#include "gstadder.h"
#include <gst/audio/audio.h>
#include <string.h> /* strcmp */
+/*#include <liboil/liboil.h>*/
/* highest positive/lowest negative x-bit value we can use for clamping */
#define MAX_INT_32 ((gint32) (0x7fffffff))
return adder_type;
}
-/* clipping versions */
+/* clipping versions
+ * FIXME: what about: oil_add_s16 (out, out, in, bytes / sizeof (type))
+ */
#define MAKE_FUNC(name,type,ttype,min,max) \
static void name (type *out, type *in, gint bytes) { \
gint i; \
}
/* non-clipping versions (for float) */
-#define MAKE_FUNC_NC(name,type,ttype) \
+#define MAKE_FUNC_NC(name,type) \
static void name (type *out, type *in, gint bytes) { \
gint i; \
for (i = 0; i < bytes / sizeof (type); i++) \
- out[i] = (ttype)out[i] + (ttype)in[i]; \
+ out[i] += in[i]; \
+}
+
+#if 0
+/* right now, the liboil function don't seems to be faster
+ * time gst-launch audiotestsrc num-buffers=50000 ! audio/x-raw-float ! adder name=m ! fakesink audiotestsrc num-buffers=50000 ! audio/x-raw-float ! m.
+ * time gst-launch audiotestsrc num-buffers=50000 ! audio/x-raw-float,width=32 ! adder name=m ! fakesink audiotestsrc num-buffers=50000 ! audio/x-raw-float,width=32 ! m.
+ */
+static void
+add_float32 (gfloat * out, gfloat * in, gint bytes)
+{
+ oil_add_f32 (out, out, in, bytes / sizeof (gfloat));
+}
+
+static void
+add_float64 (gdouble * out, gdouble * in, gint bytes)
+{
+ oil_add_f64 (out, out, in, bytes / sizeof (gdouble));
}
+#endif
/* *INDENT-OFF* */
MAKE_FUNC (add_int32, gint32, gint64, MIN_INT_32, MAX_INT_32)
MAKE_FUNC (add_uint32, guint32, guint64, MIN_UINT_32, MAX_UINT_32)
MAKE_FUNC (add_uint16, guint16, guint32, MIN_UINT_16, MAX_UINT_16)
MAKE_FUNC (add_uint8, guint8, guint16, MIN_UINT_8, MAX_UINT_8)
-MAKE_FUNC_NC (add_float64, gdouble, gdouble)
-MAKE_FUNC_NC (add_float32, gfloat, gfloat)
+MAKE_FUNC_NC (add_float64, gdouble)
+MAKE_FUNC_NC (add_float32, gfloat)
/* *INDENT-ON* */
/* we can only accept caps that we and downstream can handle. */
structure = gst_caps_get_structure (caps, 0);
media_type = gst_structure_get_name (structure);
if (strcmp (media_type, "audio/x-raw-int") == 0) {
- GST_DEBUG_OBJECT (adder, "parse_caps sets adder to format int");
adder->format = GST_ADDER_FORMAT_INT;
gst_structure_get_int (structure, "width", &adder->width);
gst_structure_get_int (structure, "depth", &adder->depth);
gst_structure_get_int (structure, "endianness", &adder->endianness);
gst_structure_get_boolean (structure, "signed", &adder->is_signed);
+ GST_INFO_OBJECT (adder, "parse_caps sets adder to format int, %d bit",
+ adder->width);
+
if (adder->endianness != G_BYTE_ORDER)
goto not_supported;
goto not_supported;
}
} else if (strcmp (media_type, "audio/x-raw-float") == 0) {
- GST_DEBUG_OBJECT (adder, "parse_caps sets adder to format float");
adder->format = GST_ADDER_FORMAT_FLOAT;
gst_structure_get_int (structure, "width", &adder->width);
gst_structure_get_int (structure, "endianness", &adder->endianness);
+ GST_INFO_OBJECT (adder, "parse_caps sets adder to format float, %d bit",
+ adder->width);
+
if (adder->endianness != G_BYTE_ORDER)
goto not_supported;
gst_adder_collected (GstCollectPads * pads, gpointer user_data)
{
/*
- * combine channels by adding sample values
+ * combine streams by adding data values
* basic algorithm :
* - this function is called when all pads have a buffer
* - get available bytes on all pads.
