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Diffstat (limited to 'gst-libs/gst/video/video.c')
| -rw-r--r-- | gst-libs/gst/video/video.c | 1570 |
1 files changed, 0 insertions, 1570 deletions
diff --git a/gst-libs/gst/video/video.c b/gst-libs/gst/video/video.c deleted file mode 100644 index 84e32a11..00000000 --- a/gst-libs/gst/video/video.c +++ /dev/null @@ -1,1570 +0,0 @@ -/* 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 "video.h" - -/** - * 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> - */ - -static GstVideoFormat gst_video_format_from_rgb32_masks (int red_mask, - int green_mask, int blue_mask); -static GstVideoFormat gst_video_format_from_rgba32_masks (int red_mask, - int green_mask, int blue_mask, int alpha_mask); -static GstVideoFormat gst_video_format_from_rgb24_masks (int red_mask, - int green_mask, int blue_mask); - - -/** - * gst_video_frame_rate: - * @pad: pointer to a #GstPad - * - * A convenience function to retrieve a GValue holding the framerate - * from the caps on a pad. - * - * The pad needs to have negotiated caps containing a framerate property. - * - * Returns: NULL if the pad has no configured caps or the configured caps - * do not contain a framerate. - * - */ -const GValue * -gst_video_frame_rate (GstPad * pad) -{ - const GValue *fps; - gchar *fps_string; - - const GstCaps *caps = NULL; - GstStructure *structure; - - /* get pad caps */ - caps = GST_PAD_CAPS (pad); - if (caps == NULL) { - g_warning ("gstvideo: failed to get caps of pad %s:%s", - GST_DEBUG_PAD_NAME (pad)); - return NULL; - } - - structure = gst_caps_get_structure (caps, 0); - if ((fps = gst_structure_get_value (structure, "framerate")) == NULL) { - g_warning ("gstvideo: failed to get framerate property of pad %s:%s", - GST_DEBUG_PAD_NAME (pad)); - return NULL; - } - if (!GST_VALUE_HOLDS_FRACTION (fps)) { - g_warning - ("gstvideo: framerate property of pad %s:%s is not of type Fraction", - GST_DEBUG_PAD_NAME (pad)); - return NULL; - } - - fps_string = gst_value_serialize (fps); - GST_DEBUG ("Framerate request on pad %s:%s: %s", - GST_DEBUG_PAD_NAME (pad), fps_string); - g_free (fps_string); - - return fps; -} - -/** - * gst_video_get_size: - * @pad: pointer to a #GstPad - * @width: pointer to integer to hold pixel width of the video frames (output) - * @height: pointer to integer to hold pixel height of the video frames (output) - * - * Inspect the caps of the provided pad and retrieve the width and height of - * the video frames it is configured for. - * - * The pad needs to have negotiated caps containing width and height properties. - * - * Returns: TRUE if the width and height could be retrieved. - * - */ -gboolean -gst_video_get_size (GstPad * pad, gint * width, gint * height) -{ - const GstCaps *caps = NULL; - GstStructure *structure; - gboolean ret; - - g_return_val_if_fail (pad != NULL, FALSE); - g_return_val_if_fail (width != NULL, FALSE); - g_return_val_if_fail (height != NULL, FALSE); - - caps = GST_PAD_CAPS (pad); - - if (caps == NULL) { - g_warning ("gstvideo: failed to get caps of pad %s:%s", - GST_DEBUG_PAD_NAME (pad)); - return FALSE; - } - - structure = gst_caps_get_structure (caps, 0); - ret = gst_structure_get_int (structure, "width", width); - ret &= gst_structure_get_int (structure, "height", height); - - if (!ret) { - g_warning ("gstvideo: failed to get size properties on pad %s:%s", - GST_DEBUG_PAD_NAME (pad)); - return FALSE; - } - - GST_DEBUG ("size request on pad %s:%s: %dx%d", - GST_DEBUG_PAD_NAME (pad), width ? *width : -1, height ? *height : -1); - - return TRUE; -} - -/** - * 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; - - GValue display_ratio = { 0, }; - GValue tmp = { 0, }; - GValue tmp2 = { 0, }; - - g_return_val_if_fail (dar_n != NULL, FALSE); - g_return_val_if_fail (dar_d != NULL, FALSE); - - g_value_init (&display_ratio, GST_TYPE_FRACTION); - g_value_init (&tmp, GST_TYPE_FRACTION); - g_value_init (&tmp2, GST_TYPE_FRACTION); - - /* Calculate (video_width * video_par_n * display_par_d) / - * (video_height * video_par_d * display_par_n) */ - gst_value_set_fraction (&display_ratio, video_width, video_height); - gst_value_set_fraction (&tmp, video_par_n, video_par_d); - - if (!gst_value_fraction_multiply (&tmp2, &display_ratio, &tmp)) - goto error_overflow; - - gst_value_set_fraction (&tmp, display_par_d, display_par_n); - - if (!gst_value_fraction_multiply (&display_ratio, &tmp2, &tmp)) - goto error_overflow; - - num = gst_value_get_fraction_numerator (&display_ratio); - den = gst_value_get_fraction_denominator (&display_ratio); - - g_value_unset (&display_ratio); - g_value_unset (&tmp); - g_value_unset (&tmp2); - - g_return_val_if_fail (num > 0, FALSE); - g_return_val_if_fail (den > 0, FALSE); - - *dar_n = num; - *dar_d = den; - - return TRUE; -error_overflow: - g_value_unset (&display_ratio); - g_value_unset (&tmp); - g_value_unset (&tmp2); - return FALSE; -} - -/** - * gst_video_format_parse_caps_interlaced: - * @caps: the fixed #GstCaps to parse - * @interlaced: whether @caps represents interlaced video or not, may be NULL (output) - * - * Extracts whether the caps represents interlaced content or not and places it - * in @interlaced. - * - * Since: 0.10.23 - * - * Returns: TRUE if @caps was parsed correctly. - */ -gboolean -gst_video_format_parse_caps_interlaced (GstCaps * caps, gboolean * interlaced) -{ - GstStructure *structure; - - if (!gst_caps_is_fixed (caps)) - return FALSE; - - structure = gst_caps_get_structure (caps, 0); - - if (interlaced) { - if (!gst_structure_get_boolean (structure, "interlaced", interlaced)) - *interlaced = FALSE; - } - - return TRUE; -} - -/** - * gst_video_format_parse_caps: - * @caps: the #GstCaps to parse - * @format: the #GstVideoFormat of the video represented by @caps (output) - * @width: the width of the video represented by @caps, may be NULL (output) - * @height: the height of the video represented by @caps, may be NULL (output) - * - * Determines the #GstVideoFormat of @caps and places it in the location - * pointed to by @format. Extracts the size of the video and places it - * in the location pointed to by @width and @height. If @caps does not - * represent one of the raw video formats listed in #GstVideoFormat, the - * function will fail and return FALSE. - * - * Since: 0.10.16 - * - * Returns: TRUE if @caps was parsed correctly. - */ -gboolean -gst_video_format_parse_caps (GstCaps * caps, GstVideoFormat * format, - int *width, int *height) -{ - GstStructure *structure; - gboolean ok = TRUE; - - if (!gst_caps_is_fixed (caps)) - return FALSE; - - structure = gst_caps_get_structure (caps, 0); - - if (format) { - if (gst_structure_has_name (structure, "video/x-raw-yuv")) { - guint32 fourcc; - - ok &= gst_structure_get_fourcc (structure, "format", &fourcc); - - *format = gst_video_format_from_fourcc (fourcc); - if (*format == GST_VIDEO_FORMAT_UNKNOWN) { - ok = FALSE; - } - } else if (gst_structure_has_name (structure, "video/x-raw-rgb")) { - int depth; - int bpp; - int endianness; - int red_mask; - int green_mask; - int blue_mask; - int alpha_mask; - gboolean have_alpha; - - ok &= gst_structure_get_int (structure, "depth", &depth); - ok &= gst_structure_get_int (structure, "bpp", &bpp); - ok &= gst_structure_get_int (structure, "endianness", &endianness); - ok &= gst_structure_get_int (structure, "red_mask", &red_mask); - ok &= gst_structure_get_int (structure, "green_mask", &green_mask); - ok &= gst_structure_get_int (structure, "blue_mask", &blue_mask); - have_alpha = gst_structure_get_int (structure, "alpha_mask", &alpha_mask); - - if (depth == 24 && bpp == 32 && endianness == G_BIG_ENDIAN) { - *format = gst_video_format_from_rgb32_masks (red_mask, green_mask, - blue_mask); - if (*format == GST_VIDEO_FORMAT_UNKNOWN) { - ok = FALSE; - } - } else if (depth == 32 && bpp == 32 && endianness == G_BIG_ENDIAN && - have_alpha) { - *format = gst_video_format_from_rgba32_masks (red_mask, green_mask, - blue_mask, alpha_mask); - if (*format == GST_VIDEO_FORMAT_UNKNOWN) { - ok = FALSE; - } - } else if (depth == 24 && bpp == 24 && endianness == G_BIG_ENDIAN) { - *format = gst_video_format_from_rgb24_masks (red_mask, green_mask, - blue_mask); - if (*format == GST_VIDEO_FORMAT_UNKNOWN) { - ok = FALSE; - } - } else { - ok = FALSE; - } - } else { - ok = FALSE; - } - } - - if (width) { - ok &= gst_structure_get_int (structure, "width", width); - } - - if (height) { - ok &= gst_structure_get_int (structure, "height", height); - } - - return ok; -} - - -/** - * gst_video_parse_caps_framerate: - * @caps: pointer to a #GstCaps instance - * @fps_n: pointer to integer to hold numerator of frame rate (output) - * @fps_d: pointer to integer to hold denominator of frame rate (output) - * - * Extracts the frame rate from @caps and places the values in the locations - * pointed to by @fps_n and @fps_d. Returns TRUE if the values could be - * parsed correctly, FALSE if not. - * - * This function can be used with #GstCaps that have any media type; it - * is not limited to formats handled by #GstVideoFormat. - * - * Since: 0.10.16 - * - * Returns: TRUE if @caps was parsed correctly. - */ -gboolean -gst_video_parse_caps_framerate (GstCaps * caps, int *fps_n, int *fps_d) -{ - GstStructure *structure; - - if (!gst_caps_is_fixed (caps)) - return FALSE; - - structure = gst_caps_get_structure (caps, 0); - - return gst_structure_get_fraction (structure, "framerate", fps_n, fps_d); -} - -/** - * gst_video_parse_caps_pixel_aspect_ratio: - * @caps: pointer to a #GstCaps instance - * @par_n: pointer to numerator of pixel aspect ratio (output) - * @par_d: pointer to denominator of pixel aspect ratio (output) - * - * Extracts the pixel aspect ratio from @caps and places the values in - * the locations pointed to by @par_n and @par_d. Returns TRUE if the - * values could be parsed correctly, FALSE if not. - * - * This function can be used with #GstCaps that have any media type; it - * is not limited to formats handled by #GstVideoFormat. - * - * Since: 0.10.16 - * - * Returns: TRUE if @caps was parsed correctly. - */ -gboolean -gst_video_parse_caps_pixel_aspect_ratio (GstCaps * caps, int *par_n, int *par_d) -{ - GstStructure *structure; - - if (!gst_caps_is_fixed (caps)) - return FALSE; - - structure = gst_caps_get_structure (caps, 0); - - if (!gst_structure_get_fraction (structure, "pixel-aspect-ratio", - par_n, par_d)) { - *par_n = 1; - *par_d = 1; - } - return TRUE; -} - -/** - * gst_video_format_new_caps_interlaced: - * @format: the #GstVideoFormat describing the raw video format - * @width: width of video - * @height: height of video - * @framerate_n: numerator of frame rate - * @framerate_d: denominator of frame rate - * @par_n: numerator of pixel aspect ratio - * @par_d: denominator of pixel aspect ratio - * @interlaced: #TRUE if the format is interlaced - * - * Creates a new #GstCaps object based on the parameters provided. - * - * Since: 0.10.23 - * - * Returns: a new #GstCaps object, or NULL if there was an error - */ -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 *res; - - res = - gst_video_format_new_caps (format, width, height, framerate_n, - framerate_d, par_n, par_d); - if (interlaced && (res != NULL)) - gst_caps_set_simple (res, "interlaced", G_TYPE_BOOLEAN, TRUE, NULL); - - return res; -} - -/** - * gst_video_format_new_caps: - * @format: the #GstVideoFormat describing the raw video format - * @width: width of video - * @height: height of video - * @framerate_n: numerator of frame rate - * @framerate_d: denominator of frame rate - * @par_n: numerator of pixel aspect ratio - * @par_d: denominator of pixel aspect ratio - * - * Creates a new #GstCaps object based on the parameters provided. - * - * Since: 0.10.16 - * - * Returns: a new #GstCaps object, or NULL if there was an error - */ -GstCaps * -gst_video_format_new_caps (GstVideoFormat format, int width, int height, - int framerate_n, int framerate_d, int par_n, int par_d) -{ - g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, NULL); - g_return_val_if_fail (width > 0 && height > 0, NULL); - - if (gst_video_format_is_yuv (format)) { - return gst_caps_new_simple ("video/x-raw-yuv", - "format", GST_TYPE_FOURCC, gst_video_format_to_fourcc (format), - "width", G_TYPE_INT, width, - "height", G_TYPE_INT, height, - "framerate", GST_TYPE_FRACTION, framerate_n, framerate_d, - "pixel-aspect-ratio", GST_TYPE_FRACTION, par_n, par_d, NULL); - } - if (gst_video_format_is_rgb (format)) { - GstCaps *caps; - int red_mask; - int blue_mask; - int green_mask; - int alpha_mask; - int depth; - int bpp; - gboolean have_alpha; - unsigned int mask; - - switch (format) { - case GST_VIDEO_FORMAT_RGBx: - case GST_VIDEO_FORMAT_BGRx: - case GST_VIDEO_FORMAT_xRGB: - case GST_VIDEO_FORMAT_xBGR: - bpp = 32; - depth = 24; - have_alpha = FALSE; - break; - case GST_VIDEO_FORMAT_RGBA: - case GST_VIDEO_FORMAT_BGRA: - case GST_VIDEO_FORMAT_ARGB: - case GST_VIDEO_FORMAT_ABGR: - bpp = 32; - depth = 32; - have_alpha = TRUE; - break; - case GST_VIDEO_FORMAT_RGB: - case GST_VIDEO_FORMAT_BGR: - bpp = 24; - depth = 24; - have_alpha = FALSE; - break; - default: - return NULL; - } - if (bpp == 32) { - mask = 0xff000000; - } else { - mask = 0xff0000; - } - red_mask = - mask >> (8 * gst_video_format_get_component_offset (format, 0, width, - height)); - green_mask = - mask >> (8 * gst_video_format_get_component_offset (format, 1, width, - height)); - blue_mask = - mask >> (8 * gst_video_format_get_component_offset (format, 2, width, - height)); - - caps = gst_caps_new_simple ("video/x-raw-rgb", - "bpp", G_TYPE_INT, bpp, - "depth", G_TYPE_INT, depth, - "endianness", G_TYPE_INT, G_BIG_ENDIAN, - "red_mask", G_TYPE_INT, red_mask, - "green_mask", G_TYPE_INT, green_mask, - "blue_mask", G_TYPE_INT, blue_mask, - "width", G_TYPE_INT, width, - "height", G_TYPE_INT, height, - "framerate", GST_TYPE_FRACTION, framerate_n, framerate_d, - "pixel-aspect-ratio", GST_TYPE_FRACTION, par_n, par_d, NULL); - if (have_alpha) { - alpha_mask = - mask >> (8 * gst_video_format_get_component_offset (format, 3, width, - height)); - gst_caps_set_simple (caps, "alpha_mask", G_TYPE_INT, alpha_mask, NULL); - } - return caps; - } - return NULL; -} - -/** - * 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; - default: - 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); - - switch (format) { - case GST_VIDEO_FORMAT_I420: - return GST_MAKE_FOURCC ('I', '4', '2', '0'); - case GST_VIDEO_FORMAT_YV12: - return GST_MAKE_FOURCC ('Y', 'V', '1', '2'); - case GST_VIDEO_FORMAT_YUY2: - return GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'); - case GST_VIDEO_FORMAT_YVYU: - return GST_MAKE_FOURCC ('Y', 'V', 'Y', 'U'); - case GST_VIDEO_FORMAT_UYVY: - return GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'); - case GST_VIDEO_FORMAT_AYUV: - return GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'); - case GST_VIDEO_FORMAT_Y41B: - return GST_MAKE_FOURCC ('Y', '4', '1', 'B'); - case GST_VIDEO_FORMAT_Y42B: - return GST_MAKE_FOURCC ('Y', '4', '2', 'B'); - case GST_VIDEO_FORMAT_Y444: - return GST_MAKE_FOURCC ('Y', '4', '4', '4'); - case GST_VIDEO_FORMAT_v210: - return GST_MAKE_FOURCC ('v', '2', '1', '0'); - case GST_VIDEO_FORMAT_v216: - return GST_MAKE_FOURCC ('v', '2', '1', '6'); - case GST_VIDEO_FORMAT_NV12: - return GST_MAKE_FOURCC ('N', 'V', '1', '2'); - case GST_VIDEO_FORMAT_NV21: - return GST_MAKE_FOURCC ('N', 'V', '2', '1'); - default: - return 0; - } -} - -/* - * gst_video_format_from_rgb32_masks: - * @red_mask: red bit mask - * @green_mask: green bit mask - * @blue_mask: blue bit mask - * - * Converts red, green, blue bit masks into the corresponding - * #GstVideoFormat. - * - * Since: 0.10.16 - * - * Returns: the #GstVideoFormat corresponding to the bit masks - */ -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; -} - -/** - * gst_video_format_is_rgb: - * @format: a #GstVideoFormat - * - * Determine whether the video format is an RGB format. - * - * Since: 0.10.16 - * - * Returns: TRUE if @format represents RGB video - */ -gboolean -gst_video_format_is_rgb (GstVideoFormat format) -{ - switch (format) { - case GST_VIDEO_FORMAT_I420: - case GST_VIDEO_FORMAT_YV12: - case GST_VIDEO_FORMAT_YUY2: - case GST_VIDEO_FORMAT_YVYU: - case GST_VIDEO_FORMAT_UYVY: - case GST_VIDEO_FORMAT_AYUV: - case GST_VIDEO_FORMAT_Y41B: - case GST_VIDEO_FORMAT_Y42B: - case GST_VIDEO_FORMAT_Y444: - case GST_VIDEO_FORMAT_v210: - case GST_VIDEO_FORMAT_v216: - case GST_VIDEO_FORMAT_NV12: - case GST_VIDEO_FORMAT_NV21: - return FALSE; - case GST_VIDEO_FORMAT_RGBx: - case GST_VIDEO_FORMAT_BGRx: - case GST_VIDEO_FORMAT_xRGB: - case GST_VIDEO_FORMAT_xBGR: - case GST_VIDEO_FORMAT_RGBA: - case GST_VIDEO_FORMAT_BGRA: - case GST_VIDEO_FORMAT_ARGB: - case GST_VIDEO_FORMAT_ABGR: - case GST_VIDEO_FORMAT_RGB: - case GST_VIDEO_FORMAT_BGR: - return