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-videoconvert
26 * Convert video frames between a great variety of videoconvert formats.
29 * <title>Example launch line</title>
31 * gst-launch -v videotestsrc ! video/x-raw-yuv,format=\(fourcc\)YUY2 ! videoconvert ! ximagesink
40 #include "gstvideoconvert.h"
41 #include <gst/video/video.h>
45 GST_DEBUG_CATEGORY (videoconvert_debug);
46 #define GST_CAT_DEFAULT videoconvert_debug
47 GST_DEBUG_CATEGORY (videoconvert_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_video_convert_src_template =
81 GST_STATIC_PAD_TEMPLATE ("src",
84 GST_STATIC_CAPS (CSP_VIDEO_CAPS)
87 static GstStaticPadTemplate gst_video_convert_sink_template =
88 GST_STATIC_PAD_TEMPLATE ("sink",
91 GST_STATIC_CAPS (CSP_VIDEO_CAPS)
94 GType gst_video_convert_get_type (void);
96 static void gst_video_convert_set_property (GObject * object,
97 guint property_id, const GValue * value, GParamSpec * pspec);
98 static void gst_video_convert_get_property (GObject * object,
99 guint property_id, GValue * value, GParamSpec * pspec);
101 static gboolean gst_video_convert_set_caps (GstBaseTransform * btrans,
102 GstCaps * incaps, GstCaps * outcaps);
103 static gboolean gst_video_convert_get_unit_size (GstBaseTransform * btrans,
104 GstCaps * caps, gsize * size);
105 static GstFlowReturn gst_video_convert_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_video_convert_caps_remove_format_info (GstCaps * caps)
135 GstStructure *yuvst, *rgbst, *grayst;
139 res = gst_caps_new_empty ();
141 n = gst_caps_get_size (caps);
142 for (i = 0; i < n; i++) {
143 yuvst = gst_caps_get_structure (caps, i);
145 /* If this is already expressed by the existing caps
146 * skip this structure */
147 if (i > 0 && gst_caps_is_subset_structure (res, yuvst))
150 yuvst = gst_structure_copy (yuvst);
151 gst_structure_set_name (yuvst, "video/x-raw-yuv");
152 gst_structure_remove_fields (yuvst, "format", "endianness", "depth",
153 "bpp", "red_mask", "green_mask", "blue_mask", "alpha_mask",
154 "palette_data", NULL);
156 rgbst = gst_structure_copy (yuvst);
157 gst_structure_set_name (rgbst, "video/x-raw-rgb");
158 gst_structure_remove_fields (rgbst, "color-matrix", "chroma-site", NULL);
160 grayst = gst_structure_copy (rgbst);
161 gst_structure_set_name (grayst, "video/x-raw-gray");
163 gst_caps_append_structure (res, yuvst);
164 gst_caps_append_structure (res, rgbst);
165 gst_caps_append_structure (res, grayst);
171 /* The caps can be transformed into any other caps with format info removed.
172 * However, we should prefer passthrough, so if passthrough is possible,
173 * put it first in the list. */
175 gst_video_convert_transform_caps (GstBaseTransform * btrans,
176 GstPadDirection direction, GstCaps * caps, GstCaps * filter)
182 template = gst_static_pad_template_get_caps (&gst_video_convert_src_template);
183 result = gst_caps_copy (caps);
185 /* Get all possible caps that we can transform to */
186 tmp = gst_video_convert_caps_remove_format_info (caps);
189 tmp2 = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
190 gst_caps_unref (tmp);
196 GST_DEBUG_OBJECT (btrans, "transformed %" GST_PTR_FORMAT " into %"
197 GST_PTR_FORMAT, caps, result);
203 gst_video_convert_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
206 GstVideoConvert *space;
207 GstVideoFormat in_format;
208 GstVideoFormat out_format;
209 gint in_height, in_width;
210 gint out_height, out_width;
211 gint in_fps_n, in_fps_d, in_par_n, in_par_d;
212 gint out_fps_n, out_fps_d, out_par_n, out_par_d;
213 gboolean have_in_par, have_out_par;
214 gboolean have_in_interlaced, have_out_interlaced;
215 gboolean in_interlaced, out_interlaced;
217 ColorSpaceColorSpec in_spec, out_spec;
219 space = GST_VIDEO_CONVERT_CAST (btrans);
221 if (space->convert) {
222 videoconvert_convert_free (space->convert);
227 ret = gst_video_format_parse_caps (incaps, &in_format, &in_width, &in_height);
229 goto no_width_height;
231 ret = gst_video_parse_caps_framerate (incaps, &in_fps_n, &in_fps_d);
235 have_in_par = gst_video_parse_caps_pixel_aspect_ratio (incaps,
236 &in_par_n, &in_par_d);
237 have_in_interlaced = gst_video_format_parse_caps_interlaced (incaps,
240 if (gst_video_format_is_rgb (in_format)) {
241 in_spec = COLOR_SPEC_RGB;
