2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
4 * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
5 * Copyright (C) 2010 David Schleef <ds@schleef.org>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
24 * SECTION:element-colorspace
26 * Convert video frames between a great variety of colorspace formats.
29 * <title>Example launch line</title>
31 * gst-launch -v videotestsrc ! video/x-raw-yuv,format=\(fourcc\)YUY2 ! colorspace ! ximagesink
40 #include "gstcolorspace.h"
41 #include <gst/video/video.h>
45 GST_DEBUG_CATEGORY (colorspace_debug);
46 #define GST_CAT_DEFAULT colorspace_debug
47 GST_DEBUG_CATEGORY (colorspace_performance);
55 #define CSP_VIDEO_CAPS \
56 "video/x-raw-yuv, width = "GST_VIDEO_SIZE_RANGE" , " \
57 "height="GST_VIDEO_SIZE_RANGE",framerate="GST_VIDEO_FPS_RANGE"," \
58 "format= (fourcc) { I420 , NV12 , NV21 , YV12 , YUY2 , Y42B , Y444 , YUV9 , YVU9 , Y41B , Y800 , Y8 , GREY , Y16 , UYVY , YVYU , IYU1 , v308 , AYUV, v210, v216, A420, AY64 } ;" \
59 GST_VIDEO_CAPS_RGB";" \
60 GST_VIDEO_CAPS_BGR";" \
61 GST_VIDEO_CAPS_RGBx";" \
62 GST_VIDEO_CAPS_xRGB";" \
63 GST_VIDEO_CAPS_BGRx";" \
64 GST_VIDEO_CAPS_xBGR";" \
65 GST_VIDEO_CAPS_RGBA";" \
66 GST_VIDEO_CAPS_ARGB";" \
67 GST_VIDEO_CAPS_BGRA";" \
68 GST_VIDEO_CAPS_ABGR";" \
69 GST_VIDEO_CAPS_RGB_16";" \
70 GST_VIDEO_CAPS_BGR_16";" \
71 GST_VIDEO_CAPS_RGB_15";" \
72 GST_VIDEO_CAPS_BGR_15";" \
73 GST_VIDEO_CAPS_RGB8_PALETTED "; " \
74 GST_VIDEO_CAPS_GRAY8";" \
75 GST_VIDEO_CAPS_GRAY16("BIG_ENDIAN")";" \
76 GST_VIDEO_CAPS_GRAY16("LITTLE_ENDIAN")";" \
77 GST_VIDEO_CAPS_r210";" \
78 GST_VIDEO_CAPS_ARGB_64
80 static GstStaticPadTemplate gst_csp_src_template =
81 GST_STATIC_PAD_TEMPLATE ("src",
84 GST_STATIC_CAPS (CSP_VIDEO_CAPS)
87 static GstStaticPadTemplate gst_csp_sink_template =
88 GST_STATIC_PAD_TEMPLATE ("sink",
91 GST_STATIC_CAPS (CSP_VIDEO_CAPS)
94 GType gst_csp_get_type (void);
96 static void gst_csp_set_property (GObject * object,
97 guint property_id, const GValue * value, GParamSpec * pspec);
98 static void gst_csp_get_property (GObject * object,
99 guint property_id, GValue * value, GParamSpec * pspec);
101 static gboolean gst_csp_set_caps (GstBaseTransform * btrans,
102 GstCaps * incaps, GstCaps * outcaps);
103 static gboolean gst_csp_get_unit_size (GstBaseTransform * btrans,
104 GstCaps * caps, gsize * size);
105 static GstFlowReturn gst_csp_transform (GstBaseTransform * btrans,
106 GstBuffer * inbuf, GstBuffer * outbuf);
108 static GQuark _QRAWRGB; /* "video/x-raw-rgb" */
109 static GQuark _QRAWYUV; /* "video/x-raw-yuv" */
110 static GQuark _QALPHAMASK; /* "alpha_mask" */
114 dither_method_get_type (void)
116 static GType gtype = 0;
119 static const GEnumValue values[] = {
120 {DITHER_NONE, "No dithering (default)", "none"},
121 {DITHER_VERTERR, "Vertical error propogation", "verterr"},
122 {DITHER_HALFTONE, "Half-tone", "halftone"},
126 gtype = g_enum_register_static ("GstColorspaceDitherMethod", values);
131 /* copies the given caps */
133 gst_csp_caps_remove_format_info (GstCaps * caps)
135 GstStructure *yuvst, *rgbst, *grayst;
137 /* We know there's only one structure since we're given simple caps */
138 caps = gst_caps_copy (caps);
140 yuvst = gst_caps_get_structure (caps, 0);
142 gst_structure_set_name (yuvst, "video/x-raw-yuv");
143 gst_structure_remove_fields (yuvst, "format", "endianness", "depth",
144 "bpp", "red_mask", "green_mask", "blue_mask", "alpha_mask",
145 "palette_data", "color-matrix", NULL);
147 rgbst = gst_structure_copy (yuvst);
148 gst_structure_set_name (rgbst, "video/x-raw-rgb");
149 gst_structure_remove_fields (rgbst, "color-matrix", "chroma-site", NULL);
151 grayst = gst_structure_copy (rgbst);
152 gst_structure_set_name (grayst, "video/x-raw-gray");
154 gst_caps_append_structure (caps, rgbst);
155 gst_caps_append_structure (caps, grayst);
162 gst_csp_structure_is_alpha (GstStructure * s)
166 name = gst_structure_get_name_id (s);
168 if (name == _QRAWRGB) {
169 return gst_structure_id_has_field (s, _QALPHAMASK);
170 } else if (name == _QRAWYUV) {
173 if (!gst_structure_get_fourcc (s, "format", &fourcc))
176 return (fourcc == GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'));
182 /* The caps can be transformed into any other caps with format info removed.
