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gstreamer/gst-libs/gst/pbutils/descriptions.c

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/* GStreamer Plugins Base utils library source/sink/codec description support
* Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:gstpbutilsdescriptions
* @short_description: Provides human-readable descriptions for caps/codecs
* and encoder, decoder, URI source and URI sink elements
*
* <refsect2>
* <para>
* The above functions provide human-readable strings for media formats
* and decoder/demuxer/depayloader/encoder/muxer/payloader elements for use
* in error dialogs or other messages shown to users.
* </para>
* <para>
* gst_pb_utils_add_codec_description_to_tag_list() is a utility function
* for demuxer and decoder elements to add audio/video codec tags from a
* given (fixed) #GstCaps.
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "gst/gst-i18n-plugin.h"
#include <gst/audio/audio.h>
#include <gst/video/video.h>
#include "pbutils.h"
#include "pbutils-private.h"
#include <string.h>
typedef enum
{
FLAG_SYSTEMSTREAM = (1 << 0), /* match record only if caps have systemstream=true */
FLAG_CONTAINER = (1 << 1), /* format is a container format (muxed) */
FLAG_AUDIO = (1 << 2), /* format is an audio format, or audio container/tag */
FLAG_VIDEO = (1 << 3), /* format is a video format, or video container/tag */
FLAG_IMAGE = (1 << 4), /* format is an image format, or image container/tag */
FLAG_SUB = (1 << 5), /* format is a subtitle format, or subtitle container */
FLAG_TAG = (1 << 6), /* format is a tag/container */
FLAG_GENERIC = (1 << 7) /* format is a generic container (e.g. multipart) */
} FormatFlags;
typedef struct
{
const gchar *type;
const gchar *desc;
FormatFlags flags:24;
gchar ext[5]; /* file extension */
} FormatInfo;
#define AV_CONTAINER (FLAG_CONTAINER | FLAG_AUDIO | FLAG_VIDEO)
#define AVS_CONTAINER (AV_CONTAINER | FLAG_SUB)
#define AVI_CONTAINER (AV_CONTAINER | FLAG_IMAGE)
#define AVIS_CONTAINER (AV_CONTAINER | FLAG_IMAGE | FLAG_SUB)
#define AUDIO_CONTAINER (FLAG_CONTAINER | FLAG_AUDIO)
#define VIDEO_CONTAINER (FLAG_CONTAINER | FLAG_VIDEO)
#define AUDIO_TAG (AUDIO_CONTAINER | FLAG_TAG)
static const FormatInfo formats[] = {
/* container/tag formats with static descriptions */
/* FIXME: does anyone use oga in practice? */
{"audio/ogg", "Ogg", AUDIO_CONTAINER, "ogg"},
{"audio/webm", "WebM", AUDIO_CONTAINER, "webm"},
{"audio/x-matroska", "Matroska", AUDIO_CONTAINER, "mka"},
{"application/gxf", "General Exchange Format (GXF)", AVI_CONTAINER, "gxf"},
{"application/ogg", "Ogg", AVIS_CONTAINER, "ogg"},
{"application/kate", "Ogg", FLAG_CONTAINER | FLAG_SUB, "ogg"},
{"application/mxf", "Material eXchange Format (MXF)", AVIS_CONTAINER, "mxf"},
{"application/vnd.rn-realmedia", "Realmedia", AV_CONTAINER, "rm"},
{"application/x-id3", N_("ID3 tag"), AUDIO_TAG, ""},
{"application/x-ape", N_("APE tag"), AUDIO_TAG, ""},
{"application/x-apetag", N_("APE tag"), AUDIO_TAG, ""},
{"application/x-icy", N_("ICY internet radio"), AUDIO_TAG, ""},
{"application/x-3gp", "3GP", AV_CONTAINER, "3gp"},
{"application/x-pn-realaudio", "RealAudio", AUDIO_CONTAINER, "ra"},
{"application/x-yuv4mpeg", "Y4M", VIDEO_CONTAINER, "y4m"},
{"multipart/x-mixed-replace", "Multipart", FLAG_CONTAINER | FLAG_GENERIC, ""},
{"video/ogg", "Ogg", AVIS_CONTAINER, "ogv"},
{"video/x-fli", "FLI/FLC/FLX Animation", VIDEO_CONTAINER, "fli"},
{"video/x-flv", "Flash", AV_CONTAINER, "flv"},
{"video/x-matroska", "Matroska", AVIS_CONTAINER, "mkv"},
/* FIXME: does anyone use .mk3d in practice, rather than .mkv? */
{"video/x-matroska-3d", "Matroska", AVIS_CONTAINER, "mk3d"},
{"video/webm", "WebM", AVS_CONTAINER, "webm"},
{"video/x-ms-asf", "Advanced Streaming Format (ASF)", AVIS_CONTAINER, "asf"},
{"video/x-msvideo", "Audio Video Interleave (AVI)", AVIS_CONTAINER, "avi"},
{"video/x-quicktime", "Quicktime", AVIS_CONTAINER, "mov"},
{"video/quicktime", "Quicktime", AVIS_CONTAINER, "mov"},
{"video/mj2", "Motion JPEG 2000", AVIS_CONTAINER, "mj2"},
/* audio formats with static descriptions */
{"audio/x-ac3", "AC-3 (ATSC A/52)", FLAG_AUDIO, "ac3"},
{"audio/ac3", "AC-3 (ATSC A/52)", FLAG_AUDIO, "ac3"},
{"audio/x-private-ac3", "DVD AC-3 (ATSC A/52)", FLAG_AUDIO, "ac3"},
{"audio/x-private1-ac3", "DVD AC-3 (ATSC A/52)", FLAG_AUDIO, "ac3"},
{"audio/x-alaw", "A-Law", FLAG_AUDIO, ""},
{"audio/amr", "Adaptive Multi Rate (AMR)", FLAG_AUDIO, "amr"},
{"audio/AMR", "Adaptive Multi Rate (AMR)", FLAG_AUDIO, "amr"},
{"audio/AMR-WB", "Adaptive Multi Rate WideBand (AMR-WB)", FLAG_AUDIO, "amr"},
{"audio/iLBC-sh", "Internet Low Bitrate Codec (iLBC)", AUDIO_CONTAINER,
