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1 /* GStreamer RIFF I/O
2  * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
3  *
4  * riff-media.h: RIFF-id to/from caps routines
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Library General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Library General Public License for more details.
15  *
16  * You should have received a copy of the GNU Library General Public
17  * License along with this library; if not, write to the
18  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
19  * Boston, MA 02110-1301, USA.
20  */
21 
22 #ifdef HAVE_CONFIG_H
23 #include "config.h"
24 #endif
25 
26 #include "riff-ids.h"
27 #include "riff-media.h"
28 
29 #include <gst/audio/audio.h>
30 
31 #include <string.h>
32 #include <math.h>
33 
34 GST_DEBUG_CATEGORY_EXTERN (riff_debug);
35 #define GST_CAT_DEFAULT riff_debug
36 
37 /**
38  * gst_riff_create_video_caps:
39  * @codec_fcc: fourCC codec for this codec.
40  * @strh: pointer to the strh stream header structure.
41  * @strf: pointer to the strf stream header structure, including any
42  *        data that is within the range of strf.size, but excluding any
43  *        additional data withint this chunk but outside strf.size.
44  * @strf_data: a #GstBuffer containing the additional data in the strf
45  *             chunk outside reach of strf.size. Usually a palette.
46  * @strd_data: a #GstBuffer containing the data in the strd stream header
47  *             chunk. Usually codec initialization data.
48  * @codec_name: if given, will be filled with a human-readable codec name.
49  */
50 
51 GstCaps *
gst_riff_create_video_caps(guint32 codec_fcc,gst_riff_strh * strh,gst_riff_strf_vids * strf,GstBuffer * strf_data,GstBuffer * strd_data,char ** codec_name)52 gst_riff_create_video_caps (guint32 codec_fcc,
53     gst_riff_strh * strh, gst_riff_strf_vids * strf,
54     GstBuffer * strf_data, GstBuffer * strd_data, char **codec_name)
55 {
56   GstCaps *caps = NULL;
57   GstBuffer *palette = NULL;
58 
59   GST_DEBUG ("video fourcc %" GST_FOURCC_FORMAT, GST_FOURCC_ARGS (codec_fcc));
60 
61   switch (codec_fcc) {
62     case GST_RIFF_DIB:         /* uncompressed RGB */
63     case GST_RIFF_rgb:
64     case GST_RIFF_RGB:
65     case GST_RIFF_RAW:
66     {
67       gint bpp = (strf && strf->bit_cnt != 0) ? strf->bit_cnt : 8;
68 
69       if (strf) {
70         if (bpp == 8) {
71           caps = gst_caps_new_simple ("video/x-raw",
72               "format", G_TYPE_STRING, "RGB8P", NULL);
73         } else if (bpp == 24) {
74           caps = gst_caps_new_simple ("video/x-raw",
75               "format", G_TYPE_STRING, "BGR", NULL);
76         } else if (bpp == 32) {
77           caps = gst_caps_new_simple ("video/x-raw",
78               "format", G_TYPE_STRING, "BGRx", NULL);
79         } else {
80           GST_WARNING ("Unhandled DIB RGB depth: %d", bpp);
81           return NULL;
82         }
83       } else {
84         /* for template */
85         caps =
86             gst_caps_from_string ("video/x-raw, format = (string) "
87             "{ RGB8P, BGR, BGRx }");
88       }
89 
90       palette = strf_data;
91       strf_data = NULL;
92       if (codec_name) {
93         if (bpp == 8)
94           *codec_name = g_strdup_printf ("Palettized %d-bit RGB", bpp);
95         else
96           *codec_name = g_strdup_printf ("%d-bit RGB", bpp);
97       }
98       break;
99     }
100 
101     case GST_MAKE_FOURCC ('G', 'R', 'E', 'Y'):
102     case GST_MAKE_FOURCC ('Y', '8', '0', '0'):
103     case GST_MAKE_FOURCC ('Y', '8', ' ', ' '):
104       caps = gst_caps_new_simple ("video/x-raw",
105           "format", G_TYPE_STRING, "GRAY8", NULL);
106       if (codec_name)
107         *codec_name = g_strdup ("Uncompressed 8-bit monochrome");
108       break;
109 
110     case GST_MAKE_FOURCC ('r', '2', '1', '0'):
111       caps = gst_caps_new_simple ("video/x-raw",
112           "format", G_TYPE_STRING, "r210", NULL);
113       if (codec_name)
114         *codec_name = g_strdup ("Uncompressed packed RGB 10-bit 4:4:4");
115       break;
116 
117     case GST_RIFF_I420:
118     case GST_RIFF_i420:
119     case GST_RIFF_IYUV:
120       caps = gst_caps_new_simple ("video/x-raw",
121           "format", G_TYPE_STRING, "I420", NULL);
122       if (codec_name)
123         *codec_name = g_strdup ("Uncompressed planar YUV 4:2:0");
124       break;
125 
126     case GST_RIFF_YUY2:
127     case GST_RIFF_yuy2:
128     case GST_MAKE_FOURCC ('Y', 'U', 'N', 'V'):
129     case GST_MAKE_FOURCC ('Y', 'U', 'Y', 'V'):
130       caps = gst_caps_new_simple ("video/x-raw",
131           "format", G_TYPE_STRING, "YUY2", NULL);
132       if (codec_name)
133         *codec_name = g_strdup ("Uncompressed packed YUV 4:2:2");
134       break;
135 
136     case GST_RIFF_YVU9:
137       caps = gst_caps_new_simple ("video/x-raw",
138           "format", G_TYPE_STRING, "YVU9", NULL);
139       if (codec_name)
140         *codec_name = g_strdup ("Uncompressed packed YVU 4:1:0");
141       break;
142 
143     case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'):
144     case GST_MAKE_FOURCC ('2', 'v', 'u', 'y'):
145     case GST_MAKE_FOURCC ('H', 'D', 'Y', 'C'):
146       caps = gst_caps_new_simple ("video/x-raw",
147           "format", G_TYPE_STRING, "UYVY", NULL);
148       if (codec_name)
149         *codec_name = g_strdup ("Uncompressed packed YUV 4:2:2");
150       break;
151 
152     case GST_RIFF_YV12:
153     case GST_RIFF_yv12:
154       caps = gst_caps_new_simple ("video/x-raw",
155           "format", G_TYPE_STRING, "YV12", NULL);
156       if (codec_name)
157         *codec_name = g_strdup ("Uncompressed packed YVU 4:2:2");
158       break;
159     case GST_MAKE_FOURCC ('v', '2', '1', '0'):
160       caps = gst_caps_new_simple ("video/x-raw",
161           "format", G_TYPE_STRING, "v210", NULL);
162       if (codec_name)
163         *codec_name = g_strdup ("Uncompressed packed 10-bit YUV 4:2:2");
164       break;
165 
166     case GST_RIFF_MJPG:        /* YUY2 MJPEG */
167     case GST_RIFF_mJPG:
168     case GST_MAKE_FOURCC ('A', 'V', 'R', 'n'):
169     case GST_RIFF_IJPG:
170     case GST_MAKE_FOURCC ('i', 'j', 'p', 'g'):
171     case GST_RIFF_DMB1:
172     case GST_RIFF_dmb1:
173     case GST_MAKE_FOURCC ('A', 'C', 'D', 'V'):
174     case GST_MAKE_FOURCC ('Q', 'I', 'V', 'G'):
175       caps = gst_caps_new_empty_simple ("image/jpeg");
176       if (codec_name)
177         *codec_name = g_strdup ("Motion JPEG");
178       break;
179 
180     case GST_RIFF_JPEG:        /* generic (mostly RGB) MJPEG */
181     case GST_RIFF_jpeg:
182     case GST_MAKE_FOURCC ('j', 'p', 'e', 'g'): /* generic (mostly RGB) MJPEG */
183       caps = gst_caps_new_empty_simple ("image/jpeg");
184       if (codec_name)
185         *codec_name = g_strdup ("JPEG Still Image");
186       break;
187 
188     case GST_MAKE_FOURCC ('P', 'I', 'X', 'L'): /* Miro/Pinnacle fourccs */
189     case GST_RIFF_VIXL:        /* Miro/Pinnacle fourccs */
190     case GST_RIFF_vixl:
191       caps = gst_caps_new_empty_simple ("image/jpeg");
192       if (codec_name)
193         *codec_name = g_strdup ("Miro/Pinnacle Motion JPEG");
194       break;
195 
196     case GST_MAKE_FOURCC ('C', 'J', 'P', 'G'):
197       caps = gst_caps_new_empty_simple ("image/jpeg");
198       if (codec_name)
199         *codec_name = g_strdup ("Creative Webcam JPEG");
200       break;
201 
202     case GST_MAKE_FOURCC ('S', 'L', 'M', 'J'):
203       caps = gst_caps_new_empty_simple ("image/jpeg");
204       if (codec_name)
205         *codec_name = g_strdup ("SL Motion JPEG");
206       break;
207 
208     case GST_MAKE_FOURCC ('J', 'P', 'G', 'L'):
209       caps = gst_caps_new_empty_simple ("image/jpeg");
210       if (codec_name)
211         *codec_name = g_strdup ("Pegasus Lossless JPEG");
212       break;
213 
214     case GST_MAKE_FOURCC ('L', 'O', 'C', 'O'):
215       caps = gst_caps_new_empty_simple ("video/x-loco");
216       if (codec_name)
217         *codec_name = g_strdup ("LOCO Lossless");
218       break;
219 
220     case GST_MAKE_FOURCC ('S', 'P', '5', '3'):
221     case GST_MAKE_FOURCC ('S', 'P', '5', '4'):
222     case GST_MAKE_FOURCC ('S', 'P', '5', '5'):
223     case GST_MAKE_FOURCC ('S', 'P', '5', '6'):
224     case GST_MAKE_FOURCC ('S', 'P', '5', '7'):
225     case GST_MAKE_FOURCC ('S', 'P', '5', '8'):
226       caps = gst_caps_new_empty_simple ("video/sp5x");
227       if (codec_name)
228         *codec_name = g_strdup ("Sp5x-like JPEG");
229       break;
230 
231     case GST_MAKE_FOURCC ('Z', 'M', 'B', 'V'):
232       caps = gst_caps_new_empty_simple ("video/x-zmbv");
233       if (codec_name)
234         *codec_name = g_strdup ("Zip Motion Block video");
235       break;
236 
237     case GST_MAKE_FOURCC ('H', 'F', 'Y', 'U'):
238       caps = gst_caps_new_empty_simple ("video/x-huffyuv");
239       if (strf) {
240         gst_caps_set_simple (caps, "bpp",
241             G_TYPE_INT, (int) strf->bit_cnt, NULL);
242       }
243       if (codec_name)
244         *codec_name = g_strdup ("Huffman Lossless Codec");
245       break;
246 
247     case GST_MAKE_FOURCC ('M', 'P', 'E', 'G'):
248     case GST_MAKE_FOURCC ('M', 'P', 'G', 'I'):
249     case GST_MAKE_FOURCC ('m', 'p', 'g', '1'):
250     case GST_MAKE_FOURCC ('M', 'P', 'G', '1'):
251     case GST_MAKE_FOURCC ('P', 'I', 'M', '1'):
252     case GST_MAKE_FOURCC (0x01, 0x00, 0x00, 0x10):
253       caps = gst_caps_new_simple ("video/mpeg",
254           "systemstream", G_TYPE_BOOLEAN, FALSE,
255           "mpegversion", G_TYPE_INT, 1, NULL);
256       if (codec_name)
257         *codec_name = g_strdup ("MPEG-1 video");
258       break;
259 
260     case GST_MAKE_FOURCC ('M', 'P', 'G', '2'):
261     case GST_MAKE_FOURCC ('m', 'p', 'g', '2'):
262     case GST_MAKE_FOURCC ('P', 'I', 'M', '2'):
263     case GST_MAKE_FOURCC ('D', 'V', 'R', ' '):
264     case GST_MAKE_FOURCC (0x02, 0x00, 0x00, 0x10):
265       caps = gst_caps_new_simple ("video/mpeg",
266           "systemstream", G_TYPE_BOOLEAN, FALSE,
267           "mpegversion", G_TYPE_INT, 2, NULL);
268       if (codec_name)
269         *codec_name = g_strdup ("MPEG-2 video");
270       break;
271 
272     case GST_MAKE_FOURCC ('L', 'M', 'P', '2'):
273       caps = gst_caps_new_simple ("video/mpeg",
274           "systemstream", G_TYPE_BOOLEAN, FALSE,
275           "mpegversion", G_TYPE_INT, 2, NULL);
276       if (codec_name)
277         *codec_name = g_strdup ("Lead MPEG-2 video");
278       break;
279 
280     case GST_RIFF_H263:
281     case GST_RIFF_h263:
282     case GST_RIFF_i263:
283     case GST_MAKE_FOURCC ('U', '2', '6', '3'):
284     case GST_MAKE_FOURCC ('v', 'i', 'v', '1'):
285     case GST_MAKE_FOURCC ('T', '2', '6', '3'):
286       caps = gst_caps_new_simple ("video/x-h263",
