From 1c3e012fc3e4b9aba19d44855bf8c8bf6ec44cd5 Mon Sep 17 00:00:00 2001 From: David Schleef Date: Tue, 18 Dec 2007 00:13:26 +0000 Subject: [PATCH] Add new GstVideFormat enum and write a bunch of helper functions based around it. Original commit message from CVS: * docs/libs/gst-plugins-base-libs-sections.txt: * gst-libs/gst/video/video.c: * gst-libs/gst/video/video.h: Add new GstVideFormat enum and write a bunch of helper functions based around it. --- ChangeLog | 8 + docs/libs/gst-plugins-base-libs-sections.txt | 18 + gst-libs/gst/video/video.c | 819 +++++++++++++++++++ gst-libs/gst/video/video.h | 44 + 4 files changed, 889 insertions(+) diff --git a/ChangeLog b/ChangeLog index 8d181e6cb5..07a01534b9 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,11 @@ +2007-12-17 David Schleef + + * docs/libs/gst-plugins-base-libs-sections.txt: + * gst-libs/gst/video/video.c: + * gst-libs/gst/video/video.h: + Add new GstVideFormat enum and write a bunch of helper functions + based around it. + 2007-12-17 Tim-Philipp Müller * Makefile.am: diff --git a/docs/libs/gst-plugins-base-libs-sections.txt b/docs/libs/gst-plugins-base-libs-sections.txt index d4d9b1e3c1..d00c744036 100644 --- a/docs/libs/gst-plugins-base-libs-sections.txt +++ b/docs/libs/gst-plugins-base-libs-sections.txt @@ -1461,9 +1461,27 @@ GST_VIDEO_RED_MASK_15_INT GST_VIDEO_RED_MASK_16 GST_VIDEO_RED_MASK_16_INT GST_VIDEO_SIZE_RANGE +GstVideoFormat gst_video_calculate_display_ratio gst_video_frame_rate gst_video_get_size +gst_video_format_convert +gst_video_format_new_caps +gst_video_format_get_component_height +gst_video_format_get_component_offset +gst_video_format_get_component_width +gst_video_format_get_pixel_stride +gst_video_format_get_row_stride +gst_video_format_get_size +gst_video_format_has_alpha +gst_video_format_is_rgb +gst_video_format_is_yuv +gst_video_format_to_fourcc +gst_video_format_from_fourcc +gst_video_format_parse_caps +gst_video_format_from_rgb32_masks +gst_video_parse_caps_framerate +gst_video_parse_caps_pixel_aspect_ratio
diff --git a/gst-libs/gst/video/video.c b/gst-libs/gst/video/video.c index 1273efd9e5..443bbd424d 100644 --- a/gst-libs/gst/video/video.c +++ b/gst-libs/gst/video/video.c @@ -1,6 +1,7 @@ /* GStreamer * Copyright (C) <1999> Erik Walthinsen * Library <2002> Ronald Bultje + * Copyright (C) 2007 David A. Schleef * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public @@ -183,3 +184,821 @@ error_overflow: g_value_unset (&tmp2); return FALSE; } + +/** + * 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 (output) + * @height: the height of the video represented by @caps (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 + * reprsent 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; + + 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); + + if (depth != 24 || bpp != 32 || endianness != G_BIG_ENDIAN) { + ok = FALSE; + } else { + *format = gst_video_format_from_rgb32_masks (red_mask, green_mask, + blue_mask); + if (*format == GST_VIDEO_FORMAT_UNKNOWN) { + 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: + * @fps_n: pointer to numerator of frame rate (output) + * @fps_d: pointer to 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: + * @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: + * @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) +{ + 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)) { + int red_mask; + int blue_mask; + int green_mask; + + red_mask = + 0xff000000U >> gst_video_format_get_component_offset (format, 0, width, + height); + green_mask = + 0xff000000U >> gst_video_format_get_component_offset (format, 1, width, + height); + blue_mask = + 0xff000000U >> gst_video_format_get_component_offset (format, 2, width, + height); + + return gst_caps_new_simple ("video/x-raw-rgb", + "bpp", G_TYPE_INT, 32, + "depth", G_TYPE_INT, 24, + "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); + } + 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 ('U', 'Y', 'V', 'Y'): + return GST_VIDEO_FORMAT_UYVY; + case GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'): + return GST_VIDEO_FORMAT_AYUV; + 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) +{ + 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_UYVY: + return GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'); + case GST_VIDEO_FORMAT_AYUV: + return GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'); + 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 + */ +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; +} + +/** + * gst_video_format_is_rgb: + * @format: a #GstVideoFormat + * + * 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_UYVY: + case GST_VIDEO_FORMAT_AYUV: + return FALSE; + case GST_VIDEO_FORMAT_RGBx: + case GST_VIDEO_FORMAT_BGRx: + case GST_VIDEO_FORMAT_xRGB: + case GST_VIDEO_FORMAT_xBGR: + return TRUE; + default: + return FALSE; + } +} + +/** + * gst_video_format_is_yuv: + * @format: a #GstVideoFormat + * + * 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_UYVY: + case GST_VIDEO_FORMAT_AYUV: + return