#include <gst/gststructure.h>
+#include <string.h>
+
/**
* gst_audio_frame_byte_size:
* @pad: the #GstPad to get the caps from
}
#endif /* GST_REMOVE_DEPRECATED */
+#define SINT (GST_AUDIO_FORMAT_FLAG_INTEGER | GST_AUDIO_FORMAT_FLAG_SIGNED)
+#define UINT (GST_AUDIO_FORMAT_FLAG_INTEGER)
+
+#define MAKE_FORMAT(str,flags,end,width,depth,silent) \
+ { GST_AUDIO_FORMAT_ ##str, G_STRINGIFY(str), flags, end, width, depth, silent }
+
+#define SILENT_0 { 0, 0, 0, 0, 0, 0, 0, 0 }
+#define SILENT_U8 { 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80 }
+#define SILENT_U16LE { 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80 }
+#define SILENT_U16BE { 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00 }
+#define SILENT_U24_32LE { 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x80, 0x00 }
+#define SILENT_U24_32BE { 0x00, 0x80, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00 }
+#define SILENT_U32LE { 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x80 }
+#define SILENT_U32BE { 0x80, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 }
+#define SILENT_U24LE { 0x00, 0x00, 0x80, 0x00, 0x00, 0x80 }
+#define SILENT_U24BE { 0x80, 0x00, 0x00, 0x80, 0x00, 0x00 }
+#define SILENT_U20LE { 0x00, 0x00, 0x08, 0x00, 0x00, 0x08 }
+#define SILENT_U20BE { 0x08, 0x00, 0x00, 0x08, 0x00, 0x00 }
+#define SILENT_U18LE { 0x00, 0x00, 0x02, 0x00, 0x00, 0x02 }
+#define SILENT_U18BE { 0x02, 0x00, 0x00, 0x02, 0x00, 0x00 }
+
+static GstAudioFormatInfo formats[] = {
+ {GST_AUDIO_FORMAT_UNKNOWN, "UNKNOWN", 0, 0, 0, 0},
+ /* 8 bit */
+ MAKE_FORMAT (S8, SINT, 0, 8, 8, SILENT_0),
+ MAKE_FORMAT (U8, UINT, 0, 8, 8, SILENT_U8),
+ /* 16 bit */
+ MAKE_FORMAT (S16LE, SINT, G_LITTLE_ENDIAN, 16, 16, SILENT_0),
+ MAKE_FORMAT (S16BE, SINT, G_BIG_ENDIAN, 16, 16, SILENT_0),
+ MAKE_FORMAT (U16LE, UINT, G_LITTLE_ENDIAN, 16, 16, SILENT_U16LE),
+ MAKE_FORMAT (U16BE, UINT, G_BIG_ENDIAN, 16, 16, SILENT_U16BE),
+ /* 24 bit in low 3 bytes of 32 bits */
+ MAKE_FORMAT (S24_32LE, SINT, G_LITTLE_ENDIAN, 32, 24, SILENT_0),
+ MAKE_FORMAT (S24_32BE, SINT, G_BIG_ENDIAN, 32, 24, SILENT_0),
+ MAKE_FORMAT (U24_32LE, UINT, G_LITTLE_ENDIAN, 32, 24, SILENT_U24_32LE),
+ MAKE_FORMAT (U24_32BE, UINT, G_BIG_ENDIAN, 32, 24, SILENT_U24_32BE),
+ /* 32 bit */
+ MAKE_FORMAT (S32LE, SINT, G_LITTLE_ENDIAN, 32, 32, SILENT_0),
+ MAKE_FORMAT (S32BE, SINT, G_BIG_ENDIAN, 32, 32, SILENT_0),