287           "variant", G_TYPE_STRING, "itu", NULL);
288       if (codec_name)
289         *codec_name = g_strdup ("ITU H.26n");
290       break;
291 
292     case GST_RIFF_L263:
293       /* http://www.leadcodecs.com/Codecs/LEAD-H263.htm */
294       caps = gst_caps_new_simple ("video/x-h263",
295           "variant", G_TYPE_STRING, "lead", NULL);
296       if (codec_name)
297         *codec_name = g_strdup ("Lead H.263");
298       break;
299 
300     case GST_RIFF_M263:
301     case GST_RIFF_m263:
302       caps = gst_caps_new_simple ("video/x-h263",
303           "variant", G_TYPE_STRING, "microsoft", NULL);
304       if (codec_name)
305         *codec_name = g_strdup ("Microsoft H.263");
306       break;
307 
308     case GST_RIFF_VDOW:
309       caps = gst_caps_new_simple ("video/x-h263",
310           "variant", G_TYPE_STRING, "vdolive", NULL);
311       if (codec_name)
312         *codec_name = g_strdup ("VDOLive");
313       break;
314 
315     case GST_MAKE_FOURCC ('V', 'I', 'V', 'O'):
316       caps = gst_caps_new_simple ("video/x-h263",
317           "variant", G_TYPE_STRING, "vivo", NULL);
318       if (codec_name)
319         *codec_name = g_strdup ("Vivo H.263");
320       break;
321 
322     case GST_RIFF_x263:
323       caps = gst_caps_new_simple ("video/x-h263",
324           "variant", G_TYPE_STRING, "xirlink", NULL);
325       if (codec_name)
326         *codec_name = g_strdup ("Xirlink H.263");
327       break;
328 
329       /* apparently not standard H.263...? */
330     case GST_MAKE_FOURCC ('I', '2', '6', '3'):
331       caps = gst_caps_new_simple ("video/x-intel-h263",
332           "variant", G_TYPE_STRING, "intel", NULL);
333       if (codec_name)
334         *codec_name = g_strdup ("Intel H.263");
335       break;
336 
337     case GST_MAKE_FOURCC ('V', 'X', '1', 'K'):
338       caps = gst_caps_new_simple ("video/x-h263",
339           "variant", G_TYPE_STRING, "lucent", NULL);
340       if (codec_name)
341         *codec_name = g_strdup ("Lucent VX1000S H.263");
342       break;
343 
344     case GST_MAKE_FOURCC ('X', '2', '6', '4'):
345     case GST_MAKE_FOURCC ('x', '2', '6', '4'):
346     case GST_MAKE_FOURCC ('H', '2', '6', '4'):
347     case GST_MAKE_FOURCC ('h', '2', '6', '4'):
348     case GST_MAKE_FOURCC ('a', 'v', 'c', '1'):
349     case GST_MAKE_FOURCC ('A', 'V', 'C', '1'):
350       caps = gst_caps_new_simple ("video/x-h264",
351           "variant", G_TYPE_STRING, "itu", NULL);
352       if (codec_name)
353         *codec_name = g_strdup ("ITU H.264");
354       break;
355 
356     case GST_MAKE_FOURCC ('X', '2', '6', '5'):
357     case GST_MAKE_FOURCC ('x', '2', '6', '5'):
358     case GST_MAKE_FOURCC ('H', '2', '6', '5'):
359     case GST_MAKE_FOURCC ('h', '2', '6', '5'):
360     case GST_MAKE_FOURCC ('h', 'v', 'c', '1'):
361     case GST_MAKE_FOURCC ('H', 'V', 'C', '1'):
362       caps = gst_caps_new_empty_simple ("video/x-h265");
363       if (codec_name)
364         *codec_name = g_strdup ("H.265");
365       break;
366 
367     case GST_RIFF_VSSH:
368       caps = gst_caps_new_simple ("video/x-h264",
369           "variant", G_TYPE_STRING, "videosoft", NULL);
370       if (codec_name)
371         *codec_name = g_strdup ("VideoSoft H.264");
372       break;
373 
374     case GST_MAKE_FOURCC ('L', '2', '6', '4'):
375       /* http://www.leadcodecs.com/Codecs/LEAD-H264.htm */
376       caps = gst_caps_new_simple ("video/x-h264",
377           "variant", G_TYPE_STRING, "lead", NULL);
378       if (codec_name)
379         *codec_name = g_strdup ("Lead H.264");
380       break;
381 
382     case GST_MAKE_FOURCC ('S', 'E', 'D', 'G'):
383       caps = gst_caps_new_simple ("video/mpeg",
384           "mpegversion", G_TYPE_INT, 4,
385           "systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
386       if (codec_name)
387         *codec_name = g_strdup ("Samsung MPEG-4");
388       break;
389 
390     case GST_MAKE_FOURCC ('M', '4', 'C', 'C'):
391       caps = gst_caps_new_simple ("video/mpeg",
392           "mpegversion", G_TYPE_INT, 4,
393           "systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
394       if (codec_name)
395         *codec_name = g_strdup ("Divio MPEG-4");
396       break;
397 
398     case GST_RIFF_DIV3:
399     case GST_MAKE_FOURCC ('d', 'i', 'v', '3'):
400     case GST_MAKE_FOURCC ('D', 'V', 'X', '3'):
401     case GST_MAKE_FOURCC ('d', 'v', 'x', '3'):
402     case GST_MAKE_FOURCC ('D', 'I', 'V', '4'):
403     case GST_MAKE_FOURCC ('d', 'i', 'v', '4'):
404     case GST_MAKE_FOURCC ('D', 'I', 'V', '5'):
405     case GST_MAKE_FOURCC ('d', 'i', 'v', '5'):
406     case GST_MAKE_FOURCC ('D', 'I', 'V', '6'):
407     case GST_MAKE_FOURCC ('d', 'i', 'v', '6'):
408     case GST_MAKE_FOURCC ('M', 'P', 'G', '3'):
409     case GST_MAKE_FOURCC ('m', 'p', 'g', '3'):
410     case GST_MAKE_FOURCC ('c', 'o', 'l', '0'):
411     case GST_MAKE_FOURCC ('C', 'O', 'L', '0'):
412     case GST_MAKE_FOURCC ('c', 'o', 'l', '1'):
413     case GST_MAKE_FOURCC ('C', 'O', 'L', '1'):
414     case GST_MAKE_FOURCC ('A', 'P', '4', '1'):
415       caps = gst_caps_new_simple ("video/x-divx",
416           "divxversion", G_TYPE_INT, 3, NULL);
417       if (codec_name)
418         *codec_name = g_strdup ("DivX MS-MPEG-4 Version 3");
419       break;
420 
421     case GST_MAKE_FOURCC ('d', 'i', 'v', 'x'):
422     case GST_MAKE_FOURCC ('D', 'I', 'V', 'X'):
423       caps = gst_caps_new_simple ("video/x-divx",
424           "divxversion", G_TYPE_INT, 4, NULL);
425       if (codec_name)
426         *codec_name = g_strdup ("DivX MPEG-4 Version 4");
427       break;
428 
429     case GST_MAKE_FOURCC ('B', 'L', 'Z', '0'):
430       caps = gst_caps_new_simple ("video/x-divx",
431           "divxversion", G_TYPE_INT, 4, NULL);
432       if (codec_name)
433         *codec_name = g_strdup ("Blizzard DivX");
434       break;
435 
436     case GST_MAKE_FOURCC ('D', 'X', '5', '0'):
437       caps = gst_caps_new_simple ("video/x-divx",
438           "divxversion", G_TYPE_INT, 5, NULL);
439       if (codec_name)
440         *codec_name = g_strdup ("DivX MPEG-4 Version 5");
441       break;
442 
443     case GST_MAKE_FOURCC ('M', 'P', 'G', '4'):
444     case GST_MAKE_FOURCC ('M', 'P', '4', '1'):
445     case GST_MAKE_FOURCC ('m', 'p', '4', '1'):
446       caps = gst_caps_new_simple ("video/x-msmpeg",
447           "msmpegversion", G_TYPE_INT, 41, NULL);
448       if (codec_name)
449         *codec_name = g_strdup ("Microsoft MPEG-4 4.1");
450       break;
451 
452     case GST_MAKE_FOURCC ('m', 'p', '4', '2'):
453     case GST_MAKE_FOURCC ('M', 'P', '4', '2'):
454       caps = gst_caps_new_simple ("video/x-msmpeg",
455           "msmpegversion", G_TYPE_INT, 42, NULL);
456       if (codec_name)
457         *codec_name = g_strdup ("Microsoft MPEG-4 4.2");
458       break;
459 
460     case GST_MAKE_FOURCC ('m', 'p', '4', '3'):
461     case GST_MAKE_FOURCC ('M', 'P', '4', '3'):
462       caps = gst_caps_new_simple ("video/x-msmpeg",
463           "msmpegversion", G_TYPE_INT, 43, NULL);
464       if (codec_name)
465         *codec_name = g_strdup ("Microsoft MPEG-4 4.3");
466       break;
467 
468     case GST_MAKE_FOURCC ('M', 'P', '4', 'S'):
469     case GST_MAKE_FOURCC ('M', '4', 'S', '2'):
470       caps = gst_caps_new_simple ("video/mpeg",
471           "mpegversion", G_TYPE_INT, 4,
472           "systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
473       if (codec_name)
474         *codec_name = g_strdup ("Microsoft ISO MPEG-4 1.1");
475       break;
476 
477     case GST_MAKE_FOURCC ('F', 'M', 'P', '4'):
478     case GST_MAKE_FOURCC ('U', 'M', 'P', '4'):
479     case GST_MAKE_FOURCC ('F', 'F', 'D', 'S'):
480       caps = gst_caps_new_simple ("video/mpeg",
481           "mpegversion", G_TYPE_INT, 4,
482           "systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
483       if (codec_name)
484         *codec_name = g_strdup ("FFmpeg MPEG-4");
485       break;
486 
487     case GST_MAKE_FOURCC ('3', 'I', 'V', '1'):
488     case GST_MAKE_FOURCC ('3', 'I', 'V', '2'):
489     case GST_MAKE_FOURCC ('X', 'V', 'I', 'D'):
490     case GST_MAKE_FOURCC ('x', 'v', 'i', 'd'):
491     case GST_MAKE_FOURCC ('E', 'M', '4', 'A'):
492     case GST_MAKE_FOURCC ('E', 'P', 'V', 'H'):
493     case GST_MAKE_FOURCC ('F', 'V', 'F', 'W'):
494     case GST_MAKE_FOURCC ('I', 'N', 'M', 'C'):
495     case GST_MAKE_FOURCC ('D', 'I', 'G', 'I'):
496     case GST_MAKE_FOURCC ('D', 'M', '2', 'K'):
497     case GST_MAKE_FOURCC ('D', 'C', 'O', 'D'):
498     case GST_MAKE_FOURCC ('M', 'V', 'X', 'M'):
499     case GST_MAKE_FOURCC ('P', 'M', '4', 'V'):
500     case GST_MAKE_FOURCC ('S', 'M', 'P', '4'):
501     case GST_MAKE_FOURCC ('D', 'X', 'G', 'M'):
502     case GST_MAKE_FOURCC ('V', 'I', 'D', 'M'):
503     case GST_MAKE_FOURCC ('M', '4', 'T', '3'):
504     case GST_MAKE_FOURCC ('G', 'E', 'O', 'X'):
505     case GST_MAKE_FOURCC ('M', 'P', '4', 'V'):
506     case GST_MAKE_FOURCC ('m', 'p', '4', 'v'):
507     case GST_MAKE_FOURCC ('R', 'M', 'P', '4'):
508       caps = gst_caps_new_simple ("video/mpeg",
509           "mpegversion", G_TYPE_INT, 4,
510           "systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
511       if (codec_name)
512         *codec_name = g_strdup ("MPEG-4");
513       break;
514 
515     case GST_MAKE_FOURCC ('3', 'i', 'v', 'd'):
516     case GST_MAKE_FOURCC ('3', 'I', 'V', 'D'):
517       caps = gst_caps_new_simple ("video/x-msmpeg",
518           "msmpegversion", G_TYPE_INT, 43, NULL);
519       if (codec_name)
520         *codec_name = g_strdup ("Microsoft MPEG-4 4.3");        /* FIXME? */
521       break;
522 
523     case GST_MAKE_FOURCC ('C', 'F', 'H', 'D'):
524       caps = gst_caps_new_empty_simple ("video/x-cineform");
525       if (codec_name)
526         *codec_name = g_strdup ("CineForm");
527       break;
528 
529     case GST_MAKE_FOURCC ('D', 'V', 'S', 'D'):
530     case GST_MAKE_FOURCC ('d', 'v', 's', 'd'):
531     case GST_MAKE_FOURCC ('d', 'v', 'c', ' '):
532     case GST_MAKE_FOURCC ('d', 'v', '2', '5'):
533       caps = gst_caps_new_simple ("video/x-dv",
534           "systemstream", G_TYPE_BOOLEAN, FALSE,
535           "dvversion", G_TYPE_INT, 25, NULL);
536       if (codec_name)
537         *codec_name = g_strdup ("Generic DV");
538       break;
539 
540     case GST_MAKE_FOURCC ('C', 'D', 'V', 'C'):
541     case GST_MAKE_FOURCC ('c', 'd', 'v', 'c'):
542       caps = gst_caps_new_simple ("video/x-dv",
543           "systemstream", G_TYPE_BOOLEAN, FALSE,
544           "dvversion", G_TYPE_INT, 25, NULL);
545       if (codec_name)
546         *codec_name = g_strdup ("Canopus DV");
547       break;
548 
549     case GST_MAKE_FOURCC ('D', 'V', '5', '0'):
550     case GST_MAKE_FOURCC ('d', 'v', '5', '0'):
551       caps = gst_caps_new_simple ("video/x-dv",