183 * However, we should prefer passthrough, so if passthrough is possible,
184 * put it first in the list. */
186 gst_csp_transform_caps (GstBaseTransform * btrans,
187 GstPadDirection direction, GstCaps * caps, GstCaps * filter)
193 GstCaps *alpha, *non_alpha;
195 template = gst_static_pad_template_get_caps (&gst_csp_src_template);
196 result = gst_caps_copy (caps);
198 /* Get all possible caps that we can transform to */
199 tmp = gst_csp_caps_remove_format_info (caps);
200 tmp2 = gst_caps_intersect (tmp, template);
201 gst_caps_unref (tmp);
204 /* Now move alpha formats to the beginning if caps is an alpha format
205 * or at the end if caps is no alpha format */
206 alpha = gst_caps_new_empty ();
207 non_alpha = gst_caps_new_empty ();
209 while ((s = gst_caps_steal_structure (tmp, 0))) {
210 if (gst_csp_structure_is_alpha (s))
211 gst_caps_append_structure (alpha, s);
213 gst_caps_append_structure (non_alpha, s);
216 s = gst_caps_get_structure (caps, 0);
217 gst_caps_unref (tmp);
219 if (gst_csp_structure_is_alpha (s)) {
220 gst_caps_append (alpha, non_alpha);
223 gst_caps_append (non_alpha, alpha);
227 gst_caps_append (result, tmp);
229 GST_DEBUG_OBJECT (btrans, "transformed %" GST_PTR_FORMAT " into %"
230 GST_PTR_FORMAT, caps, result);
236 gst_csp_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
240 GstVideoFormat in_format;
241 GstVideoFormat out_format;
242 gint in_height, in_width;
243 gint out_height, out_width;
244 gint in_fps_n, in_fps_d, in_par_n, in_par_d;
245 gint out_fps_n, out_fps_d, out_par_n, out_par_d;
246 gboolean have_in_par, have_out_par;
247 gboolean have_in_interlaced, have_out_interlaced;
248 gboolean in_interlaced, out_interlaced;
250 ColorSpaceColorSpec in_spec, out_spec;
252 space = GST_CSP (btrans);
254 if (space->convert) {
255 colorspace_convert_free (space->convert);
260 ret = gst_video_format_parse_caps (incaps, &in_format, &in_width, &in_height);
262 goto no_width_height;
264 ret = gst_video_parse_caps_framerate (incaps, &in_fps_n, &in_fps_d);
268 have_in_par = gst_video_parse_caps_pixel_aspect_ratio (incaps,
269 &in_par_n, &in_par_d);
270 have_in_interlaced = gst_video_format_parse_caps_interlaced (incaps,
273 if (gst_video_format_is_rgb (in_format)) {
274 in_spec = COLOR_SPEC_RGB;
275 } else if (gst_video_format_is_yuv (in_format)) {
276 const gchar *matrix = gst_video_parse_caps_color_matrix (incaps);
278 if (matrix && g_str_equal (matrix, "hdtv"))
279 in_spec = COLOR_SPEC_YUV_BT709;
281 in_spec = COLOR_SPEC_YUV_BT470_6;
283 in_spec = COLOR_SPEC_GRAY;
289 gst_video_format_parse_caps (outcaps, &out_format, &out_width,
292 goto no_width_height;
294 ret = gst_video_parse_caps_framerate (outcaps, &out_fps_n, &out_fps_d);
298 have_out_par = gst_video_parse_caps_pixel_aspect_ratio (outcaps,
299 &out_par_n, &out_par_d);
300 have_out_interlaced = gst_video_format_parse_caps_interlaced (incaps,
303 if (gst_video_format_is_rgb (out_format)) {
304 out_spec = COLOR_SPEC_RGB;
305 } else if (gst_video_format_is_yuv (out_format)) {
306 const gchar *matrix = gst_video_parse_caps_color_matrix (outcaps);
308 if (matrix && g_str_equal (matrix, "hdtv"))
309 out_spec = COLOR_SPEC_YUV_BT709;
311 out_spec = COLOR_SPEC_YUV_BT470_6;
313 out_spec = COLOR_SPEC_GRAY;
316 /* these must match */
317 if (in_width != out_width || in_height != out_height ||
318 in_fps_n != out_fps_n || in_fps_d != out_fps_d)
319 goto format_mismatch;
321 /* if present, these must match too */
322 if (have_in_par && have_out_par &&