"ilbc"},
{"audio/ms-gsm", "MS GSM", FLAG_AUDIO, "gsm"},
{"audio/qcelp", "QCELP", FLAG_AUDIO, ""},
{"audio/aiff", "Audio Interchange File Format (AIFF)", AUDIO_CONTAINER,
"aiff"},
{"audio/x-aiff", "Audio Interchange File Format (AIFF)", AUDIO_CONTAINER,
"aiff"},
{"audio/x-alac", N_("Apple Lossless Audio (ALAC)"), FLAG_AUDIO, ""},
{"audio/x-amr-nb-sh", "Adaptive Multi Rate NarrowBand (AMR-NB)",
AUDIO_CONTAINER, "amr"},
{"audio/x-amr-wb-sh", "Adaptive Multi Rate WideBand (AMR-WB)",
AUDIO_CONTAINER, "amr"},
{"audio/x-au", "Sun .au", AUDIO_CONTAINER, "au"},
{"audio/x-caf", "Apple Core Audio Format", AUDIO_CONTAINER, "caf"},
{"audio/x-celt", "Constrained Energy Lapped Transform (CELT)", FLAG_AUDIO,
""},
{"audio/x-cinepak", "Cinepak Audio", FLAG_AUDIO, ""},
{"audio/x-dpcm", "DPCM", FLAG_AUDIO, ""},
{"audio/x-dts", "DTS", FLAG_AUDIO, "dts"},
{"audio/x-private1-dts", "DTS", FLAG_AUDIO, "dts"},
{"audio/x-dv", "DV Audio", FLAG_AUDIO, ""},
{"audio/x-eac3", "E-AC-3 (ATSC A/52B)", FLAG_AUDIO, "eac3"},
{"audio/x-flac", N_("Free Lossless Audio Codec (FLAC)"), FLAG_AUDIO, "flac"},
{"audio/x-gsm", "GSM", FLAG_AUDIO, "gsm"},
{"audio/x-iec958", "S/PDIF IEC958", 0, ""}, /* TODO: check description */
{"audio/x-iLBC", "Internet Low Bitrate Codec (iLBC)", FLAG_AUDIO, "ilbc"},
{"audio/x-ircam", "Berkeley/IRCAM/CARL", FLAG_AUDIO, ""},
{"audio/x-lpcm", "LPCM", FLAG_AUDIO, ""},
{"audio/x-private1-lpcm", "DVD LPCM", FLAG_AUDIO, ""},
{"audio/x-m4a", "MPEG-4 AAC", FLAG_CONTAINER, "m4a"},
{"audio/x-mod", "Module Music Format (MOD)", FLAG_AUDIO, "mod"},
{"audio/x-mulaw", "Mu-Law", FLAG_AUDIO, ""},
{"audio/x-musepack", "Musepack (MPC)", FLAG_AUDIO, "mpc"},
{"audio/x-nellymoser", "Nellymoser Asao", FLAG_AUDIO, ""},
{"audio/x-nist", "Sphere NIST", FLAG_AUDIO, ""},
{"audio/x-nsf", "Nintendo NSF", FLAG_AUDIO, ""},
{"audio/x-opus", "Opus", FLAG_AUDIO, ""},
{"audio/x-paris", "Ensoniq PARIS", FLAG_AUDIO, ""},
{"audio/x-qdm", "QDesign Music (QDM)", FLAG_AUDIO, ""},
{"audio/x-qdm2", "QDesign Music (QDM) 2", FLAG_AUDIO, ""},
{"audio/x-ralf-mpeg4-generic", "Real Audio Lossless (RALF)", FLAG_AUDIO, ""},
{"audio/x-rf64", "Broadcast Wave Format", AUDIO_CONTAINER, "rf64"},
{"audio/x-sbc", "Low Complexity Subband Coding", FLAG_AUDIO, "sbc"},
{"audio/x-sds", "Midi Sample Dump Standard", FLAG_AUDIO, ""},
{"audio/x-shorten", "Shorten Lossless", FLAG_AUDIO, "shn"},
{"audio/x-sid", "Sid", FLAG_AUDIO, "sid"},
{"audio/x-sipro", "Sipro/ACELP.NET Voice", FLAG_AUDIO, ""},
{"audio/x-siren", "Siren", FLAG_AUDIO, ""},
{"audio/x-spc", "SNES-SPC700 Sound File Data", FLAG_AUDIO, "spc"},
{"audio/x-speex", "Speex", FLAG_AUDIO, ""},
{"audio/x-svx", "Amiga IFF / SVX8 / SV16", FLAG_AUDIO, ""},
{"audio/x-true-hd", "Dolby TrueHD", FLAG_AUDIO, ""},
{"audio/x-tta", N_("Lossless True Audio (TTA)"), FLAG_AUDIO, "tta"},
{"audio/x-ttafile", N_("Lossless True Audio (TTA)"), FLAG_AUDIO, "tta"},
{"audio/x-vnd.sony.atrac3", "Sony ATRAC3", FLAG_AUDIO, ""},
{"audio/x-vorbis", "Vorbis", FLAG_AUDIO, ""},
{"audio/x-voc", "SoundBlaster VOC", FLAG_AUDIO, ""},
{"audio/x-w64", "Sonic Foundry Wave64", AUDIO_CONTAINER, "w64"},
{"audio/x-wav", "WAV", AUDIO_CONTAINER, "wav"},
{"audio/x-wavpack", "Wavpack", FLAG_AUDIO, "wp"},
{"audio/x-wavpack-correction", "Wavpack", 0, "wpc"},
{"audio/x-wms", N_("Windows Media Speech"), FLAG_AUDIO, ""},
{"audio/x-voxware", "Voxware", FLAG_AUDIO, ""},
{"audio/x-xi", "Fasttracker 2 Extended Instrument", FLAG_AUDIO, "xi"},
/* video formats with static descriptions */
{"video/sp5x", "Sunplus JPEG 5.x", FLAG_VIDEO, ""},
{"video/vivo", "Vivo", FLAG_VIDEO, ""},
{"video/x-4xm", "4X Technologies Video", FLAG_VIDEO, ""},
{"video/x-apple-video", "Apple video", FLAG_VIDEO, ""},
{"video/x-aasc", "Autodesk Animator", FLAG_VIDEO, ""},
{"video/x-camtasia", "TechSmith Camtasia", FLAG_VIDEO, ""},
{"video/x-cdxa", "RIFF/CDXA (VCD)", AV_CONTAINER, ""},
{"video/x-cinepak", "Cinepak Video", FLAG_VIDEO, ""},
{"video/x-cirrus-logic-accupak", "Cirrus Logipak AccuPak", FLAG_VIDEO, ""},
{"video/x-compressed-yuv", N_("CYUV Lossless"), FLAG_VIDEO, ""},
{"video/x-dirac", "Dirac", FLAG_VIDEO, ""},
{"video/x-dnxhd", "Digital Nonlinear Extensible High Definition (DNxHD)",
FLAG_VIDEO, ""},
{"subpicture/x-dvd", "DVD subpicture", FLAG_VIDEO, ""},
{"video/x-ffv", N_("FFMpeg v1"), FLAG_VIDEO, ""},
{"video/x-flash-screen", "Flash Screen Video", FLAG_VIDEO, ""},
{"video/x-flash-video", "Sorenson Spark Video", FLAG_VIDEO, ""},
{"video/x-h261", "H.261", FLAG_VIDEO, ""},
{"video/x-huffyuv", "Huffyuv", FLAG_VIDEO, ""},
{"video/x-intel-h263", "Intel H.263", FLAG_VIDEO, ""},
