#include <gst/audio/audio.h>
#include <string.h>
+GST_DEBUG_CATEGORY_STATIC (audio_convert_debug);
+#define GST_CAT_DEFAULT (audio_convert_debug)
+
#if 0
static void
print_caps (GstCaps *caps)
gint rate;
gint channels;
- gboolean is_float; /* true iff a pad is carrying float data */
-
/* int audio caps */
gint depth;
gboolean is_signed;
-
- /* float audio caps */
- guint buffer_frames;
};
struct _GstAudioConvert {
/* properties */
gboolean aggressive;
- guint min_rate, max_rate, rate_steps;
/* caps: 0 = sink, 1 = src, so always convert from 0 to 1 */
gboolean caps_set[2];
gint endian[2];
gint sign[2];
gint depth[2]; /* in BITS */
- gint width[2]; /* in BYTES */
+ gint width[2]; /* in BITS */
gint rate[2];
gint channels[2];
enum {
ARG_0,
ARG_AGGRESSIVE,
- ARG_MIN_RATE,
- ARG_MAX_RATE,
- ARG_RATE_STEPS
};
static GstElementClass *parent_class = NULL;
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (
- GST_AUDIO_INT_PAD_TEMPLATE_CAPS "; "
- GST_AUDIO_FLOAT_PAD_TEMPLATE_CAPS
+ GST_AUDIO_INT_PAD_TEMPLATE_CAPS
)
);
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (
- GST_AUDIO_INT_PAD_TEMPLATE_CAPS "; "
- GST_AUDIO_FLOAT_PAD_TEMPLATE_CAPS
+ GST_AUDIO_INT_PAD_TEMPLATE_CAPS
)
);
"GstAudioConvert",
&audio_convert_info, 0);
}
+ GST_DEBUG_CATEGORY_INIT (audio_convert_debug, "audioconvert", 0, "audio conversion element");
+
return audio_convert_type;
}
"if true, tries any possible format before giving up",
FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
- g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_MIN_RATE,
- g_param_spec_uint("min-rate", "minimum rate allowed",
- "defines the lower bound for the audio rate",
- 0, G_MAXUINT, 8000, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+ gstelement_class->change_state = gst_audio_convert_change_state;
+}
+
+static GstCaps *
+gst_audioconvert_getcaps (GstPad *pad)
+{
+ GstAudioConvert *this;
+ GstCaps *othercaps;
+ GstCaps *caps;
+ GstPad *otherpad;
+ int i;
- g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_MAX_RATE,
- g_param_spec_uint("max-rate", "maximum rate allowed",
- "defines the upper bound for the audio rate",
- 0, G_MAXUINT, 192000, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+ GST_DEBUG ("gst_audioconvert_getcaps");
+ this = GST_AUDIO_CONVERT (gst_pad_get_parent (pad));
- g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_RATE_STEPS,
- g_param_spec_uint("rate-steps", "rate search steps",
- "the number of steps used for searching between min and max rates",
- 0, G_MAXUINT, 32, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+ otherpad = (pad == this->src) ? this->sink : this->src;
+ othercaps = gst_pad_get_allowed_caps (otherpad);
- gstelement_class->change_state = gst_audio_convert_change_state;
+ GST_DEBUG_CAPS ("othercaps are", othercaps);
+
+ caps = gst_caps_copy (othercaps);
+ for (i = 0; i < gst_caps_get_size (caps); i++) {
+ GstStructure *structure = gst_caps_get_structure (caps, i);
+
+ gst_audio_structure_set_int (structure, GST_AUDIO_FIELD_CHANNELS |
+ GST_AUDIO_FIELD_ENDIANNESS |
+ GST_AUDIO_FIELD_WIDTH |
+ GST_AUDIO_FIELD_DEPTH |
+ GST_AUDIO_FIELD_SIGNED);
+
+ /* FIXME:
+ * since gst_structure_set doesn't handle lists, we need to do lists
+ * manually; would be nice if this could be done more easily */
+ }
+ return caps;
}
static void
this->sink = gst_pad_new_from_template (
gst_static_pad_template_get (&gst_audio_convert_sink_template), "sink");
gst_pad_set_link_function (this->sink, gst_audio_convert_link);
+ gst_pad_set_getcaps_function (this->sink, gst_audioconvert_getcaps);
gst_element_add_pad (GST_ELEMENT(this), this->sink);
/* srcpad */
this->src = gst_pad_new_from_template (
gst_static_pad_template_get (&gst_audio_convert_src_template), "src");
gst_pad_set_link_function (this->src, gst_audio_convert_link);
+ gst_pad_set_getcaps_function (this->src, gst_audioconvert_getcaps);
