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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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audio: add GstAudioFormat, GstAudioFormatInfo and GstAudioInfo
Same as in 0.11, but with caps parsing/serialising for 0.10 style caps. Add setting default channel positions.
This commit is contained in:
Tim-Philipp Müller
parent
bf4a28f420
commit
63a3d360dc
4 changed files with 686 additions and 3 deletions
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@ -32,6 +32,8 @@
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#include <gst/gststructure.h>
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#include <string.h>
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/**
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* gst_audio_frame_byte_size:
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* @pad: the #GstPad to get the caps from
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@ -268,6 +270,412 @@ gst_audio_structure_set_int (GstStructure * structure, GstAudioFieldFlag flag)
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}
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#endif /* GST_REMOVE_DEPRECATED */
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#define SINT (GST_AUDIO_FORMAT_FLAG_INTEGER | GST_AUDIO_FORMAT_FLAG_SIGNED)
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#define UINT (GST_AUDIO_FORMAT_FLAG_INTEGER)
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#define MAKE_FORMAT(str,flags,end,width,depth,silent) \
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{ GST_AUDIO_FORMAT_ ##str, G_STRINGIFY(str), flags, end, width, depth, silent }
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#define SILENT_0 { 0, 0, 0, 0, 0, 0, 0, 0 }
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#define SILENT_U8 { 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80 }
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#define SILENT_U16_LE { 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80 }
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#define SILENT_U16_BE { 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00 }
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#define SILENT_U24_LE { 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x80, 0x00 }
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#define SILENT_U24_BE { 0x00, 0x80, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00 }
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#define SILENT_U32_LE { 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x80 }
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#define SILENT_U32_BE { 0x80, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 }
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#define SILENT_U24_3LE { 0x00, 0x00, 0x80, 0x00, 0x00, 0x80 }
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#define SILENT_U24_3BE { 0x80, 0x00, 0x00, 0x80, 0x00, 0x00 }
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#define SILENT_U20_3LE { 0x00, 0x00, 0x08, 0x00, 0x00, 0x08 }
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#define SILENT_U20_3BE { 0x08, 0x00, 0x00, 0x08, 0x00, 0x00 }
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#define SILENT_U18_3LE { 0x00, 0x00, 0x02, 0x00, 0x00, 0x02 }
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#define SILENT_U18_3BE { 0x02, 0x00, 0x00, 0x02, 0x00, 0x00 }
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static GstAudioFormatInfo formats[] = {
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{GST_AUDIO_FORMAT_UNKNOWN, "UNKNOWN", 0, 0, 0, 0},
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/* 8 bit */
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MAKE_FORMAT (S8, SINT, 0, 8, 8, SILENT_0),
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MAKE_FORMAT (U8, UINT, 0, 8, 8, SILENT_U8),
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/* 16 bit */
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MAKE_FORMAT (S16_LE, SINT, G_LITTLE_ENDIAN, 16, 16, SILENT_0),
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MAKE_FORMAT (S16_BE, SINT, G_BIG_ENDIAN, 16, 16, SILENT_0),
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MAKE_FORMAT (U16_LE, UINT, G_LITTLE_ENDIAN, 16, 16, SILENT_U16_LE),
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MAKE_FORMAT (U16_BE, UINT, G_BIG_ENDIAN, 16, 16, SILENT_U16_BE),
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/* 24 bit in low 3 bytes of 32 bits */
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MAKE_FORMAT (S24_LE, SINT, G_LITTLE_ENDIAN, 32, 24, SILENT_0),
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MAKE_FORMAT (S24_BE, SINT, G_BIG_ENDIAN, 32, 24, SILENT_0),
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MAKE_FORMAT (U24_LE, UINT, G_LITTLE_ENDIAN, 32, 24, SILENT_U24_LE),
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MAKE_FORMAT (U24_BE, UINT, G_BIG_ENDIAN, 32, 24, SILENT_U24_BE),
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/* 32 bit */
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MAKE_FORMAT (S32_LE, SINT, G_LITTLE_ENDIAN, 32, 32, SILENT_0),
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MAKE_FORMAT (S32_BE, SINT, G_BIG_ENDIAN, 32, 32, SILENT_0),
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MAKE_FORMAT (U32_LE, UINT, G_LITTLE_ENDIAN, 32, 32, SILENT_U32_LE),
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MAKE_FORMAT (U32_BE, UINT, G_BIG_ENDIAN, 32, 32, SILENT_U32_BE),
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/* 24 bit in 3 bytes */
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MAKE_FORMAT (S24_3LE, SINT, G_LITTLE_ENDIAN, 24, 24, SILENT_0),
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MAKE_FORMAT (S24_3BE, SINT, G_BIG_ENDIAN, 24, 24, SILENT_0),
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MAKE_FORMAT (U24_3LE, UINT, G_LITTLE_ENDIAN, 24, 24, SILENT_U24_3LE),
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MAKE_FORMAT (U24_3BE, UINT, G_BIG_ENDIAN, 24, 24, SILENT_U24_3BE),
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/* 20 bit in 3 bytes */
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MAKE_FORMAT (S20_3LE, SINT, G_LITTLE_ENDIAN, 24, 20, SILENT_0),
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MAKE_FORMAT (S20_3BE, SINT, G_BIG_ENDIAN, 24, 20, SILENT_0),
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MAKE_FORMAT (U20_3LE, UINT, G_LITTLE_ENDIAN, 24, 20, SILENT_U20_3LE),
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MAKE_FORMAT (U20_3BE, UINT, G_BIG_ENDIAN, 24, 20, SILENT_U20_3BE),
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/* 18 bit in 3 bytes */
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MAKE_FORMAT (S18_3LE, SINT, G_LITTLE_ENDIAN, 24, 18, SILENT_0),
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MAKE_FORMAT (S18_3BE, SINT, G_BIG_ENDIAN, 24, 18, SILENT_0),
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MAKE_FORMAT (U18_3LE, UINT, G_LITTLE_ENDIAN, 24, 18, SILENT_U18_3LE),
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MAKE_FORMAT (U18_3BE, UINT, G_BIG_ENDIAN, 24, 18, SILENT_U18_3BE),
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/* float */
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MAKE_FORMAT (F32_LE, GST_AUDIO_FORMAT_FLAG_FLOAT, G_LITTLE_ENDIAN, 32, 32,
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SILENT_0),
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MAKE_FORMAT (F32_BE, GST_AUDIO_FORMAT_FLAG_FLOAT, G_BIG_ENDIAN, 32, 32,
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SILENT_0),
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MAKE_FORMAT (F64_LE, GST_AUDIO_FORMAT_FLAG_FLOAT, G_LITTLE_ENDIAN, 64, 64,