{"video/x-jpeg", "Motion JPEG", FLAG_VIDEO, ""},
/* { "video/x-jpeg-b", "", 0 }, does this actually exist? */
{"video/x-loco", "LOCO Lossless", FLAG_VIDEO, ""},
{"video/x-mimic", "MIMIC", FLAG_VIDEO, ""},
{"video/x-mjpeg", "Motion-JPEG", FLAG_VIDEO, ""},
{"video/x-mjpeg-b", "Motion-JPEG format B", FLAG_VIDEO, ""},
{"video/mpegts", "MPEG-2 Transport Stream", AVS_CONTAINER, "ts"},
{"video/x-mng", "Multiple Image Network Graphics (MNG)", FLAG_VIDEO, ""},
{"video/x-mszh", N_("Lossless MSZH"), FLAG_VIDEO, ""},
{"video/x-msvideocodec", "Microsoft Video 1", FLAG_VIDEO, ""},
{"video/x-mve", "Interplay MVE", AV_CONTAINER, "mve"},
{"video/x-nut", "NUT", AV_CONTAINER, "nut"},
{"video/x-nuv", "MythTV NuppelVideo (NUV)", AV_CONTAINER, "nuv"},
{"video/x-prores", "Apple ProRes", FLAG_VIDEO, ""},
{"video/x-qdrw", "Apple QuickDraw", FLAG_VIDEO, ""},
{"video/x-smc", "Apple SMC", FLAG_VIDEO, ""},
{"video/x-smoke", "Smoke", FLAG_VIDEO, ""},
{"video/x-tarkin", "Tarkin", FLAG_VIDEO, ""},
{"video/x-theora", "Theora", FLAG_VIDEO, ""},
{"video/x-rle", N_("Run-length encoding"), FLAG_VIDEO, ""},
{"video/x-ultimotion", "IBM UltiMotion", FLAG_VIDEO, ""},
{"video/x-vcd", "VideoCD (VCD)", 0},
{"video/x-vmnc", "VMWare NC", FLAG_VIDEO, ""},
{"video/x-vp3", "On2 VP3", FLAG_VIDEO, ""},
{"video/x-vp5", "On2 VP5", FLAG_VIDEO, ""},
{"video/x-vp6", "On2 VP6", FLAG_VIDEO, ""},
{"video/x-vp6-flash", "On2 VP6/Flash", FLAG_VIDEO, ""},
{"video/x-vp6-alpha", "On2 VP6 with alpha", FLAG_VIDEO, ""},
{"video/x-vp7", "On2 VP7", FLAG_VIDEO, ""},
{"video/x-vp8", "VP8", FLAG_VIDEO, ""},
{"video/x-vp9", "VP9", FLAG_VIDEO, ""},
{"video/x-zlib", "Lossless zlib video", FLAG_VIDEO, ""},
{"video/x-zmbv", "Zip Motion Block video", FLAG_VIDEO, ""},
/* image formats with static descriptions */
{"image/bmp", "BMP", FLAG_IMAGE, "bmp"},
{"image/x-bmp", "BMP", FLAG_IMAGE, "bmp"},
{"image/x-MS-bmp", "BMP", FLAG_IMAGE, "bmp"},
{"image/gif", "GIF", FLAG_IMAGE, "gif"},
{"image/jpeg", "JPEG", FLAG_IMAGE | FLAG_VIDEO, "jpg"},
{"image/jng", "JPEG Network Graphics (JNG)", FLAG_IMAGE, ""},
{"image/png", "PNG", FLAG_VIDEO | FLAG_IMAGE, "png"},
{"image/pbm", "Portable BitMap (PBM)", FLAG_IMAGE, "pbm"},
{"image/ppm", "Portable PixMap (PPM)", FLAG_IMAGE, "ppm"},
{"image/svg+xml", "Scalable Vector Graphics (SVG)", FLAG_IMAGE, "svg"},
{"image/tiff", "TIFF", FLAG_IMAGE, "tiff"},
{"image/x-cmu-raster", "CMU Raster Format", FLAG_IMAGE, ""},
{"image/x-degas", "DEGAS", FLAG_IMAGE, ""},
{"image/x-icon", "ICO", FLAG_IMAGE, "ico"},
{"image/x-j2c", "JPEG 2000", FLAG_VIDEO | FLAG_IMAGE, ""},
{"image/x-jpc", "JPEG 2000", FLAG_VIDEO | FLAG_IMAGE, ""},
{"image/jp2", "JPEG 2000", FLAG_VIDEO | FLAG_IMAGE, ""},
{"image/x-pcx", "PCX", FLAG_IMAGE, ""},
{"image/x-xcf", "XFC", FLAG_IMAGE, ""},
{"image/x-pixmap", "XPM", FLAG_IMAGE, "xpm"},
{"image/x-portable-anymap", "Portable AnyMap (PNM)", FLAG_IMAGE, "pnm"},
{"image/x-portable-graymap", "Portable GrayMap (PGM)", FLAG_IMAGE, "pgm"},
{"image/x-xpixmap", "XPM", FLAG_IMAGE, "xpm"},
{"image/x-quicktime", "QuickTime Image Format (QTIF)",
FLAG_IMAGE | FLAG_CONTAINER, ".mov"},
{"image/x-sun-raster", "Sun Raster Format (RAS)", FLAG_IMAGE, ""},
{"image/x-tga", "TGA", FLAG_IMAGE, "tga"},
{"image/vnd.wap.wbmp", "Wireless Bitmap", FLAG_IMAGE, "wbmp"},
/* subtitle formats with static descriptions */
{"text/x-raw", N_("Timed Text"), FLAG_SUB, ""},
{"application/x-ssa", "SubStation Alpha", FLAG_SUB, ""},
{"application/x-ass", "Advanced SubStation Alpha", FLAG_SUB, ""},
/* FIXME: add variant field to typefinder? */
{"application/x-subtitle", N_("Subtitle"), FLAG_SUB, ""},
{"application/x-subtitle-mpl2", N_("MPL2 subtitle format"), FLAG_SUB, ""},
{"application/x-subtitle-dks", N_("DKS subtitle format"), FLAG_SUB, ""},
{"application/x-subtitle-qttext", N_("QTtext subtitle format"), FLAG_SUB, ""},
{"application/x-subtitle-sami", N_("Sami subtitle format"), FLAG_SUB, ""},
{"application/x-subtitle-tmplayer", N_("TMPlayer subtitle format"), FLAG_SUB,
""},
{"application/x-teletext", "Teletext", 0, ""},
{"application/x-kate", "Kate", 0, ""},
{"subtitle/x-kate", N_("Kate subtitle format"), FLAG_SUB, ""},
{"subpicture/x-dvb", "DVB subtitles", FLAG_SUB, ""},
{"subpicture/x-pgs", "PGS subtitles", FLAG_SUB, ""},
/* non-audio/video/container formats */
{"hdv/aux-v", "HDV AUX-V", 0, ""},
{"hdv/aux-a", "HDV AUX-A", 0, ""},
/* formats with dynamic descriptions */
{"audio/mpeg", NULL, FLAG_AUDIO, ""},
{"audio/x-adpcm", NULL, FLAG_AUDIO, ""},
{"audio/x-mace", NULL, FLAG_AUDIO, ""},
{"audio/x-pn-realaudio", NULL, FLAG_AUDIO, ""},
{"audio/x-raw", NULL, FLAG_AUDIO, ""},
{"audio/x-wma", NULL, FLAG_AUDIO, ""},