TRUE; + case GST_VIDEO_FORMAT_RGBx: + case GST_VIDEO_FORMAT_BGRx: + case GST_VIDEO_FORMAT_xRGB: + case GST_VIDEO_FORMAT_xBGR: + return FALSE; + default: + return FALSE; + } +} + +/** + * gst_video_format_has_alpha: + * @format: a #GstVideoFormat + * + * 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_UYVY: + return FALSE; + case GST_VIDEO_FORMAT_AYUV: + return TRUE; + case GST_VIDEO_FORMAT_RGBx: + case GST_VIDEO_FORMAT_BGRx: + case GST_VIDEO_FORMAT_xRGB: + case GST_VIDEO_FORMAT_xBGR: + 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) +{ + 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_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: + return width * 4; + 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) +{ + switch (format) { + case GST_VIDEO_FORMAT_I420: + case GST_VIDEO_FORMAT_YV12: + return 1; + case GST_VIDEO_FORMAT_YUY2: + 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: + return 4; + 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) +{ + switch (format) { + case GST_VIDEO_FORMAT_I420: + case GST_VIDEO_FORMAT_YV12: + case GST_VIDEO_FORMAT_YUY2: + case GST_VIDEO_FORMAT_UYVY: + if (component == 0) { + return width; + } else { + return GST_ROUND_UP_2 (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: + 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) +{ + switch (format) { + case GST_VIDEO_FORMAT_I420: + case GST_VIDEO_FORMAT_YV12: + if (component == 0) { + return height; + } else { + return GST_ROUND_UP_2 (height) / 2; + } + case GST_VIDEO_FORMAT_YUY2: + 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: + 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) +{ + switch (format) { + case GST_VIDEO_FORMAT_I420: + case GST_VIDEO_FORMAT_YV12: + if (component == 0) { + return 0; + } else { + int offset; + + offset = GST_ROUND_UP_4 (width) * GST_ROUND_UP_2 (height); + if (component == 2) { + offset += GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2) * + (GST_ROUND_UP_2 (height) / 2); + } + return offset; + } + 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_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: + 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: + 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: + 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: + if (component == 0) + return 3; + if (component == 1) + return 2; + if (component == 2) + return 1; + if (component == 3) + return 0; + return 0; + 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; + + 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_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: + return width * 4 * height; + 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; + + 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; +} diff --git a/gst-libs/gst/video/video.h b/gst-libs/gst/video/video.h index a839da6a24..af1107bf74 100644 --- a/gst-libs/gst/video/video.h +++ b/gst-libs/gst/video/video.h @@ -25,6 +25,19 @@ G_BEGIN_DECLS +typedef enum { + GST_VIDEO_FORMAT_UNKNOWN, + GST_VIDEO_FORMAT_I420, + GST_VIDEO_FORMAT_YV12, + GST_VIDEO_FORMAT_YUY2, + GST_VIDEO_FORMAT_UYVY, + GST_VIDEO_FORMAT_AYUV, + GST_VIDEO_FORMAT_RGBx, + GST_VIDEO_FORMAT_BGRx, + GST_VIDEO_FORMAT_xRGB, + GST_VIDEO_FORMAT_xBGR +} GstVideoFormat; + #define GST_VIDEO_BYTE1_MASK_32 "0xFF000000" #define GST_VIDEO_BYTE2_MASK_32 "0x00FF0000" #define GST_VIDEO_BYTE3_MASK_32 "0x0000FF00" @@ -194,6 +207,37 @@ gboolean gst_video_calculate_display_ratio (guint *dar_n, guint *dar_d, guint video_par_n, guint video_par_d, guint display_par_n, guint display_par_d); +gboolean gst_video_format_parse_caps (GstCaps *caps, GstVideoFormat *format, + int *width, int *height); +gboolean gst_video_parse_caps_framerate (GstCaps *caps, + int *fps_n, int *fps_d); +gboolean gst_video_parse_caps_pixel_aspect_ratio (GstCaps *caps, + int *par_n, int *par_d); +GstCaps * gst_video_format_new_caps (GstVideoFormat format, + int width, int height, int framerate_n, int framerate_d, + int par_n, int par_d); +GstVideoFormat gst_video_format_from_fourcc (guint32 fourcc); +guint32 gst_video_format_to_fourcc (GstVideoFormat format); +GstVideoFormat gst_video_format_from_rgb32_masks (int red_mask, int green_mask, int blue_mask); +gboolean gst_video_format_is_rgb (GstVideoFormat format); +gboolean gst_video_format_is_yuv (GstVideoFormat format); +gboolean gst_video_format_has_alpha (GstVideoFormat format); +int gst_video_format_get_row_stride (GstVideoFormat format, int component, + int width); +int gst_video_format_get_pixel_stride (GstVideoFormat format, int component); +int gst_video_format_get_component_width (GstVideoFormat format, int component, + int width); +int gst_video_format_get_component_height (GstVideoFormat format, int component, + int height); +int gst_video_format_get_component_offset (GstVideoFormat format, int component, + int width, int height); +int gst_video_format_get_size (GstVideoFormat format, int width, int height); +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); + + G_END_DECLS #endif /* __GST_VIDEO_H__ */