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SILENT_0),
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MAKE_FORMAT (F64_BE, GST_AUDIO_FORMAT_FLAG_FLOAT, G_BIG_ENDIAN, 64, 64,
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SILENT_0)
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};
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static GstAudioFormat
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gst_audio_format_from_caps_structure (const GstStructure * s)
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{
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gint endianness, width, depth;
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guint i;
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if (gst_structure_has_name (s, "audio/x-raw-int")) {
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gboolean sign;
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if (!gst_structure_get_boolean (s, "signed", &sign))
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goto missing_field_signed;
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if (!gst_structure_get_int (s, "endianness", &endianness))
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goto missing_field_endianness;
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if (!gst_structure_get_int (s, "width", &width))
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goto missing_field_width;
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if (!gst_structure_get_int (s, "depth", &depth))
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goto missing_field_depth;
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for (i = 0; i < G_N_ELEMENTS (formats); i++) {
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if (GST_AUDIO_FORMAT_INFO_IS_INTEGER (&formats[i]) &&
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sign == GST_AUDIO_FORMAT_INFO_IS_SIGNED (&formats[i]) &&
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GST_AUDIO_FORMAT_INFO_ENDIANNESS (&formats[i]) == endianness &&
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GST_AUDIO_FORMAT_INFO_WIDTH (&formats[i]) == width &&
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GST_AUDIO_FORMAT_INFO_DEPTH (&formats[i]) == depth) {
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return GST_AUDIO_FORMAT_INFO_FORMAT (&formats[i]);
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}
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}
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} else if (gst_structure_has_name (s, "audio/x-raw-float")) {
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/* fallbacks are for backwards compatibility (is this needed at all?) */
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if (!gst_structure_get_int (s, "endianness", &endianness)) {
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GST_WARNING ("float audio caps without endianness %" GST_PTR_FORMAT, s);
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endianness = G_BYTE_ORDER;
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}
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if (!gst_structure_get_int (s, "width", &width)) {
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GST_WARNING ("float audio caps without width %" GST_PTR_FORMAT, s);
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width = 32;
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}
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for (i = 0; i < G_N_ELEMENTS (formats); i++) {
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if (GST_AUDIO_FORMAT_INFO_IS_FLOAT (&formats[i]) &&
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GST_AUDIO_FORMAT_INFO_ENDIANNESS (&formats[i]) == endianness &&
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GST_AUDIO_FORMAT_INFO_WIDTH (&formats[i]) == width) {
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return GST_AUDIO_FORMAT_INFO_FORMAT (&formats[i]);
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}
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}
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}
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/* no match */
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return GST_AUDIO_FORMAT_UNKNOWN;
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missing_field_signed:
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{
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GST_ERROR ("missing 'signed' field in audio caps %" GST_PTR_FORMAT, s);
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return GST_AUDIO_FORMAT_UNKNOWN;
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}
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missing_field_endianness:
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{
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GST_ERROR ("missing 'endianness' field in audio caps %" GST_PTR_FORMAT, s);
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return GST_AUDIO_FORMAT_UNKNOWN;
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}
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missing_field_depth:
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{
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GST_ERROR ("missing 'depth' field in audio caps %" GST_PTR_FORMAT, s);
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return GST_AUDIO_FORMAT_UNKNOWN;
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}
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missing_field_width:
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{
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GST_ERROR ("missing 'width' field in audio caps %" GST_PTR_FORMAT, s);
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return GST_AUDIO_FORMAT_UNKNOWN;
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}
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}
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static void
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gst_audio_info_set_format (GstAudioInfo * info, GstAudioFormat format,
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gint rate, gint channels)
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{
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const GstAudioFormatInfo *finfo;
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g_return_if_fail (info != NULL);
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g_return_if_fail (format != GST_AUDIO_FORMAT_UNKNOWN);
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finfo = &formats[format];
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info->flags = 0;
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info->finfo = finfo;
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info->rate = rate;
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info->channels = channels;
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info->bpf = (finfo->width * channels) / 8;
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}
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/* from multichannel.c */
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void priv_gst_audio_info_fill_default_channel_positions (GstAudioInfo * info);
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/**
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* gst_audio_info_from_caps:
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* @info: a #GstAudioInfo
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* @caps: a #GstCaps
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*
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* Parse @caps and update @info.