{"video/mpeg", NULL, AVS_CONTAINER | FLAG_SYSTEMSTREAM, "mpg"},
{"video/mpeg", NULL, FLAG_VIDEO, ""},
{"video/x-asus", NULL, FLAG_VIDEO, ""},
{"video/x-ati-vcr", NULL, FLAG_VIDEO, ""},
{"video/x-divx", NULL, FLAG_VIDEO, ""},
{"video/x-dv", "Digital Video (DV) System Stream",
FLAG_CONTAINER | FLAG_SYSTEMSTREAM, "dv"},
{"video/x-dv", "Digital Video (DV)", FLAG_VIDEO, ""},
{"video/x-h263", NULL, FLAG_VIDEO, "h263"},
{"video/x-h264", NULL, FLAG_VIDEO, "h264"},
{"video/x-h265", NULL, FLAG_VIDEO, "h265"},
{"video/x-indeo", NULL, FLAG_VIDEO, ""},
{"video/x-msmpeg", NULL, FLAG_VIDEO, ""},
{"video/x-pn-realvideo", NULL, FLAG_VIDEO, ""},
#if 0
/* do these exist? are they used anywhere? */
{"video/x-pn-multirate-realvideo", NULL, 0},
{"audio/x-pn-multirate-realaudio", NULL, 0},
{"audio/x-pn-multirate-realaudio-live", NULL, 0},
#endif
{"video/x-truemotion", NULL, FLAG_VIDEO, ""},
{"video/x-raw", NULL, FLAG_VIDEO, ""},
{"video/x-svq", NULL, FLAG_VIDEO, ""},
{"video/x-wmv", NULL, FLAG_VIDEO, ""},
{"video/x-xan", NULL, FLAG_VIDEO, ""},
{"video/x-tscc", NULL, FLAG_VIDEO, ""}
};
/* returns static descriptions and dynamic ones (such as video/x-raw),
* or NULL if caps aren't known at all */
static gchar *
format_info_get_desc (const FormatInfo * info, const GstCaps * caps)
{
const GstStructure *s;
g_assert (info != NULL);
if (info->desc != NULL)
return g_strdup (_(info->desc));
s = gst_caps_get_structure (caps, 0);
if (strcmp (info->type, "video/x-raw") == 0) {
gchar *ret = NULL;
const gchar *str = 0;
GstVideoFormat format;
const GstVideoFormatInfo *finfo;
str = gst_structure_get_string (s, "format");
if (str == NULL)
return g_strdup (_("Uncompressed video"));
format = gst_video_format_from_string (str);
if (format == GST_VIDEO_FORMAT_UNKNOWN)
return g_strdup (_("Uncompressed video"));
finfo = gst_video_format_get_info (format);
if (GST_VIDEO_FORMAT_INFO_IS_GRAY (finfo)) {
ret = g_strdup (_("Uncompressed gray"));
} else if (GST_VIDEO_FORMAT_INFO_IS_YUV (finfo)) {
const gchar *subs;
gint w_sub, h_sub, n_semi;
w_sub = GST_VIDEO_FORMAT_INFO_W_SUB (finfo, 1);
h_sub = GST_VIDEO_FORMAT_INFO_H_SUB (finfo, 1);
if (w_sub == 1 && h_sub == 1) {
subs = "4:4:4";
} else if (w_sub == 2 && h_sub == 1) {
subs = "4:2:2";
} else if (w_sub == 2 && h_sub == 2) {
subs = "4:2:0";
} else if (w_sub == 4 && h_sub == 1) {
subs = "4:1:1";
} else {
subs = "";
}
n_semi = GST_VIDEO_FORMAT_INFO_HAS_ALPHA (finfo) ? 3 : 2;
if (GST_VIDEO_FORMAT_INFO_N_PLANES (finfo) == 1) {
ret = g_strdup_printf (_("Uncompressed packed YUV %s"), subs);
} else if (GST_VIDEO_FORMAT_INFO_N_PLANES (finfo) == n_semi) {
ret = g_strdup_printf (_("Uncompressed semi-planar YUV %s"), subs);
} else {
ret = g_strdup_printf (_("Uncompressed planar YUV %s"), subs);
}
} else if (GST_VIDEO_FORMAT_INFO_IS_RGB (finfo)) {
gboolean alpha, palette;
gint bits;
alpha = GST_VIDEO_FORMAT_INFO_HAS_ALPHA (finfo);
palette = GST_VIDEO_FORMAT_INFO_HAS_PALETTE (finfo);
bits = GST_VIDEO_FORMAT_INFO_BITS (finfo);
if (palette) {
ret = g_strdup_printf (_("Uncompressed palettized %d-bit %s"),
bits, alpha ? "RGBA" : "RGB");
} else {
ret = g_strdup_printf (_("Uncompressed %d-bit %s"),
bits, alpha ? "RGBA" : "RGB");
}
} else {
ret = g_strdup (_("Uncompressed video"));
}
return ret;
} else if (strcmp (info->type, "video/x-h263") == 0) {
const gchar *variant, *ret;
variant = gst_structure_get_string (s, "variant");
if (variant == NULL)
ret = "H.263";
else if (strcmp (variant, "itu") == 0)
ret = "ITU H.26n"; /* why not ITU H.263? (tpm) */
else if (strcmp (variant, "lead") == 0)
ret = "Lead H.263";
else if (strcmp (variant, "microsoft") == 0)
ret = "Microsoft H.263";
else if (strcmp (variant, "vdolive") == 0)
ret = "VDOLive";
else if (strcmp (variant, "vivo") == 0)
ret = "Vivo H.263";
else if (strcmp (variant, "xirlink") == 0)
ret = "Xirlink H.263";
else {
GST_WARNING ("Unknown H263 variant '%s'", variant);
ret = "H.263";
}
return g_strdup (ret);
} else if (strcmp (info->type, "video/x-h264") == 0) {
const gchar *variant, *ret;
variant = gst_structure_get_string (s, "variant");
if (variant == NULL)
ret = "H.264";
else if (strcmp (variant, "itu") == 0)
ret = "ITU H.264";
else if (strcmp (variant, "videosoft") == 0)
ret = "Videosoft H.264";
else if (strcmp (variant, "lead") == 0)
ret = "Lead H.264";
else {
GST_WARNING ("Unknown H264 variant '%s'", variant);
ret = "H.264";
}
return g_strdup (ret);
} else if (strcmp (info->type, "video/x-h265") == 0) {
/* TODO: Any variants? */
return g_strdup ("H.265");
} else if (strcmp (info->type, "video/x-divx") == 0) {
gint ver = 0;
if (!gst_structure_get_int (s, "divxversion", &ver) || ver <= 2) {
