1 /* GStreamer Plugins Base utils library source/sink/codec description support
2 * Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * SECTION:gstpbutilsdescriptions
22 * @short_description: Provides human-readable descriptions for caps/codecs
23 * and encoder, decoder, URI source and URI sink elements
27 * The above functions provide human-readable strings for media formats
28 * and decoder/demuxer/depayloader/encoder/muxer/payloader elements for use
29 * in error dialogs or other messages shown to users.
32 * gst_pb_utils_add_codec_description_to_tag_list() is a utility function
33 * for demuxer and decoder elements to add audio/video codec tags from a
34 * given (fixed) #GstCaps.
43 #include "gst/gst-i18n-plugin.h"
45 #include <gst/audio/audio.h>
46 #include <gst/video/video.h>
49 #include "pbutils-private.h"
55 FLAG_CONTAINER = (1 << 0), /* format is a container format (muxed) */
56 FLAG_SYSTEMSTREAM = (1 << 1) /* match record only if caps have systemstream=true */
66 static const FormatInfo formats[] = {
67 /* container/tag formats with static descriptions */
68 {"application/gxf", "General Exchange Format (GXF)", FLAG_CONTAINER},
69 {"application/ogg", "Ogg", FLAG_CONTAINER},
70 {"application/mxf", "Material eXchange Format (MXF)", FLAG_CONTAINER},
71 {"application/vnd.rn-realmedia", "Realmedia", FLAG_CONTAINER},
72 {"application/x-annodex", "Ogg", FLAG_CONTAINER},
73 {"application/x-id3", N_("ID3 tag"), FLAG_CONTAINER},
74 {"application/x-ape", N_("APE tag"), FLAG_CONTAINER},
75 {"application/x-apetag", N_("APE tag"), FLAG_CONTAINER},
76 {"application/x-icy", N_("ICY internet radio"), FLAG_CONTAINER},
77 {"application/x-3gp", "3GP", FLAG_CONTAINER},
78 {"application/x-pn-realaudio", "RealAudio", FLAG_CONTAINER},
79 {"application/x-yuv4mpeg", "Y4M", FLAG_CONTAINER},
80 {"multipart/x-mixed-replace", "Multipart", FLAG_CONTAINER},
81 {"video/x-fli", "FLI/FLC/FLX Animation", FLAG_CONTAINER},
82 {"video/x-flv", "Flash", FLAG_CONTAINER},
83 {"video/x-matroska", "Matroska", FLAG_CONTAINER},
84 {"video/webm", "WebM", FLAG_CONTAINER},
85 {"video/x-ms-asf", "Advanced Streaming Format (ASF)", FLAG_CONTAINER},
86 {"video/x-msvideo", "Audio Video Interleave (AVI)", FLAG_CONTAINER},
87 {"video/x-quicktime", "Quicktime", FLAG_CONTAINER},
88 {"video/quicktime", "Quicktime", FLAG_CONTAINER},
89 {"video/mj2", "Motion JPEG 2000", FLAG_CONTAINER},
91 /* audio formats with static descriptions */
92 {"audio/x-ac3", "AC-3 (ATSC A/52)", 0},
93 {"audio/ac3", "AC-3 (ATSC A/52)", 0},
94 {"audio/x-private-ac3", "DVD AC-3 (ATSC A/52)", 0},
95 {"audio/x-private1-ac3", "DVD AC-3 (ATSC A/52)", 0},
96 {"audio/x-alaw", "A-Law", 0},
97 {"audio/amr", "Adaptive Multi Rate (AMR)", 0},
98 {"audio/AMR", "Adaptive Multi Rate (AMR)", 0},
99 {"audio/AMR-WB", "Adaptive Multi Rate WideBand (AMR-WB)", 0},
100 {"audio/iLBC-sh", "Internet Low Bitrate Codec (iLBC)", 0},
101 {"audio/ms-gsm", "MS GSM", 0},
102 {"audio/qcelp", "QCELP", 0},
103 {"audio/aiff", "Audio Interchange File Format (AIFF)", 0},
104 {"audio/x-aiff", "Audio Interchange File Format (AIFF)", 0},
105 {"audio/x-alac", N_("Apple Lossless Audio (ALAC)"), 0},
106 {"audio/x-amr-nb-sh", "Adaptive Multi Rate NarrowBand (AMR-NB)", 0},
107 {"audio/x-amr-wb-sh", "Adaptive Multi Rate WideBand (AMR-WB)", 0},
108 {"audio/x-au", "Sun .au", 0},
109 {"audio/x-celt", "Constrained Energy Lapped Transform (CELT)", 0},
110 {"audio/x-cinepak", "Cinepak Audio", 0},
111 {"audio/x-dpcm", "DPCM", 0},
112 {"audio/x-dts", "DTS", 0},
113 {"audio/x-private1-dts", "DTS", 0},
114 {"audio/x-dv", "DV Audio", 0},
115 {"audio/x-flac", N_("Free Lossless Audio Codec (FLAC)"), 0},
