/* 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 * 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 #include "video.h" #include "gstmetavideo.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 * * * * This library contains some helper functions and includes the * videosink and videofilter base classes. * * */ /** * 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->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); } 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; gboolean interlaced; 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)) { info->fps_n = fps_n; info->fps_d = fps_d; } else { info->fps_n = 0; info->fps_d = 1; } if (!gst_structure_get_boolean (structure, "interlaced", &interlaced)) interlaced = FALSE; if (interlaced) info->flags |= GST_VIDEO_FLAG_INTERLACED; else info->flags &= ~GST_VIDEO_FLAG_INTERLACED; 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); if ((s = gst_structure_get_string (structure, "colorimetry"))) gst_video_colorimetry_from_string (&info->colorimetry, s); 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, expected video/x-raw"); return FALSE; } no_format: { GST_ERROR ("no format given"); return FALSE; } unknown_format: { GST_ERROR ("unknown format given"); 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, "framerate", GST_TYPE_FRACTION, info->fps_n, info->fps_d, "pixel-aspect-ratio", GST_TYPE_FRACTION, info->par_n, info->par_d, NULL); if (info->flags & GST_VIDEO_FLAG_INTERLACED) gst_caps_set_simple (caps, "interlaced", G_TYPE_BOOLEAN, TRUE, 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); 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 GstMetaVideo 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) { GstMetaVideo *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_meta_video (buffer); else meta = gst_buffer_get_meta_video_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_meta_video_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 GstMetaVideo for id", 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; GstMetaVideo *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_meta_video_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: 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_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[2] = info->stride[0] * GST_ROUND_UP_2 (height); info->offset[1] = info->offset[2] + info->stride[1] * (GST_ROUND_UP_2 (height) / 2); info->size = info->offset[1] + 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: 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_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[2] = info->stride[0] * height; info->offset[1] = info->offset[2] + 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; }