TRUE; - default: - return FALSE; - } -} - -/** - * gst_video_format_is_yuv: - * @format: a #GstVideoFormat - * - * Determine whether the video format is a YUV format. - * - * Since: 0.10.16 - * - * Returns: TRUE if @format represents YUV video - */ -gboolean -gst_video_format_is_yuv (GstVideoFormat format) -{ - switch (format) { - case GST_VIDEO_FORMAT_I420: - case GST_VIDEO_FORMAT_YV12: - case GST_VIDEO_FORMAT_YUY2: - case GST_VIDEO_FORMAT_YVYU: - case GST_VIDEO_FORMAT_UYVY: - case GST_VIDEO_FORMAT_AYUV: - case GST_VIDEO_FORMAT_Y41B: - case GST_VIDEO_FORMAT_Y42B: - case GST_VIDEO_FORMAT_Y444: - case GST_VIDEO_FORMAT_v210: - case GST_VIDEO_FORMAT_v216: - case GST_VIDEO_FORMAT_NV12: - case GST_VIDEO_FORMAT_NV21: - return TRUE; - case GST_VIDEO_FORMAT_RGBx: - case GST_VIDEO_FORMAT_BGRx: - case GST_VIDEO_FORMAT_xRGB: - case GST_VIDEO_FORMAT_xBGR: - case GST_VIDEO_FORMAT_RGBA: - case GST_VIDEO_FORMAT_BGRA: - case GST_VIDEO_FORMAT_ARGB: - case GST_VIDEO_FORMAT_ABGR: - case GST_VIDEO_FORMAT_RGB: - case GST_VIDEO_FORMAT_BGR: - return FALSE; - default: - return FALSE; - } -} - -/** - * gst_video_format_has_alpha: - * @format: a #GstVideoFormat - * - * Returns TRUE or FALSE depending on if the video format provides an - * alpha channel. - * - * Since: 0.10.16 - * - * Returns: TRUE if @format has an alpha channel - */ -gboolean -gst_video_format_has_alpha (GstVideoFormat format) -{ - switch (format) { - case GST_VIDEO_FORMAT_I420: - case GST_VIDEO_FORMAT_YV12: - case GST_VIDEO_FORMAT_YUY2: - case GST_VIDEO_FORMAT_YVYU: - case GST_VIDEO_FORMAT_UYVY: - case GST_VIDEO_FORMAT_Y41B: - case GST_VIDEO_FORMAT_Y42B: - case GST_VIDEO_FORMAT_Y444: - case GST_VIDEO_FORMAT_v210: - case GST_VIDEO_FORMAT_v216: - case GST_VIDEO_FORMAT_NV12: - case GST_VIDEO_FORMAT_NV21: - return FALSE; - case GST_VIDEO_FORMAT_AYUV: - case GST_VIDEO_FORMAT_RGBA: - case GST_VIDEO_FORMAT_BGRA: - case GST_VIDEO_FORMAT_ARGB: - case GST_VIDEO_FORMAT_ABGR: - return TRUE; - case GST_VIDEO_FORMAT_RGBx: - case GST_VIDEO_FORMAT_BGRx: - case GST_VIDEO_FORMAT_xRGB: - case GST_VIDEO_FORMAT_xBGR: - case GST_VIDEO_FORMAT_RGB: - case GST_VIDEO_FORMAT_BGR: - return FALSE; - default: - return FALSE; - } -} - -/** - * gst_video_format_get_row_stride: - * @format: a #GstVideoFormat - * @component: the component index - * @width: the width of video - * - * Calculates the row stride (number of bytes from one row of pixels to - * the next) for the video component with an index of @component. For - * YUV video, Y, U, and V have component indices of 0, 1, and 2, - * respectively. For RGB video, R, G, and B have component indicies of - * 0, 1, and 2, respectively. Alpha channels, if present, have a component - * index of 3. The @width parameter always represents the width of the - * video, not the component. - * - * Since: 0.10.16 - * - * Returns: row stride of component @component - */ -int -gst_video_format_get_row_stride (GstVideoFormat format, int component, - int width) -{ - g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0); - g_return_val_if_fail (component >= 0 && component <= 3, 0); - g_return_val_if_fail (width > 0, 0); - - switch (format) { - case GST_VIDEO_FORMAT_I420: - case GST_VIDEO_FORMAT_YV12: - if (component == 0) { - return GST_ROUND_UP_4 (width); - } else { - return GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2); - } - case GST_VIDEO_FORMAT_YUY2: - case GST_VIDEO_FORMAT_YVYU: - case GST_VIDEO_FORMAT_UYVY: - return GST_ROUND_UP_4 (width * 2); - case GST_VIDEO_FORMAT_AYUV: - case GST_VIDEO_FORMAT_RGBx: - case GST_VIDEO_FORMAT_BGRx: - case GST_VIDEO_FORMAT_xRGB: - case GST_VIDEO_FORMAT_xBGR: - case GST_VIDEO_FORMAT_RGBA: - case GST_VIDEO_FORMAT_BGRA: - case GST_VIDEO_FORMAT_ARGB: - case GST_VIDEO_FORMAT_ABGR: - return width * 4; - case GST_VIDEO_FORMAT_RGB: - case GST_VIDEO_FORMAT_BGR: - return GST_ROUND_UP_4 (width * 3); - case GST_VIDEO_FORMAT_Y41B: - if (component == 0) { - return GST_ROUND_UP_4 (width); - } else { - return GST_ROUND_UP_16 (width) / 4; - } - case GST_VIDEO_FORMAT_Y42B: - if (component == 0) { - return GST_ROUND_UP_4 (width); - } else { - return GST_ROUND_UP_8 (width) / 2; - } - case GST_VIDEO_FORMAT_Y444: - return GST_ROUND_UP_4 (width); - case