116 {"audio/x-gsm", "GSM", 0},
117 {"audio/x-iec958", "S/PDIF IEC958", 0}, /* TODO: check description */
118 {"audio/x-iLBC", "Internet Low Bitrate Codec (iLBC)", 0},
119 {"audio/x-ircam", "Berkeley/IRCAM/CARL", 0},
120 {"audio/x-lpcm", "LPCM", 0},
121 {"audio/x-private1-lpcm", "DVD LPCM", 0},
122 {"audio/x-m4a", "MPEG-4 AAC", FLAG_CONTAINER},
123 {"audio/x-mod", "Module Music Format (MOD)", 0},
124 {"audio/x-mulaw", "Mu-Law", 0},
125 {"audio/x-musepack", "Musepack (MPC)", 0},
126 {"audio/x-nellymoser", "Nellymoser Asao", 0},
127 {"audio/x-nist", "Sphere NIST", 0},
128 {"audio/x-nsf", "Nintendo NSF", 0},
129 {"audio/x-paris", "Ensoniq PARIS", 0},
130 {"audio/x-qdm", "QDesign Music (QDM)", 0},
131 {"audio/x-qdm2", "QDesign Music (QDM) 2", 0},
132 {"audio/x-ralf-mpeg4-generic", "Real Audio Lossless (RALF)", 0},
133 {"audio/x-sds", "SDS", 0},
134 {"audio/x-shorten", "Shorten Lossless", 0},
135 {"audio/x-sid", "Sid", 0},
136 {"audio/x-sipro", "Sipro/ACELP.NET Voice", 0},
137 {"audio/x-siren", "Siren", 0},
138 {"audio/x-spc", "SNES-SPC700 Sound File Data", 0},
139 {"audio/x-speex", "Speex", 0},
140 {"audio/x-svx", "Amiga IFF / SVX8 / SV16", 0},
141 {"audio/x-tta", N_("Lossless True Audio (TTA)"), 0},
142 {"audio/x-ttafile", N_("Lossless True Audio (TTA)"), 0},
143 {"audio/x-vnd.sony.atrac3", "Sony ATRAC3", 0},
144 {"audio/x-vorbis", "Vorbis", 0},
145 {"audio/x-voc", "SoundBlaster VOC", 0},
146 {"audio/x-w64", "Sonic Foundry Wave64", 0},
147 {"audio/x-wav", "WAV", 0},
148 {"audio/x-wavpack", "Wavpack", 0},
149 {"audio/x-wavpack-correction", "Wavpack", 0},
150 {"audio/x-wms", N_("Windows Media Speech"), 0},
151 {"audio/x-voxware", "Voxware", 0},
154 /* video formats with static descriptions */
155 {"video/sp5x", "Sunplus JPEG 5.x", 0},
156 {"video/vivo", "Vivo", 0},
157 {"video/x-3ivx", "3ivx", 0},
158 {"video/x-4xm", "4X Techologies Video", 0},
159 {"video/x-apple-video", "Apple video", 0},
160 {"video/x-aasc", "Autodesk Animator", 0},
161 {"video/x-camtasia", "TechSmith Camtasia", 0},
162 {"video/x-cdxa", "RIFF/CDXA (VCD)", 0},
163 {"video/x-cinepak", "Cinepak Video", 0},
164 {"video/x-cirrus-logic-accupak", "Cirrus Logipak AccuPak", 0},
165 {"video/x-compressed-yuv", N_("CYUV Lossless"), 0},
166 {"video/x-dirac", "Dirac", 0},
167 {"video/x-dnxhd", "Digital Nonlinear Extensible High Definition (DNxHD)", 0},
168 /* FIXME 0.11: rename to subpicture/x-dvd or so */
169 {"video/x-dvd-subpicture", "DVD subpicture", 0},
170 {"video/x-ffv", N_("FFMpeg v1"), 0},
171 {"video/x-flash-screen", "Flash Screen Video", 0},
172 {"video/x-flash-video", "Sorenson Spark Video", 0},
173 {"video/x-h261", "H.261", 0},
174 {"video/x-huffyuv", "Huffyuv", 0},
175 {"video/x-intel-h263", "Intel H.263", 0},
176 {"video/x-jpeg", "Motion JPEG", 0},
177 /* { "video/x-jpeg-b", "", 0 }, does this actually exist? */
178 {"video/x-loco", "LOCO Lossless", 0},
179 {"video/x-mimic", "MIMIC", 0},
180 {"video/x-mjpeg", "Motion-JPEG", 0},
181 {"video/x-mjpeg-b", "Motion-JPEG format B", 0},
182 {"video/mpegts", "MPEG-2 Transport Stream", FLAG_CONTAINER},
183 {"video/x-mng", "Multiple Image Network Graphics (MNG)", 0},
184 {"video/x-mszh", N_("Lossless MSZH"), 0},
185 {"video/x-msvideocodec", "Microsoft Video 1", 0},
186 {"video/x-mve", "Interplay MVE", FLAG_CONTAINER},
187 {"video/x-nut", "NUT", FLAG_CONTAINER},
188 {"video/x-nuv", "MythTV NuppelVideo (NUV)", FLAG_CONTAINER},
189 {"video/x-qdrw", "Apple QuickDraw", 0},
190 {"video/x-smc", "Apple SMC", 0},
191 {"video/x-smoke", "Smoke", 0},
192 {"video/x-tarkin", "Tarkin", 0},
193 {"video/x-theora", "Theora", 0},
194 {"video/x-rle", N_("Run-length encoding"), 0},
195 {"video/x-ultimotion", "IBM UltiMotion", 0},