552           "systemstream", G_TYPE_BOOLEAN, FALSE,
553           "dvversion", G_TYPE_INT, 50, NULL);
554       if (codec_name)
555         *codec_name = g_strdup ("DVCPro50 Video");
556       break;
557 
558     case GST_MAKE_FOURCC ('M', 'S', 'S', '1'):
559       caps = gst_caps_new_simple ("video/x-wmv",
560           "wmvversion", G_TYPE_INT, 1, "format", G_TYPE_STRING, "MSS1", NULL);
561       if (codec_name)
562         *codec_name = g_strdup ("Microsoft Windows Media 7 Screen");
563       break;
564 
565     case GST_MAKE_FOURCC ('M', 'S', 'S', '2'):
566       caps = gst_caps_new_simple ("video/x-wmv",
567           "wmvversion", G_TYPE_INT, 3, "format", G_TYPE_STRING, "MSS2", NULL);
568       if (codec_name)
569         *codec_name = g_strdup ("Microsoft Windows Media 9 Screen");
570       break;
571 
572     case GST_MAKE_FOURCC ('W', 'M', 'V', '1'):
573       caps = gst_caps_new_simple ("video/x-wmv",
574           "wmvversion", G_TYPE_INT, 1, NULL);
575       if (codec_name)
576         *codec_name = g_strdup ("Microsoft Windows Media 7");
577       break;
578 
579     case GST_MAKE_FOURCC ('W', 'M', 'V', '2'):
580       caps = gst_caps_new_simple ("video/x-wmv",
581           "wmvversion", G_TYPE_INT, 2, NULL);
582       if (codec_name)
583         *codec_name = g_strdup ("Microsoft Windows Media 8");
584       break;
585 
586     case GST_MAKE_FOURCC ('W', 'M', 'V', '3'):
587       caps = gst_caps_new_simple ("video/x-wmv",
588           "wmvversion", G_TYPE_INT, 3, "format", G_TYPE_STRING, "WMV3", NULL);
589       if (codec_name)
590         *codec_name = g_strdup ("Microsoft Windows Media 9");
591       break;
592 
593     case GST_MAKE_FOURCC ('W', 'M', 'V', 'A'):
594       caps = gst_caps_new_simple ("video/x-wmv",
595           "wmvversion", G_TYPE_INT, 3, "format", G_TYPE_STRING, "WMVA", NULL);
596       if (codec_name)
597         *codec_name = g_strdup ("Microsoft Windows Media Advanced Profile");
598       break;
599 
600     case GST_MAKE_FOURCC ('W', 'V', 'C', '1'):
601       caps = gst_caps_new_simple ("video/x-wmv",
602           "wmvversion", G_TYPE_INT, 3, "format", G_TYPE_STRING, "WVC1", NULL);
603       if (codec_name)
604         *codec_name = g_strdup ("Microsoft Windows Media VC-1");
605       break;
606 
607     case GST_RIFF_cvid:
608     case GST_RIFF_CVID:
609       caps = gst_caps_new_empty_simple ("video/x-cinepak");
610       if (codec_name)
611         *codec_name = g_strdup ("Cinepak video");
612       break;
613 
614     case GST_RIFF_FCCH_MSVC:
615     case GST_RIFF_FCCH_msvc:
616     case GST_RIFF_CRAM:
617     case GST_RIFF_cram:
618     case GST_RIFF_WHAM:
619     case GST_RIFF_wham:
620       caps = gst_caps_new_simple ("video/x-msvideocodec",
621           "msvideoversion", G_TYPE_INT, 1, NULL);
622       if (strf) {
623         gst_caps_set_simple (caps, "bpp",
624             G_TYPE_INT, (int) strf->bit_cnt, NULL);
625       }
626       if (codec_name)
627         *codec_name = g_strdup ("MS video v1");
628       palette = strf_data;
629       strf_data = NULL;
630       break;
631 
632     case GST_RIFF_FCCH_RLE:
633     case GST_MAKE_FOURCC ('m', 'r', 'l', 'e'):
634     case GST_MAKE_FOURCC (0x1, 0x0, 0x0, 0x0): /* why, why, why? */
635     case GST_MAKE_FOURCC (0x2, 0x0, 0x0, 0x0): /* why, why, why? */
636       caps = gst_caps_new_simple ("video/x-rle",
637           "layout", G_TYPE_STRING, "microsoft", NULL);
638       palette = strf_data;
639       strf_data = NULL;
640       if (strf) {
641         gst_caps_set_simple (caps,
642             "depth", G_TYPE_INT, (gint) strf->bit_cnt, NULL);
643       } else {
644         gst_caps_set_simple (caps, "depth", GST_TYPE_INT_RANGE, 1, 64, NULL);
645       }
646       if (codec_name)
647         *codec_name = g_strdup ("Microsoft RLE");
648       break;
649 
650     case GST_MAKE_FOURCC ('A', 'A', 'S', 'C'):
651       caps = gst_caps_new_empty_simple ("video/x-aasc");
652       if (codec_name)
653         *codec_name = g_strdup ("Autodesk Animator");
654       break;
655 
656     case GST_MAKE_FOURCC ('X', 'x', 'a', 'n'):
657       caps = gst_caps_new_simple ("video/x-xan",
658           "wcversion", G_TYPE_INT, 4, NULL);
659       if (codec_name)
660         *codec_name = g_strdup ("Xan Wing Commander 4");
661       break;
662 
663     case GST_RIFF_RT21:
664     case GST_RIFF_rt21:
665       caps = gst_caps_new_simple ("video/x-indeo",
666           "indeoversion", G_TYPE_INT, 2, NULL);
667       if (codec_name)
668         *codec_name = g_strdup ("Intel Video 2");
669       break;
670 
671     case GST_RIFF_IV31:
672     case GST_RIFF_IV32:
673     case GST_RIFF_iv31:
674     case GST_RIFF_iv32:
675       caps = gst_caps_new_simple ("video/x-indeo",
676           "indeoversion", G_TYPE_INT, 3, NULL);
677       if (codec_name)
678         *codec_name = g_strdup ("Intel Video 3");
679       break;
680 
681     case GST_RIFF_IV41:
682     case GST_RIFF_iv41:
683       caps = gst_caps_new_simple ("video/x-indeo",
684           "indeoversion", G_TYPE_INT, 4, NULL);
685       if (codec_name)
686         *codec_name = g_strdup ("Intel Video 4");
687       break;
688 
689     case GST_RIFF_IV50:
690       caps = gst_caps_new_simple ("video/x-indeo",
691           "indeoversion", G_TYPE_INT, 5, NULL);
692       if (codec_name)
693         *codec_name = g_strdup ("Intel Video 5");
694       break;
695 
696     case GST_MAKE_FOURCC ('M', 'S', 'Z', 'H'):
697       caps = gst_caps_new_empty_simple ("video/x-mszh");
698       if (codec_name)
699         *codec_name = g_strdup ("Lossless MSZH Video");
700       break;
701 
702     case GST_MAKE_FOURCC ('Z', 'L', 'I', 'B'):
703       caps = gst_caps_new_empty_simple ("video/x-zlib");
704       if (codec_name)
705         *codec_name = g_strdup ("Lossless zlib video");
706       break;
707 
708     case GST_MAKE_FOURCC ('C', 'L', 'J', 'R'):
709     case GST_MAKE_FOURCC ('c', 'l', 'j', 'r'):
710       caps = gst_caps_new_empty_simple ("video/x-cirrus-logic-accupak");
711       if (codec_name)
712         *codec_name = g_strdup ("Cirrus Logipak AccuPak");
713       break;
714 
715     case GST_RIFF_CYUV:
716     case GST_RIFF_cyuv:
717       caps = gst_caps_new_empty_simple ("video/x-compressed-yuv");
718       if (codec_name)
719         *codec_name = g_strdup ("CYUV Lossless");
720       break;
721 
722     case GST_MAKE_FOURCC ('D', 'U', 'C', 'K'):
723     case GST_MAKE_FOURCC ('P', 'V', 'E', 'Z'):
724       caps = gst_caps_new_simple ("video/x-truemotion",
725           "trueversion", G_TYPE_INT, 1, NULL);
726       if (codec_name)
727         *codec_name = g_strdup ("Duck Truemotion1");
728       break;
729 
730     case GST_MAKE_FOURCC ('T', 'M', '2', '0'):
731       caps = gst_caps_new_simple ("video/x-truemotion",
732           "trueversion", G_TYPE_INT, 2, NULL);
733       if (codec_name)
734         *codec_name = g_strdup ("TrueMotion 2.0");
735       break;
736 
737     case GST_MAKE_FOURCC ('V', 'P', '3', '0'):
738     case GST_MAKE_FOURCC ('v', 'p', '3', '0'):
739     case GST_MAKE_FOURCC ('V', 'P', '3', '1'):
740     case GST_MAKE_FOURCC ('v', 'p', '3', '1'):
741     case GST_MAKE_FOURCC ('V', 'P', '3', ' '):
742       caps = gst_caps_new_empty_simple ("video/x-vp3");
743       if (codec_name)
744         *codec_name = g_strdup ("VP3");
745       break;
746 
747     case GST_RIFF_ULTI:
748     case GST_RIFF_ulti:
749       caps = gst_caps_new_empty_simple ("video/x-ultimotion");
750       if (codec_name)
751         *codec_name = g_strdup ("IBM UltiMotion");
752       break;
753 
754       /* FIXME 2.0: Rename video/x-camtasia to video/x-tscc,version=1 */
755     case GST_MAKE_FOURCC ('T', 'S', 'C', 'C'):
756     case GST_MAKE_FOURCC ('t', 's', 'c', 'c'):{
757       if (strf) {
758         gint depth = (strf->bit_cnt != 0) ? (gint) strf->bit_cnt : 24;
759 
760         caps = gst_caps_new_simple ("video/x-camtasia", "depth", G_TYPE_INT,
761             depth, NULL);
762       } else {
763         /* template caps */
764         caps = gst_caps_new_empty_simple ("video/x-camtasia");
765       }
766       if (codec_name)
767         *codec_name = g_strdup ("TechSmith Camtasia");
768       break;
769     }
770 
771     case GST_MAKE_FOURCC ('T', 'S', 'C', '2'):
772     case GST_MAKE_FOURCC ('t', 's', 'c', '2'):{
773       caps =
774           gst_caps_new_simple ("video/x-tscc", "tsccversion", G_TYPE_INT, 2,
775           NULL);
776       if (codec_name)
777         *codec_name = g_strdup ("TechSmith Screen Capture 2");
778       break;
779     }
780 
781     case GST_MAKE_FOURCC ('C', 'S', 'C', 'D'):
782     {
783       if (strf) {
784         gint depth = (strf->bit_cnt != 0) ? (gint) strf->bit_cnt : 24;
785 
786         caps = gst_caps_new_simple ("video/x-camstudio", "depth", G_TYPE_INT,
787             depth, NULL);
788       } else {
789         /* template caps */
790         caps = gst_caps_new_empty_simple ("video/x-camstudio");
791       }
792       if (codec_name)
793         *codec_name = g_strdup ("Camstudio");
794       break;
795     }
796 
797     case GST_MAKE_FOURCC ('V', 'C', 'R', '1'):
798       caps = gst_caps_new_simple ("video/x-ati-vcr",
799           "vcrversion", G_TYPE_INT, 1, NULL);
800       if (codec_name)
801         *codec_name = g_strdup ("ATI VCR 1");
802       break;
803 
804     case GST_MAKE_FOURCC ('V', 'C', 'R', '2'):
805       caps = gst_caps_new_simple ("video/x-ati-vcr",
806           "vcrversion", G_TYPE_INT, 2, NULL);
807       if (codec_name)
808         *codec_name = g_strdup ("ATI VCR 2");
809       break;
810 
811     case GST_MAKE_FOURCC ('A', 'S', 'V', '1'):
812       caps = gst_caps_new_simple ("video/x-asus",
813           "asusversion", G_TYPE_INT, 1, NULL);
814       if (codec_name)
815         *codec_name = g_strdup ("Asus Video 1");
816       break;
817 
818     case GST_MAKE_FOURCC ('A', 'S', 'V', '2'):
819       caps = gst_caps_new_simple ("video/x-asus",
820           "asusversion", G_TYPE_INT, 2, NULL);
821       if (codec_name)
822         *codec_name = g_strdup ("Asus Video 2");
823       break;
824 
825     case GST_MAKE_FOURCC ('M', 'P', 'N', 'G'):
826     case GST_MAKE_FOURCC ('m', 'p', 'n', 'g'):
827     case GST_MAKE_FOURCC ('P', 'N', 'G', ' '):
828     case GST_MAKE_FOURCC ('p', 'n', 'g', ' '):
829       caps = gst_caps_new_empty_simple ("image/png");
830       if (codec_name)
831         *codec_name = g_strdup ("PNG image");
832       break;
833 
834     case GST_MAKE_FOURCC ('F', 'L', 'V', '1'):
835       caps = gst_caps_new_simple ("video/x-flash-video",
836           "flvversion", G_TYPE_INT, 1, NULL);
837       if (codec_name)
838         *codec_name = g_strdup ("Flash Video 1");
839       break;
840 
841     case GST_MAKE_FOURCC ('V', 'M', 'n', 'c'):
842       caps = gst_caps_new_simple ("video/x-vmnc",