GST_VIDEO_FORMAT_v210: - return ((width + 47) / 48) * 128; - case GST_VIDEO_FORMAT_v216: - return GST_ROUND_UP_8 (width * 4); - case GST_VIDEO_FORMAT_NV12: - case GST_VIDEO_FORMAT_NV21: - return GST_ROUND_UP_4 (width); - default: - return 0; - } -} - -/** - * gst_video_format_get_pixel_stride: - * @format: a #GstVideoFormat - * @component: the component index - * - * Calculates the pixel stride (number of bytes from one pixel to the - * pixel to its immediate left) for the video component with an index - * of @component. See @gst_video_format_get_row_stride for a description - * of the component index. - * - * Since: 0.10.16 - * - * Returns: pixel stride of component @component - */ -int -gst_video_format_get_pixel_stride (GstVideoFormat format, int component) -{ - g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0); - g_return_val_if_fail (component >= 0 && component <= 3, 0); - - switch (format) { - case GST_VIDEO_FORMAT_I420: - case GST_VIDEO_FORMAT_YV12: - case GST_VIDEO_FORMAT_Y41B: - case GST_VIDEO_FORMAT_Y42B: - case GST_VIDEO_FORMAT_Y444: - return 1; - case GST_VIDEO_FORMAT_YUY2: - case GST_VIDEO_FORMAT_YVYU: - case GST_VIDEO_FORMAT_UYVY: - if (component == 0) { - return 2; - } else { - return 4; - } - case GST_VIDEO_FORMAT_AYUV: - case GST_VIDEO_FORMAT_RGBx: - case GST_VIDEO_FORMAT_BGRx: - case GST_VIDEO_FORMAT_xRGB: - case GST_VIDEO_FORMAT_xBGR: - case GST_VIDEO_FORMAT_RGBA: - case GST_VIDEO_FORMAT_BGRA: - case GST_VIDEO_FORMAT_ARGB: - case GST_VIDEO_FORMAT_ABGR: - return 4; - case GST_VIDEO_FORMAT_RGB: - case GST_VIDEO_FORMAT_BGR: - return 3; - case GST_VIDEO_FORMAT_v210: - /* v210 is packed at the bit level, so pixel stride doesn't make sense */ - return 0; - case GST_VIDEO_FORMAT_v216: - if (component == 0) { - return 4; - } else { - return 8; - } - case GST_VIDEO_FORMAT_NV12: - case GST_VIDEO_FORMAT_NV21: - if (component == 0) { - return 1; - } else { - return 2; - } - default: - return 0; - } -} - -/** - * gst_video_format_get_component_width: - * @format: a #GstVideoFormat - * @component: the component index - * @width: the width of video - * - * Calculates the width of the component. See - * @gst_video_format_get_row_stride for a description - * of the component index. - * - * Since: 0.10.16 - * - * Returns: width of component @component - */ -int -gst_video_format_get_component_width (GstVideoFormat format, int component, - int width) -{ - g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0); - g_return_val_if_fail (component >= 0 && component <= 3, 0); - g_return_val_if_fail (width > 0, 0); - - switch (format) { - case GST_VIDEO_FORMAT_I420: - case GST_VIDEO_FORMAT_YV12: - case GST_VIDEO_FORMAT_YUY2: - case GST_VIDEO_FORMAT_YVYU: - case GST_VIDEO_FORMAT_UYVY: - case GST_VIDEO_FORMAT_Y42B: - case GST_VIDEO_FORMAT_v210: - case GST_VIDEO_FORMAT_v216: - if (component == 0) { - return width; - } else { - return GST_ROUND_UP_2 (width) / 2; - } - case GST_VIDEO_FORMAT_Y41B: - if (component == 0) { - return width; - } else { - return GST_ROUND_UP_4 (width) / 4; - } - case GST_VIDEO_FORMAT_AYUV: - case GST_VIDEO_FORMAT_RGBx: - case GST_VIDEO_FORMAT_BGRx: - case GST_VIDEO_FORMAT_xRGB: - case GST_VIDEO_FORMAT_xBGR: - case GST_VIDEO_FORMAT_RGBA: - case GST_VIDEO_FORMAT_BGRA: - case GST_VIDEO_FORMAT_ARGB: - case GST_VIDEO_FORMAT_ABGR: - case GST_VIDEO_FORMAT_RGB: - case GST_VIDEO_FORMAT_BGR: - case GST_VIDEO_FORMAT_Y444: - case GST_VIDEO_FORMAT_NV12: - case GST_VIDEO_FORMAT_NV21: - return width; - default: - return 0; - } -} - -/** - * gst_video_format_get_component_height: - * @format: a #GstVideoFormat - * @component: the component index - * @height: the height of video - * - * Calculates the height of the component. See - * @gst_video_format_get_row_stride for a description - * of the component index. - * - * Since: 0.10.16 - * - * Returns: height of component @component - */ -int -gst_video_format_get_component_height (GstVideoFormat format, int component, - int height) -{ - g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0); - g_return_val_if_fail (component >= 0 && component <= 3, 0); - g_return_val_if_fail (height > 0, 0); - - switch (format) { - case GST_VIDEO_FORMAT_I420: - case GST_VIDEO_FORMAT_YV12: - case GST_VIDEO_FORMAT_NV12: - case GST_VIDEO_FORMAT_NV21: - if (component == 0) { - return height; - } else { - return GST_ROUND_UP_2 (height) / 2; - } - case GST_VIDEO_FORMAT_Y41B: - case GST_VIDEO_FORMAT_Y42B: - case GST_VIDEO_FORMAT_YUY2: - case GST_VIDEO_FORMAT_YVYU: - case GST_VIDEO_FORMAT_UYVY: - case GST_VIDEO_FORMAT_AYUV: - case GST_VIDEO_FORMAT_RGBx: - case GST_VIDEO_FORMAT_BGRx: - case GST_VIDEO_FORMAT_xRGB: - case GST_VIDEO_FORMAT_xBGR: - case GST_VIDEO_FORMAT_RGBA: - case GST_VIDEO_FORMAT_BGRA: - case GST_VIDEO_FORMAT_ARGB: - case GST_VIDEO_FORMAT_ABGR: - case GST_VIDEO_FORMAT_RGB: - case GST_VIDEO_FORMAT_BGR: - case GST_VIDEO_FORMAT_Y444: - case GST_VIDEO_FORMAT_v210: - case GST_VIDEO_FORMAT_v216: - return height; - default: - return 0; - } -} - -/** - * gst_video_format_get_component_offset: - * @format: a #GstVideoFormat - * @component: the component index - * @width: the width of video - * @height: the height of video - * - * Calculates the offset (in bytes) of the first pixel of the component - * with index @component. For packed formats, this will typically be a - * small integer (0, 1, 2, 3). For planar formats, this will be a - * (relatively) large offset to the beginning of the second or third - * component planes. See @gst_video_format_get_row_stride for a description - * of the component index. - * - * Since: 0.10.16 - * - * Returns: offset of component @component - */ -int -gst_video_format_get_component_offset (GstVideoFormat format, int component, - int width, int height) -{ - g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0); - g_return_val_if_fail (component >= 0 && component <= 3, 0); - g_return_val_if_fail (width > 0 && height > 0, 0); - - switch (format) { - case GST_VIDEO_FORMAT_I420: - if (component == 0) - return 0; - if (component == 1) - return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height); - if (component == 2) { - return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height) + - GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2) * - (GST_ROUND_UP_2 (height) / 2); - } - return 0; - case GST_VIDEO_FORMAT_YV12: /* same as I420, but components 1+2 swapped */ - if (component == 0) - return 0; - if (component == 2) - return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height); - if (component == 1) { - return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height) + - GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2) * - (GST_ROUND_UP_2 (height) / 2); - } - return 0; - case GST_VIDEO_FORMAT_YUY2: - if (component == 0) - return 0; - if (component == 1) - return 1; - if (component == 2) - return 3; - return 0; - case GST_VIDEO_FORMAT_YVYU: - if (component == 0) - return 0; - if (component == 1) - return 3; - if (component == 2) - return 1; - return 0; - case GST_VIDEO_FORMAT_UYVY: - if (component == 0) - return 1; - if (component == 1) - return 0; - if (component == 2) - return 2; - return 0; - case GST_VIDEO_FORMAT_AYUV: - if (component == 0) - return 1; - if (component == 1) - return 2; - if (component == 2) - return 3; - if (component == 3) - return 0; - return 0; - case GST_VIDEO_FORMAT_RGBx: - case GST_VIDEO_FORMAT_RGBA: - if (component == 0) - return 0; - if (component == 1) - return 1; - if (component == 2) - return 2; - if (component == 3) - return 3; - return 0; - case GST_VIDEO_FORMAT_BGRx: - case GST_VIDEO_FORMAT_BGRA: - if (component == 0) - return 2; - if (component == 1) - return 1; - if (component == 2) - return 0; - if (component == 3) - return 3; - return 0; - case GST_VIDEO_FORMAT_xRGB: - case GST_VIDEO_FORMAT_ARGB: - if (component == 0) - return 1; - if (component == 1) - return 2; - if (component == 2) - return 3; - if (component == 3) - return 0; - return 0; - case GST_VIDEO_FORMAT_xBGR: - case GST_VIDEO_FORMAT_ABGR: - if (component == 0) - return 3; - if (component == 1) - return 2; - if (component == 2) - return 1; - if (component == 3) - return 0; - return 0; - case GST_VIDEO_FORMAT_RGB: - if (component == 0) - return 0; - if (component == 1) - return 1; - if (component == 2) - return 2; - return 0; - case GST_VIDEO_FORMAT_BGR: - if (component == 0) - return 2; - if (component == 1) - return 1; - if (component == 