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*
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* Returns: TRUE if @caps could be parsed
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*
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* Since: 0.10.36
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*/
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gboolean
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gst_audio_info_from_caps (GstAudioInfo * info, const GstCaps * caps)
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{
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GstStructure *str;
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GstAudioFormat format;
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gint rate, channels;
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const GValue *pos_val_arr, *pos_val_entry;
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gint i;
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g_return_val_if_fail (info != NULL, FALSE);
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g_return_val_if_fail (caps != NULL, FALSE);
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g_return_val_if_fail (gst_caps_is_fixed (caps), FALSE);
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GST_DEBUG ("parsing caps %" GST_PTR_FORMAT, caps);
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str = gst_caps_get_structure (caps, 0);
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format = gst_audio_format_from_caps_structure (str);
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if (format == GST_AUDIO_FORMAT_UNKNOWN)
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goto unknown_format;
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if (!gst_structure_get_int (str, "rate", &rate))
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goto no_rate;
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if (!gst_structure_get_int (str, "channels", &channels))
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goto no_channels;
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gst_audio_info_set_format (info, format, rate, channels);
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pos_val_arr = gst_structure_get_value (str, "channel-positions");
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if (pos_val_arr) {
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if (channels <= G_N_ELEMENTS (info->position)) {
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for (i = 0; i < channels; i++) {
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pos_val_entry = gst_value_array_get_value (pos_val_arr, i);
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info->position[i] = g_value_get_enum (pos_val_entry);
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}
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} else {
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/* for that many channels, the positions are always NONE */
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for (i = 0; i < G_N_ELEMENTS (info->position); i++)
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info->position[i] = GST_AUDIO_CHANNEL_POSITION_NONE;
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info->flags |= GST_AUDIO_FLAG_DEFAULT_POSITIONS;
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}
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} else {
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info->flags |= GST_AUDIO_FLAG_DEFAULT_POSITIONS;
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priv_gst_audio_info_fill_default_channel_positions (info);
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}
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return TRUE;
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/* ERROR */
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unknown_format:
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{
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GST_ERROR ("unknown format given");
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return FALSE;
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}
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no_rate:
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{
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GST_ERROR ("no rate property given");
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return FALSE;
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}
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no_channels:
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{
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GST_ERROR ("no channels property given");
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return FALSE;
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}
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}
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/**
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* gst_audio_info_to_caps:
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* @info: a #GstAudioInfo
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*
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* Convert the values of @info into a #GstCaps.
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*
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* Returns: (transfer full): the new #GstCaps containing the
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* info of @info.