843           "version", G_TYPE_INT, 1, NULL);
844       if (strf && strf->bit_cnt != 0)
845         gst_caps_set_simple (caps, "bpp", G_TYPE_INT, strf->bit_cnt, NULL);
846       if (codec_name)
847         *codec_name = g_strdup ("VMWare NC Video");
848       break;
849 
850     case GST_MAKE_FOURCC ('d', 'r', 'a', 'c'):
851       caps = gst_caps_new_empty_simple ("video/x-dirac");
852       if (codec_name)
853         *codec_name = g_strdup ("Dirac");
854       break;
855 
856     case GST_RIFF_rpza:
857     case GST_RIFF_azpr:
858     case GST_MAKE_FOURCC ('R', 'P', 'Z', 'A'):
859       caps = gst_caps_new_empty_simple ("video/x-apple-video");
860       if (codec_name)
861         *codec_name = g_strdup ("Apple Video (RPZA)");
862       break;
863 
864 
865     case GST_MAKE_FOURCC ('F', 'F', 'V', '1'):
866       caps = gst_caps_new_simple ("video/x-ffv",
867           "ffvversion", G_TYPE_INT, 1, NULL);
868       if (codec_name)
869         *codec_name = g_strdup ("FFmpeg lossless video codec");
870       break;
871 
872     case GST_MAKE_FOURCC ('K', 'M', 'V', 'C'):
873       caps = gst_caps_new_empty_simple ("video/x-kmvc");
874       if (codec_name)
875         *codec_name = g_strdup ("Karl Morton's video codec");
876       break;
877 
878     case GST_MAKE_FOURCC ('v', 'p', '5', '0'):
879     case GST_MAKE_FOURCC ('V', 'P', '5', '0'):
880       caps = gst_caps_new_empty_simple ("video/x-vp5");
881       if (codec_name)
882         *codec_name = g_strdup ("On2 VP5");
883       break;
884 
885     case GST_MAKE_FOURCC ('v', 'p', '6', '0'):
886     case GST_MAKE_FOURCC ('V', 'P', '6', '0'):
887     case GST_MAKE_FOURCC ('v', 'p', '6', '1'):
888     case GST_MAKE_FOURCC ('V', 'P', '6', '1'):
889     case GST_MAKE_FOURCC ('V', 'p', '6', '2'):
890     case GST_MAKE_FOURCC ('V', 'P', '6', '2'):
891       caps = gst_caps_new_empty_simple ("video/x-vp6");
892       if (codec_name)
893         *codec_name = g_strdup ("On2 VP6");
894       break;
895 
896     case GST_MAKE_FOURCC ('V', 'P', '6', 'F'):
897     case GST_MAKE_FOURCC ('v', 'p', '6', 'f'):
898     case GST_MAKE_FOURCC ('F', 'L', 'V', '4'):
899       caps = gst_caps_new_empty_simple ("video/x-vp6-flash");
900       if (codec_name)
901         *codec_name = g_strdup ("On2 VP6");
902       break;
903 
904     case GST_MAKE_FOURCC ('v', 'p', '7', '0'):
905     case GST_MAKE_FOURCC ('V', 'P', '7', '0'):
906       caps = gst_caps_new_empty_simple ("video/x-vp7");
907       if (codec_name)
908         *codec_name = g_strdup ("On2 VP7");
909       break;
910 
911     case GST_MAKE_FOURCC ('V', 'P', '8', '0'):
912       caps = gst_caps_new_empty_simple ("video/x-vp8");
913       if (codec_name)
914         *codec_name = g_strdup ("On2 VP8");
915       break;
916 
917     case GST_MAKE_FOURCC ('L', 'M', '2', '0'):
918       caps = gst_caps_new_empty_simple ("video/x-mimic");
919       if (codec_name)
920         *codec_name = g_strdup ("Mimic webcam");
921       break;
922 
923     case GST_MAKE_FOURCC ('T', 'H', 'E', 'O'):
924     case GST_MAKE_FOURCC ('t', 'h', 'e', 'o'):
925       caps = gst_caps_new_empty_simple ("video/x-theora");
926       if (codec_name)
927         *codec_name = g_strdup ("Theora video codec");
928 
929       break;
930 
931     case GST_MAKE_FOURCC ('F', 'P', 'S', '1'):
932       caps = gst_caps_new_empty_simple ("video/x-fraps");
933       if (codec_name)
934         *codec_name = g_strdup ("Fraps video");
935 
936       break;
937 
938     case GST_MAKE_FOURCC ('D', 'X', 'S', 'B'):
939     case GST_MAKE_FOURCC ('D', 'X', 'S', 'A'):
940       caps = gst_caps_new_empty_simple ("subpicture/x-xsub");
941       if (codec_name)
942         *codec_name = g_strdup ("XSUB subpicture stream");
943 
944       break;
945 
946     default:
947       GST_WARNING ("Unknown video fourcc %" GST_FOURCC_FORMAT,
948           GST_FOURCC_ARGS (codec_fcc));
949       return NULL;
950   }
951 
952   if (strh != NULL) {
953     gst_caps_set_simple (caps, "framerate", GST_TYPE_FRACTION,
954         strh->rate, strh->scale, NULL);
955   } else {
956     gst_caps_set_simple (caps,
957         "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
958   }
959 
960   if (strf != NULL) {
961     /* raw rgb data is stored topdown, but instead of inverting the buffer, */
962     /* some tools just negate the height field in the header (e.g. ffmpeg) */
963     gst_caps_set_simple (caps,
964         "width", G_TYPE_INT, strf->width,
965         "height", G_TYPE_INT, ABS ((gint) strf->height), NULL);
966   } else {
967     gst_caps_set_simple (caps,
968         "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
969         "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
970   }
971 
972   /* extradata */
973   if (strf_data || strd_data) {
974     GstBuffer *codec_data;
975 
976     codec_data = strf_data ? strf_data : strd_data;
977 
978     gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, codec_data, NULL);
979   }
980 
981   /* palette */
982   if (palette) {
983     GstBuffer *copy;
984     guint num_colors;
985     gsize size;
986 
987     if (strf != NULL)
988       num_colors = strf->num_colors;
989     else
990       num_colors = 256;
991 
992     size = gst_buffer_get_size (palette);
993 
994     if (size >= (num_colors * 4)) {
995       guint8 *pdata;
996 
997       /* palette is always at least 256*4 bytes */
998       pdata = g_malloc0 (MAX (size, 256 * 4));
999       gst_buffer_extract (palette, 0, pdata, size);
1000 
1001       if (G_BYTE_ORDER == G_BIG_ENDIAN) {
1002         guint8 *p = pdata;
1003         gint n;
1004 
1005         /* own endianness */
1006         for (n = 0; n < num_colors; n++) {
1007           GST_WRITE_UINT32_BE (p, GST_READ_UINT32_LE (p));
1008           p += sizeof (guint32);
1009         }
1010       }
1011 
1012       copy = gst_buffer_new_wrapped (pdata, size);
1013       gst_caps_set_simple (caps, "palette_data", GST_TYPE_BUFFER, copy, NULL);
1014       gst_buffer_unref (copy);
1015     } else {
1016       GST_WARNING ("Palette smaller than expected: broken file");
1017     }
1018   }
1019 
1020   return caps;
1021 }
1022 
1023 static const struct
1024 {
1025   const guint32 ms_mask;
1026   const GstAudioChannelPosition gst_pos;
1027 } layout_mapping[] = {
1028   {
1029   0x00001, GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT}, {
1030   0x00002, GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT}, {
1031   0x00004, GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER}, {
1032   0x00008, GST_AUDIO_CHANNEL_POSITION_LFE1}, {
1033   0x00010, GST_AUDIO_CHANNEL_POSITION_REAR_LEFT}, {
1034   0x00020, GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT}, {
1035   0x00040, GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER}, {
1036   0x00080, GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER}, {
1037   0x00100, GST_AUDIO_CHANNEL_POSITION_REAR_CENTER}, {
1038   0x00200, GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT}, {
1039   0x00400, GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT}, {
1040   0x00800, GST_AUDIO_CHANNEL_POSITION_TOP_CENTER}, {
1041   0x01000, GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_LEFT}, {
1042   0x02000, GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_CENTER}, {
1043   0x04000, GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_RIGHT}, {
1044   0x08000, GST_AUDIO_CHANNEL_POSITION_TOP_REAR_LEFT}, {
1045   0x10000, GST_AUDIO_CHANNEL_POSITION_TOP_REAR_CENTER}, {
1046   0x20000, GST_AUDIO_CHANNEL_POSITION_TOP_REAR_RIGHT}
1047 };
1048 
1049 #define MAX_CHANNEL_POSITIONS G_N_ELEMENTS (layout_mapping)
1050 
1051 static gboolean
gst_riff_wavext_add_channel_mask(GstCaps * caps,gint num_channels,guint32 layout,gint channel_reorder_map[18])1052 gst_riff_wavext_add_channel_mask (GstCaps * caps, gint num_channels,
1053     guint32 layout, gint channel_reorder_map[18])
1054 {
1055   gint i, p;
1056   guint64 channel_mask = 0;
1057   GstAudioChannelPosition *from, *to;
1058   gboolean ret = FALSE;
1059 
1060   if (num_channels < 1) {
1061     GST_DEBUG ("invalid number of channels: %d", num_channels);
1062     return FALSE;
1063   }
1064 
1065   from = g_new (GstAudioChannelPosition, num_channels);
1066   to = g_new (GstAudioChannelPosition, num_channels);
1067   p = 0;
1068   for (i = 0; i < MAX_CHANNEL_POSITIONS; ++i) {
1069     if ((layout & layout_mapping[i].ms_mask) != 0) {
1070       if (p >= num_channels) {
1071         GST_WARNING ("More bits set in the channel layout map than there "
1072             "are channels! Setting channel-mask to 0.");
1073         channel_mask = 0;
1074         break;
1075       }
1076       channel_mask |= G_GUINT64_CONSTANT (1) << layout_mapping[i].gst_pos;
1077       from[p] = layout_mapping[i].gst_pos;
1078       ++p;
1079     }
1080   }
1081 
1082   if (channel_mask > 0 && channel_reorder_map) {
1083     if (p != num_channels) {
1084       /* WAVEFORMATEXTENSIBLE allows to have more channels than bits in
1085        * the channel mask. We accept this, too, and hope that downstream
1086        * can handle this */
1087       GST_WARNING ("Partially unknown positions in channel mask");
1088       for (; p < num_channels; ++p)
1089         from[p] = GST_AUDIO_CHANNEL_POSITION_INVALID;
1090     }
1091     memcpy (to, from, sizeof (from[0]) * num_channels);
1092     if (!gst_audio_channel_positions_to_valid_order (to, num_channels))
1093       goto fail;
1094     if (!gst_audio_get_channel_reorder_map (num_channels, from, to,
1095             channel_reorder_map))
1096       goto fail;
1097   }
1098 
1099   gst_caps_set_simple (caps, "channel-mask", GST_TYPE_BITMASK, channel_mask,
1100       NULL);
1101 
1102   ret = TRUE;
1103 
1104 fail:
1105   g_free (from);
1106   g_free (to);
1107 
1108   return ret;
1109 }
1110 
1111 static gboolean
gst_riff_wave_add_default_channel_mask(GstCaps * caps,gint nchannels,gint channel_reorder_map[18])1112 gst_riff_wave_add_default_channel_mask (GstCaps * caps,
1113     gint nchannels, gint channel_reorder_map[18])
1114 {
1115   guint64 channel_mask = 0;
1116   static const gint reorder_maps[8][11] = {
1117     {0,},
1118     {0, 1},
1119     {-1, -1, -1},
1120     {0, 1, 2, 3},
1121     {0, 1, 3, 4, 2},
1122     {0, 1, 4, 5, 2, 3},
1123     {-1, -1, -1, -1, -1, -1, -1},
1124     {0, 1, 4, 5, 2, 3, 6, 7}
1125   };
1126 
1127   if (nchannels > 8) {
1128     GST_DEBUG ("invalid number of channels: %d", nchannels);
1129     return FALSE;
1130   }
1131 
1132   /* This uses the default channel mapping from ALSA which
1133    * is used in quite a few surround test files and seems to be
1134    * the defacto standard. The channel mapping from
1135    * WAVE_FORMAT_EXTENSIBLE doesn't seem to be used in normal
1136    * wav files like chan-id.wav.