242 } else if (gst_video_format_is_yuv (in_format)) {
243 const gchar *matrix = gst_video_parse_caps_color_matrix (incaps);
245 if (matrix && g_str_equal (matrix, "hdtv"))
246 in_spec = COLOR_SPEC_YUV_BT709;
248 in_spec = COLOR_SPEC_YUV_BT470_6;
250 in_spec = COLOR_SPEC_GRAY;
256 gst_video_format_parse_caps (outcaps, &out_format, &out_width,
259 goto no_width_height;
261 ret = gst_video_parse_caps_framerate (outcaps, &out_fps_n, &out_fps_d);
265 have_out_par = gst_video_parse_caps_pixel_aspect_ratio (outcaps,
266 &out_par_n, &out_par_d);
267 have_out_interlaced = gst_video_format_parse_caps_interlaced (incaps,
270 if (gst_video_format_is_rgb (out_format)) {
271 out_spec = COLOR_SPEC_RGB;
272 } else if (gst_video_format_is_yuv (out_format)) {
273 const gchar *matrix = gst_video_parse_caps_color_matrix (outcaps);
275 if (matrix && g_str_equal (matrix, "hdtv"))
276 out_spec = COLOR_SPEC_YUV_BT709;
278 out_spec = COLOR_SPEC_YUV_BT470_6;
280 out_spec = COLOR_SPEC_GRAY;
283 /* these must match */
284 if (in_width != out_width || in_height != out_height ||
285 in_fps_n != out_fps_n || in_fps_d != out_fps_d)
286 goto format_mismatch;
288 /* if present, these must match too */
289 if (have_in_par && have_out_par &&
290 (in_par_n != out_par_n || in_par_d != out_par_d))
291 goto format_mismatch;
293 /* if present, these must match too */
294 if (have_in_interlaced && have_out_interlaced &&
295 in_interlaced != out_interlaced)
296 goto format_mismatch;
298 space->from_format = in_format;
299 space->from_spec = in_spec;
300 space->to_format = out_format;
301 space->to_spec = out_spec;
302 space->width = in_width;
303 space->height = in_height;
304 space->interlaced = in_interlaced;
306 space->convert = videoconvert_convert_new (out_format, out_spec, in_format,
307 in_spec, in_width, in_height);
308 if (space->convert) {
309 videoconvert_convert_set_interlaced (space->convert, in_interlaced);
311 /* palette, only for from data */
312 if (space->from_format == GST_VIDEO_FORMAT_RGB8_PALETTED &&
313 space->to_format == GST_VIDEO_FORMAT_RGB8_PALETTED) {
314 goto format_mismatch;
315 } else if (space->from_format == GST_VIDEO_FORMAT_RGB8_PALETTED) {
319 palette = gst_video_parse_caps_palette (incaps);
321 if (!palette || gst_buffer_get_size (palette) < 256 * 4) {
323 gst_buffer_unref (palette);
324 goto invalid_palette;
327 data = gst_buffer_map (palette, NULL, NULL, GST_MAP_READ);
328 videoconvert_convert_set_palette (space->convert, data);
329 gst_buffer_unmap (palette, data, -1);
331 gst_buffer_unref (palette);
332 } else if (space->to_format == GST_VIDEO_FORMAT_RGB8_PALETTED) {
333 const guint32 *palette;
336 palette = videoconvert_convert_get_palette (space->convert);
338 p_buf = gst_buffer_new_and_alloc (256 * 4);
339 gst_buffer_fill (p_buf, 0, palette, 256 * 4);
340 gst_caps_set_simple (outcaps, "palette_data", GST_TYPE_BUFFER, p_buf, NULL);
341 gst_buffer_unref (p_buf);
344 GST_DEBUG ("reconfigured %d %d", space->from_format, space->to_format);
351 GST_ERROR_OBJECT (space, "did not specify width or height");
352 space->from_format = GST_VIDEO_FORMAT_UNKNOWN;
353 space->to_format = GST_VIDEO_FORMAT_UNKNOWN;
358 GST_ERROR_OBJECT (space, "did not specify framerate");
359 space->from_format = GST_VIDEO_FORMAT_UNKNOWN;
360 space->to_format = GST_VIDEO_FORMAT_UNKNOWN;
365 GST_ERROR_OBJECT (space, "input and output formats do not match");
366 space->from_format = GST_VIDEO_FORMAT_UNKNOWN;
367 space->to_format = GST_VIDEO_FORMAT_UNKNOWN;
372 GST_ERROR_OBJECT (space, "invalid palette");
373 space->from_format = GST_VIDEO_FORMAT_UNKNOWN;
374 space->to_format = GST_VIDEO_FORMAT_UNKNOWN;
379 #define gst_video_convert_parent_class parent_class
380 G_DEFINE_TYPE (GstVideoConvert, gst_video_convert, GST_TYPE_VIDEO_FILTER);
383 gst_video_convert_finalize (GObject * obj)
385 GstVideoConvert *space = GST_VIDEO_CONVERT (obj);
387 if (space->convert) {
388 videoconvert_convert_free (space->convert);
391 G_OBJECT_CLASS (parent_class)->finalize (obj);
395 gst_video_convert_class_init (GstVideoConvertClass * klass)
397 GObjectClass *gobject_class = (GObjectClass *) klass;
398 GstElementClass *gstelement_class = (GstElementClass *) klass;
399 GstBaseTransformClass *gstbasetransform_class =