196 {"video/x-vcd", "VideoCD (VCD)", 0},
197 {"video/x-vmnc", "VMWare NC", 0},
198 {"video/x-vp3", "On2 VP3", 0},
199 {"video/x-vp5", "On2 VP5", 0},
200 {"video/x-vp6", "On2 VP6", 0},
201 {"video/x-vp6-flash", "On2 VP6/Flash", 0},
202 {"video/x-vp6-alpha", "On2 VP6 with alpha", 0},
203 {"video/x-vp7", "On2 VP7", 0},
204 {"video/x-vp8", "VP8", 0},
205 {"video/x-xvid", "XVID MPEG-4", 0},
206 {"video/x-zlib", "Lossless zlib video", 0},
207 {"video/x-zmbv", "Zip Motion Block video", 0},
209 /* image formats with static descriptions */
210 {"image/bmp", "BMP", 0},
211 {"image/x-bmp", "BMP", 0},
212 {"image/x-MS-bmp", "BMP", 0},
213 {"image/gif", "GIF", 0},
214 {"image/jpeg", "JPEG", 0},
215 {"image/jng", "JPEG Network Graphics (JNG)", 0},
216 {"image/png", "PNG", 0},
217 {"image/pbm", "Portable BitMap (PBM)", 0},
218 {"image/ppm", "Portable PixMap (PPM)", 0},
219 {"image/svg+xml", "Scalable Vector Graphics (SVG)", 0},
220 {"image/tiff", "TIFF", 0},
221 {"image/x-cmu-raster", "CMU Raster Format", 0},
222 {"image/x-degas", "DEGAS", 0},
223 {"image/x-icon", "ICO", 0},
224 {"image/x-j2c", "JPEG 2000", 0},
225 {"image/x-jpc", "JPEG 2000", 0},
226 {"image/jp2", "JPEG 2000", 0},
227 {"image/x-pcx", "PCX", 0},
228 {"image/x-xcf", "XFC", 0},
229 {"image/x-pixmap", "XPM", 0},
230 {"image/x-portable-anymap", "Portable AnyMap (PAM)", 0},
231 {"image/x-portable-graymap", "Portable GrayMap (PGM)", 0},
232 {"image/x-xpixmap", "XPM", 0},
233 {"image/x-quicktime", "QuickTime Image Format (QTIF)", 0},
234 {"image/x-sun-raster", "Sun Raster Format (RAS)", 0},
235 {"image/x-tga", "TGA", 0},
236 {"image/vnd.wap.wbmp", "Wireless Bitmap", 0},
238 /* subtitle formats with static descriptions */
239 {"application/x-ass", "ASS", 0},
240 {"application/x-subtitle-sami", N_("Sami subtitle format"), 0},
241 {"application/x-subtitle-tmplayer", N_("TMPlayer subtitle format"), 0},
242 {"application/x-kate", "Kate", 0},
243 {"subtitle/x-kate", N_("Kate subtitle format"), 0},
244 {"subpicture/x-dvb", "DVB subtitles", 0},
245 /* add variant field to typefinder? { "application/x-subtitle", N_("subtitle"), 0}, */
247 /* non-audio/video/container formats */
248 {"hdv/aux-v", "HDV AUX-V", 0},
249 {"hdv/aux-a", "HDV AUX-A", 0},
251 /* formats with dynamic descriptions */
252 {"audio/mpeg", NULL, 0},
253 {"audio/x-adpcm", NULL, 0},
254 {"audio/x-mace", NULL, 0},
255 {"audio/x-pn-realaudio", NULL, 0},
256 {"audio/x-raw", NULL, 0},
257 {"audio/x-wma", NULL, 0},
258 {"video/mpeg", NULL, FLAG_CONTAINER | FLAG_SYSTEMSTREAM},
259 {"video/mpeg", NULL, 0},
260 {"video/x-asus", NULL, 0},
261 {"video/x-ati-vcr", NULL, 0},
262 {"video/x-divx", NULL, 0},
263 {"video/x-dv", "Digital Video (DV) System Stream",
264 FLAG_CONTAINER | FLAG_SYSTEMSTREAM},
265 {"video/x-dv", "Digital Video (DV)", 0},
266 {"video/x-h263", NULL, 0},
267 {"video/x-h264", NULL, 0},
268 {"video/x-indeo", NULL, 0},
269 {"video/x-msmpeg", NULL, 0},
270 {"video/x-pn-realvideo", NULL, 0},
272 /* do these exist? are they used anywhere? */
273 {"video/x-pn-multirate-realvideo", NULL, 0},
274 {"audio/x-pn-multirate-realaudio", NULL, 0},
275 {"audio/x-pn-multirate-realaudio-live", NULL, 0},
277 {"video/x-truemotion", NULL, 0},
278 {"video/x-raw", NULL, 0},
279 {"video/x-svq", NULL, 0},
280 {"video/x-wmv", NULL, 0},
281 {"video/x-xan", NULL, 0}
284 /* returns static descriptions and dynamic ones (such as video/x-raw),
285 * or NULL if caps aren't known at all */
287 format_info_get_desc (const FormatInfo * info, const GstCaps * caps)
289 const GstStructure *s;
291 g_assert (info != NULL);
293 if (info->desc != NULL)
294 return g_strdup (_(info->desc));