GST_WARNING ("Unexpected DivX version in %" GST_PTR_FORMAT, caps);
return g_strdup ("DivX MPEG-4");
}
return g_strdup_printf (_("DivX MPEG-4 Version %d"), ver);
} else if (strcmp (info->type, "video/x-msmpeg") == 0) {
gint ver = 0;
if (!gst_structure_get_int (s, "msmpegversion", &ver) ||
ver < 40 || ver > 49) {
GST_WARNING ("Unexpected msmpegversion in %" GST_PTR_FORMAT, caps);
return g_strdup ("Microsoft MPEG-4 4.x");
}
return g_strdup_printf ("Microsoft MPEG-4 4.%d", ver % 10);
} else if (strcmp (info->type, "video/x-truemotion") == 0) {
gint ver = 0;
gst_structure_get_int (s, "trueversion", &ver);
switch (ver) {
case 1:
return g_strdup_printf ("Duck TrueMotion 1");
case 2:
return g_strdup_printf ("TrueMotion 2.0");
default:
GST_WARNING ("Unexpected trueversion in %" GST_PTR_FORMAT, caps);
break;
}
return g_strdup_printf ("TrueMotion");
} else if (strcmp (info->type, "video/x-xan") == 0) {
gint ver = 0;
if (!gst_structure_get_int (s, "wcversion", &ver) || ver < 1) {
GST_WARNING ("Unexpected wcversion in %" GST_PTR_FORMAT, caps);
return g_strdup ("Xan Wing Commander");
}
return g_strdup_printf ("Xan Wing Commander %u", ver);
} else if (strcmp (info->type, "video/x-indeo") == 0) {
gint ver = 0;
if (!gst_structure_get_int (s, "indeoversion", &ver) || ver < 2) {
GST_WARNING ("Unexpected indeoversion in %" GST_PTR_FORMAT, caps);
return g_strdup ("Intel Indeo");
}
return g_strdup_printf ("Intel Indeo %u", ver);
} else if (strcmp (info->type, "audio/x-wma") == 0) {
gint ver = 0;
gst_structure_get_int (s, "wmaversion", &ver);
switch (ver) {
case 1:
case 2:
case 3:
return g_strdup_printf ("Windows Media Audio %d", ver + 6);
default:
break;
}
GST_WARNING ("Unexpected wmaversion in %" GST_PTR_FORMAT, caps);
return g_strdup ("Windows Media Audio");
} else if (strcmp (info->type, "video/x-wmv") == 0) {
gint ver = 0;
const gchar *str;
gst_structure_get_int (s, "wmvversion", &ver);
str = gst_structure_get_string (s, "format");
switch (ver) {
case 1:
case 2:
case 3:
if (str && strncmp (str, "MSS", 3)) {
return g_strdup_printf ("Windows Media Video %d Screen", ver + 6);
} else {
return g_strdup_printf ("Windows Media Video %d", ver + 6);
}
default:
break;
}
GST_WARNING ("Unexpected wmvversion in %" GST_PTR_FORMAT, caps);
return g_strdup ("Windows Media Video");
} else if (strcmp (info->type, "audio/x-mace") == 0) {
gint ver = 0;
gst_structure_get_int (s, "maceversion", &ver);
if (ver == 3 || ver == 6) {
return g_strdup_printf ("MACE-%d", ver);
} else {
GST_WARNING ("Unexpected maceversion in %" GST_PTR_FORMAT, caps);
return g_strdup ("MACE");
}
} else if (strcmp (info->type, "video/x-svq") == 0) {
gint ver = 0;
gst_structure_get_int (s, "svqversion", &ver);
if (ver == 1 || ver == 3) {
return g_strdup_printf ("Sorensen Video %d", ver);
} else {
GST_WARNING ("Unexpected svqversion in %" GST_PTR_FORMAT, caps);
return g_strdup ("Sorensen Video");
}
} else if (strcmp (info->type, "video/x-asus") == 0) {
gint ver = 0;
gst_structure_get_int (s, "asusversion", &ver);
if (ver == 1 || ver == 2) {
return g_strdup_printf ("Asus Video %d", ver);
} else {
GST_WARNING ("Unexpected asusversion in %" GST_PTR_FORMAT, caps);
return g_strdup ("Asus Video");
}
} else if (strcmp (info->type, "video/x-ati-vcr") == 0) {
gint ver = 0;
gst_structure_get_int (s, "vcrversion", &ver);
if (ver == 1 || ver == 2) {
return g_strdup_printf ("ATI VCR %d", ver);
} else {
GST_WARNING ("Unexpected acrversion in %" GST_PTR_FORMAT, caps);
return g_strdup ("ATI VCR");
}
} else if (strcmp (info->type, "audio/x-adpcm") == 0) {
const GValue *layout_val;
layout_val = gst_structure_get_value (s, "layout");
if (layout_val != NULL && G_VALUE_HOLDS_STRING (layout_val)) {
const gchar *layout;
if ((layout = g_value_get_string (layout_val))) {
gchar *layout_upper, *ret;
if (strcmp (layout, "swf") == 0)
return g_strdup ("Shockwave ADPCM");
if (strcmp (layout, "microsoft") == 0)
return g_strdup ("Microsoft ADPCM");
if (strcmp (layout, "quicktime") == 0)
return g_strdup ("Quicktime ADPCM");
if (strcmp (layout, "westwood") == 0)
return g_strdup ("Westwood ADPCM");
if (strcmp (layout, "yamaha") == 0)
return g_strdup ("Yamaha ADPCM");
/* FIXME: other layouts: sbpro2, sbpro3, sbpro4, ct, g726, ea,
* adx, xa, 4xm, smjpeg, dk4, dk3, dvi */
layout_upper = g_ascii_strup (layout, -1);
ret = g_strdup_printf ("%s ADPCM", layout_upper);
g_free (layout_upper);
return ret;
}
}
return g_strdup ("ADPCM");
} else if (strcmp (info->type, "audio/mpeg") == 0) {
gint ver = 0, layer = 0;
gst_structure_get_int (s, "mpegversion", &ver);
switch (ver) {
case 1:
gst_structure_get_int (s, "layer", &layer);
