mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-14 13:21:28 +00:00
299 lines
8.7 KiB
C
299 lines
8.7 KiB
C
/* GStreamer
|
|
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
|
*
|
|
* 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., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
#include <string.h>
|
|
|
|
#include "gstspeexenc.h"
|
|
|
|
static GstPadTemplate *speexenc_src_template, *speexenc_sink_template;
|
|
|
|
/* elementfactory information */
|
|
GstElementDetails gst_speexenc_details = {
|
|
"speex audio encoder",
|
|
"Codec/Audio/Encoder",
|
|
".speex",
|
|
"Wim Taymans <wim.taymans@chello.be>",
|
|
};
|
|
|
|
/* SpeexEnc signals and args */
|
|
enum {
|
|
FRAME_ENCODED,
|
|
/* FILL ME */
|
|
LAST_SIGNAL
|
|
};
|
|
|
|
enum {
|
|
ARG_0,
|
|
/* FILL ME */
|
|
};
|
|
|
|
static void gst_speexenc_base_init (gpointer g_class);
|
|
static void gst_speexenc_class_init (GstSpeexEnc *klass);
|
|
static void gst_speexenc_init (GstSpeexEnc *speexenc);
|
|
|
|
static void gst_speexenc_chain (GstPad *pad,GstData *_data);
|
|
static GstPadLinkReturn gst_speexenc_sinkconnect (GstPad *pad, GstCaps *caps);
|
|
|
|
static GstElementClass *parent_class = NULL;
|
|
static guint gst_speexenc_signals[LAST_SIGNAL] = { 0 };
|
|
|
|
GType
|
|
gst_speexenc_get_type (void)
|
|
{
|
|
static GType speexenc_type = 0;
|
|
|
|
if (!speexenc_type) {
|
|
static const GTypeInfo speexenc_info = {
|
|
sizeof (GstSpeexEncClass),
|
|
gst_speexenc_base_init,
|
|
NULL,
|
|
(GClassInitFunc) gst_speexenc_class_init,
|
|
NULL,
|
|
NULL,
|
|
sizeof (GstSpeexEnc),
|
|
0,
|
|
(GInstanceInitFunc) gst_speexenc_init,
|
|
};
|
|
speexenc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstSpeexEnc", &speexenc_info, 0);
|
|
}
|
|
return speexenc_type;
|
|
}
|
|
|
|
GST_CAPS_FACTORY (speex_caps_factory,
|
|
GST_CAPS_NEW (
|
|
"speex_speex",
|
|
"audio/x-speex",
|
|
"rate", GST_PROPS_INT_RANGE (1000, 48000),
|
|
"channels", GST_PROPS_INT (1)
|
|
)
|
|
)
|
|
|
|
GST_CAPS_FACTORY (raw_caps_factory,
|
|
GST_CAPS_NEW (
|
|
"speex_raw",
|
|
"audio/x-raw-int",
|
|
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
|
|
"signed", GST_PROPS_BOOLEAN (TRUE),
|
|
"width", GST_PROPS_INT (16),
|
|
"depth", GST_PROPS_INT (16),
|
|
"rate", GST_PROPS_INT_RANGE (1000, 48000),
|
|
"channels", GST_PROPS_INT (1)
|
|
)
|
|
)
|
|
|
|
static void
|
|
gst_speexenc_base_init (gpointer g_class)
|
|
{
|
|
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
|
|
GstCaps *raw_caps, *speex_caps;
|
|
|
|
raw_caps = GST_CAPS_GET (raw_caps_factory);
|
|
speex_caps = GST_CAPS_GET (speex_caps_factory);
|
|
|
|
speexenc_sink_template = gst_pad_template_new ("sink", GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
raw_caps, NULL);
|
|
speexenc_src_template = gst_pad_template_new ("src", GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