323 (in_par_n != out_par_n || in_par_d != out_par_d))
324 goto format_mismatch;
326 /* if present, these must match too */
327 if (have_in_interlaced && have_out_interlaced &&
328 in_interlaced != out_interlaced)
329 goto format_mismatch;
331 space->from_format = in_format;
332 space->from_spec = in_spec;
333 space->to_format = out_format;
334 space->to_spec = out_spec;
335 space->width = in_width;
336 space->height = in_height;
337 space->interlaced = in_interlaced;
339 space->convert = colorspace_convert_new (out_format, out_spec, in_format,
340 in_spec, in_width, in_height);
341 if (space->convert) {
342 colorspace_convert_set_interlaced (space->convert, in_interlaced);
344 /* palette, only for from data */
345 if (space->from_format == GST_VIDEO_FORMAT_RGB8_PALETTED &&
346 space->to_format == GST_VIDEO_FORMAT_RGB8_PALETTED) {
347 goto format_mismatch;
348 } else if (space->from_format == GST_VIDEO_FORMAT_RGB8_PALETTED) {
352 palette = gst_video_parse_caps_palette (incaps);
354 if (!palette || gst_buffer_get_size (palette) < 256 * 4) {
356 gst_buffer_unref (palette);
357 goto invalid_palette;
360 data = gst_buffer_map (palette, NULL, NULL, GST_MAP_READ);
361 colorspace_convert_set_palette (space->convert, data);
362 gst_buffer_unmap (palette, data, -1);
364 gst_buffer_unref (palette);
365 } else if (space->to_format == GST_VIDEO_FORMAT_RGB8_PALETTED) {
366 const guint32 *palette;
369 palette = colorspace_convert_get_palette (space->convert);
371 p_buf = gst_buffer_new_and_alloc (256 * 4);
372 gst_buffer_fill (p_buf, 0, palette, 256 * 4);
373 gst_caps_set_simple (outcaps, "palette_data", GST_TYPE_BUFFER, p_buf, NULL);
374 gst_buffer_unref (p_buf);
377 GST_DEBUG ("reconfigured %d %d", space->from_format, space->to_format);
384 GST_ERROR_OBJECT (space, "did not specify width or height");
385 space->from_format = GST_VIDEO_FORMAT_UNKNOWN;
386 space->to_format = GST_VIDEO_FORMAT_UNKNOWN;
391 GST_ERROR_OBJECT (space, "did not specify framerate");
392 space->from_format = GST_VIDEO_FORMAT_UNKNOWN;
393 space->to_format = GST_VIDEO_FORMAT_UNKNOWN;
398 GST_ERROR_OBJECT (space, "input and output formats do not match");
399 space->from_format = GST_VIDEO_FORMAT_UNKNOWN;
400 space->to_format = GST_VIDEO_FORMAT_UNKNOWN;
405 GST_ERROR_OBJECT (space, "invalid palette");
406 space->from_format = GST_VIDEO_FORMAT_UNKNOWN;
407 space->to_format = GST_VIDEO_FORMAT_UNKNOWN;
412 #define gst_csp_parent_class parent_class
413 G_DEFINE_TYPE (GstCsp, gst_csp, GST_TYPE_VIDEO_FILTER);
416 gst_csp_finalize (GObject * obj)
418 GstCsp *space = GST_CSP (obj);
420 if (space->convert) {
421 colorspace_convert_free (space->convert);
424 G_OBJECT_CLASS (parent_class)->finalize (obj);
428 gst_csp_class_init (GstCspClass * klass)
430 GObjectClass *gobject_class = (GObjectClass *) klass;
431 GstElementClass *gstelement_class = (GstElementClass *) klass;
432 GstBaseTransformClass *gstbasetransform_class =
433 (GstBaseTransformClass *) klass;
435 gobject_class->set_property = gst_csp_set_property;
436 gobject_class->get_property = gst_csp_get_property;
437 gobject_class->finalize = gst_csp_finalize;
439 gst_element_class_add_pad_template (gstelement_class,
440 gst_static_pad_template_get (&gst_csp_src_template));
441 gst_element_class_add_pad_template (gstelement_class,
442 gst_static_pad_template_get (&gst_csp_sink_template));
444 gst_element_class_set_details_simple (gstelement_class,
445 " Colorspace converter", "Filter/Converter/Video",