+ MAKE_FORMAT (U32LE, UINT, G_LITTLE_ENDIAN, 32, 32, SILENT_U32LE),
+ MAKE_FORMAT (U32BE, UINT, G_BIG_ENDIAN, 32, 32, SILENT_U32BE),
+ /* 24 bit in 3 bytes */
+ MAKE_FORMAT (S24LE, SINT, G_LITTLE_ENDIAN, 24, 24, SILENT_0),
+ MAKE_FORMAT (S24BE, SINT, G_BIG_ENDIAN, 24, 24, SILENT_0),
+ MAKE_FORMAT (U24LE, UINT, G_LITTLE_ENDIAN, 24, 24, SILENT_U24LE),
+ MAKE_FORMAT (U24BE, UINT, G_BIG_ENDIAN, 24, 24, SILENT_U24BE),
+ /* 20 bit in 3 bytes */
+ MAKE_FORMAT (S20LE, SINT, G_LITTLE_ENDIAN, 24, 20, SILENT_0),
+ MAKE_FORMAT (S20BE, SINT, G_BIG_ENDIAN, 24, 20, SILENT_0),
+ MAKE_FORMAT (U20LE, UINT, G_LITTLE_ENDIAN, 24, 20, SILENT_U20LE),
+ MAKE_FORMAT (U20BE, UINT, G_BIG_ENDIAN, 24, 20, SILENT_U20BE),
+ /* 18 bit in 3 bytes */
+ MAKE_FORMAT (S18LE, SINT, G_LITTLE_ENDIAN, 24, 18, SILENT_0),
+ MAKE_FORMAT (S18BE, SINT, G_BIG_ENDIAN, 24, 18, SILENT_0),
+ MAKE_FORMAT (U18LE, UINT, G_LITTLE_ENDIAN, 24, 18, SILENT_U18LE),
+ MAKE_FORMAT (U18BE, UINT, G_BIG_ENDIAN, 24, 18, SILENT_U18BE),
+ /* float */
+ MAKE_FORMAT (F32LE, GST_AUDIO_FORMAT_FLAG_FLOAT, G_LITTLE_ENDIAN, 32, 32,
+ SILENT_0),
+ MAKE_FORMAT (F32BE, GST_AUDIO_FORMAT_FLAG_FLOAT, G_BIG_ENDIAN, 32, 32,
+ SILENT_0),
+ MAKE_FORMAT (F64LE, GST_AUDIO_FORMAT_FLAG_FLOAT, G_LITTLE_ENDIAN, 64, 64,
+ SILENT_0),
+ MAKE_FORMAT (F64BE, GST_AUDIO_FORMAT_FLAG_FLOAT, G_BIG_ENDIAN, 64, 64,
+ SILENT_0)
+};
+
+static GstAudioFormat
+gst_audio_format_from_caps_structure (const GstStructure * s)
+{
+ gint endianness, width, depth;
+ guint i;
+
+ if (gst_structure_has_name (s, "audio/x-raw-int")) {
+ gboolean sign;
+
+ if (!gst_structure_get_boolean (s, "signed", &sign))
+ goto missing_field_signed;
+
+ if (!gst_structure_get_int (s, "endianness", &endianness))
+ goto missing_field_endianness;
+
+ if (!gst_structure_get_int (s, "width", &width))
+ goto missing_field_width;
+
+ if (!gst_structure_get_int (s, "depth", &depth))
+ goto missing_field_depth;
+
+ for (i = 0; i < G_N_ELEMENTS (formats); i++) {
+ if (GST_AUDIO_FORMAT_INFO_IS_INTEGER (&formats[i]) &&
+ sign == GST_AUDIO_FORMAT_INFO_IS_SIGNED (&formats[i]) &&
+ GST_AUDIO_FORMAT_INFO_ENDIANNESS (&formats[i]) == endianness &&
+ GST_AUDIO_FORMAT_INFO_WIDTH (&formats[i]) == width &&
+ GST_AUDIO_FORMAT_INFO_DEPTH (&formats[i]) == depth) {
+ return GST_AUDIO_FORMAT_INFO_FORMAT (&formats[i]);
+ }
+ }
+ } else if (gst_structure_has_name (s, "audio/x-raw-float")) {
+ /* fallbacks are for backwards compatibility (is this needed at all?) */