1137    * http://bugzilla.gnome.org/show_bug.cgi?id=489010
1138    */
1139   switch (nchannels) {
1140     case 1:
1141       /* Mono => nothing */
1142       if (channel_reorder_map)
1143         channel_reorder_map[0] = 0;
1144       return TRUE;
1145     case 8:
1146       channel_mask |=
1147           G_GUINT64_CONSTANT (1) << GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT;
1148       channel_mask |=
1149           G_GUINT64_CONSTANT (1) << GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT;
1150       /* fall through */
1151     case 6:
1152       channel_mask |= G_GUINT64_CONSTANT (1) << GST_AUDIO_CHANNEL_POSITION_LFE1;
1153       /* fall through */
1154     case 5:
1155       channel_mask |=
1156           G_GUINT64_CONSTANT (1) << GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
1157       /* fall through */
1158     case 4:
1159       channel_mask |=
1160           G_GUINT64_CONSTANT (1) << GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
1161       channel_mask |=
1162           G_GUINT64_CONSTANT (1) << GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
1163       /* fall through */
1164     case 2:
1165       channel_mask |=
1166           G_GUINT64_CONSTANT (1) << GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
1167       channel_mask |=
1168           G_GUINT64_CONSTANT (1) << GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
1169       break;
1170     default:
1171       return FALSE;
1172   }
1173 
1174   if (channel_reorder_map)
1175     memcpy (channel_reorder_map, reorder_maps[nchannels - 1],
1176         sizeof (gint) * nchannels);
1177 
1178   gst_caps_set_simple (caps, "channel-mask", GST_TYPE_BITMASK, channel_mask,
1179       NULL);
1180 
1181   return TRUE;
1182 }
1183 
1184 static guint32
gst_riff_wavext_get_default_channel_mask(guint nchannels)1185 gst_riff_wavext_get_default_channel_mask (guint nchannels)
1186 {
1187   guint32 channel_mask = 0;
1188 
1189   /* Set the default channel mask for the given number of channels.
1190    * http://www.microsoft.com/whdc/device/audio/multichaud.mspx
1191    */
1192   switch (nchannels) {
1193     case 11:
1194       channel_mask |= 0x00400;
1195       channel_mask |= 0x00200;
1196     case 9:
1197       channel_mask |= 0x00100;
1198     case 8:
1199       channel_mask |= 0x00080;
1200       channel_mask |= 0x00040;
1201     case 6:
1202       channel_mask |= 0x00020;
1203       channel_mask |= 0x00010;
1204     case 4:
1205       channel_mask |= 0x00008;
1206     case 3:
1207       channel_mask |= 0x00004;
1208     case 2:
1209       channel_mask |= 0x00002;
1210       channel_mask |= 0x00001;
1211       break;
1212   }
1213 
1214   return channel_mask;
1215 }
1216 
1217 GstCaps *
gst_riff_create_audio_caps(guint16 codec_id,gst_riff_strh * strh,gst_riff_strf_auds * strf,GstBuffer * strf_data,GstBuffer * strd_data,char ** codec_name,gint channel_reorder_map[18])1218 gst_riff_create_audio_caps (guint16 codec_id,
1219     gst_riff_strh * strh, gst_riff_strf_auds * strf,
1220     GstBuffer * strf_data, GstBuffer * strd_data, char **codec_name,
1221     gint channel_reorder_map[18])
1222 {
1223   gboolean block_align = FALSE, rate_chan = TRUE;
1224   GstCaps *caps = NULL;
1225   gint i;
1226 
1227   if (channel_reorder_map)
1228     for (i = 0; i < 18; i++)
1229       channel_reorder_map[i] = -1;
1230 
1231   switch (codec_id) {
1232     case GST_RIFF_WAVE_FORMAT_PCM:     /* PCM */
1233       if (strf != NULL) {
1234         gint ba = strf->blockalign;
1235         gint ch = strf->channels;
1236         gint wd, ws;
1237         GstAudioFormat format;
1238 
1239         if (ba > (32 / 8) * ch) {
1240           GST_WARNING ("Invalid block align: %d > %d", ba, (32 / 8) * ch);
1241           wd = GST_ROUND_UP_8 (strf->bits_per_sample);
1242         } else if (ba != 0) {
1243           /* If we have an empty blockalign, we take the width contained in
1244            * strf->bits_per_sample */
1245           wd = ba * 8 / ch;
1246         } else {
1247           wd = GST_ROUND_UP_8 (strf->bits_per_sample);
1248         }
1249 
1250         if (strf->bits_per_sample > 32) {
1251           GST_WARNING ("invalid depth (%d) of pcm audio, overwriting.",
1252               strf->bits_per_sample);
1253           strf->bits_per_sample = wd;
1254         }
1255 
1256         /* in riff, the depth is stored in the size field but it just means that
1257          * the _least_ significant bits are cleared. We can therefore just play
1258          * the sample as if it had a depth == width */
1259         /* For reference, the actual depth is in strf->bits_per_sample */
1260         ws = wd;
1261 
1262         format =
1263             gst_audio_format_build_integer (wd != 8, G_LITTLE_ENDIAN, wd, ws);
1264         if (format == GST_AUDIO_FORMAT_UNKNOWN) {
1265           GST_WARNING ("Unsupported raw audio format with width %d", wd);
1266           return NULL;
1267         }
1268 
1269         caps = gst_caps_new_simple ("audio/x-raw",
1270             "format", G_TYPE_STRING, gst_audio_format_to_string (format),
1271             "layout", G_TYPE_STRING, "interleaved",
1272             "channels", G_TYPE_INT, ch, NULL);
1273 
1274         /* Add default channel layout. We know no default layout for more than
1275          * 8 channels. */
1276         if (ch > 8)
1277           GST_WARNING ("don't know default layout for %d channels", ch);
1278         else if (gst_riff_wave_add_default_channel_mask (caps, ch,
1279                 channel_reorder_map))
1280           GST_DEBUG ("using default channel layout for %d channels", ch);
1281         else
1282           GST_WARNING ("failed to add channel layout");
1283       } else {
1284         /* FIXME: this is pretty useless - we need fixed caps */
1285         caps = gst_caps_from_string ("audio/x-raw, "
1286             "format = (string) { S8, U8, S16LE, U16LE, S24LE, "
1287             "U24LE, S32LE, U32LE }, " "layout = (string) interleaved");
1288       }
1289       if (codec_name && strf)
1290         *codec_name = g_strdup_printf ("Uncompressed %d-bit PCM audio",
1291             strf->bits_per_sample);
1292       break;
1293 
1294     case GST_RIFF_WAVE_FORMAT_ADPCM:
1295       if (strf != NULL) {
1296         /* Many encoding tools create a wrong bitrate information in the header,
1297          * so either we calculate the bitrate or mark it as invalid as this
1298          * would probably confuse timing */
1299         strf->av_bps = 0;
1300         if (strf->channels != 0 && strf->rate != 0 && strf->blockalign != 0) {
1301           int spb = ((strf->blockalign - strf->channels * 7) / 2) * 2;
1302           strf->av_bps =
1303               gst_util_uint64_scale_int (strf->rate, strf->blockalign, spb);
1304           GST_DEBUG ("fixing av_bps to calculated value %d of MS ADPCM",
1305               strf->av_bps);
1306         }
1307       }
1308       caps = gst_caps_new_simple ("audio/x-adpcm",
1309           "layout", G_TYPE_STRING, "microsoft", NULL);
1310       if (codec_name)
1311         *codec_name = g_strdup ("ADPCM audio");
1312       block_align = TRUE;
1313       break;
1314 
1315     case GST_RIFF_WAVE_FORMAT_IEEE_FLOAT:
1316       if (strf != NULL) {
1317         gint ba = strf->blockalign;
1318         gint ch = strf->channels;
1319 
1320         if (ba > 0 && ch > 0 && (ba == (64 / 8) * ch || ba == (32 / 8) * ch)) {
1321           gint wd = ba * 8 / ch;
1322 
1323           caps = gst_caps_new_simple ("audio/x-raw",
1324               "format", G_TYPE_STRING, wd == 64 ? "F64LE" : "F32LE",
1325               "layout", G_TYPE_STRING, "interleaved",
1326               "channels", G_TYPE_INT, ch, NULL);
1327 
1328           /* Add default channel layout. We know no default layout for more than
1329            * 8 channels. */
1330           if (ch > 8)
1331             GST_WARNING ("don't know default layout for %d channels", ch);
1332           else if (gst_riff_wave_add_default_channel_mask (caps, ch,
1333                   channel_reorder_map))
1334             GST_DEBUG ("using default channel layout for %d channels", ch);
1335           else
1336             GST_WARNING ("failed to add channel layout");
1337         } else {
1338           GST_WARNING ("invalid block align %d or channel count %d", ba, ch);
1339           return NULL;
1340         }
1341       } else {
1342         /* FIXME: this is pretty useless - we need fixed caps */
1343         caps = gst_caps_from_string ("audio/x-raw, "
1344             "format = (string) { F32LE, F64LE }, "
1345             "layout = (string) interleaved");
1346       }
1347       if (codec_name && strf)
1348         *codec_name = g_strdup_printf ("Uncompressed %d-bit IEEE float audio",
1349             strf->bits_per_sample);
1350       break;
1351 
1352     case GST_RIFF_WAVE_FORMAT_IBM_CVSD:
1353       goto unknown;
1354 
1355     case GST_RIFF_WAVE_FORMAT_ALAW:
1356       if (strf != NULL) {
1357         if (strf->bits_per_sample != 8) {
1358           GST_WARNING ("invalid depth (%d) of alaw audio, overwriting.",
1359               strf->bits_per_sample);
1360           strf->bits_per_sample = 8;
1361           strf->blockalign = (strf->bits_per_sample * strf->channels) / 8;
1362           strf->av_bps = strf->blockalign * strf->rate;
1363         }
1364         if (strf->av_bps == 0 || strf->blockalign == 0) {
1365           GST_WARNING ("fixing av_bps (%d) and blockalign (%d) of alaw audio",
1366               strf->av_bps, strf->blockalign);
1367           strf->blockalign = (strf->bits_per_sample * strf->channels) / 8;
1368           strf->av_bps = strf->blockalign * strf->rate;
1369         }
1370       }
1371       caps = gst_caps_new_empty_simple ("audio/x-alaw");
1372       if (codec_name)
1373         *codec_name = g_strdup ("A-law audio");
1374       break;
1375 
1376     case GST_RIFF_WAVE_FORMAT_WMS:
1377       caps = gst_caps_new_empty_simple ("audio/x-wms");
1378       if (strf != NULL) {
1379         gst_caps_set_simple (caps,
1380             "bitrate", G_TYPE_INT, strf->av_bps * 8,
1381             "width", G_TYPE_INT, strf->bits_per_sample,
1382             "depth", G_TYPE_INT, strf->bits_per_sample, NULL);
1383       } else {