296 s = gst_caps_get_structure (caps, 0);
298 if (strcmp (info->type, "video/x-raw") == 0) {
300 const gchar *str = 0;
301 GstVideoFormat format;
302 const GstVideoFormatInfo *finfo;
304 str = gst_structure_get_string (s, "format");
305 format = gst_video_format_from_string (str);
306 if (format == GST_VIDEO_FORMAT_UNKNOWN)
307 return g_strdup (_("Uncompressed video"));
309 finfo = gst_video_format_get_info (format);
311 if (GST_VIDEO_FORMAT_INFO_IS_GRAY (finfo)) {
312 ret = g_strdup (_("Uncompressed gray"));
313 } else if (GST_VIDEO_FORMAT_INFO_IS_YUV (finfo)) {
318 w_sub = GST_VIDEO_FORMAT_INFO_W_SUB (finfo, 1);
319 h_sub = GST_VIDEO_FORMAT_INFO_H_SUB (finfo, 1);
321 if (GST_VIDEO_FORMAT_INFO_N_PLANES (finfo) == 1) {
327 if (w_sub == 1 && h_sub == 1) {
329 } else if (w_sub == 2 && h_sub == 1) {
331 } else if (w_sub == 2 && h_sub == 2) {
333 } else if (w_sub == 4 && h_sub == 1) {
338 ret = g_strdup_printf (_("Uncompressed %s YUV %s"), layout, subs);
339 } else if (GST_VIDEO_FORMAT_INFO_IS_RGB (finfo)) {
340 gboolean alpha, palette;
343 alpha = GST_VIDEO_FORMAT_INFO_HAS_ALPHA (finfo);
344 palette = GST_VIDEO_FORMAT_INFO_HAS_PALETTE (finfo);
345 bits = GST_VIDEO_FORMAT_INFO_BITS (finfo);
347 ret = g_strdup_printf (_("Uncompressed %s%d-bit %s"),
348 palette ? "palettized " : "", bits, alpha ? "RGBA" : "RGB");
350 ret = g_strdup (_("Uncompressed video"));
353 } else if (strcmp (info->type, "video/x-h263") == 0) {
354 const gchar *variant, *ret;
356 variant = gst_structure_get_string (s, "variant");
359 else if (strcmp (variant, "itu") == 0)
360 ret = "ITU H.26n"; /* why not ITU H.263? (tpm) */
361 else if (strcmp (variant, "lead") == 0)
363 else if (strcmp (variant, "microsoft") == 0)
364 ret = "Microsoft H.263";
365 else if (strcmp (variant, "vdolive") == 0)
367 else if (strcmp (variant, "vivo") == 0)
369 else if (strcmp (variant, "xirlink") == 0)
370 ret = "Xirlink H.263";
372 GST_WARNING ("Unknown H263 variant '%s'", variant);
375 return g_strdup (ret);
376 } else if (strcmp (info->type, "video/x-h264") == 0) {
377 const gchar *variant, *ret;
379 variant = gst_structure_get_string (s, "variant");
382 else if (strcmp (variant, "itu") == 0)
384 else if (strcmp (variant, "videosoft") == 0)
385 ret = "Videosoft H.264";
386 else if (strcmp (variant, "lead") == 0)
389 GST_WARNING ("Unknown H264 variant '%s'", variant);
392 return g_strdup (ret);
393 } else if (strcmp (info->type, "video/x-divx") == 0) {
396 if (!gst_structure_get_int (s, "divxversion", &ver) || ver <= 2) {
397 GST_WARNING ("Unexpected DivX version in %" GST_PTR_FORMAT, caps);
398 return g_strdup ("DivX MPEG-4");
400 return g_strdup_printf (_("DivX MPEG-4 Version %d"), ver);
401 } else if (strcmp (info->type, "video/x-msmpeg") == 0) {
404 if (!gst_structure_get_int (s, "msmpegversion", &ver) ||
405 ver < 40 || ver > 49) {
406 GST_WARNING ("Unexpected msmpegversion in %" GST_PTR_FORMAT, caps);
407 return g_strdup ("Microsoft MPEG-4 4.x");
409 return g_strdup_printf ("Microsoft MPEG-4 4.%d", ver % 10);
410 } else if (strcmp (info->type, "video/x-truemotion") == 0) {
413 gst_structure_get_int (s, "trueversion", &ver);
416 return g_strdup_printf ("Duck TrueMotion 1");
418 return g_strdup_printf ("TrueMotion 2.0");
420 GST_WARNING ("Unexpected trueversion in %" GST_PTR_FORMAT, caps);
423 return g_strdup_printf ("TrueMotion");
424 } else if (strcmp (info->type, "video/x-xan") == 0) {
427 if (!gst_structure_get_int (s, "wcversion", &ver) || ver < 1) {
428 GST_WARNING ("Unexpected wcversion in %" GST_PTR_FORMAT, caps);
429 return g_strdup ("Xan Wing Commander");
431 return g_strdup_printf ("Xan Wing Commander %u", ver);