* - read available bytes, copy or add to target buffer
* - if there's an EOS event, remove the input channel
* - push out the output buffer
+ *
+ * todo:
+ * - would be nice to have a mixing mode, where instead of adding we mix
+ * - for float we could downscale after collect loop
+ * - for int we need to downscale each input to avoid clipping or
+ * mix into a temp (float) buffer and scale afterwards as well
*/
GstAdder *adder;
- guint size;
GSList *collected;
- GstBuffer *outbuf;
GstFlowReturn ret;
- gpointer outbytes;
+ GstBuffer *outbuf = NULL;
+ gpointer outdata = NULL;
+ guint outsize;
gboolean empty = TRUE;
adder = GST_ADDER (user_data);
if (G_UNLIKELY (adder->func == NULL))
goto not_negotiated;
- /* get available bytes for reading, this can be 0 which could mean
- * empty buffers or EOS, which we will catch when we loop over the
- * pads. */
- size = gst_collect_pads_available (pads);
+ /* get available bytes for reading, this can be 0 which could mean empty
+ * buffers or EOS, which we will catch when we loop over the pads. */
+ outsize = gst_collect_pads_available (pads);
GST_LOG_OBJECT (adder,
- "starting to cycle through channels, %d bytes available (bps = %d)", size,
- adder->bps);
-
- outbuf = NULL;
- outbytes = NULL;
+ "starting to cycle through channels, %d bytes available (bps = %d)",
+ outsize, adder->bps);
for (collected = pads->data; collected; collected = g_slist_next (collected)) {
- GstCollectData *data;
- guint8 *bytes;
- guint len;
+ GstCollectData *collect_data;
GstBuffer *inbuf;
+ guint8 *indata;
+ guint insize;
- data = (GstCollectData *) collected->data;
+ collect_data = (GstCollectData *) collected->data;
/* get a subbuffer of size bytes */
- inbuf = gst_collect_pads_take_buffer (pads, data, size);
+ inbuf = gst_collect_pads_take_buffer (pads, collect_data, outsize);
/* NULL means EOS or an empty buffer so we still need to flush in
* case of an empty buffer. */
if (inbuf == NULL) {
- GST_LOG_OBJECT (adder, "channel %p: no bytes available", data);
- goto next;
+ GST_LOG_OBJECT (adder, "channel %p: no bytes available", collect_data);
+ continue;
}
- bytes = GST_BUFFER_DATA (inbuf);
- len = GST_BUFFER_SIZE (inbuf);
+ indata = GST_BUFFER_DATA (inbuf);
+ insize = GST_BUFFER_SIZE (inbuf);
if (outbuf == NULL) {
GST_LOG_OBJECT (adder, "channel %p: making output buffer of %d bytes",
- data, size);
+ collect_data, outsize);
- /* first buffer, alloc size bytes. FIXME, we can easily subbuffer
- * and _make_writable. */
- outbuf = gst_buffer_new_and_alloc (size);
- outbytes = GST_BUFFER_DATA (outbuf);
+ /* first buffer, alloc outsize.
+ * FIXME: we can easily subbuffer and _make_writable.
+ * FIXME: only create empty buffer for first non-gap buffer, so that we
+ * only use adder function when really adding
+ */
+ outbuf = gst_buffer_new_and_alloc (outsize);
+ outdata = GST_BUFFER_DATA (outbuf);
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (adder->srcpad));
if (!GST_BUFFER_FLAG_IS_SET (inbuf, GST_BUFFER_FLAG_GAP)) {
- /* clear if we are only going to fill a partial buffer */
- if (G_UNLIKELY (size > len))
- memset (outbytes, 0, size);
-
GST_LOG_OBJECT (adder, "channel %p: copying %d bytes from data %p",
- data, len, bytes);
-
+ collect_data, insize, indata);
+ /* clear if we are only going to fill a partial buffer */
+ if (G_UNLIKELY (outsize > insize))
+ memset (outdata + insize, 0, outsize - insize);
/* and copy the data into it */
- memcpy (outbytes, bytes, len);
+ memcpy (outdata, indata, insize);
empty = FALSE;
} else {
+ /* clear whole buffer */
GST_LOG_OBJECT (adder, "channel %p: zeroing %d bytes from data %p",
- data, len, bytes);
- memset (outbytes, 0, size);
+ collect_data, insize, indata);
+ memset (outdata, 0, outsize);
}
} else {
if (!GST_BUFFER_FLAG_IS_SET (inbuf, GST_BUFFER_FLAG_GAP)) {
GST_LOG_OBJECT (adder, "channel %p: mixing %d bytes from data %p",
- data, len, bytes);
- /* other buffers, need to add them */
- adder->func ((gpointer) outbytes, (gpointer) bytes, len);
+ collect_data, insize, indata);
+ /* further buffers, need to add them */
+ adder->func ((gpointer) outdata, (gpointer) indata, insize);
empty = FALSE;
} else {
GST_LOG_OBJECT (adder, "channel %p: skipping %d bytes from data %p",
- data, len, bytes);
+ collect_data, insize, indata);
}
}
- next:
- if (inbuf)
- gst_buffer_unref (inbuf);
+ gst_buffer_unref (inbuf);
}
/* can only happen when no pads to collect or all EOS */
/* for the next timestamp, use the sample counter, which will
* never accumulate rounding errors */
- adder->offset += size / adder->bps;
+ adder->offset += outsize / adder->bps;
adder->timestamp = gst_util_uint64_scale_int (adder->offset,
GST_SECOND, adder->rate);
static gboolean
plugin_init (GstPlugin * plugin)
{
+ /*oil_init (); */
+
if (!gst_element_register (plugin, "adder", GST_RANK_NONE, GST_TYPE_ADDER)) {
return FALSE;
}
projects / platform / upstream / gstreamer.git / commitdiff