (GstEvent * event)
{
const GstStructure *s;
g_return_val_if_fail (event != NULL, FALSE);
if (GST_EVENT_TYPE (event) != GST_EVENT_CUSTOM_DOWNSTREAM &&
GST_EVENT_TYPE (event) != GST_EVENT_CUSTOM_UPSTREAM)
return FALSE; /* Not a force key unit event */
s = gst_event_get_structure (event);
if (s == NULL
|| !gst_structure_has_name (s, GST_VIDEO_EVENT_FORCE_KEY_UNIT_NAME))
return FALSE;
return TRUE;
}
/**
* gst_video_event_parse_downstream_force_key_unit:
* @event: A #GstEvent to parse
* @timestamp: (out): A pointer to the timestamp in the event
* @stream_time: (out): A pointer to the stream-time in the event
* @running_time: (out): A pointer to the running-time in the event
* @all_headers: (out): A pointer to the all_headers flag in the event
* @count: (out): A pointer to the count field of the event
*
* Get timestamp, stream-time, running-time, all-headers and count in the force
* key unit event. See gst_video_event_new_downstream_force_key_unit() for a
* full description of the downstream force key unit event.
*
* Returns: %TRUE if the event is a valid downstream force key unit event.
* Since: 0.10.36
*/
gboolean
gst_video_event_parse_downstream_force_key_unit (GstEvent * event,
GstClockTime * timestamp, GstClockTime * stream_time,
GstClockTime * running_time, gboolean * all_headers, guint * count)
{
const GstStructure *s;
GstClockTime ev_timestamp, ev_stream_time, ev_running_time;
gboolean ev_all_headers;
guint ev_count;
g_return_val_if_fail (event != NULL, FALSE);
if (GST_EVENT_TYPE (event) != GST_EVENT_CUSTOM_DOWNSTREAM)
return FALSE; /* Not a force key unit event */
s = gst_event_get_structure (event);
if (s == NULL
|| !gst_structure_has_name (s, GST_VIDEO_EVENT_FORCE_KEY_UNIT_NAME))
return FALSE;
if (!gst_structure_get_clock_time (s, "timestamp", &ev_timestamp))
return FALSE; /* Not a force key unit event */
if (!gst_structure_get_clock_time (s, "stream-time", &ev_stream_time))
return FALSE; /* Not a force key unit event */
if (!gst_structure_get_clock_time (s, "running-time", &ev_running_time))
return FALSE; /* Not a force key unit event */
if (!gst_structure_get_boolean (s, "all-headers", &ev_all_headers))
return FALSE; /* Not a force key unit event */
if (!gst_structure_get_uint (s, "count", &ev_count))
return FALSE; /* Not a force key unit event */
if (timestamp)
*timestamp = ev_timestamp;
if (stream_time)
*stream_time = ev_stream_time;
if (running_time)
*running_time = ev_running_time;
if (all_headers)
*all_headers = ev_all_headers;
if (count)
*count = ev_count;
return TRUE;
}
/**
* gst_video_event_parse_upstream_force_key_unit:
* @event: A #GstEvent to parse
* @running_time: (out): A pointer to the running_time in the event
* @all_headers: (out): A pointer to the all_headers flag in the event
* @count: (out): A pointer to the count field in the event
*
* Get running-time, all-headers and count in the force key unit event. See
* gst_video_event_new_upstream_force_key_unit() for a full description of the
* upstream force key unit event.
*
* Create an upstream force key unit event using gst_video_event_new_upstream_force_key_unit()
*
* Returns: %TRUE if the event is a valid upstream force-key-unit event. %FALSE if not
* Since: 0.10.36
*/
gboolean
gst_video_event_parse_upstream_force_key_unit (GstEvent * event,
GstClockTime * running_time, gboolean * all_headers, guint * count)
{
const GstStructure *s;
GstClockTime ev_running_time;
gboolean ev_all_headers;
guint ev_count;
g_return_val_if_fail (event != NULL, FALSE);
if (GST_EVENT_TYPE (event) != GST_EVENT_CUSTOM_UPSTREAM)
return FALSE; /* Not a force key unit event */
s = gst_event_get_structure (event);
if (s == NULL
|| !gst_structure_has_name (s, GST_VIDEO_EVENT_FORCE_KEY_UNIT_NAME))
return FALSE;
if (!gst_structure_get_clock_time (s, "running-time", &ev_running_time))
return FALSE; /* Not a force key unit event */
if (!gst_structure_get_boolean (s, "all-headers", &ev_all_headers))
return FALSE; /* Not a force key unit event */
if (!gst_structure_get_uint (s, "count", &ev_count))
return FALSE; /* Not a force key unit event */
if (running_time)
*running_time = ev_running_time;
if (all_headers)
*all_headers = ev_all_headers;
if (count)
*count = ev_count;
return TRUE;
}
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