+ if (!gst_structure_get_int (s, "endianness", &endianness)) {
+ GST_WARNING ("float audio caps without endianness %" GST_PTR_FORMAT, s);
+ endianness = G_BYTE_ORDER;
+ }
+
+ if (!gst_structure_get_int (s, "width", &width)) {
+ GST_WARNING ("float audio caps without width %" GST_PTR_FORMAT, s);
+ width = 32;
+ }
+
+ for (i = 0; i < G_N_ELEMENTS (formats); i++) {
+ if (GST_AUDIO_FORMAT_INFO_IS_FLOAT (&formats[i]) &&
+ GST_AUDIO_FORMAT_INFO_ENDIANNESS (&formats[i]) == endianness &&
+ GST_AUDIO_FORMAT_INFO_WIDTH (&formats[i]) == width) {
+ return GST_AUDIO_FORMAT_INFO_FORMAT (&formats[i]);
+ }
+ }
+ }
+
+ /* no match */
+ return GST_AUDIO_FORMAT_UNKNOWN;
+
+missing_field_signed:
+ {
+ GST_ERROR ("missing 'signed' field in audio caps %" GST_PTR_FORMAT, s);
+ return GST_AUDIO_FORMAT_UNKNOWN;
+ }
+missing_field_endianness:
+ {
+ GST_ERROR ("missing 'endianness' field in audio caps %" GST_PTR_FORMAT, s);
+ return GST_AUDIO_FORMAT_UNKNOWN;
+ }
+missing_field_depth:
+ {
+ GST_ERROR ("missing 'depth' field in audio caps %" GST_PTR_FORMAT, s);
+ return GST_AUDIO_FORMAT_UNKNOWN;
+ }
+missing_field_width:
+ {
+ GST_ERROR ("missing 'width' field in audio caps %" GST_PTR_FORMAT, s);
+ return GST_AUDIO_FORMAT_UNKNOWN;
+ }
+}
+
+/* FIXME: remove these if we don't actually go for deep alloc positions */
+void
+gst_audio_info_init (GstAudioInfo * info)
+{
+ memset (info, 0, sizeof (GstAudioInfo));
+}
+
+void
+gst_audio_info_clear (GstAudioInfo * info)
+{
+ memset (info, 0, sizeof (GstAudioInfo));
+}
+
+GstAudioInfo *
+gst_audio_info_copy (GstAudioInfo * info)
+{
+ return (GstAudioInfo *) g_slice_copy (sizeof (GstAudioInfo), info);
+}
+
+void
+gst_audio_info_free (GstAudioInfo * info)
+{
+ g_slice_free (GstAudioInfo, info);
+}
+
+static void
+gst_audio_info_set_format (GstAudioInfo * info, GstAudioFormat format,
+ gint rate, gint channels)
+{
+ const GstAudioFormatInfo *finfo;
+
+ g_return_if_fail (info != NULL);
+ g_return_if_fail (format != GST_AUDIO_FORMAT_UNKNOWN);
+
+ finfo = &formats[format];
+
+ info->flags = 0;
+ info->finfo = finfo;
+ info->rate = rate;
+ info->channels = channels;
+ info->bpf = (finfo->width * channels) / 8;
+}
+
+/* from multichannel.c */
+void priv_gst_audio_info_fill_default_channel_positions (GstAudioInfo * info);
+
+/**
+ * gst_audio_info_from_caps:
+ * @info: a #GstAudioInfo
+ * @caps: a #GstCaps
+ *
+ * Parse @caps and update @info.