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*
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* Since: 0.10.36
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*/
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GstCaps *
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gst_audio_info_to_caps (GstAudioInfo * info)
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{
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GstCaps *caps;
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g_return_val_if_fail (info != NULL, NULL);
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g_return_val_if_fail (info->finfo != NULL, NULL);
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g_return_val_if_fail (info->finfo->format != GST_AUDIO_FORMAT_UNKNOWN, NULL);
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if (GST_AUDIO_FORMAT_INFO_IS_INTEGER (info->finfo)) {
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caps = gst_caps_new_simple ("audio/x-raw-int",
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"width", G_TYPE_INT, GST_AUDIO_INFO_WIDTH (info),
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"depth", G_TYPE_INT, GST_AUDIO_INFO_DEPTH (info),
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"endianness", G_TYPE_INT,
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GST_AUDIO_FORMAT_INFO_ENDIANNESS (info->finfo), "signed",
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G_TYPE_BOOLEAN, GST_AUDIO_FORMAT_INFO_IS_SIGNED (info->finfo), "rate",
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G_TYPE_INT, GST_AUDIO_INFO_RATE (info), "channels", G_TYPE_INT,
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GST_AUDIO_INFO_CHANNELS (info), NULL);
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} else if (GST_AUDIO_FORMAT_INFO_IS_FLOAT (info->finfo)) {
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caps = gst_caps_new_simple ("audio/x-raw-float",
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"width", G_TYPE_INT, GST_AUDIO_INFO_WIDTH (info),
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"endianness", G_TYPE_INT,
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GST_AUDIO_FORMAT_INFO_ENDIANNESS (info->finfo), "rate", G_TYPE_INT,
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GST_AUDIO_INFO_RATE (info), "channels", G_TYPE_INT,
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GST_AUDIO_INFO_CHANNELS (info), NULL);
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} else {
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GST_ERROR ("unknown audio format, neither integer nor float");
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return NULL;
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}
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if (info->channels > 2) {
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GValue pos_val_arr = { 0 }
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, pos_val_entry = {
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0};
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GstStructure *str;
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gint i;
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/* build gvaluearray from positions */
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g_value_init (&pos_val_arr, GST_TYPE_ARRAY);
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g_value_init (&pos_val_entry, GST_TYPE_AUDIO_CHANNEL_POSITION);
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for (i = 0; i < info->channels; i++) {
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/* if we have many many channels, all positions are NONE */
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if (info->channels <= 64)
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g_value_set_enum (&pos_val_entry, info->position[i]);
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else
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g_value_set_enum (&pos_val_entry, GST_AUDIO_CHANNEL_POSITION_NONE);
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gst_value_array_append_value (&pos_val_arr, &pos_val_entry);
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}
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g_value_unset (&pos_val_entry);
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/* add to structure */
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str = gst_caps_get_structure (caps, 0);
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gst_structure_set_value (str, "channel-positions", &pos_val_arr);
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g_value_unset (&pos_val_arr);
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}
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return caps;
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}
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/**
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* gst_audio_format_convert:
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* @info: a #GstAudioInfo
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* @src_format: #GstFormat of the @src_value
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* @src_value: value to convert
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* @dest_format: #GstFormat of the @dest_value
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* @dest_value: pointer to destination value
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*
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* Converts among various #GstFormat types. This function handles
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* GST_FORMAT_BYTES, GST_FORMAT_TIME, and GST_FORMAT_DEFAULT. For
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* raw audio, GST_FORMAT_DEFAULT corresponds to audio frames. This
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* function can be used to handle pad queries of the type GST_QUERY_CONVERT.
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*
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* Returns: TRUE if the conversion was successful.
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*
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* Since: 0.10.36
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*/
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gboolean
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gst_audio_info_convert (GstAudioInfo * info,
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GstFormat src_fmt, gint64 src_val, GstFormat dest_fmt, gint64 * dest_val)
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{
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gboolean res = TRUE;
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gint bpf, rate;
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GST_DEBUG ("converting value %" G_GINT64_FORMAT " from %s (%d) to %s (%d)",
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src_val, gst_format_get_name (src_fmt), src_fmt,
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gst_format_get_name (dest_fmt), dest_fmt);
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if (src_fmt == dest_fmt || src_val == -1) {
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*dest_val = src_val;
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goto done;
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}
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/* get important info */
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bpf = GST_AUDIO_INFO_BPF (info);
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rate = GST_AUDIO_INFO_RATE (info);
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if (bpf == 0 || rate == 0) {
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GST_DEBUG ("no rate or bpf configured");
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res = FALSE;
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goto done;
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}
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switch (src_fmt) {
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case GST_FORMAT_BYTES:
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switch (dest_fmt) {
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case GST_FORMAT_TIME:
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*dest_val = GST_FRAMES_TO_CLOCK_TIME (src_val / bpf, rate);
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break;
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case GST_FORMAT_DEFAULT:
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*dest_val = src_val / bpf;
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break;
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default:
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res = FALSE;
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break;
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}
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break;
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case GST_FORMAT_DEFAULT:
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switch (dest_fmt) {
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case GST_FORMAT_TIME:
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*dest_val = GST_FRAMES_TO_CLOCK_TIME (src_val, rate);
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break;
|
||||
case GST_FORMAT_BYTES:
|
||||
*dest_val = src_val * bpf;
|
||||
break;
|
||||
default:
|
||||
res = FALSE;
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case GST_FORMAT_TIME:
|
||||
switch (dest_fmt) {
|
||||
case GST_FORMAT_DEFAULT:
|
||||
*dest_val = GST_CLOCK_TIME_TO_FRAMES (src_val, rate);
|
||||
break;
|
||||
case GST_FORMAT_BYTES:
|
||||
*dest_val = GST_CLOCK_TIME_TO_FRAMES (src_val, rate);
|
||||
*dest_val *= bpf;
|
||||
break;
|
||||
default:
|
||||
res = FALSE;
|
||||
break;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
res = FALSE;
|
||||
break;
|
||||
}
|
||||
done:
|
||||
GST_DEBUG ("ret=%d result %" G_GINT64_FORMAT, res, *dest_val);
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
/**
|
||||
* gst_audio_buffer_clip:
|
||||
* @buffer: The buffer to clip.