1384         gst_caps_set_simple (caps,
1385             "bitrate", GST_TYPE_INT_RANGE, 0, G_MAXINT, NULL);
1386       }
1387       if (codec_name)
1388         *codec_name = g_strdup ("Windows Media Audio Speech");
1389       block_align = TRUE;
1390       break;
1391 
1392     case GST_RIFF_WAVE_FORMAT_MULAW:
1393       if (strf != NULL) {
1394         if (strf->bits_per_sample != 8) {
1395           GST_WARNING ("invalid depth (%d) of mulaw audio, overwriting.",
1396               strf->bits_per_sample);
1397           strf->bits_per_sample = 8;
1398           strf->blockalign = (strf->bits_per_sample * strf->channels) / 8;
1399           strf->av_bps = strf->blockalign * strf->rate;
1400         }
1401         if (strf->av_bps == 0 || strf->blockalign == 0) {
1402           GST_WARNING ("fixing av_bps (%d) and blockalign (%d) of mulaw audio",
1403               strf->av_bps, strf->blockalign);
1404           strf->blockalign = (strf->bits_per_sample * strf->channels) / 8;
1405           strf->av_bps = strf->blockalign * strf->rate;
1406         }
1407       }
1408       caps = gst_caps_new_empty_simple ("audio/x-mulaw");
1409       if (codec_name)
1410         *codec_name = g_strdup ("Mu-law audio");
1411       break;
1412 
1413     case GST_RIFF_WAVE_FORMAT_OKI_ADPCM:
1414       goto unknown;
1415 
1416     case GST_RIFF_WAVE_FORMAT_DVI_ADPCM:
1417       if (strf != NULL) {
1418         /* Many encoding tools create a wrong bitrate information in the
1419          * header, so either we calculate the bitrate or mark it as invalid
1420          * as this would probably confuse timing */
1421         strf->av_bps = 0;
1422         if (strf->channels != 0 && strf->rate != 0 && strf->blockalign != 0) {
1423           int spb = ((strf->blockalign - strf->channels * 4) / 2) * 2;
1424           strf->av_bps =
1425               gst_util_uint64_scale_int (strf->rate, strf->blockalign, spb);
1426           GST_DEBUG ("fixing av_bps to calculated value %d of IMA DVI ADPCM",
1427               strf->av_bps);
1428         }
1429       }
1430       caps = gst_caps_new_simple ("audio/x-adpcm",
1431           "layout", G_TYPE_STRING, "dvi", NULL);
1432       if (codec_name)
1433         *codec_name = g_strdup ("DVI ADPCM audio");
1434       block_align = TRUE;
1435       break;
1436 
1437     case GST_RIFF_WAVE_FORMAT_ADPCM_G722:
1438       caps = gst_caps_new_empty_simple ("audio/G722");
1439       if (codec_name)
1440         *codec_name = g_strdup ("G722 audio");
1441       break;
1442 
1443     case GST_RIFF_WAVE_FORMAT_ITU_G726_ADPCM:
1444       if (strf != NULL) {
1445         gint bitrate;
1446         bitrate = 0;
1447         if (strf->av_bps == 2000 || strf->av_bps == 3000 || strf->av_bps == 4000
1448             || strf->av_bps == 5000) {
1449           strf->blockalign = strf->av_bps / 1000;
1450           bitrate = strf->av_bps * 8;
1451         } else if (strf->blockalign >= 2 && strf->blockalign <= 5) {
1452           bitrate = strf->blockalign * 8000;
1453         }
1454         if (bitrate > 0) {
1455           caps = gst_caps_new_simple ("audio/x-adpcm",
1456               "layout", G_TYPE_STRING, "g726", "bitrate", G_TYPE_INT, bitrate,
1457               NULL);
1458         } else {
1459           caps = gst_caps_new_simple ("audio/x-adpcm",
1460               "layout", G_TYPE_STRING, "g726", NULL);
1461         }
1462       } else {
1463         caps = gst_caps_new_simple ("audio/x-adpcm",
1464             "layout", G_TYPE_STRING, "g726", NULL);
1465       }
1466       if (codec_name)
1467         *codec_name = g_strdup ("G726 ADPCM audio");
1468       block_align = TRUE;
1469       break;
1470 
1471     case GST_RIFF_WAVE_FORMAT_DSP_TRUESPEECH:
1472       caps = gst_caps_new_empty_simple ("audio/x-truespeech");
1473       if (codec_name)
1474         *codec_name = g_strdup ("DSP Group TrueSpeech");
1475       break;
1476 
1477     case GST_RIFF_WAVE_FORMAT_GSM610:
1478     case GST_RIFF_WAVE_FORMAT_MSN:
1479       caps = gst_caps_new_empty_simple ("audio/ms-gsm");
1480       if (codec_name)
1481         *codec_name = g_strdup ("MS GSM audio");
1482       break;
1483 
1484     case GST_RIFF_WAVE_FORMAT_MPEGL12: /* mp1 or mp2 */
1485       caps = gst_caps_new_simple ("audio/mpeg",
1486           "mpegversion", G_TYPE_INT, 1, "layer", G_TYPE_INT, 2, NULL);
1487       if (codec_name)
1488         *codec_name = g_strdup ("MPEG-1 layer 2");
1489       break;
1490 
1491     case GST_RIFF_WAVE_FORMAT_MPEGL3:  /* mp3 */
1492       caps = gst_caps_new_simple ("audio/mpeg",
1493           "mpegversion", G_TYPE_INT, 1, "layer", G_TYPE_INT, 3, NULL);
1494       if (codec_name)
1495         *codec_name = g_strdup ("MPEG-1 layer 3");
1496       break;
1497 
1498     case GST_RIFF_WAVE_FORMAT_AMR_NB:  /* amr-nb */
1499       caps = gst_caps_new_empty_simple ("audio/AMR");
1500       if (codec_name)
1501         *codec_name = g_strdup ("AMR Narrow Band (NB)");
1502       break;
1503 
1504     case GST_RIFF_WAVE_FORMAT_AMR_WB:  /* amr-wb */
1505       caps = gst_caps_new_empty_simple ("audio/AMR-WB");
1506       if (codec_name)
1507         *codec_name = g_strdup ("AMR Wide Band (WB)");
1508       break;
1509 
1510     case GST_RIFF_WAVE_FORMAT_VORBIS1: /* ogg/vorbis mode 1 */
1511     case GST_RIFF_WAVE_FORMAT_VORBIS2: /* ogg/vorbis mode 2 */
1512     case GST_RIFF_WAVE_FORMAT_VORBIS3: /* ogg/vorbis mode 3 */
1513     case GST_RIFF_WAVE_FORMAT_VORBIS1PLUS:     /* ogg/vorbis mode 1+ */
1514     case GST_RIFF_WAVE_FORMAT_VORBIS2PLUS:     /* ogg/vorbis mode 2+ */
1515     case GST_RIFF_WAVE_FORMAT_VORBIS3PLUS:     /* ogg/vorbis mode 3+ */
1516       caps = gst_caps_new_empty_simple ("audio/x-vorbis");
1517       if (codec_name)
1518         *codec_name = g_strdup ("Vorbis");
1519       break;
1520 
1521     case GST_RIFF_WAVE_FORMAT_A52:
1522       caps = gst_caps_new_empty_simple ("audio/x-ac3");
1523       if (codec_name)
1524         *codec_name = g_strdup ("AC-3 audio");
1525       break;
1526     case GST_RIFF_WAVE_FORMAT_DTS:
1527       caps = gst_caps_new_empty_simple ("audio/x-dts");
1528       if (codec_name)
1529         *codec_name = g_strdup ("DTS audio");
1530       /* wavparse is not always able to specify rate/channels for DTS-in-wav */
1531       rate_chan = FALSE;
1532       break;
1533     case GST_RIFF_WAVE_FORMAT_AAC:
1534     case GST_RIFF_WAVE_FORMAT_AAC_AC:
1535     case GST_RIFF_WAVE_FORMAT_AAC_pm:
1536     {
1537       caps = gst_caps_new_simple ("audio/mpeg",
1538           "mpegversion", G_TYPE_INT, 4, NULL);
1539       if (codec_name)
1540         *codec_name = g_strdup ("MPEG-4 AAC audio");
1541       break;
1542     }
1543     case GST_RIFF_WAVE_FORMAT_WMAV1:
1544     case GST_RIFF_WAVE_FORMAT_WMAV2:
1545     case GST_RIFF_WAVE_FORMAT_WMAV3:
1546     case GST_RIFF_WAVE_FORMAT_WMAV3_L:
1547     {
1548       gint version = (codec_id - GST_RIFF_WAVE_FORMAT_WMAV1) + 1;
1549 
1550       block_align = TRUE;
1551 
1552       caps = gst_caps_new_simple ("audio/x-wma",
1553           "wmaversion", G_TYPE_INT, version, NULL);
1554 
1555       if (codec_name) {
1556         if (codec_id == GST_RIFF_WAVE_FORMAT_WMAV3_L)
1557           *codec_name = g_strdup ("WMA Lossless");
1558         else
1559           *codec_name = g_strdup_printf ("WMA Version %d", version + 6);
1560       }
1561 
1562       if (strf != NULL) {
1563         gst_caps_set_simple (caps,
1564             "bitrate", G_TYPE_INT, strf->av_bps * 8,
1565             "depth", G_TYPE_INT, strf->bits_per_sample, NULL);
1566       } else {
1567         gst_caps_set_simple (caps,
1568             "bitrate", GST_TYPE_INT_RANGE, 0, G_MAXINT, NULL);
1569       }
1570       break;
1571     }
1572     case GST_RIFF_WAVE_FORMAT_SONY_ATRAC3:
1573       caps = gst_caps_new_empty_simple ("audio/x-vnd.sony.atrac3");
1574       if (codec_name)
1575         *codec_name = g_strdup ("Sony ATRAC3");
1576       break;
1577 
1578     case GST_RIFF_WAVE_FORMAT_SIREN:
1579       caps = gst_caps_new_empty_simple ("audio/x-siren");
1580       if (codec_name)
1581         *codec_name = g_strdup ("Siren7");
1582       rate_chan = FALSE;
1583       break;
1584 
1585     case GST_RIFF_WAVE_FORMAT_ADPCM_IMA_DK4:
1586       caps =
1587           gst_caps_new_simple ("audio/x-adpcm", "layout", G_TYPE_STRING, "dk4",
1588           NULL);
1589       if (codec_name)
1590         *codec_name = g_strdup ("IMA/DK4 ADPCM");
1591       break;
1592     case GST_RIFF_WAVE_FORMAT_ADPCM_IMA_DK3:
1593       caps =
1594           gst_caps_new_simple ("audio/x-adpcm", "layout", G_TYPE_STRING, "dk3",
1595           NULL);
1596       if (codec_name)
1597         *codec_name = g_strdup ("IMA/DK3 ADPCM");
1598       break;
1599 
1600     case GST_RIFF_WAVE_FORMAT_ADPCM_IMA_WAV:
1601       caps =
1602           gst_caps_new_simple ("audio/x-adpcm", "layout", G_TYPE_STRING, "dvi",
1603           NULL);
1604       if (codec_name)
1605         *codec_name = g_strdup ("IMA/WAV ADPCM");
1606       break;
1607     case GST_RIFF_WAVE_FORMAT_EXTENSIBLE:{
1608       guint16 valid_bits_per_sample;
1609       guint32 channel_mask;
1610       guint32 subformat_guid[4];
1611       GstMapInfo info;
1612       gsize size;
1613 
1614       if (strf_data == NULL) {
1615         GST_WARNING ("WAVE_FORMAT_EXTENSIBLE but no strf_data buffer provided");
1616         return NULL;
1617       }
1618 
1619       /* should be at least 22 bytes */
1620       size = gst_buffer_get_size (strf_data);
1621 
1622       if (size < 22) {
1623         GST_WARNING ("WAVE_FORMAT_EXTENSIBLE data size is %" G_GSIZE_FORMAT
1624             " (expected: 22)", size);
1625         return NULL;
1626       }
1627 
1628       gst_buffer_map (strf_data, &info, GST_MAP_READ);
1629       valid_bits_per_sample = GST_READ_UINT16_LE (info.data);
1630       channel_mask = GST_READ_UINT32_LE (info.data + 2);
1631       subformat_guid[0] = GST_READ_UINT32_LE (info.data + 6);
1632       subformat_guid[1] = GST_READ_UINT32_LE (info.data + 10);
1633       subformat_guid[2] = GST_READ_UINT32_LE (info.data + 14);
1634       subformat_guid[3] = GST_READ_UINT32_LE (info.data + 18);
1635       gst_buffer_unmap (strf_data, &info);
1636 
1637       GST_DEBUG ("valid bps    = %u", valid_bits_per_sample);