gst_element_add_pad (GST_ELEMENT(this), this->src);
gst_pad_set_chain_function(this->sink, gst_audio_convert_chain);
case ARG_AGGRESSIVE:
audio_convert->aggressive = g_value_get_boolean (value);
break;
- case ARG_MIN_RATE:
- audio_convert->min_rate = g_value_get_uint (value);
- break;
- case ARG_MAX_RATE:
- audio_convert->max_rate = g_value_get_uint (value);
- break;
- case ARG_RATE_STEPS:
- audio_convert->rate_steps = g_value_get_uint (value);
- break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
case ARG_AGGRESSIVE:
g_value_set_boolean (value, audio_convert->aggressive);
break;
- case ARG_MIN_RATE:
- g_value_set_uint (value, audio_convert->min_rate);
- break;
- case ARG_MAX_RATE:
- g_value_set_uint (value, audio_convert->max_rate);
- break;
- case ARG_RATE_STEPS:
- g_value_set_uint (value, audio_convert->rate_steps);
- break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
GstBuffer *buf = GST_BUFFER (_data);
GstAudioConvert *this;
- g_return_if_fail(GST_IS_PAD(pad));
- g_return_if_fail(buf != NULL);
- g_return_if_fail(GST_IS_AUDIO_CONVERT(GST_OBJECT_PARENT (pad)));
- this = GST_AUDIO_CONVERT(GST_OBJECT_PARENT (pad));
+ g_return_if_fail (GST_IS_PAD (pad));
+ g_return_if_fail (buf != NULL);
+ g_return_if_fail (GST_IS_AUDIO_CONVERT (GST_OBJECT_PARENT (pad)));
+ this = GST_AUDIO_CONVERT (GST_OBJECT_PARENT (pad));
/* FIXME */
if (GST_IS_EVENT (buf)) {
g_return_val_if_fail(GST_IS_AUDIO_CONVERT(GST_OBJECT_PARENT (pad)), GST_PAD_LINK_REFUSED);
this = GST_AUDIO_CONVERT(GST_OBJECT_PARENT (pad));
+ /* nr is 0 for sink pad, 1 for src pad */
nr = (pad == this->sink) ? 0 : (pad == this->src) ? 1 : -1;
g_assert (nr > -1);
}
if (!ret) {
+ GST_DEBUG ("could not get some values from structure");
return GST_PAD_LINK_REFUSED;
}
- /* we can't convert rate changes yet */
+ /* we don't convert rate changes, this is done by audioscale */
+ /* 1 - nr is "the other caps" */
if ((this->caps_set[1 - nr]) &&
(rate != this->rate[1 - nr])) {
GstPad *otherpad;
- GstCaps *othercaps;
GstPadLinkReturn ret;
-
+
otherpad = (nr) ? this->src : this->sink;
- if (gst_pad_is_negotiated (otherpad)) {
- othercaps = gst_caps_copy (gst_pad_get_negotiated_caps (otherpad));
+ if (gst_pad_is_negotiated (otherpad))
+ {
+ GstCaps *othercaps = gst_caps_copy (othercaps);
gst_caps_set_simple (othercaps, "rate", G_TYPE_INT, rate, NULL);
ret = gst_pad_try_set_caps (otherpad, othercaps);
- if (GST_PAD_LINK_FAILED (ret)) return ret;
-
- this->rate[1 - nr] = rate;
+ if (GST_PAD_LINK_FAILED (ret))
+ {
+ GST_DEBUG ("could not gst_pad_try_set_caps on otherpad using othercaps");
+ return GST_PAD_LINK_REFUSED;
+ }
}
+ this->rate[1 - nr] = rate;
}
+ GST_DEBUG ("setting caps_set[%d] to TRUE", nr);
this->caps_set[nr] = TRUE;
this->rate[nr] = rate;
this->channels[nr] = channels;
this->sign[nr] = sign;
this->endian[nr] = endianness;
this->depth[nr] = depth;
- this->width[nr] = width / 8;
+ this->width[nr] = width;
return GST_PAD_LINK_OK;
}
}
}
-/*** ACTUAL WORK **************************************************************/
-
-#if 0
-static GstCaps *
-make_caps (gint endianness, gboolean sign, gint depth, gint width, gint rate, gint channels)
-{
- GstCaps *caps;
-
- caps = gst_caps_new_simple ("audio/x-raw-int",
- "signed", G_TYPE_BOOLEAN, sign,
- "depth", G_TYPE_INT, depth,
- "width", G_TYPE_INT, width * 8,
- "rate", G_TYPE_INT, rate,
- "channels", G_TYPE_INT, channels, NULL);
-
- if (width != 1) {
- gst_caps_set_simple (caps,
- "endianness", G_TYPE_INT, endianness, NULL);
- }
-
- return caps;
-}
-
-static gboolean
-gst_audio_convert_set_caps (GstPad *pad)
-{
- GstCaps *caps;
- gint nr;
- GstPadLinkReturn ret;
- GstAudioConvert *this;
- gint channels, endianness, depth, width; /*, rate; */
- gboolean sign;
-
- this = GST_AUDIO_CONVERT (GST_PAD_PARENT (pad));
- nr = (this->src == pad) ? 1 : (this->sink == pad) ? 0 : -1;