2) - return 0; - return 0; - case GST_VIDEO_FORMAT_Y41B: - if (component == 0) - return 0; - if (component == 1) - return GST_ROUND_UP_4 (width) * height; - if (component == 2) - return (GST_ROUND_UP_4 (width) + - (GST_ROUND_UP_16 (width) / 4)) * height; - return 0; - case GST_VIDEO_FORMAT_Y42B: - if (component == 0) - return 0; - if (component == 1) - return GST_ROUND_UP_4 (width) * height; - if (component == 2) - return (GST_ROUND_UP_4 (width) + (GST_ROUND_UP_8 (width) / 2)) * height; - return 0; - case GST_VIDEO_FORMAT_Y444: - return GST_ROUND_UP_4 (width) * height * component; - case GST_VIDEO_FORMAT_v210: - /* v210 is bit-packed, so this doesn't make sense */ - return 0; - case GST_VIDEO_FORMAT_v216: - if (component == 0) - return 0; - if (component == 1) - return 2; - if (component == 2) - return 6; - return 0; - case GST_VIDEO_FORMAT_NV12: - if (component == 0) - return 0; - if (component == 1) - return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height); - if (component == 2) - return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height) + 1; - case GST_VIDEO_FORMAT_NV21: - if (component == 0) - return 0; - if (component == 1) - return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height) + 1; - if (component == 2) - return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height); - default: - return 0; - } -} - -/** - * gst_video_format_get_size: - * @format: a #GstVideoFormat - * @width: the width of video - * @height: the height of video - * - * Calculates the total number of bytes in the raw video format. This - * number should be used when allocating a buffer for raw video. - * - * Since: 0.10.16 - * - * Returns: size (in bytes) of raw video format - */ -int -gst_video_format_get_size (GstVideoFormat format, int width, int height) -{ - int size; - - g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0); - g_return_val_if_fail (width > 0 && height > 0, 0); - - switch (format) { - case GST_VIDEO_FORMAT_I420: - case GST_VIDEO_FORMAT_YV12: - size = GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height); - size += GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2) * - (GST_ROUND_UP_2 (height) / 2) * 2; - return size; - case GST_VIDEO_FORMAT_YUY2: - case GST_VIDEO_FORMAT_YVYU: - case GST_VIDEO_FORMAT_UYVY: - return GST_ROUND_UP_4 (width * 2) * height; - case GST_VIDEO_FORMAT_AYUV: - case GST_VIDEO_FORMAT_RGBx: - case GST_VIDEO_FORMAT_BGRx: - case GST_VIDEO_FORMAT_xRGB: - case GST_VIDEO_FORMAT_xBGR: - case GST_VIDEO_FORMAT_RGBA: - case GST_VIDEO_FORMAT_BGRA: - case GST_VIDEO_FORMAT_ARGB: - case GST_VIDEO_FORMAT_ABGR: - return width * 4 * height; - case GST_VIDEO_FORMAT_RGB: - case GST_VIDEO_FORMAT_BGR: - return GST_ROUND_UP_4 (width * 3) * height; - case GST_VIDEO_FORMAT_Y41B: - /* simplification of ROUNDUP4(w)*h + 2*((ROUNDUP8(w)/4)*h */ - return (GST_ROUND_UP_4 (width) + (GST_ROUND_UP_16 (width) / 2)) * height; - case GST_VIDEO_FORMAT_Y42B: - /* simplification of ROUNDUP4(w)*h + 2*(ROUNDUP8(w)/2)*h: */ - return (GST_ROUND_UP_4 (width) + GST_ROUND_UP_8 (width)) * height; - case GST_VIDEO_FORMAT_Y444: - return GST_ROUND_UP_4 (width) * height * 3; - case GST_VIDEO_FORMAT_v210: - return ((width + 47) / 48) * 128 * height; - case GST_VIDEO_FORMAT_v216: - return GST_ROUND_UP_8 (width * 4) * height; - case GST_VIDEO_FORMAT_NV12: - case GST_VIDEO_FORMAT_NV21: - return GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height) * 3 / 2; - default: - return 0; - } -} - -/** - * gst_video_format_convert: - * @format: a #GstVideoFormat - * @width: the width of video - * @height: the height of video - * @fps_n: frame rate numerator - * @fps_d: frame rate denominator - * @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 to handle pad queries of the type GST_QUERY_CONVERT. - * - * Since: 0.10.16 - * - * Returns: TRUE if the conversion was successful. - */ -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) -{ - gboolean ret = FALSE; - int size; - - g_return_val_if_fail (format != GST_VIDEO_FORMAT_UNKNOWN, 0); - g_return_val_if_fail (width > 0 && height > 0, 0); - - size = gst_video_format_get_size (format, width, height); - - 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; -} |