400 (GstBaseTransformClass *) klass;
402 gobject_class->set_property = gst_video_convert_set_property;
403 gobject_class->get_property = gst_video_convert_get_property;
404 gobject_class->finalize = gst_video_convert_finalize;
406 gst_element_class_add_pad_template (gstelement_class,
407 gst_static_pad_template_get (&gst_video_convert_src_template));
408 gst_element_class_add_pad_template (gstelement_class,
409 gst_static_pad_template_get (&gst_video_convert_sink_template));
411 gst_element_class_set_details_simple (gstelement_class,
412 " Colorspace converter", "Filter/Converter/Video",
413 "Converts video from one colorspace to another",
414 "GStreamer maintainers <gstreamer-devel@lists.sourceforge.net>");
416 _QRAWRGB = g_quark_from_string ("video/x-raw-rgb");
417 _QRAWYUV = g_quark_from_string ("video/x-raw-yuv");
418 _QALPHAMASK = g_quark_from_string ("alpha_mask");
420 gstbasetransform_class->transform_caps =
421 GST_DEBUG_FUNCPTR (gst_video_convert_transform_caps);
422 gstbasetransform_class->set_caps =
423 GST_DEBUG_FUNCPTR (gst_video_convert_set_caps);
424 gstbasetransform_class->get_unit_size =
425 GST_DEBUG_FUNCPTR (gst_video_convert_get_unit_size);
426 gstbasetransform_class->transform =
427 GST_DEBUG_FUNCPTR (gst_video_convert_transform);
429 gstbasetransform_class->passthrough_on_same_caps = TRUE;
431 g_object_class_install_property (gobject_class, PROP_DITHER,
432 g_param_spec_enum ("dither", "Dither", "Apply dithering while converting",
433 dither_method_get_type (), DITHER_NONE,
434 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
438 gst_video_convert_init (GstVideoConvert * space)
440 space->from_format = GST_VIDEO_FORMAT_UNKNOWN;
441 space->to_format = GST_VIDEO_FORMAT_UNKNOWN;
445 gst_video_convert_set_property (GObject * object, guint property_id,
446 const GValue * value, GParamSpec * pspec)
448 GstVideoConvert *csp;
450 csp = GST_VIDEO_CONVERT (object);
452 switch (property_id) {
454 csp->dither = g_value_get_enum (value);
457 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
463 gst_video_convert_get_property (GObject * object, guint property_id,
464 GValue * value, GParamSpec * pspec)
466 GstVideoConvert *csp;
468 csp = GST_VIDEO_CONVERT (object);
470 switch (property_id) {
472 g_value_set_enum (value, csp->dither);
475 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
481 gst_video_convert_get_unit_size (GstBaseTransform * btrans, GstCaps * caps,
485 GstVideoFormat format;
490 ret = gst_video_format_parse_caps (caps, &format, &width, &height);
492 *size = gst_video_format_get_size (format, width, height);
499 gst_video_convert_transform (GstBaseTransform * btrans, GstBuffer * inbuf,
502 GstVideoConvert *space;
503 guint8 *indata, *outdata;
504 gsize insize, outsize;
506 space = GST_VIDEO_CONVERT_CAST (btrans);
508 GST_DEBUG ("from %d -> to %d", space->from_format, space->to_format);
510 if (G_UNLIKELY (space->from_format == GST_VIDEO_FORMAT_UNKNOWN ||
511 space->to_format == GST_VIDEO_FORMAT_UNKNOWN))
514 videoconvert_convert_set_dither (space->convert, space->dither);
516 indata = gst_buffer_map (inbuf, &insize, NULL, GST_MAP_READ);
517 outdata = gst_buffer_map (outbuf, &outsize, NULL, GST_MAP_WRITE);
519 videoconvert_convert_convert (space->convert, outdata, indata);
521 gst_buffer_unmap (outbuf, outdata, outsize);
522 gst_buffer_unmap (inbuf, indata, insize);
524 /* baseclass copies timestamps */
525 GST_DEBUG ("from %d -> to %d done", space->from_format, space->to_format);
532 GST_ELEMENT_ERROR (space, CORE, NOT_IMPLEMENTED, (NULL),
533 ("attempting to convert colorspaces between unknown formats"));
534 return GST_FLOW_NOT_NEGOTIATED;
539 GST_ELEMENT_ERROR (space, CORE, NOT_IMPLEMENTED, (NULL),
540 ("cannot convert between formats"));
541 return GST_FLOW_NOT_SUPPORTED;
547 plugin_init (GstPlugin * plugin)
549 GST_DEBUG_CATEGORY_INIT (videoconvert_debug, "videoconvert", 0,
550 "Colorspace Converter");
551 GST_DEBUG_CATEGORY_GET (videoconvert_performance, "GST_PERFORMANCE");
553 return gst_element_register (plugin, "videoconvert",
554 GST_RANK_NONE, GST_TYPE_VIDEO_CONVERT);
557 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
559 "videoconvert", "Colorspace conversion", plugin_init, VERSION, "LGPL", "",