+ *
+ * Returns: TRUE if @caps could be parsed
+ *
+ * Since: 0.10.36
+ */
+gboolean
+gst_audio_info_from_caps (GstAudioInfo * info, const GstCaps * caps)
+{
+ GstStructure *str;
+ GstAudioFormat format;
+ gint rate, channels;
+ const GValue *pos_val_arr, *pos_val_entry;
+ gint i;
+
+ g_return_val_if_fail (info != NULL, FALSE);
+ g_return_val_if_fail (caps != NULL, FALSE);
+ g_return_val_if_fail (gst_caps_is_fixed (caps), FALSE);
+
+ GST_DEBUG ("parsing caps %" GST_PTR_FORMAT, caps);
+
+ str = gst_caps_get_structure (caps, 0);
+
+ format = gst_audio_format_from_caps_structure (str);
+ if (format == GST_AUDIO_FORMAT_UNKNOWN)
+ goto unknown_format;
+
+ if (!gst_structure_get_int (str, "rate", &rate))
+ goto no_rate;
+ if (!gst_structure_get_int (str, "channels", &channels))
+ goto no_channels;
+
+ gst_audio_info_set_format (info, format, rate, channels);
+
+ pos_val_arr = gst_structure_get_value (str, "channel-positions");
+ if (pos_val_arr) {
+ if (channels <= G_N_ELEMENTS (info->position)) {
+ for (i = 0; i < channels; i++) {
+ pos_val_entry = gst_value_array_get_value (pos_val_arr, i);
+ info->position[i] = g_value_get_enum (pos_val_entry);
+ }
+ } else {
+ /* for that 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;
+ }
+ } else {
+ info->flags |= GST_AUDIO_FLAG_DEFAULT_POSITIONS;
+ priv_gst_audio_info_fill_default_channel_positions (info);
+ }
+
+ return TRUE;
+
+ /* ERROR */
+unknown_format:
+ {
+ GST_ERROR ("unknown format given");
+ return FALSE;
+ }
+no_rate:
+ {
+ GST_ERROR ("no rate property given");
+ return FALSE;
+ }
+no_channels:
+ {
+ GST_ERROR ("no channels property given");
+ return FALSE;
+ }
+}
+
+/**
+ * gst_audio_info_to_caps:
+ * @info: a #GstAudioInfo
+ *
+ * Convert the values of @info into a #GstCaps.
+ *
+ * Returns: (transfer full): the new #GstCaps containing the
+ * info of @info.
+ *
+ * Since: 0.10.36
+ */
+GstCaps *
+gst_audio_info_to_caps (GstAudioInfo * info)
+{
+ GstCaps *caps;
+
+ g_return_val_if_fail (info != NULL, NULL);
+ g_return_val_if_fail (info->finfo != NULL, NULL);
+ g_return_val_if_fail (info->finfo->format != GST_AUDIO_FORMAT_UNKNOWN, NULL);
+
+ if (GST_AUDIO_FORMAT_INFO_IS_INTEGER (info->finfo)) {
+ caps = gst_caps_new_simple ("audio/x-raw-int",
+ "width", G_TYPE_INT, GST_AUDIO_INFO_WIDTH (info),
+ "depth", G_TYPE_INT, GST_AUDIO_INFO_DEPTH (info),
+ "endianness", G_TYPE_INT,
+ GST_AUDIO_FORMAT_INFO_ENDIANNESS (info->finfo), "signed",
+ G_TYPE_BOOLEAN, GST_AUDIO_FORMAT_INFO_IS_SIGNED (info->finfo), "rate",
+ G_TYPE_INT, GST_AUDIO_INFO_RATE (info), "channels", G_TYPE_INT,
+ GST_AUDIO_INFO_CHANNELS (info), NULL);
+ } else if (GST_AUDIO_FORMAT_INFO_IS_FLOAT (info->finfo)) {
+ caps = gst_caps_new_simple ("audio/x-raw-float",
+ "width", G_TYPE_INT, GST_AUDIO_INFO_WIDTH (info),
+ "endianness", G_TYPE_INT,
+ GST_AUDIO_FORMAT_INFO_ENDIANNESS (info->finfo), "rate", G_TYPE_INT,
+ GST_AUDIO_INFO_RATE (info), "channels", G_TYPE_INT,
+ GST_AUDIO_INFO_CHANNELS (info), NULL);