432 } else if (strcmp (info->type, "video/x-indeo") == 0) {
435 if (!gst_structure_get_int (s, "indeoversion", &ver) || ver < 2) {
436 GST_WARNING ("Unexpected indeoversion in %" GST_PTR_FORMAT, caps);
437 return g_strdup ("Intel Indeo");
439 return g_strdup_printf ("Intel Indeo %u", ver);
440 } else if (strcmp (info->type, "audio/x-wma") == 0) {
443 gst_structure_get_int (s, "wmaversion", &ver);
448 return g_strdup_printf ("Windows Media Audio %d", ver + 6);
452 GST_WARNING ("Unexpected wmaversion in %" GST_PTR_FORMAT, caps);
453 return g_strdup ("Windows Media Audio");
454 } else if (strcmp (info->type, "video/x-wmv") == 0) {
457 gst_structure_get_int (s, "wmvversion", &ver);
462 return g_strdup_printf ("Windows Media Video %d", ver + 6);
466 GST_WARNING ("Unexpected wmvversion in %" GST_PTR_FORMAT, caps);
467 return g_strdup ("Windows Media Video");
468 } else if (strcmp (info->type, "audio/x-mace") == 0) {
471 gst_structure_get_int (s, "maceversion", &ver);
472 if (ver == 3 || ver == 6) {
473 return g_strdup_printf ("MACE-%d", ver);
475 GST_WARNING ("Unexpected maceversion in %" GST_PTR_FORMAT, caps);
476 return g_strdup ("MACE");
478 } else if (strcmp (info->type, "video/x-svq") == 0) {
481 gst_structure_get_int (s, "svqversion", &ver);
482 if (ver == 1 || ver == 3) {
483 return g_strdup_printf ("Sorensen Video %d", ver);
485 GST_WARNING ("Unexpected svqversion in %" GST_PTR_FORMAT, caps);
486 return g_strdup ("Sorensen Video");
488 } else if (strcmp (info->type, "video/x-asus") == 0) {
491 gst_structure_get_int (s, "asusversion", &ver);
492 if (ver == 1 || ver == 2) {
493 return g_strdup_printf ("Asus Video %d", ver);
495 GST_WARNING ("Unexpected asusversion in %" GST_PTR_FORMAT, caps);
496 return g_strdup ("Asus Video");
498 } else if (strcmp (info->type, "video/x-ati-vcr") == 0) {
501 gst_structure_get_int (s, "vcrversion", &ver);
502 if (ver == 1 || ver == 2) {
503 return g_strdup_printf ("ATI VCR %d", ver);
505 GST_WARNING ("Unexpected acrversion in %" GST_PTR_FORMAT, caps);
506 return g_strdup ("ATI VCR");
508 } else if (strcmp (info->type, "audio/x-adpcm") == 0) {
509 const GValue *layout_val;
511 layout_val = gst_structure_get_value (s, "layout");
512 if (layout_val != NULL && G_VALUE_HOLDS_STRING (layout_val)) {
515 if ((layout = g_value_get_string (layout_val))) {
516 gchar *layout_upper, *ret;
518 if (strcmp (layout, "swf") == 0)
519 return g_strdup ("Shockwave ADPCM");
520 if (strcmp (layout, "microsoft") == 0)
521 return g_strdup ("Microsoft ADPCM");
522 if (strcmp (layout, "quicktime") == 0)
523 return g_strdup ("Quicktime ADPCM");
524 if (strcmp (layout, "westwood") == 0)
525 return g_strdup ("Westwood ADPCM");
526 if (strcmp (layout, "yamaha") == 0)
527 return g_strdup ("Yamaha ADPCM");
528 /* FIXME: other layouts: sbpro2, sbpro3, sbpro4, ct, g726, ea,
529 * adx, xa, 4xm, smjpeg, dk4, dk3, dvi */
530 layout_upper = g_ascii_strup (layout, -1);
531 ret = g_strdup_printf ("%s ADPCM", layout_upper);
532 g_free (layout_upper);
536 return g_strdup ("ADPCM");
537 } else if (strcmp (info->type, "audio/mpeg") == 0) {
538 gint ver = 0, layer = 0;
540 gst_structure_get_int (s, "mpegversion", &ver);
544 gst_structure_get_int (s, "layer", &layer);
549 return g_strdup_printf ("MPEG-1 Layer %d (MP%d)", layer, layer);
553 GST_WARNING ("Unexpected MPEG-1 layer in %" GST_PTR_FORMAT, caps);
554 return g_strdup ("MPEG-1 Audio");
556 return g_strdup ("MPEG-4 AAC");
560 GST_WARNING ("Unexpected audio mpegversion in %" GST_PTR_FORMAT, caps);
561 return g_strdup ("MPEG Audio");
562 } else if (strcmp (info->type, "audio/x-pn-realaudio") == 0) {
565 gst_structure_get_int (s, "raversion", &ver);