446 "Converts video from one colorspace to another",
447 "GStreamer maintainers <gstreamer-devel@lists.sourceforge.net>");
449 _QRAWRGB = g_quark_from_string ("video/x-raw-rgb");
450 _QRAWYUV = g_quark_from_string ("video/x-raw-yuv");
451 _QALPHAMASK = g_quark_from_string ("alpha_mask");
453 gstbasetransform_class->transform_caps =
454 GST_DEBUG_FUNCPTR (gst_csp_transform_caps);
455 gstbasetransform_class->set_caps = GST_DEBUG_FUNCPTR (gst_csp_set_caps);
456 gstbasetransform_class->get_unit_size =
457 GST_DEBUG_FUNCPTR (gst_csp_get_unit_size);
458 gstbasetransform_class->transform = GST_DEBUG_FUNCPTR (gst_csp_transform);
460 gstbasetransform_class->passthrough_on_same_caps = TRUE;
462 g_object_class_install_property (gobject_class, PROP_DITHER,
463 g_param_spec_enum ("dither", "Dither", "Apply dithering while converting",
464 dither_method_get_type (), DITHER_NONE,
465 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
470 gst_csp_init (GstCsp * space)
472 space->from_format = GST_VIDEO_FORMAT_UNKNOWN;
473 space->to_format = GST_VIDEO_FORMAT_UNKNOWN;
477 gst_csp_set_property (GObject * object, guint property_id,
478 const GValue * value, GParamSpec * pspec)
482 g_return_if_fail (GST_IS_CSP (object));
483 csp = GST_CSP (object);
485 switch (property_id) {
487 csp->dither = g_value_get_enum (value);
490 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
496 gst_csp_get_property (GObject * object, guint property_id,
497 GValue * value, GParamSpec * pspec)
501 g_return_if_fail (GST_IS_CSP (object));
502 csp = GST_CSP (object);
504 switch (property_id) {
506 g_value_set_enum (value, csp->dither);
509 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
515 gst_csp_get_unit_size (GstBaseTransform * btrans, GstCaps * caps, gsize * size)
518 GstVideoFormat format;
523 ret = gst_video_format_parse_caps (caps, &format, &width, &height);
525 *size = gst_video_format_get_size (format, width, height);
532 gst_csp_transform (GstBaseTransform * btrans, GstBuffer * inbuf,
536 guint8 *indata, *outdata;
537 gsize insize, outsize;
539 space = GST_CSP (btrans);
541 GST_DEBUG ("from %d -> to %d", space->from_format, space->to_format);
543 if (G_UNLIKELY (space->from_format == GST_VIDEO_FORMAT_UNKNOWN ||
544 space->to_format == GST_VIDEO_FORMAT_UNKNOWN))
547 colorspace_convert_set_dither (space->convert, space->dither);
549 indata = gst_buffer_map (inbuf, &insize, NULL, GST_MAP_READ);
550 outdata = gst_buffer_map (outbuf, &outsize, NULL, GST_MAP_WRITE);
552 colorspace_convert_convert (space->convert, outdata, indata);
554 gst_buffer_unmap (outbuf, outdata, outsize);
555 gst_buffer_unmap (inbuf, indata, insize);
557 /* baseclass copies timestamps */
558 GST_DEBUG ("from %d -> to %d done", space->from_format, space->to_format);
565 GST_ELEMENT_ERROR (space, CORE, NOT_IMPLEMENTED, (NULL),
566 ("attempting to convert colorspaces between unknown formats"));
567 return GST_FLOW_NOT_NEGOTIATED;
572 GST_ELEMENT_ERROR (space, CORE, NOT_IMPLEMENTED, (NULL),
573 ("cannot convert between formats"));
574 return GST_FLOW_NOT_SUPPORTED;
580 plugin_init (GstPlugin * plugin)
582 GST_DEBUG_CATEGORY_INIT (colorspace_debug, "colorspace", 0,
583 "Colorspace Converter");
584 GST_DEBUG_CATEGORY_GET (colorspace_performance, "GST_PERFORMANCE");
586 return gst_element_register (plugin, "colorspace",
587 GST_RANK_NONE, GST_TYPE_CSP);
590 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
592 "colorspace", "Colorspace conversion", plugin_init, VERSION, "LGPL", "", "")