+ } else {
+ GST_ERROR ("unknown audio format, neither integer nor float");
+ return NULL;
+ }
+
+ if (info->channels > 2) {
+ GValue pos_val_arr = { 0 }
+ , pos_val_entry = {
+ 0};
+ GstStructure *str;
+ gint i;
+
+ /* build gvaluearray from positions */
+ g_value_init (&pos_val_arr, GST_TYPE_ARRAY);
+ g_value_init (&pos_val_entry, GST_TYPE_AUDIO_CHANNEL_POSITION);
+ for (i = 0; i < info->channels; i++) {
+ /* if we have many many channels, all positions are NONE */
+ if (info->channels <= 64)
+ g_value_set_enum (&pos_val_entry, info->position[i]);
+ else
+ g_value_set_enum (&pos_val_entry, GST_AUDIO_CHANNEL_POSITION_NONE);
+
+ gst_value_array_append_value (&pos_val_arr, &pos_val_entry);
+ }
+ g_value_unset (&pos_val_entry);
+
+ /* add to structure */
+ str = gst_caps_get_structure (caps, 0);
+ gst_structure_set_value (str, "channel-positions", &pos_val_arr);
+ g_value_unset (&pos_val_arr);
+ }
+
+ return caps;
+}
+
+/**
+ * gst_audio_format_convert:
+ * @info: a #GstAudioInfo
+ * @src_format: #GstFormat of the @src_value
+ * @src_value: value to convert
+ * @dest_format: #GstFormat of the @dest_value
+ * @dest_value: pointer to destination value
+ *
+ * Converts among various #GstFormat types. This function handles
+ * GST_FORMAT_BYTES, GST_FORMAT_TIME, and GST_FORMAT_DEFAULT. For
+ * raw audio, GST_FORMAT_DEFAULT corresponds to audio frames. This
+ * function can be used to handle pad queries of the type GST_QUERY_CONVERT.
+ *
+ * Returns: TRUE if the conversion was successful.
+ *
+ * Since: 0.10.36
+ */
+gboolean
+gst_audio_info_convert (GstAudioInfo * info,
+ GstFormat src_fmt, gint64 src_val, GstFormat dest_fmt, gint64 * dest_val)
+{
+ gboolean res = TRUE;
+ gint bpf, rate;
+
+ GST_DEBUG ("converting value %" G_GINT64_FORMAT " from %s (%d) to %s (%d)",
+ src_val, gst_format_get_name (src_fmt), src_fmt,
+ gst_format_get_name (dest_fmt), dest_fmt);
+
+ if (src_fmt == dest_fmt || src_val == -1) {
+ *dest_val = src_val;
+ goto done;
+ }
+
+ /* get important info */
+ bpf = GST_AUDIO_INFO_BPF (info);
+ rate = GST_AUDIO_INFO_RATE (info);
+
+ if (bpf == 0 || rate == 0) {
+ GST_DEBUG ("no rate or bpf configured");
+ res = FALSE;
+ goto done;
+ }
+
+ switch (src_fmt) {
+ case GST_FORMAT_BYTES:
+ switch (dest_fmt) {
+ case GST_FORMAT_TIME:
+ *dest_val = GST_FRAMES_TO_CLOCK_TIME (src_val / bpf, rate);
+ break;
+ case GST_FORMAT_DEFAULT:
+ *dest_val = src_val / bpf;
+ break;
+ default:
+ res = FALSE;
+ break;
+ }
+ break;
+ case GST_FORMAT_DEFAULT:
+ switch (dest_fmt) {
+ case GST_FORMAT_TIME:
+ *dest_val = GST_FRAMES_TO_CLOCK_TIME (src_val, rate);
+ 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.
* @rate: sample rate.
* @frame_size: size of one audio frame in bytes.
*
- * Clip the the buffer to the given %GstSegment.
+ * Clip the buffer to the given %GstSegment.
*
* After calling this function the caller does not own a reference to
* @buffer anymore.
projects / framework / multimedia / gst-plugins-base0.10.git / blobdiff