568 return g_strdup ("RealAudio 14k4bps");
570 return g_strdup ("RealAudio 28k8bps");
572 return g_strdup ("RealAudio G2 (Cook)");
576 GST_WARNING ("Unexpected raversion in %" GST_PTR_FORMAT, caps);
577 return g_strdup ("RealAudio");
578 } else if (strcmp (info->type, "video/x-pn-realvideo") == 0) {
581 gst_structure_get_int (s, "rmversion", &ver);
584 return g_strdup ("RealVideo 1.0");
586 return g_strdup ("RealVideo 2.0");
588 return g_strdup ("RealVideo 3.0");
590 return g_strdup ("RealVideo 4.0");
594 GST_WARNING ("Unexpected rmversion in %" GST_PTR_FORMAT, caps);
595 return g_strdup ("RealVideo");
596 } else if (strcmp (info->type, "video/mpeg") == 0) {
600 if (!gst_structure_get_boolean (s, "systemstream", &sysstream) ||
601 !gst_structure_get_int (s, "mpegversion", &ver) || ver < 1 || ver > 4) {
602 GST_WARNING ("Missing fields in mpeg video caps %" GST_PTR_FORMAT, caps);
605 return g_strdup_printf ("MPEG-%d System Stream", ver);
607 return g_strdup_printf ("MPEG-%d Video", ver);
610 return g_strdup ("MPEG Video");
611 } else if (strcmp (info->type, "audio/x-raw") == 0) {
615 GstAudioFormat format;
616 const GstAudioFormatInfo *finfo;
618 str = gst_structure_get_string (s, "format");
619 format = gst_audio_format_from_string (str);
620 if (format == GST_AUDIO_FORMAT_UNKNOWN)
621 return g_strdup (_("Uncompressed audio"));
623 finfo = gst_audio_format_get_info (format);
624 depth = GST_AUDIO_FORMAT_INFO_DEPTH (finfo);
625 is_float = GST_AUDIO_FORMAT_INFO_IS_FLOAT (finfo);
627 return g_strdup_printf (_("Raw %d-bit %s audio"), depth,
628 is_float ? "floating-point" : "PCM");
633 /* returns format info structure, will return NULL for dynamic media types! */
634 static const FormatInfo *
635 find_format_info (const GstCaps * caps)
637 const GstStructure *s;
638 const gchar *media_type;
641 s = gst_caps_get_structure (caps, 0);
642 media_type = gst_structure_get_name (s);
644 for (i = 0; i < G_N_ELEMENTS (formats); ++i) {
645 if (strcmp (media_type, formats[i].type) == 0) {
646 gboolean is_sys = FALSE;
648 if ((formats[i].flags & FLAG_SYSTEMSTREAM) == 0)
651 /* this record should only be matched if the systemstream field is set */
652 if (gst_structure_get_boolean (s, "systemstream", &is_sys) && is_sys)
661 caps_are_rtp_caps (const GstCaps * caps, const gchar * media, gchar ** format)
663 const GstStructure *s;
666 g_assert (media != NULL && format != NULL);
668 s = gst_caps_get_structure (caps, 0);
669 if (!gst_structure_has_name (s, "application/x-rtp"))
671 if (!gst_structure_has_field_typed (s, "media", G_TYPE_STRING))
673 str = gst_structure_get_string (s, "media");
674 if (str == NULL || !g_str_equal (str, media))
676 str = gst_structure_get_string (s, "encoding-name");
677 if (str == NULL || *str == '\0')
680 if (strcmp (str, "X-ASF-PF") == 0) {
681 *format = g_strdup ("Windows Media");
682 } else if (g_str_has_prefix (str, "X-")) {
683 *format = g_strdup (str + 2);
685 *format = g_strdup (str);
692 * gst_pb_utils_get_source_description:
693 * @protocol: the protocol the source element needs to handle, e.g. "http"
695 * Returns a localised string describing a source element handling the protocol
696 * specified in @protocol, for use in error dialogs or other messages to be
697 * seen by the user. Should never return NULL unless @protocol is invalid.
699 * This function is mainly for internal use, applications would typically
700 * use gst_missing_plugin_message_get_description() to get a description of
701 * a missing feature from a missing-plugin message.
703 * Returns: a newly-allocated description string, or NULL on error. Free
704 * string with g_free() when not needed any longer.