1638       GST_DEBUG ("channel mask = 0x%08x", channel_mask);
1639       GST_DEBUG ("GUID         = %08x-%08x-%08x-%08x", subformat_guid[0],
1640           subformat_guid[1], subformat_guid[2], subformat_guid[3]);
1641 
1642       if (subformat_guid[1] == 0x00100000 &&
1643           subformat_guid[2] == 0xaa000080 && subformat_guid[3] == 0x719b3800) {
1644         if (subformat_guid[0] == 0x00000001) {
1645           GST_DEBUG ("PCM");
1646           if (strf != NULL && strf->blockalign != 0 && strf->channels != 0
1647               && strf->rate != 0) {
1648             gint ba = strf->blockalign;
1649             gint wd = ba * 8 / strf->channels;
1650             gint ws;
1651             GstAudioFormat format;
1652 
1653             /* in riff, the depth is stored in the size field but it just
1654              * means that the _least_ significant bits are cleared. We can
1655              * therefore just play the sample as if it had a depth == width */
1656             ws = wd;
1657 
1658             /* For reference, use this to get the actual depth:
1659              * ws = strf->bits_per_sample;
1660              * if (valid_bits_per_sample != 0)
1661              *   ws = valid_bits_per_sample; */
1662 
1663             format =
1664                 gst_audio_format_build_integer (wd != 8, G_LITTLE_ENDIAN, wd,
1665                 ws);
1666 
1667             caps = gst_caps_new_simple ("audio/x-raw",
1668                 "format", G_TYPE_STRING, gst_audio_format_to_string (format),
1669                 "layout", G_TYPE_STRING, "interleaved",
1670                 "channels", G_TYPE_INT, strf->channels,
1671                 "rate", G_TYPE_INT, strf->rate, NULL);
1672 
1673             if (codec_name) {
1674               *codec_name = g_strdup_printf ("Uncompressed %d-bit PCM audio",
1675                   strf->bits_per_sample);
1676             }
1677           }
1678         } else if (subformat_guid[0] == 0x00000003) {
1679           GST_DEBUG ("FLOAT");
1680           if (strf != NULL && strf->blockalign != 0 && strf->channels != 0
1681               && strf->rate != 0) {
1682             gint ba = strf->blockalign;
1683             gint wd = ba * 8 / strf->channels;
1684 
1685             caps = gst_caps_new_simple ("audio/x-raw",
1686                 "format", G_TYPE_STRING, wd == 32 ? "F32LE" : "F64LE",
1687                 "layout", G_TYPE_STRING, "interleaved",
1688                 "channels", G_TYPE_INT, strf->channels,
1689                 "rate", G_TYPE_INT, strf->rate, NULL);
1690 
1691             if (codec_name) {
1692               *codec_name =
1693                   g_strdup_printf ("Uncompressed %d-bit IEEE float audio",
1694                   strf->bits_per_sample);
1695             }
1696           }
1697         } else if (subformat_guid[0] == 0x0000006) {
1698           GST_DEBUG ("ALAW");
1699           if (strf != NULL) {
1700             if (strf->bits_per_sample != 8) {
1701               GST_WARNING ("invalid depth (%d) of alaw audio, overwriting.",
1702                   strf->bits_per_sample);
1703               strf->bits_per_sample = 8;
1704               strf->av_bps = 8;
1705               strf->blockalign = strf->av_bps * strf->channels;
1706             }
1707             if (strf->av_bps == 0 || strf->blockalign == 0) {
1708               GST_WARNING
1709                   ("fixing av_bps (%d) and blockalign (%d) of alaw audio",
1710                   strf->av_bps, strf->blockalign);
1711               strf->av_bps = strf->bits_per_sample;
1712               strf->blockalign = strf->av_bps * strf->channels;
1713             }
1714           }
1715           caps = gst_caps_new_empty_simple ("audio/x-alaw");
1716 
1717           if (codec_name)
1718             *codec_name = g_strdup ("A-law audio");
1719         } else if (subformat_guid[0] == 0x00000007) {
1720           GST_DEBUG ("MULAW");
1721           if (strf != NULL) {
1722             if (strf->bits_per_sample != 8) {
1723               GST_WARNING ("invalid depth (%d) of mulaw audio, overwriting.",
1724                   strf->bits_per_sample);
1725               strf->bits_per_sample = 8;
1726               strf->av_bps = 8;
1727               strf->blockalign = strf->av_bps * strf->channels;
1728             }
1729             if (strf->av_bps == 0 || strf->blockalign == 0) {
1730               GST_WARNING
1731                   ("fixing av_bps (%d) and blockalign (%d) of mulaw audio",
1732                   strf->av_bps, strf->blockalign);
1733               strf->av_bps = strf->bits_per_sample;
1734               strf->blockalign = strf->av_bps * strf->channels;
1735             }
1736           }
1737           caps = gst_caps_new_empty_simple ("audio/x-mulaw");
1738           if (codec_name)
1739             *codec_name = g_strdup ("Mu-law audio");
1740         } else if (subformat_guid[0] == 0x00000092) {
1741           GST_DEBUG ("FIXME: handle DOLBY AC3 SPDIF format");
1742           GST_DEBUG ("WAVE_FORMAT_EXTENSIBLE AC-3 SPDIF audio");
1743           caps = gst_caps_new_empty_simple ("audio/x-ac3");
1744           if (codec_name)
1745             *codec_name = g_strdup ("wavext AC-3 SPDIF audio");
1746         } else if ((subformat_guid[0] & 0xffff) ==
1747             GST_RIFF_WAVE_FORMAT_EXTENSIBLE) {
1748           GST_DEBUG ("WAVE_FORMAT_EXTENSIBLE nested");
1749         } else {
1750           /* recurse where no special consideration has yet to be identified
1751            * for the subformat guid */
1752           caps = gst_riff_create_audio_caps (subformat_guid[0], strh, strf,
1753               strf_data, strd_data, codec_name, channel_reorder_map);
1754           if (!codec_name)
1755             GST_DEBUG ("WAVE_FORMAT_EXTENSIBLE audio");
1756           if (caps) {
1757             if (codec_name) {
1758               gchar *tmp = *codec_name;
1759               GST_DEBUG ("WAVE_FORMAT_EXTENSIBLE %s", *codec_name);
1760               *codec_name = g_strjoin ("wavext ", tmp, NULL);
1761               g_free (tmp);
1762             }
1763             return caps;
1764           }
1765         }
1766       } else if (subformat_guid[0] == 0x6ba47966 &&
1767           subformat_guid[1] == 0x41783f83 &&
1768           subformat_guid[2] == 0xf0006596 && subformat_guid[3] == 0xe59262bf) {
1769         caps = gst_caps_new_empty_simple ("application/x-ogg-avi");
1770         if (codec_name)
1771           *codec_name = g_strdup ("Ogg-AVI");
1772       }
1773 
1774       if (caps == NULL) {
1775         GST_WARNING ("Unknown WAVE_FORMAT_EXTENSIBLE audio format");
1776         return NULL;
1777       }
1778 
1779       if (strf != NULL) {
1780         /* If channel_mask == 0 and channels > 1 let's
1781          * assume default layout as some wav files don't have the
1782          * channel mask set. Don't set the layout for 1 channel. */
1783         if (channel_mask == 0 && strf->channels > 1)
1784           channel_mask =
1785               gst_riff_wavext_get_default_channel_mask (strf->channels);
1786 
1787         if ((channel_mask != 0 || strf->channels > 1) &&
1788             !gst_riff_wavext_add_channel_mask (caps, strf->channels,
1789                 channel_mask, channel_reorder_map)) {
1790           GST_WARNING ("failed to add channel layout");
1791           gst_caps_unref (caps);
1792           caps = NULL;
1793         }
1794         rate_chan = FALSE;
1795       }
1796 
1797       break;
1798     }
1799       /* can anything decode these? pitfdll? */
1800     case GST_RIFF_WAVE_FORMAT_VOXWARE_AC8:
1801     case GST_RIFF_WAVE_FORMAT_VOXWARE_AC10:
1802     case GST_RIFF_WAVE_FORMAT_VOXWARE_AC16:
1803     case GST_RIFF_WAVE_FORMAT_VOXWARE_AC20:
1804     case GST_RIFF_WAVE_FORMAT_VOXWARE_METAVOICE:
1805     case GST_RIFF_WAVE_FORMAT_VOXWARE_METASOUND:
1806     case GST_RIFF_WAVE_FORMAT_VOXWARE_RT29HW:
1807     case GST_RIFF_WAVE_FORMAT_VOXWARE_VR12:
1808     case GST_RIFF_WAVE_FORMAT_VOXWARE_VR18:
1809     case GST_RIFF_WAVE_FORMAT_VOXWARE_TQ40:
1810     case GST_RIFF_WAVE_FORMAT_VOXWARE_TQ60:{
1811       caps = gst_caps_new_simple ("audio/x-voxware",
1812           "voxwaretype", G_TYPE_INT, (gint) codec_id, NULL);
1813       if (codec_name)
1814         *codec_name = g_strdup ("Voxware");
1815       break;
1816     }
1817     default:
1818     unknown:
1819       GST_WARNING ("Unknown audio tag 0x%04x", codec_id);
1820       return NULL;
1821   }
1822 
1823   if (strf != NULL) {
1824     if (rate_chan) {
1825       gst_caps_set_simple (caps,
1826           "rate", G_TYPE_INT, strf->rate,
1827           "channels", G_TYPE_INT, strf->channels, NULL);
1828     }
1829     if (block_align) {
1830       gst_caps_set_simple (caps,
1831           "block_align", G_TYPE_INT, strf->blockalign, NULL);
1832     }
1833   } else {
1834     if (block_align) {
1835       gst_caps_set_simple (caps,
1836           "block_align", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
1837     }
1838   }
1839 
1840   /* extradata */
1841   if (strf_data || strd_data) {
1842     gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER,
1843         strf_data ? strf_data : strd_data, NULL);
1844   }
1845 
1846   return caps;
1847 }
1848 
1849 GstCaps *
gst_riff_create_iavs_caps(guint32 codec_fcc,gst_riff_strh * strh,gst_riff_strf_iavs * strf,GstBuffer * init_data,GstBuffer * extra_data,char ** codec_name)1850 gst_riff_create_iavs_caps (guint32 codec_fcc,
1851     gst_riff_strh * strh, gst_riff_strf_iavs * strf,
1852     GstBuffer * init_data, GstBuffer * extra_data, char **codec_name)
1853 {
1854   GstCaps *caps = NULL;
1855 
1856   switch (codec_fcc) {
1857       /* is this correct? */
1858     case GST_MAKE_FOURCC ('D', 'V', 'S', 'D'):
1859     case GST_MAKE_FOURCC ('d', 'v', 's', 'd'):
1860       caps = gst_caps_new_simple ("video/x-dv",
1861           "systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
1862       if (codec_name)
1863         *codec_name = g_strdup ("Generic DV");
1864       break;
1865 
1866     default:
1867       GST_WARNING ("Unknown IAVS fourcc %" GST_FOURCC_FORMAT,
1868           GST_FOURCC_ARGS (codec_fcc));
1869       return NULL;
1870   }
1871 
1872   return caps;
1873 }
1874 
1875 /*
1876  * Functions below are for template caps. All is variable.