|
||||
|
|
|
|||
|
|
@ -23,8 +23,257 @@
|
|||
#ifndef __GST_AUDIO_AUDIO_H__
|
||||
#define __GST_AUDIO_AUDIO_H__
|
||||
|
||||
#include <gst/audio/multichannel.h>
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
/**
|
||||
* GstAudioFormat:
|
||||
* @GST_AUDIO_FORMAT_UNKNOWN: unknown audio format
|
||||
* @GST_AUDIO_FORMAT_S8: sample
|
||||
* @GST_AUDIO_FORMAT_U8: sample
|
||||
* @GST_AUDIO_FORMAT_S16_LE: sample
|
||||
* @GST_AUDIO_FORMAT_S16_BE: sample
|
||||
* @GST_AUDIO_FORMAT_U16_LE: sample
|
||||
* @GST_AUDIO_FORMAT_U16_BE: sample
|
||||
* @GST_AUDIO_FORMAT_S24_LE: sample
|
||||
* @GST_AUDIO_FORMAT_S24_BE: sample
|
||||
* @GST_AUDIO_FORMAT_U24_LE: sample
|
||||
* @GST_AUDIO_FORMAT_U24_BE: sample
|
||||
* @GST_AUDIO_FORMAT_S32_LE: sample
|
||||
* @GST_AUDIO_FORMAT_S32_BE: sample
|
||||
* @GST_AUDIO_FORMAT_U32_LE: sample
|
||||
* @GST_AUDIO_FORMAT_U32_BE: sample
|
||||
* @GST_AUDIO_FORMAT_S24_3LE: sample
|
||||
* @GST_AUDIO_FORMAT_S24_3BE: sample
|
||||
* @GST_AUDIO_FORMAT_U24_3LE: sample
|
||||
* @GST_AUDIO_FORMAT_U24_3BE: sample
|
||||
* @GST_AUDIO_FORMAT_S20_3LE: sample
|
||||
* @GST_AUDIO_FORMAT_S20_3BE: sample
|
||||
* @GST_AUDIO_FORMAT_U20_3LE: sample
|
||||
* @GST_AUDIO_FORMAT_U20_3BE: sample
|
||||
* @GST_AUDIO_FORMAT_S18_3LE: sample
|
||||
* @GST_AUDIO_FORMAT_S18_3BE: sample
|
||||
* @GST_AUDIO_FORMAT_U18_3LE: sample
|
||||
* @GST_AUDIO_FORMAT_U18_3BE: sample
|
||||
* @GST_AUDIO_FORMAT_F32_LE: sample
|
||||
* @GST_AUDIO_FORMAT_F32_BE: sample
|
||||
* @GST_AUDIO_FORMAT_F64_LE: sample
|
||||
* @GST_AUDIO_FORMAT_F64_BE: sample
|
||||
*
|
||||
* Enum value describing the most common audio formats.
|
||||
*
|
||||
* Since: 0.10.36
|
||||
*/
|
||||
typedef enum {
|
||||
GST_AUDIO_FORMAT_UNKNOWN,
|
||||
/* 8 bit */
|
||||
GST_AUDIO_FORMAT_S8,
|
||||
GST_AUDIO_FORMAT_U8,
|
||||
/* 16 bit */
|
||||
GST_AUDIO_FORMAT_S16_LE,
|
||||
GST_AUDIO_FORMAT_S16_BE,
|
||||
GST_AUDIO_FORMAT_U16_LE,
|
||||
GST_AUDIO_FORMAT_U16_BE,
|
||||
/* 24 bit in low 3 bytes of 32 bits*/
|
||||
GST_AUDIO_FORMAT_S24_LE,
|
||||
GST_AUDIO_FORMAT_S24_BE,
|
||||
GST_AUDIO_FORMAT_U24_LE,
|
||||
GST_AUDIO_FORMAT_U24_BE,
|
||||
/* 32 bit */
|
||||
GST_AUDIO_FORMAT_S32_LE,
|
||||
GST_AUDIO_FORMAT_S32_BE,
|
||||
GST_AUDIO_FORMAT_U32_LE,
|
||||
GST_AUDIO_FORMAT_U32_BE,
|
||||
/* 24 bit in 3 bytes*/
|
||||
GST_AUDIO_FORMAT_S24_3LE,
|
||||
GST_AUDIO_FORMAT_S24_3BE,
|
||||
GST_AUDIO_FORMAT_U24_3LE,
|
||||
GST_AUDIO_FORMAT_U24_3BE,
|
||||
/* 20 bit in 3 bytes*/
|
||||
GST_AUDIO_FORMAT_S20_3LE,
|
||||
GST_AUDIO_FORMAT_S20_3BE,
|
||||