switch (layer) {
case 1:
case 2:
case 3:
return g_strdup_printf ("MPEG-1 Layer %d (MP%d)", layer, layer);
default:
break;
}
GST_WARNING ("Unexpected MPEG-1 layer in %" GST_PTR_FORMAT, caps);
return g_strdup ("MPEG-1 Audio");
case 2:
return g_strdup ("MPEG-2 AAC");
case 4:
return g_strdup ("MPEG-4 AAC");
default:
break;
}
GST_WARNING ("Unexpected audio mpegversion in %" GST_PTR_FORMAT, caps);
return g_strdup ("MPEG Audio");
} else if (strcmp (info->type, "audio/x-pn-realaudio") == 0) {
gint ver = 0;
gst_structure_get_int (s, "raversion", &ver);
switch (ver) {
case 1:
return g_strdup ("RealAudio 14k4bps");
case 2:
return g_strdup ("RealAudio 28k8bps");
case 8:
return g_strdup ("RealAudio G2 (Cook)");
default:
break;
}
GST_WARNING ("Unexpected raversion in %" GST_PTR_FORMAT, caps);
return g_strdup ("RealAudio");
} else if (strcmp (info->type, "video/x-pn-realvideo") == 0) {
gint ver = 0;
gst_structure_get_int (s, "rmversion", &ver);
switch (ver) {
case 1:
return g_strdup ("RealVideo 1.0");
case 2:
return g_strdup ("RealVideo 2.0");
case 3:
return g_strdup ("RealVideo 3.0");
case 4:
return g_strdup ("RealVideo 4.0");
default:
break;
}
GST_WARNING ("Unexpected rmversion in %" GST_PTR_FORMAT, caps);
return g_strdup ("RealVideo");
} else if (strcmp (info->type, "video/mpeg") == 0) {
gboolean sysstream;
gint ver = 0;
if (!gst_structure_get_boolean (s, "systemstream", &sysstream)) {
GST_WARNING ("Missing systemstream field in mpeg video caps "
"%" GST_PTR_FORMAT, caps);
sysstream = FALSE;
}
if (gst_structure_get_int (s, "mpegversion", &ver) && ver > 0 && ver <= 4) {
if (sysstream) {
return g_strdup_printf ("MPEG-%d System Stream", ver);
} else {
return g_strdup_printf ("MPEG-%d Video", ver);
}
}
GST_WARNING ("Missing mpegversion field in mpeg video caps "
"%" GST_PTR_FORMAT, caps);
return g_strdup ("MPEG Video");
} else if (strcmp (info->type, "audio/x-raw") == 0) {
gint depth = 0;
gboolean is_float;
const gchar *str;
GstAudioFormat format;
const GstAudioFormatInfo *finfo;
str = gst_structure_get_string (s, "format");
format = gst_audio_format_from_string (str);
if (format == GST_AUDIO_FORMAT_UNKNOWN)
return g_strdup (_("Uncompressed audio"));
finfo = gst_audio_format_get_info (format);
depth = GST_AUDIO_FORMAT_INFO_DEPTH (finfo);
is_float = GST_AUDIO_FORMAT_INFO_IS_FLOAT (finfo);
return g_strdup_printf (_("Raw %d-bit %s audio"), depth,
is_float ? "floating-point" : "PCM");
} else if (strcmp (info->type, "video/x-tscc") == 0) {
gint version;
gst_structure_get_int (s, "tsccversion", &version);
switch (version) {
case 1:
return g_strdup ("TechSmith Screen Capture 1");
case 2:
return g_strdup ("TechSmith Screen Capture 2");
default:
break;
}
GST_WARNING ("Unexpected version in %" GST_PTR_FORMAT, caps);
return g_strdup ("TechSmith Screen Capture");
}
return NULL;
}
/* returns format info structure, will return NULL for dynamic media types! */
static const FormatInfo *
find_format_info (const GstCaps * caps)
{
const GstStructure *s;
const gchar *media_type;
guint i;
s = gst_caps_get_structure (caps, 0);
media_type = gst_structure_get_name (s);
for (i = 0; i < G_N_ELEMENTS (formats); ++i) {
if (strcmp (media_type, formats[i].type) == 0) {
gboolean is_sys = FALSE;
if ((formats[i].flags & FLAG_SYSTEMSTREAM) == 0)
return &formats[i];
/* this record should only be matched if the systemstream field is set */
if (gst_structure_get_boolean (s, "systemstream", &is_sys) && is_sys)
return &formats[i];
}
}
return NULL;
}
static gboolean
caps_are_rtp_caps (const GstCaps * caps, const gchar * media, gchar ** format)
{
const GstStructure *s;
const gchar *str;
g_assert (media != NULL && format != NULL);
s = gst_caps_get_structure (caps, 0);
if (!gst_structure_has_name (s, "application/x-rtp"))
return FALSE;
if (!gst_structure_has_field_typed (s, "media", G_TYPE_STRING))
return FALSE;
str = gst_structure_get_string (s, "media");
if (str == NULL || !g_str_equal (str, media))
return FALSE;
str = gst_structure_get_string (s, "encoding-name");
if (str == NULL || *str == '\0')
return FALSE;
if (strcmp (str, "X-ASF-PF") == 0) {
*format = g_strdup ("Windows Media");
} else if (g_str_has_prefix (str, "X-")) {
*format = g_strdup (str + 2);
} else {
*format = g_strdup (str);
}
return TRUE;
}
/**
* gst_pb_utils_get_source_description:
* @protocol: the protocol the source element needs to handle, e.g. "http"
*
* Returns a localised string describing a source element handling the protocol
* specified in @protocol, for use in error dialogs or other messages to be
* seen by the user. Should never return NULL unless @protocol is invalid.