1877  */
1878 
1879 GstCaps *
gst_riff_create_video_template_caps(void)1880 gst_riff_create_video_template_caps (void)
1881 {
1882   static const guint32 tags[] = {
1883     GST_MAKE_FOURCC ('3', 'I', 'V', '1'),
1884     GST_MAKE_FOURCC ('A', 'S', 'V', '1'),
1885     GST_MAKE_FOURCC ('A', 'S', 'V', '2'),
1886     GST_MAKE_FOURCC ('C', 'F', 'H', 'D'),
1887     GST_MAKE_FOURCC ('C', 'L', 'J', 'R'),
1888     GST_MAKE_FOURCC ('C', 'S', 'C', 'D'),
1889     GST_MAKE_FOURCC ('C', 'Y', 'U', 'V'),
1890     GST_MAKE_FOURCC ('D', 'I', 'B', ' '),
1891     GST_MAKE_FOURCC ('D', 'I', 'V', '3'),
1892     GST_MAKE_FOURCC ('D', 'I', 'V', 'X'),
1893     GST_MAKE_FOURCC ('D', 'U', 'C', 'K'),
1894     GST_MAKE_FOURCC ('D', 'V', 'S', 'D'),
1895     GST_MAKE_FOURCC ('D', 'V', '5', '0'),
1896     GST_MAKE_FOURCC ('D', 'X', '5', '0'),
1897     GST_MAKE_FOURCC ('M', '4', 'C', 'C'),
1898     GST_MAKE_FOURCC ('F', 'L', 'V', '1'),
1899     GST_MAKE_FOURCC ('F', 'L', 'V', '4'),
1900     GST_MAKE_FOURCC ('H', '2', '6', '3'),
1901     GST_MAKE_FOURCC ('V', 'X', '1', 'K'),
1902     GST_MAKE_FOURCC ('H', '2', '6', '4'),
1903     GST_MAKE_FOURCC ('H', '2', '6', '5'),
1904     GST_MAKE_FOURCC ('H', 'F', 'Y', 'U'),
1905     GST_MAKE_FOURCC ('I', '2', '6', '3'),
1906     GST_MAKE_FOURCC ('I', '4', '2', '0'),
1907     GST_MAKE_FOURCC ('I', 'V', '3', '2'),
1908     GST_MAKE_FOURCC ('I', 'V', '4', '1'),
1909     GST_MAKE_FOURCC ('I', 'V', '5', '0'),
1910     GST_MAKE_FOURCC ('L', '2', '6', '3'),
1911     GST_MAKE_FOURCC ('L', '2', '6', '4'),
1912     GST_MAKE_FOURCC ('M', '2', '6', '3'),
1913     GST_MAKE_FOURCC ('M', '4', 'S', '2'),
1914     GST_MAKE_FOURCC ('M', 'J', 'P', 'G'),
1915     GST_MAKE_FOURCC ('M', 'P', '4', '2'),
1916     GST_MAKE_FOURCC ('M', 'P', '4', '3'),
1917     GST_MAKE_FOURCC ('M', 'P', 'E', 'G'),
1918     GST_MAKE_FOURCC ('M', 'P', 'G', '2'),
1919     GST_MAKE_FOURCC ('M', 'P', 'G', '4'),
1920     GST_MAKE_FOURCC ('M', 'S', 'Z', 'H'),
1921     GST_MAKE_FOURCC ('P', 'N', 'G', ' '),
1922     GST_MAKE_FOURCC ('R', 'L', 'E', ' '),
1923     GST_MAKE_FOURCC ('R', 'T', '2', '1'),
1924     GST_MAKE_FOURCC ('S', 'P', '5', '3'),
1925     GST_MAKE_FOURCC ('T', 'M', '2', '0'),
1926     GST_MAKE_FOURCC ('T', 'S', 'C', 'C'),
1927     GST_MAKE_FOURCC ('U', 'L', 'T', 'I'),
1928     GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'),
1929     GST_MAKE_FOURCC ('V', 'C', 'R', '1'),
1930     GST_MAKE_FOURCC ('V', 'C', 'R', '2'),
1931     GST_MAKE_FOURCC ('V', 'D', 'O', 'W'),
1932     GST_MAKE_FOURCC ('V', 'I', 'V', 'O'),
1933     GST_MAKE_FOURCC ('V', 'M', 'n', 'c'),
1934     GST_MAKE_FOURCC ('V', 'P', '3', ' '),
1935     GST_MAKE_FOURCC ('V', 'S', 'S', 'H'),
1936     GST_MAKE_FOURCC ('W', 'M', 'V', '1'),
1937     GST_MAKE_FOURCC ('W', 'M', 'V', '2'),
1938     GST_MAKE_FOURCC ('W', 'M', 'V', '3'),
1939     GST_MAKE_FOURCC ('X', 'V', 'I', 'D'),
1940     GST_MAKE_FOURCC ('X', 'x', 'a', 'n'),
1941     GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'),
1942     GST_MAKE_FOURCC ('Y', 'V', 'U', '9'),
1943     GST_MAKE_FOURCC ('Z', 'L', 'I', 'B'),
1944     GST_MAKE_FOURCC ('c', 'v', 'i', 'd'),
1945     GST_MAKE_FOURCC ('h', '2', '6', '4'),
1946     GST_MAKE_FOURCC ('m', 's', 'v', 'c'),
1947     GST_MAKE_FOURCC ('x', '2', '6', '3'),
1948     GST_MAKE_FOURCC ('d', 'r', 'a', 'c'),
1949     GST_MAKE_FOURCC ('F', 'F', 'V', '1'),
1950     GST_MAKE_FOURCC ('K', 'M', 'V', 'C'),
1951     GST_MAKE_FOURCC ('V', 'P', '5', '0'),
1952     GST_MAKE_FOURCC ('V', 'P', '6', '0'),
1953     GST_MAKE_FOURCC ('V', 'P', '6', 'F'),
1954     GST_MAKE_FOURCC ('V', 'P', '7', '0'),
1955     GST_MAKE_FOURCC ('V', 'P', '8', '0'),
1956     GST_MAKE_FOURCC ('L', 'M', '2', '0'),
1957     GST_MAKE_FOURCC ('R', 'P', 'Z', 'A'),
1958     GST_MAKE_FOURCC ('T', 'H', 'E', 'O'),
1959     GST_MAKE_FOURCC ('F', 'P', 'S', '1'),
1960     GST_MAKE_FOURCC ('A', 'A', 'S', 'C'),
1961     GST_MAKE_FOURCC ('Y', 'V', '1', '2'),
1962     GST_MAKE_FOURCC ('L', 'O', 'C', 'O'),
1963     GST_MAKE_FOURCC ('Z', 'M', 'B', 'V'),
1964     GST_MAKE_FOURCC ('v', '2', '1', '0'),
1965     GST_MAKE_FOURCC ('r', '2', '1', '0'),
1966     /* FILL ME */
1967   };
1968   guint i;
1969   GstCaps *caps, *one;
1970 
1971   caps = gst_caps_new_empty ();
1972   for (i = 0; i < G_N_ELEMENTS (tags); i++) {
1973     one = gst_riff_create_video_caps (tags[i], NULL, NULL, NULL, NULL, NULL);
1974     if (one)
1975       gst_caps_append (caps, one);
1976   }
1977 
1978   return caps;
1979 }
1980 
1981 GstCaps *
gst_riff_create_audio_template_caps(void)1982 gst_riff_create_audio_template_caps (void)
1983 {
1984   static const guint16 tags[] = {
1985     GST_RIFF_WAVE_FORMAT_GSM610,
1986     GST_RIFF_WAVE_FORMAT_MPEGL3,
1987     GST_RIFF_WAVE_FORMAT_MPEGL12,
1988     GST_RIFF_WAVE_FORMAT_PCM,
1989     GST_RIFF_WAVE_FORMAT_VORBIS1,
1990     GST_RIFF_WAVE_FORMAT_A52,
1991     GST_RIFF_WAVE_FORMAT_DTS,
1992     GST_RIFF_WAVE_FORMAT_AAC,
1993     GST_RIFF_WAVE_FORMAT_ALAW,
1994     GST_RIFF_WAVE_FORMAT_MULAW,
1995     GST_RIFF_WAVE_FORMAT_WMS,
1996     GST_RIFF_WAVE_FORMAT_ADPCM,
1997     GST_RIFF_WAVE_FORMAT_DVI_ADPCM,
1998     GST_RIFF_WAVE_FORMAT_DSP_TRUESPEECH,
1999     GST_RIFF_WAVE_FORMAT_WMAV1,
2000     GST_RIFF_WAVE_FORMAT_WMAV2,
2001     GST_RIFF_WAVE_FORMAT_WMAV3,
2002     GST_RIFF_WAVE_FORMAT_SONY_ATRAC3,
2003     GST_RIFF_WAVE_FORMAT_IEEE_FLOAT,
2004     GST_RIFF_WAVE_FORMAT_VOXWARE_METASOUND,
2005     GST_RIFF_WAVE_FORMAT_ADPCM_IMA_DK4,
2006     GST_RIFF_WAVE_FORMAT_ADPCM_IMA_DK3,
2007     GST_RIFF_WAVE_FORMAT_ADPCM_IMA_WAV,
2008     GST_RIFF_WAVE_FORMAT_AMR_NB,
2009     GST_RIFF_WAVE_FORMAT_AMR_WB,
2010     GST_RIFF_WAVE_FORMAT_SIREN,
2011     /* FILL ME */
2012   };
2013   guint i;
2014   GstCaps *caps, *one;
2015 
2016   caps = gst_caps_new_empty ();
2017   for (i = 0; i < G_N_ELEMENTS (tags); i++) {
2018     one =
2019         gst_riff_create_audio_caps (tags[i], NULL, NULL, NULL, NULL, NULL,
2020         NULL);
2021     if (one)
2022       gst_caps_append (caps, one);
2023   }
2024   one = gst_caps_new_empty_simple ("application/x-ogg-avi");
2025   gst_caps_append (caps, one);
2026 
2027   return caps;
2028 }
2029 
2030 GstCaps *
gst_riff_create_iavs_template_caps(void)2031 gst_riff_create_iavs_template_caps (void)
2032 {
2033   static const guint32 tags[] = {
2034     GST_MAKE_FOURCC ('D', 'V', 'S', 'D')
2035         /* FILL ME */
2036   };
2037   guint i;
2038   GstCaps *caps, *one;
2039 
2040   caps = gst_caps_new_empty ();
2041   for (i = 0; i < G_N_ELEMENTS (tags); i++) {
2042     one = gst_riff_create_iavs_caps (tags[i], NULL, NULL, NULL, NULL, NULL);
2043     if (one)
2044       gst_caps_append (caps, one);
2045   }
2046 
2047   return caps;
2048 }
2049