707 gst_pb_utils_get_source_description (const gchar * protocol)
709 gchar *proto_uc, *ret;
711 g_return_val_if_fail (protocol != NULL, NULL);
713 if (strcmp (protocol, "cdda") == 0)
714 return g_strdup (_("Audio CD source"));
716 if (strcmp (protocol, "dvd") == 0)
717 return g_strdup (_("DVD source"));
719 if (strcmp (protocol, "rtsp") == 0)
720 return g_strdup (_("Real Time Streaming Protocol (RTSP) source"));
722 /* TODO: what about mmst, mmsu, mmsh? */
723 if (strcmp (protocol, "mms") == 0)
724 return g_strdup (_("Microsoft Media Server (MMS) protocol source"));
726 /* make protocol uppercase */
727 proto_uc = g_ascii_strup (protocol, -1);
729 /* TODO: find out how to add a comment for translators to the source code
730 * (and tell them to make the first letter uppercase below if they move
731 * the protocol to the middle or end of the string) */
732 ret = g_strdup_printf (_("%s protocol source"), proto_uc);
740 * gst_pb_utils_get_sink_description:
741 * @protocol: the protocol the sink element needs to handle, e.g. "http"
743 * Returns a localised string describing a sink element handling the protocol
744 * specified in @protocol, for use in error dialogs or other messages to be
745 * seen by the user. Should never return NULL unless @protocol is invalid.
747 * This function is mainly for internal use, applications would typically
748 * use gst_missing_plugin_message_get_description() to get a description of
749 * a missing feature from a missing-plugin message.
751 * Returns: a newly-allocated description string, or NULL on error. Free
752 * string with g_free() when not needed any longer.
755 gst_pb_utils_get_sink_description (const gchar * protocol)
757 gchar *proto_uc, *ret;
759 g_return_val_if_fail (protocol != NULL, NULL);
761 /* make protocol uppercase */
762 proto_uc = g_ascii_strup (protocol, -1);
764 /* TODO: find out how to add a comment for translators to the source code
765 * (and tell them to make the first letter uppercase below if they move
766 * the protocol to the middle or end of the string) */
767 ret = g_strdup_printf ("%s protocol sink", proto_uc);
775 * gst_pb_utils_get_decoder_description:
776 * @caps: the (fixed) #GstCaps for which an decoder description is needed
778 * Returns a localised string describing an decoder for the format specified
779 * in @caps, for use in error dialogs or other messages to be seen by the user.
780 * Should never return NULL unless @factory_name or @caps are invalid.
782 * This function is mainly for internal use, applications would typically
783 * use gst_missing_plugin_message_get_description() to get a description of
784 * a missing feature from a missing-plugin message.
786 * Returns: a newly-allocated description string, or NULL on error. Free
787 * string with g_free() when not needed any longer.
790 gst_pb_utils_get_decoder_description (const GstCaps * caps)
795 g_return_val_if_fail (caps != NULL, NULL);
796 g_return_val_if_fail (GST_IS_CAPS (caps), NULL);
798 tmp = copy_and_clean_caps (caps);
800 g_return_val_if_fail (gst_caps_is_fixed (tmp), NULL);
802 /* special-case RTP caps */
803 if (caps_are_rtp_caps (tmp, "video", &str)) {
804 ret = g_strdup_printf (_("%s video RTP depayloader"), str);
805 } else if (caps_are_rtp_caps (tmp, "audio", &str)) {
806 ret = g_strdup_printf (_("%s audio RTP depayloader"), str);
807 } else if (caps_are_rtp_caps (tmp, "application", &str)) {
808 ret = g_strdup_printf (_("%s RTP depayloader"), str);
810 const FormatInfo *info;
812 str = gst_pb_utils_get_codec_description (tmp);
813 info = find_format_info (tmp);
814 if (info != NULL && (info->flags & FLAG_CONTAINER) != 0) {
815 ret = g_strdup_printf (_("%s demuxer"), str);
817 ret = g_strdup_printf (_("%s decoder"), str);
822 gst_caps_unref (tmp);
828 * gst_pb_utils_get_encoder_description:
829 * @caps: the (fixed) #GstCaps for which an encoder description is needed
831 * Returns a localised string describing an encoder for the format specified
832 * in @caps, for use in error dialogs or other messages to be seen by the user.
833 * Should never return NULL unless @factory_name or @caps are invalid.
835 * This function is mainly for internal use, applications would typically
836 * use gst_missing_plugin_message_get_description() to get a description of
837 * a missing feature from a missing-plugin message.
839 * Returns: a newly-allocated description string, or NULL on error. Free
840 * string with g_free() when not needed any longer.