speex_caps, NULL);
|
|
gst_element_class_add_pad_template (element_class, speexenc_sink_template);
|
|
gst_element_class_add_pad_template (element_class, speexenc_src_template);
|
|
|
|
gst_element_class_set_details (element_class, &gst_speexenc_details);
|
|
}
|
|
|
|
static void
|
|
gst_speexenc_class_init (GstSpeexEnc *klass)
|
|
{
|
|
GObjectClass *gobject_class;
|
|
GstElementClass *gstelement_class;
|
|
|
|
gobject_class = (GObjectClass*) klass;
|
|
gstelement_class = (GstElementClass*) klass;
|
|
|
|
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
|
|
|
|
gst_speexenc_signals[FRAME_ENCODED] =
|
|
g_signal_new ("frame_encoded", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (GstSpeexEncClass, frame_encoded), NULL, NULL,
|
|
g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
|
|
}
|
|
|
|
|
|
static void
|
|
gst_speexenc_init (GstSpeexEnc *speexenc)
|
|
{
|
|
/* create the sink and src pads */
|
|
speexenc->sinkpad = gst_pad_new_from_template (speexenc_sink_template, "sink");
|
|
gst_element_add_pad (GST_ELEMENT (speexenc), speexenc->sinkpad);
|
|
gst_pad_set_chain_function (speexenc->sinkpad, gst_speexenc_chain);
|
|
gst_pad_set_link_function (speexenc->sinkpad, gst_speexenc_sinkconnect);
|
|
|
|
speexenc->srcpad = gst_pad_new_from_template (speexenc_src_template, "src");
|
|
gst_element_add_pad (GST_ELEMENT (speexenc), speexenc->srcpad);
|
|
|
|
speex_bits_init(&speexenc->bits);
|
|
speexenc->mode = &speex_nb_mode;
|
|
speexenc->bufsize = 0;
|
|
speexenc->packet_count = 0;
|
|
speexenc->n_packets = 20;
|
|
}
|
|
|
|
static GstPadLinkReturn
|
|
gst_speexenc_sinkconnect (GstPad *pad, GstCaps *caps)
|
|
{
|
|
GstSpeexEnc *speexenc;
|
|
|
|
speexenc = GST_SPEEXENC (gst_pad_get_parent (pad));
|
|
|
|
if (!GST_CAPS_IS_FIXED (caps))
|
|
return GST_PAD_LINK_DELAYED;
|
|
|
|
gst_caps_get_int (caps, "rate", &speexenc->rate);
|
|
if (gst_pad_try_set_caps (speexenc->srcpad, GST_CAPS_NEW (
|
|
"speex_speex",
|
|
"audio/x-speex",
|
|
"rate", GST_PROPS_INT (speexenc->rate),
|
|
"channels", GST_PROPS_INT (1)
|
|
)))
|
|
{
|
|
speex_init_header(&speexenc->header, speexenc->rate, 1, speexenc->mode);
|
|
speexenc->header.frames_per_packet = speexenc->n_packets;
|
|
|
|
speexenc->state = speex_encoder_init(speexenc->mode);
|
|
speex_encoder_ctl(speexenc->state, SPEEX_GET_FRAME_SIZE, &speexenc->frame_size);
|
|
|
|
return GST_PAD_LINK_OK;
|
|
}
|
|
return GST_PAD_LINK_REFUSED;
|
|
|
|
}
|
|
|
|
static void
|
|
gst_speexenc_chain (GstPad *pad, GstData *_data)
|
|
{
|
|
GstBuffer *buf = GST_BUFFER (_data);
|
|
GstSpeexEnc *speexenc;
|
|
GstBuffer *outbuf;
|
|
gint16 *data;
|
|
guint8 *header_data;
|
|
gint size;
|
|
float input[1000];
|
|
gint frame_size;
|
|
gint i;
|
|
|
|
g_return_if_fail (pad != NULL);
|
|
g_return_if_fail (GST_IS_PAD (pad));
|
|
g_return_if_fail (buf != NULL);