- g_assert (nr > -1);
-
- /* try 1:1 first */
- caps = make_caps (this->endian[1 - nr], this->sign[1 - nr], this->depth[1 - nr],
- this->width[1 - nr], this->rate[1 - nr], this->channels[1 - nr]);
- ret = gst_pad_try_set_caps (pad, caps);
- if (ret == GST_PAD_LINK_DONE || ret == GST_PAD_LINK_OK) goto success;
-
- /* now do some iterating, this is gonna be fun */
- /* stereo is most important */
- channels = 2;
- while (channels > 0) {
-
- /* endianness comes second */
- endianness = 0;
- do {
- if (endianness == G_BIG_ENDIAN) break;
- endianness = endianness == 0 ? G_LITTLE_ENDIAN : G_BIG_ENDIAN;
-
- /* signedness */
- sign = TRUE;
- do {
- sign = !sign;
-
- /* width */
- for (width = 4; width >= 1; width--) {
-
- /* depth */
- for (depth = width * 8; depth >= 1; depth -= this->aggressive ? 1 : 8) {
-
- /* rate - not supported yet*/
-
- caps = make_caps (endianness, sign, depth, width, this->rate[1 - nr], channels);
- ret = gst_pad_try_set_caps (pad, caps);
- if (ret == GST_PAD_LINK_DONE || ret == GST_PAD_LINK_OK)
- goto success;
- }
- }
- } while (sign != TRUE);
- } while TRUE;
- channels--;
- }
-
- return FALSE;
-
- success:
- g_assert (gst_audio_convert_link (pad, caps) == GST_PAD_LINK_OK);
- return TRUE;
-}
-#endif
-
/* return a writable buffer of size which ideally is the same as before
- You must unref the new buffer
- The size of the old buffer is undefined after this operation */
gint32 *dest;
guint8 *src;
- if (this->width[0] == 4 && this->depth[0] == 32 &&
+ if (this->width[0] == 32 && this->depth[0] == 32 &&
this->endian[0] == G_BYTE_ORDER && this->sign[0] == TRUE)
return buf;
- ret = gst_audio_convert_get_buffer (buf, buf->size * 4 / this->width[0]);
+ ret = gst_audio_convert_get_buffer (buf, buf->size * 32 / this->width[0]);
count = ret->size / 4;
- src = buf->data + (count - 1) * this->width[0];
+ src = buf->data + (count - 1) * (this->width[0] / 8);
dest = (gint32 *) ret->data;
for (i = count - 1; i >= 0; i--) {
switch (this->width[0]) {
- case 1:
+ case 8:
if (this->sign[0]) {
CONVERT_TO (cur, src, gint8, this->sign[0], this->endian[0], GINT8_IDENTITY, GINT8_IDENTITY);
} else {
CONVERT_TO (cur, src, guint16, this->sign[0], this->endian[0], GUINT8_IDENTITY, GUINT8_IDENTITY);
}
break;
- case 2:
+ case 16:
if (this->sign[0]) {
CONVERT_TO (cur, src, gint16, this->sign[0], this->endian[0], GINT16_FROM_LE, GINT16_FROM_BE);
} else {
CONVERT_TO (cur, src, guint16, this->sign[0], this->endian[0], GUINT16_FROM_LE, GUINT16_FROM_BE);
}
break;
- case 4:
+ case 32:
if (this->sign[0]) {
CONVERT_TO (cur, src, gint32, this->sign[0], this->endian[0], GINT32_FROM_LE, GINT32_FROM_BE);
} else {
guint count, i;
gint32 *src;
- if (this->width[1] == 4 && this->depth[1] == 32 &&
+ if (this->width[1] == 32 && this->depth[1] == 32 &&
this->endian[1] == G_BYTE_ORDER && this->sign[1] == TRUE)
return buf;
- ret = gst_audio_convert_get_buffer (buf, buf->size * this->width[1] / 4);
+ ret = gst_audio_convert_get_buffer (buf, buf->size * this->width[1] / 32);
dest = ret->data;
src = (gint32 *) buf->data;
- count = ret->size / this->width[1];
+ count = ret->size / (this->width[1] / 8);
for (i = 0; i < count; i++) {
gint32 int_value = *src;
src++;
switch (this->width[1]) {
- case 1:
+ case 8:
if (this->sign[1]) {
POPULATE (gint8, GINT8_IDENTITY, GINT8_IDENTITY);
} else {
POPULATE (guint8, GUINT8_IDENTITY, GUINT8_IDENTITY);
}
break;
- case 2:
+ case 16:
if (this->sign[1]) {
POPULATE (gint16, GINT16_TO_BE, GINT16_TO_LE);
} else {
POPULATE (guint16, GUINT16_TO_BE, GUINT16_TO_LE);
}
break;
- case 4:
+ case 32:
if (this->sign[1]) {
POPULATE (gint32, GINT32_TO_BE, GINT32_TO_LE);
} else {
{
if (!gst_element_register (plugin, "audioconvert", GST_RANK_NONE, GST_TYPE_AUDIO_CONVERT))
return FALSE;
-
+ if (!gst_plugin_load ("gstaudio")) return FALSE;
+
return TRUE;
}
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