843 gst_pb_utils_get_encoder_description (const GstCaps * caps)
848 g_return_val_if_fail (caps != NULL, NULL);
849 g_return_val_if_fail (GST_IS_CAPS (caps), NULL);
850 tmp = copy_and_clean_caps (caps);
851 g_return_val_if_fail (gst_caps_is_fixed (tmp), NULL);
853 /* special-case RTP caps */
854 if (caps_are_rtp_caps (tmp, "video", &str)) {
855 ret = g_strdup_printf (_("%s video RTP payloader"), str);
856 } else if (caps_are_rtp_caps (tmp, "audio", &str)) {
857 ret = g_strdup_printf (_("%s audio RTP payloader"), str);
858 } else if (caps_are_rtp_caps (tmp, "application", &str)) {
859 ret = g_strdup_printf (_("%s RTP payloader"), str);
861 const FormatInfo *info;
863 str = gst_pb_utils_get_codec_description (tmp);
864 info = find_format_info (tmp);
865 if (info != NULL && (info->flags & FLAG_CONTAINER) != 0) {
866 ret = g_strdup_printf (_("%s muxer"), str);
868 ret = g_strdup_printf (_("%s encoder"), str);
873 gst_caps_unref (tmp);
879 * gst_pb_utils_get_element_description:
880 * @factory_name: the name of the element, e.g. "giosrc"
882 * Returns a localised string describing the given element, for use in
883 * error dialogs or other messages to be seen by the user. Should never
884 * return NULL unless @factory_name is invalid.
886 * This function is mainly for internal use, applications would typically
887 * use gst_missing_plugin_message_get_description() to get a description of
888 * a missing feature from a missing-plugin message.
890 * Returns: a newly-allocated description string, or NULL on error. Free
891 * string with g_free() when not needed any longer.
894 gst_pb_utils_get_element_description (const gchar * factory_name)
898 g_return_val_if_fail (factory_name != NULL, NULL);
900 ret = g_strdup_printf (_("GStreamer element %s"), factory_name);
901 if (ret && g_str_has_prefix (ret, factory_name))
902 *ret = g_ascii_toupper (*ret);
908 * gst_pb_utils_add_codec_description_to_tag_list:
909 * @taglist: a #GstTagList
910 * @codec_tag: a GStreamer codec tag such as #GST_TAG_AUDIO_CODEC,
911 * #GST_TAG_VIDEO_CODEC or #GST_TAG_CODEC
912 * @caps: the (fixed) #GstCaps for which a codec tag should be added.
914 * Adds a codec tag describing the format specified by @caps to @taglist.
916 * Returns: TRUE if a codec tag was added, FALSE otherwise.
919 gst_pb_utils_add_codec_description_to_tag_list (GstTagList * taglist,
920 const gchar * codec_tag, const GstCaps * caps)
922 const FormatInfo *info;
925 g_return_val_if_fail (taglist != NULL, FALSE);
926 g_return_val_if_fail (GST_IS_TAG_LIST (taglist), FALSE);
927 g_return_val_if_fail (codec_tag != NULL, FALSE);
928 g_return_val_if_fail (gst_tag_exists (codec_tag), FALSE);
929 g_return_val_if_fail (gst_tag_get_type (codec_tag) == G_TYPE_STRING, FALSE);
930 g_return_val_if_fail (caps != NULL, FALSE);
931 g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
933 info = find_format_info (caps);
937 desc = format_info_get_desc (info, caps);
938 gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, codec_tag, desc, NULL);
945 * gst_pb_utils_get_codec_description:
946 * @caps: the (fixed) #GstCaps for which an format description is needed
948 * Returns a localised (as far as this is possible) string describing the
949 * media format specified in @caps, for use in error dialogs or other messages
950 * to be seen by the user. Should never return NULL unless @caps is invalid.
952 * Also see the convenience function
953 * gst_pb_utils_add_codec_description_to_tag_list().
955 * Returns: a newly-allocated description string, or NULL on error. Free
956 * string with g_free() when not needed any longer.
959 gst_pb_utils_get_codec_description (const GstCaps * caps)
961 const FormatInfo *info;
965 g_return_val_if_fail (caps != NULL, NULL);
966 g_return_val_if_fail (GST_IS_CAPS (caps), NULL);
967 tmp = copy_and_clean_caps (caps);
968 g_return_val_if_fail (gst_caps_is_fixed (tmp), NULL);
970 info = find_format_info (tmp);
973 str = format_info_get_desc (info, tmp);
975 str = gst_caps_to_string (tmp);
977 /* cut off everything after the media type, if there is anything */
978 if ((comma = strchr (str, ','))) {
981 /* we could do something more elaborate here, like taking into account
982 * audio/, video/, image/ and application/ prefixes etc. */
985 GST_WARNING ("No description available for media type: %s", str);
987 gst_caps_unref (tmp);
994 gst_pb_utils_list_all (void)
998 g_print ("static const gchar *caps_strings[] = { ");
1000 for (i = 0; i < G_N_ELEMENTS (formats); ++i) {
1001 if (formats[i].desc != NULL)
1002 g_print (" \"%s\", ", formats[i].type);
1004 g_print ("\n#if 0\n");
1005 for (i = 0; i < G_N_ELEMENTS (formats); ++i) {
1006 if (formats[i].desc == NULL)
1007 g_print (" \"%s\", \n", formats[i].type);
1009 g_print ("\n#endif\n");