|
|
|
|
speexenc = GST_SPEEXENC (GST_OBJECT_PARENT (pad));
|
|
|
|
if (!GST_PAD_CAPS (speexenc->srcpad)) {
|
|
|
|
if (!gst_pad_try_set_caps (speexenc->srcpad,
|
|
GST_CAPS_NEW (
|
|
"speex_enc",
|
|
"audio/x-speex",
|
|
"rate", GST_PROPS_INT (speexenc->rate),
|
|
"channels", GST_PROPS_INT (1)
|
|
)))
|
|
{
|
|
gst_element_error (GST_ELEMENT (speexenc), "could not negotiate");
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (speexenc->packet_count == 0) {
|
|
header_data = speex_header_to_packet(&speexenc->header, &size);
|
|
|
|
outbuf = gst_buffer_new ();
|
|
GST_BUFFER_DATA (outbuf) = header_data;
|
|
GST_BUFFER_SIZE (outbuf) = size;
|
|
|
|
gst_pad_push (speexenc->srcpad, GST_DATA (outbuf));
|
|
}
|
|
|
|
data = (gint16 *) GST_BUFFER_DATA (buf);
|
|
size = GST_BUFFER_SIZE (buf) / sizeof (gint16);
|
|
|
|
frame_size = speexenc->frame_size;
|
|
|
|
if (speexenc->bufsize && (speexenc->bufsize + size >= frame_size)) {
|
|
memcpy (speexenc->buffer + speexenc->bufsize, data, (frame_size - speexenc->bufsize) * sizeof (gint16));
|
|
|
|
for (i = 0; i < frame_size; i++)
|
|
input[i] = speexenc->buffer[i];
|
|
|
|
speex_encode (speexenc->state, input, &speexenc->bits);
|
|
speexenc->packet_count++;
|
|
|
|
if (speexenc->packet_count % speexenc->n_packets == 0) {
|
|
GstBuffer *outbuf;
|
|
|
|
outbuf = gst_buffer_new_and_alloc (frame_size * speexenc->n_packets);
|
|
GST_BUFFER_SIZE (outbuf) = speex_bits_write(&speexenc->bits,
|
|
GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
|
|
GST_BUFFER_TIMESTAMP (outbuf) = speexenc->next_ts;
|
|
speex_bits_reset(&speexenc->bits);
|
|
|
|
gst_pad_push (speexenc->srcpad, GST_DATA (outbuf));
|
|
speexenc->next_ts += frame_size * GST_SECOND / speexenc->rate;
|
|
}
|
|
|
|
size -= (speexenc->frame_size - speexenc->bufsize);
|
|
data += (speexenc->frame_size - speexenc->bufsize);
|
|
|
|
speexenc->bufsize = 0;
|
|
}
|
|
|
|
while (size >= frame_size) {
|
|
for (i = 0; i < frame_size; i++)
|
|
input[i] = data[i];
|
|
|
|
speex_encode (speexenc->state, input, &speexenc->bits);
|
|
speexenc->packet_count++;
|
|
|
|
if (speexenc->packet_count % speexenc->n_packets == 0) {
|
|
GstBuffer *outbuf;
|
|
|
|
outbuf = gst_buffer_new_and_alloc (frame_size * speexenc->n_packets);
|
|
GST_BUFFER_SIZE (outbuf) = speex_bits_write(&speexenc->bits,
|
|
GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
|
|
GST_BUFFER_TIMESTAMP (outbuf) = speexenc->next_ts;
|
|
speex_bits_reset(&speexenc->bits);
|
|
|
|
gst_pad_push (speexenc->srcpad, GST_DATA (outbuf));
|
|
speexenc->next_ts += frame_size * GST_SECOND / speexenc->rate;
|
|
}
|
|
|
|
size -= frame_size;
|
|
data += frame_size;
|
|
}
|
|
|
|
if (size) {
|
|
memcpy (speexenc->buffer + speexenc->bufsize, data, size * sizeof (gint16));
|
|
speexenc->bufsize += size;
|
|
}
|
|
|
|
gst_buffer_unref(buf);
|
|
}
|