*
* This function is mainly for internal use, applications would typically
* use gst_missing_plugin_message_get_description() to get a description of
* a missing feature from a missing-plugin message.
*
* Returns: a newly-allocated description string, or NULL on error. Free
* string with g_free() when not needed any longer.
*/
gchar *
gst_pb_utils_get_source_description (const gchar * protocol)
{
gchar *proto_uc, *ret;
g_return_val_if_fail (protocol != NULL, NULL);
if (strcmp (protocol, "cdda") == 0)
return g_strdup (_("Audio CD source"));
if (strcmp (protocol, "dvd") == 0)
return g_strdup (_("DVD source"));
if (strcmp (protocol, "rtsp") == 0)
return g_strdup (_("Real Time Streaming Protocol (RTSP) source"));
/* TODO: what about mmst, mmsu, mmsh? */
if (strcmp (protocol, "mms") == 0)
return g_strdup (_("Microsoft Media Server (MMS) protocol source"));
/* make protocol uppercase */
proto_uc = g_ascii_strup (protocol, -1);
/* TODO: find out how to add a comment for translators to the source code
* (and tell them to make the first letter uppercase below if they move
* the protocol to the middle or end of the string) */
ret = g_strdup_printf (_("%s protocol source"), proto_uc);
g_free (proto_uc);
return ret;
}
/**
* gst_pb_utils_get_sink_description:
* @protocol: the protocol the sink element needs to handle, e.g. "http"
*
* Returns a localised string describing a sink element handling the protocol
* specified in @protocol, for use in error dialogs or other messages to be
* seen by the user. Should never return NULL unless @protocol is invalid.
*
* This function is mainly for internal use, applications would typically
* use gst_missing_plugin_message_get_description() to get a description of
* a missing feature from a missing-plugin message.
*
* Returns: a newly-allocated description string, or NULL on error. Free
* string with g_free() when not needed any longer.
*/
gchar *
gst_pb_utils_get_sink_description (const gchar * protocol)
{
gchar *proto_uc, *ret;
g_return_val_if_fail (protocol != NULL, NULL);
/* make protocol uppercase */
proto_uc = g_ascii_strup (protocol, -1);
/* TODO: find out how to add a comment for translators to the source code
* (and tell them to make the first letter uppercase below if they move
* the protocol to the middle or end of the string) */
ret = g_strdup_printf ("%s protocol sink", proto_uc);
g_free (proto_uc);
return ret;
}
/**
* gst_pb_utils_get_decoder_description:
* @caps: the (fixed) #GstCaps for which an decoder description is needed
*
* Returns a localised string describing an decoder for the format specified
* in @caps, for use in error dialogs or other messages to be seen by the user.
* Should never return NULL unless @factory_name or @caps are invalid.
*
* This function is mainly for internal use, applications would typically
* use gst_missing_plugin_message_get_description() to get a description of
* a missing feature from a missing-plugin message.
*
* Returns: a newly-allocated description string, or NULL on error. Free
* string with g_free() when not needed any longer.
*/
gchar *
gst_pb_utils_get_decoder_description (const GstCaps * caps)
{
gchar *str, *ret;
GstCaps *tmp;
g_return_val_if_fail (caps != NULL, NULL);
g_return_val_if_fail (GST_IS_CAPS (caps), NULL);
tmp = copy_and_clean_caps (caps);
g_return_val_if_fail (gst_caps_is_fixed (tmp), NULL);
/* special-case RTP caps */
if (caps_are_rtp_caps (tmp, "video", &str)) {
ret = g_strdup_printf (_("%s video RTP depayloader"), str);
} else if (caps_are_rtp_caps (tmp, "audio", &str)) {
ret = g_strdup_printf (_("%s audio RTP depayloader"), str);
} else if (caps_are_rtp_caps (tmp, "application", &str)) {
ret = g_strdup_printf (_("%s RTP depayloader"), str);
} else {
const FormatInfo *info;
str = gst_pb_utils_get_codec_description (tmp);
info = find_format_info (tmp);
if (info != NULL && (info->flags & FLAG_CONTAINER) != 0) {
ret = g_strdup_printf (_("%s demuxer"), str);
} else {
ret = g_strdup_printf (_("%s decoder"), str);
}
}
g_free (str);
gst_caps_unref (tmp);
return ret;
}
/**
* gst_pb_utils_get_encoder_description:
* @caps: the (fixed) #GstCaps for which an encoder description is needed
*
* Returns a localised string describing an encoder for the format specified
* in @caps, for use in error dialogs or other messages to be seen by the user.
* Should never return NULL unless @factory_name or @caps are invalid.
*
* This function is mainly for internal use, applications would typically
* use gst_missing_plugin_message_get_description() to get a description of
* a missing feature from a missing-plugin message.
*
* Returns: a newly-allocated description string, or NULL on error. Free
* string with g_free() when not needed any longer.
*/
gchar *
gst_pb_utils_get_encoder_description (const GstCaps * caps)
{
gchar *str, *ret;
GstCaps *tmp;
g_return_val_if_fail (caps != NULL, NULL);
g_return_val_if_fail (GST_IS_CAPS (caps), NULL);
tmp = copy_and_clean_caps (caps);
g_return_val_if_fail (gst_caps_is_fixed (tmp), NULL);
/* special-case RTP caps */
if (caps_are_rtp_caps (tmp, "video", &str)) {
ret = g_strdup_printf (_("%s video RTP payloader"), str);
} else if (caps_are_rtp_caps (tmp, "audio", &str)) {
ret = g_strdup_printf (_("%s audio RTP payloader"), str);
} else if (caps_are_rtp_caps (tmp, "application", &str)) {
ret = g_strdup_printf (_("%s RTP payloader"), str);
} else {
const FormatInfo *info;
str = gst_pb_utils_get_codec_description (tmp);
info = find_format_info (tmp);
if (info != NULL && (info->flags & FLAG_CONTAINER) != 0) {
ret = g_strdup_printf (_("%s muxer"), str);
} else {
ret = g_strdup_printf (_("%s encoder"), str);
}
}
g_free (str);
gst_caps_unref (tmp);
return ret;
}
/**
* gst_pb_utils_get_element_description:
* @factory_name: the name of the element, e.g. "giosrc"
*
* Returns a localised string describing the given element, for use in
* error dialogs or other messages to be seen by the user. Should never
* return NULL unless @factory_name is invalid.