GST_AUDIO_FORMAT_U20_3LE,
|
||||
GST_AUDIO_FORMAT_U20_3BE,
|
||||
/* 18 bit in 3 bytes*/
|
||||
GST_AUDIO_FORMAT_S18_3LE,
|
||||
GST_AUDIO_FORMAT_S18_3BE,
|
||||
GST_AUDIO_FORMAT_U18_3LE,
|
||||
GST_AUDIO_FORMAT_U18_3BE,
|
||||
/* float */
|
||||
GST_AUDIO_FORMAT_F32_LE,
|
||||
GST_AUDIO_FORMAT_F32_BE,
|
||||
GST_AUDIO_FORMAT_F64_LE,
|
||||
GST_AUDIO_FORMAT_F64_BE,
|
||||
#if G_BYTE_ORDER == G_BIG_ENDIAN
|
||||
GST_AUDIO_FORMAT_S16 = GST_AUDIO_FORMAT_S16_BE,
|
||||
GST_AUDIO_FORMAT_U16 = GST_AUDIO_FORMAT_U16_BE,
|
||||
GST_AUDIO_FORMAT_S24 = GST_AUDIO_FORMAT_S24_BE,
|
||||
GST_AUDIO_FORMAT_U24 = GST_AUDIO_FORMAT_U24_BE,
|
||||
GST_AUDIO_FORMAT_S32 = GST_AUDIO_FORMAT_S32_BE,
|
||||
GST_AUDIO_FORMAT_U32 = GST_AUDIO_FORMAT_U32_BE,
|
||||
GST_AUDIO_FORMAT_S24_3 = GST_AUDIO_FORMAT_S24_3BE,
|
||||
GST_AUDIO_FORMAT_U24_3 = GST_AUDIO_FORMAT_U24_3BE,
|
||||
GST_AUDIO_FORMAT_S20_3 = GST_AUDIO_FORMAT_S20_3BE,
|
||||
GST_AUDIO_FORMAT_U20_3 = GST_AUDIO_FORMAT_U20_3BE,
|
||||
GST_AUDIO_FORMAT_S18_3 = GST_AUDIO_FORMAT_S18_3BE,
|
||||
GST_AUDIO_FORMAT_U18_3 = GST_AUDIO_FORMAT_U18_3BE,
|
||||
GST_AUDIO_FORMAT_F32 = GST_AUDIO_FORMAT_F32_BE,
|
||||
GST_AUDIO_FORMAT_F64 = GST_AUDIO_FORMAT_F64_BE
|
||||
#elif G_BYTE_ORDER == G_LITTLE_ENDIAN
|
||||
GST_AUDIO_FORMAT_S16 = GST_AUDIO_FORMAT_S16_LE,
|
||||
GST_AUDIO_FORMAT_U16 = GST_AUDIO_FORMAT_U16_LE,
|
||||
GST_AUDIO_FORMAT_S24 = GST_AUDIO_FORMAT_S24_LE,
|
||||
GST_AUDIO_FORMAT_U24 = GST_AUDIO_FORMAT_U24_LE,
|
||||
GST_AUDIO_FORMAT_S32 = GST_AUDIO_FORMAT_S32_LE,
|
||||
GST_AUDIO_FORMAT_U32 = GST_AUDIO_FORMAT_U32_LE,
|
||||
GST_AUDIO_FORMAT_S24_3 = GST_AUDIO_FORMAT_S24_3LE,
|
||||
GST_AUDIO_FORMAT_U24_3 = GST_AUDIO_FORMAT_U24_3LE,
|
||||
GST_AUDIO_FORMAT_S20_3 = GST_AUDIO_FORMAT_S20_3LE,
|
||||
GST_AUDIO_FORMAT_U20_3 = GST_AUDIO_FORMAT_U20_3LE,
|
||||
GST_AUDIO_FORMAT_S18_3 = GST_AUDIO_FORMAT_S18_3LE,
|
||||
GST_AUDIO_FORMAT_U18_3 = GST_AUDIO_FORMAT_U18_3LE,
|
||||
GST_AUDIO_FORMAT_F32 = GST_AUDIO_FORMAT_F32_LE,
|
||||
GST_AUDIO_FORMAT_F64 = GST_AUDIO_FORMAT_F64_LE
|
||||
#endif
|
||||
} GstAudioFormat;
|
||||
|
||||
/* FIXME: need GTypes */
|
||||
typedef struct _GstAudioFormatInfo GstAudioFormatInfo;
|
||||
typedef struct _GstAudioInfo GstAudioInfo;
|
||||
|
||||
/**
|
||||
* GstAudioFormatFlags:
|
||||
* @GST_AUDIO_FORMAT_FLAG_INTEGER: integer samples
|
||||
* @GST_AUDIO_FORMAT_FLAG_FLOAT: float samples
|
||||
* @GST_AUDIO_FORMAT_FLAG_SIGNED: signed samples
|
||||
* @GST_AUDIO_FORMAT_FLAG_COMPLEX: complex layout
|
||||
*
|
||||
* The different audio flags that a format info can have.
|
||||
*
|
||||
* Since: 0.10.36
|
||||
*/
|
||||
typedef enum
|
||||
{
|
||||
GST_AUDIO_FORMAT_FLAG_INTEGER = (1 << 0),
|
||||
GST_AUDIO_FORMAT_FLAG_FLOAT = (1 << 1),
|
||||
GST_AUDIO_FORMAT_FLAG_SIGNED = (1 << 2),
|
||||
GST_AUDIO_FORMAT_FLAG_COMPLEX = (1 << 4)
|
||||
} GstAudioFormatFlags;
|
||||
|
||||
/**
|
||||
* GstAudioFormatInfo:
|
||||
* @format: #GstAudioFormat
|
||||
* @name: string representation of the format
|
||||
* @flags: #GstAudioFormatFlags
|
||||
* @endianness: the endianness
|
||||
* @width: amount of bits used for one sample
|
||||
* @depth: amount of valid bits in @width
|
||||
* @silence: @width/8 bytes with 1 silent sample
|
||||
*
|
||||
* Information for an audio format.
|
||||
*
|
||||
* Since: 0.10.36
|
||||
*/
|
||||
struct _GstAudioFormatInfo {
|
||||
GstAudioFormat format;
|
||||
const gchar * name;
|
||||
GstAudioFormatFlags flags;
|
||||
gint endianness;
|
||||
gint width;
|
||||
gint depth;
|
||||
guint8 silence[8];
|
||||
/*< private >*/
|
||||
guint padding_i[4];
|
||||
gpointer padding_p[4];
|
||||
};
|
||||
|
||||
#define GST_AUDIO_FORMAT_INFO_FORMAT(info) ((info)->format)
|
||||
#define GST_AUDIO_FORMAT_INFO_NAME(info) ((info)->name)
|
||||
#define GST_AUDIO_FORMAT_INFO_FLAGS(info) ((info)->flags)
|
||||
|
||||
// FIXME: fix IS macros (make boolean)
|
||||
#define GST_AUDIO_FORMAT_INFO_IS_INTEGER(info) ((info)->flags & GST_AUDIO_FORMAT_FLAG_INTEGER)
|
||||
#define GST_AUDIO_FORMAT_INFO_IS_FLOAT(info) ((info)->flags & GST_AUDIO_FORMAT_FLAG_FLOAT)
|
||||
#define GST_AUDIO_FORMAT_INFO_IS_SIGNED(info) ((info)->flags & GST_AUDIO_FORMAT_FLAG_SIGNED)
|
||||
|
||||
#define GST_AUDIO_FORMAT_INFO_ENDIANNESS(info) ((info)->endianness)
|
||||
#define GST_AUDIO_FORMAT_INFO_IS_LE(info) ((info)->endianness == G_LITTLE_ENDIAN)
|
||||
#define GST_AUDIO_FORMAT_INFO_IS_BE(info) ((info)->endianness == G_BIG_ENDIAN)
|
||||
#define GST_AUDIO_FORMAT_INFO_WIDTH(info) ((info)->width)
|
||||
#define GST_AUDIO_FORMAT_INFO_DEPTH(info) ((info)->depth)
|
||||
|
||||
const GstAudioFormatInfo * gst_audio_format_get_info (GstAudioFormat format) G_GNUC_CONST;
|
||||
|
||||
/**
|
||||
* GstAudioFlags:
|
||||
* @GST_AUDIO_FLAG_NONE: no valid flag
|
||||
* @GST_AUDIO_FLAG_DEFAULT_POSITIONS: unpositioned audio layout, position array
|
||||
* contains the default layout (meaning that the channel layout was not
|
||||
* explicitly specified in the caps)
|
||||
*
|
||||
* Extra audio flags
|
||||
*
|
||||
* Since: 0.10.36
|
||||
*/
|
||||
typedef enum {
|
||||
GST_AUDIO_FLAG_NONE = 0,
|
||||
GST_AUDIO_FLAG_DEFAULT_POSITIONS = (1 << 0)
|
||||
} GstAudioFlags;
|
||||
|
||||
/**
|
||||
* GstAudioInfo:
|
||||
* @finfo: the format info of the audio
|
||||
* @flags: additional audio flags
|
||||
* @rate: the audio sample rate
|
||||
* @channels: the number of channels
|
||||
* @bpf: the number of bytes for one frame, this is the size of one
|
||||
* sample * @channels
|
||||
* @positions: the positions for each channel
|
||||
*
|
||||
* Information describing audio properties. This information can be filled
|
||||
* in from GstCaps with gst_audio_info_from_caps().
|
||||
*
|
||||
* Use the provided macros to access the info in this structure.