*
* This function is mainly for internal use, applications would typically
* use gst_missing_plugin_message_get_description() to get a description of
* a missing feature from a missing-plugin message.
*
* Returns: a newly-allocated description string, or NULL on error. Free
* string with g_free() when not needed any longer.
*/
gchar *
gst_pb_utils_get_element_description (const gchar * factory_name)
{
gchar *ret;
g_return_val_if_fail (factory_name != NULL, NULL);
ret = g_strdup_printf (_("GStreamer element %s"), factory_name);
if (ret && g_str_has_prefix (ret, factory_name))
*ret = g_ascii_toupper (*ret);
return ret;
}
/**
* gst_pb_utils_add_codec_description_to_tag_list:
* @taglist: a #GstTagList
* @codec_tag: (allow-none): a GStreamer codec tag such as #GST_TAG_AUDIO_CODEC,
* #GST_TAG_VIDEO_CODEC or #GST_TAG_CODEC. If none is specified,
* the function will attempt to detect the appropriate category.
* @caps: the (fixed) #GstCaps for which a codec tag should be added.
*
* Adds a codec tag describing the format specified by @caps to @taglist.
*
* Returns: TRUE if a codec tag was added, FALSE otherwise.
*/
gboolean
gst_pb_utils_add_codec_description_to_tag_list (GstTagList * taglist,
const gchar * codec_tag, const GstCaps * caps)
{
const FormatInfo *info;
gchar *desc;
g_return_val_if_fail (taglist != NULL, FALSE);
g_return_val_if_fail (GST_IS_TAG_LIST (taglist), FALSE);
g_return_val_if_fail (codec_tag == NULL || (gst_tag_exists (codec_tag)
&& gst_tag_get_type (codec_tag) == G_TYPE_STRING), FALSE);
g_return_val_if_fail (caps != NULL, FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
info = find_format_info (caps);
if (info == NULL)
return FALSE;
/* Attempt to find tag classification */
if (codec_tag == NULL) {
if (info->flags & FLAG_CONTAINER)
codec_tag = GST_TAG_CONTAINER_FORMAT;
else if (info->flags & FLAG_AUDIO)
codec_tag = GST_TAG_AUDIO_CODEC;
else if (info->flags & FLAG_VIDEO)
codec_tag = GST_TAG_VIDEO_CODEC;
else if (info->flags & FLAG_SUB)
codec_tag = GST_TAG_SUBTITLE_CODEC;
else
codec_tag = GST_TAG_CODEC;
}
desc = format_info_get_desc (info, caps);
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, codec_tag, desc, NULL);
g_free (desc);
return TRUE;
}
/**
* gst_pb_utils_get_codec_description:
* @caps: the (fixed) #GstCaps for which an format description is needed
*
* Returns a localised (as far as this is possible) string describing the
* media format specified in @caps, for use in error dialogs or other messages
* to be seen by the user. Should never return NULL unless @caps is invalid.
*
* Also see the convenience function
* gst_pb_utils_add_codec_description_to_tag_list().
*
* Returns: a newly-allocated description string, or NULL on error. Free
* string with g_free() when not needed any longer.
*/
gchar *
gst_pb_utils_get_codec_description (const GstCaps * caps)
{
const FormatInfo *info;
gchar *str, *comma;
GstCaps *tmp;
g_return_val_if_fail (caps != NULL, NULL);
g_return_val_if_fail (GST_IS_CAPS (caps), NULL);
tmp = copy_and_clean_caps (caps);
g_return_val_if_fail (gst_caps_is_fixed (tmp), NULL);
info = find_format_info (tmp);
if (info) {
str = format_info_get_desc (info, tmp);
} else {
str = gst_caps_to_string (tmp);
/* cut off everything after the media type, if there is anything */
if ((comma = strchr (str, ','))) {
*comma = '\0';
g_strchomp (str);
/* we could do something more elaborate here, like taking into account
* audio/, video/, image/ and application/ prefixes etc. */
}
GST_WARNING ("No description available for media type: %s", str);
}
gst_caps_unref (tmp);
return str;
}
/* internal helper functions for gst_encoding_profile_get_file_extension() */
const gchar *pb_utils_get_file_extension_from_caps (const GstCaps * caps);
gboolean pb_utils_is_tag (const GstCaps * caps);
const gchar *
pb_utils_get_file_extension_from_caps (const GstCaps * caps)
{
const FormatInfo *info;
const gchar *ext = NULL;
GstCaps *stripped_caps;
g_assert (GST_IS_CAPS (caps));
stripped_caps = copy_and_clean_caps (caps);
g_assert (gst_caps_is_fixed (stripped_caps));
info = find_format_info (stripped_caps);
if (info && info->ext[0] != '\0') {
ext = info->ext;
} else if (info && info->desc == NULL) {
const GstStructure *s;
s = gst_caps_get_structure (stripped_caps, 0);
/* cases where we have to evaluate the caps more closely */
if (strcmp (info->type, "audio/mpeg") == 0) {
int version = 0, layer = 3;
if (gst_structure_get_int (s, "mpegversion", &version)) {
if (version == 2 || version == 4) {
ext = "aac";
} else if (version == 1) {
gst_structure_get_int (s, "layer", &layer);
if (layer == 1)
ext = "mp1";
else if (layer == 2)
ext = "mp2";
else
ext = "mp3";
}
}
}
}
gst_caps_unref (stripped_caps);
return ext;
}
gboolean
pb_utils_is_tag (const GstCaps * caps)
{
const FormatInfo *info;
GstCaps *stripped_caps;
gboolean is_tag = FALSE;
g_assert (GST_IS_CAPS (caps));
stripped_caps = copy_and_clean_caps (caps);
g_assert (gst_caps_is_fixed (stripped_caps));
info = find_format_info (stripped_caps);
if (info) {
is_tag = (info->flags & FLAG_TAG) != 0;
}
gst_caps_unref (stripped_caps);
return is_tag;
}
#if 0
void
gst_pb_utils_list_all (void)
{
gint i;
g_print ("static const gchar *caps_strings[] = { ");
for (i = 0; i < G_N_ELEMENTS (formats); ++i) {
if (formats[i].desc != NULL)
g_print (" \"%s\", ", formats[i].type);
}
g_print ("\n#if 0\n");
for (i = 0; i < G_N_ELEMENTS (formats); ++i) {
if (formats[i].desc == NULL)
g_print (" \"%s\", \n", formats[i].type);
}
g_print ("\n#endif\n");
}
#endif
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