|
||||
*
|
||||
* Since: 0.10.36
|
||||
*/
|
||||
struct _GstAudioInfo {
|
||||
const GstAudioFormatInfo *finfo;
|
||||
GstAudioFlags flags;
|
||||
gint rate;
|
||||
gint channels;
|
||||
gint bpf;
|
||||
GstAudioChannelPosition position[64];
|
||||
};
|
||||
|
||||
#define GST_AUDIO_INFO_FORMAT(i) (GST_AUDIO_FORMAT_INFO_FORMAT((i)->finfo))
|
||||
#define GST_AUDIO_INFO_NAME(i) (GST_AUDIO_FORMAT_INFO_NAME((i)->finfo))
|
||||
#define GST_AUDIO_INFO_WIDTH(i) (GST_AUDIO_FORMAT_INFO_WIDTH((i)->finfo))
|
||||
#define GST_AUDIO_INFO_DEPTH(i) (GST_AUDIO_FORMAT_INFO_DEPTH((i)->finfo))
|
||||
#define GST_AUDIO_INFO_BPS(info) (GST_AUDIO_INFO_DEPTH(info) >> 3)
|
||||
|
||||
#define GST_AUDIO_INFO_FLAGS(info) ((info)->flags)
|
||||
#define GST_AUDIO_INFO_HAS_DEFAULT_POSITIONS(info) ((info)->flags & GST_AUDIO_FLAG_DEFAULT_POSITIONS)
|
||||
|
||||
#define GST_AUDIO_INFO_RATE(info) ((info)->rate)
|
||||
#define GST_AUDIO_INFO_CHANNELS(info) ((info)->channels)
|
||||
#define GST_AUDIO_INFO_BPF(info) ((info)->bpf)
|
||||
#define GST_AUDIO_INFO_POSITION(info,c) ((info)->position[c])
|
||||
|
||||
#if 0
|
||||
void gst_audio_info_init (GstAudioInfo *info);
|
||||
void gst_audio_info_set_format (GstAudioInfo *info, GstAudioFormat format,
|
||||
gint rate, gint channels);
|
||||
#endif
|
||||
/* FIXME: need alloc/free for GstAudioInfo */
|
||||
gboolean gst_audio_info_from_caps (GstAudioInfo *info, const GstCaps *caps);
|
||||
GstCaps * gst_audio_info_to_caps (GstAudioInfo *info);
|
||||
|
||||
gboolean gst_audio_info_convert (GstAudioInfo * info,
|
||||
GstFormat src_fmt, gint64 src_val,
|
||||
GstFormat dest_fmt, gint64 * dest_val);
|
||||
|
||||
/* For people that are looking at this source: the purpose of these defines is
|
||||
* to make GstCaps a bit easier, in that you don't have to know all of the
|
||||
* properties that need to be defined. you can just use these macros. currently
|
||||
|
|
|
|||
|
|
@ -292,6 +292,32 @@ gst_audio_get_channel_positions (GstStructure * str)
|
|||
return pos;
|
||||
}
|
||||
|
||||
void priv_gst_audio_info_fill_default_channel_positions (GstAudioInfo * info);
|
||||
|
||||
void
|
||||
priv_gst_audio_info_fill_default_channel_positions (GstAudioInfo * info)
|
||||
{
|
||||
guint channels, i;
|
||||
|
||||
g_assert (info != NULL);
|
||||
|
||||
channels = GST_AUDIO_INFO_CHANNELS (info);
|
||||
|
||||
g_assert (channels > 0);
|
||||
|
||||
if (channels <= NUM_DEF_CHANS) {
|
||||
/* just return some default channel layout if we have one */
|
||||
for (i = 0; i < channels; ++i)
|
||||
info->position[i] = default_positions[channels - 1][i];
|
||||
} else {
|
||||
/* for many many channels, the positions are always NONE */
|
||||
for (i = 0; i < G_N_ELEMENTS (info->position); i++)
|
||||
info->position[i] = GST_AUDIO_CHANNEL_POSITION_NONE;
|
||||
}
|
||||
|
||||
info->flags |= GST_AUDIO_FLAG_DEFAULT_POSITIONS;
|
||||
}
|
||||
|
||||
/**
|
||||
* gst_audio_set_channel_positions:
|
||||
* @str: A #GstStructure to set channel positions on.
|
||||
|
|
|
|||
|
|
@ -17,12 +17,12 @@
|
|||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#ifndef __GST_AUDIO_MULTICHANNEL_H__
|
||||
#define __GST_AUDIO_MULTICHANNEL_H__
|
||||
|
||||
#include <gst/audio/audio.h>
|
||||
#include <gst/audio/audio-enumtypes.h>
|
||||
|
||||
#ifndef __GST_AUDIO_MULTICHANNEL_H__
|
||||
#define __GST_AUDIO_MULTICHANNEL_H__
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
/**
|
||||
|
|
|
|||
Loading…
Reference in a new issue