Commit 0acfa3cc authored by Mark Nauwelaerts's avatar Mark Nauwelaerts

gsmenc: port to audioencoder

parent 6b4038fe
......@@ -43,39 +43,12 @@ enum
ARG_0
};
static void gst_gsmenc_base_init (gpointer g_class);
static void gst_gsmenc_class_init (GstGSMEnc * klass);
static void gst_gsmenc_init (GstGSMEnc * gsmenc);
static void gst_gsmenc_finalize (GObject * object);
static gboolean gst_gsmenc_setcaps (GstPad * pad, GstCaps * caps);
static GstFlowReturn gst_gsmenc_chain (GstPad * pad, GstBuffer * buf);
static GstElementClass *parent_class = NULL;
GType
gst_gsmenc_get_type (void)
{
static GType gsmenc_type = 0;
if (!gsmenc_type) {
static const GTypeInfo gsmenc_info = {
sizeof (GstGSMEncClass),
gst_gsmenc_base_init,
NULL,
(GClassInitFunc) gst_gsmenc_class_init,
NULL,
NULL,
sizeof (GstGSMEnc),
0,
(GInstanceInitFunc) gst_gsmenc_init,
};
gsmenc_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstGSMEnc", &gsmenc_info, 0);
}
return gsmenc_type;
}
static gboolean gst_gsmenc_start (GstAudioEncoder * enc);
static gboolean gst_gsmenc_stop (GstAudioEncoder * enc);
static gboolean gst_gsmenc_set_format (GstAudioEncoder * enc,
GstAudioInfo * info);
static GstFlowReturn gst_gsmenc_handle_frame (GstAudioEncoder * enc,
GstBuffer * in_buf);
static GstStaticPadTemplate gsmenc_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
......@@ -95,6 +68,9 @@ GST_STATIC_PAD_TEMPLATE ("sink",
"depth = (int) 16, " "rate = (int) 8000, " "channels = (int) 1")
);
GST_BOILERPLATE (GstGSMEnc, gst_gsmenc, GstAudioEncoder,
GST_TYPE_AUDIO_ENCODER);
static void
gst_gsmenc_base_init (gpointer g_class)
{
......@@ -110,34 +86,32 @@ gst_gsmenc_base_init (gpointer g_class)
}
static void
gst_gsmenc_class_init (GstGSMEnc * klass)
gst_gsmenc_class_init (GstGSMEncClass * klass)
{
GObjectClass *gobject_class;
GstAudioEncoderClass *base_class;
gobject_class = (GObjectClass *) klass;
base_class = (GstAudioEncoderClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->finalize = gst_gsmenc_finalize;
base_class->start = GST_DEBUG_FUNCPTR (gst_gsmenc_start);
base_class->stop = GST_DEBUG_FUNCPTR (gst_gsmenc_stop);
base_class->set_format = GST_DEBUG_FUNCPTR (gst_gsmenc_set_format);
base_class->handle_frame = GST_DEBUG_FUNCPTR (gst_gsmenc_handle_frame);
GST_DEBUG_CATEGORY_INIT (gsmenc_debug, "gsmenc", 0, "GSM Encoder");
}
static void
gst_gsmenc_init (GstGSMEnc * gsmenc)
gst_gsmenc_init (GstGSMEnc * gsmenc, GstGSMEncClass * klass)
{
gint use_wav49;
}
/* create the sink and src pads */
gsmenc->sinkpad =
gst_pad_new_from_static_template (&gsmenc_sink_template, "sink");
gst_pad_set_chain_function (gsmenc->sinkpad, gst_gsmenc_chain);
gst_pad_set_setcaps_function (gsmenc->sinkpad, gst_gsmenc_setcaps);
gst_element_add_pad (GST_ELEMENT (gsmenc), gsmenc->sinkpad);
static gboolean
gst_gsmenc_start (GstAudioEncoder * enc)
{
GstGSMEnc *gsmenc = GST_GSMENC (enc);
gint use_wav49;
gsmenc->srcpad =
gst_pad_new_from_static_template (&gsmenc_src_template, "src");
gst_element_add_pad (GST_ELEMENT (gsmenc), gsmenc->srcpad);
GST_DEBUG_OBJECT (enc, "start");
gsmenc->state = gsm_create ();
......@@ -145,78 +119,72 @@ gst_gsmenc_init (GstGSMEnc * gsmenc)
use_wav49 = 0;
gsm_option (gsmenc->state, GSM_OPT_WAV49, &use_wav49);
gsmenc->adapter = gst_adapter_new ();
gsmenc->next_ts = 0;
return TRUE;
}
static void
gst_gsmenc_finalize (GObject * object)
static gboolean
gst_gsmenc_stop (GstAudioEncoder * enc)
{
GstGSMEnc *gsmenc;
GstGSMEnc *gsmenc = GST_GSMENC (enc);
gsmenc = GST_GSMENC (object);
g_object_unref (gsmenc->adapter);
GST_DEBUG_OBJECT (enc, "stop");
gsm_destroy (gsmenc->state);
G_OBJECT_CLASS (parent_class)->finalize (object);
return TRUE;
}
static gboolean
gst_gsmenc_setcaps (GstPad * pad, GstCaps * caps)
gst_gsmenc_set_format (GstAudioEncoder * benc, GstAudioInfo * info)
{
GstGSMEnc *gsmenc;
GstCaps *srccaps;
gsmenc = GST_GSMENC (gst_pad_get_parent (pad));
gsmenc = GST_GSMENC (benc);
srccaps = gst_static_pad_template_get_caps (&gsmenc_src_template);
gst_pad_set_caps (GST_AUDIO_ENCODER_SRC_PAD (benc), srccaps);
gst_pad_set_caps (gsmenc->srcpad, srccaps);
gst_object_unref (gsmenc);
/* report needs to base class */
gst_audio_encoder_set_frame_samples_min (benc, 160);
gst_audio_encoder_set_frame_samples_max (benc, 160);
gst_audio_encoder_set_frame_max (benc, 1);
return TRUE;
}
static GstFlowReturn
gst_gsmenc_chain (GstPad * pad, GstBuffer * buf)
gst_gsmenc_handle_frame (GstAudioEncoder * benc, GstBuffer * buffer)
{
GstGSMEnc *gsmenc;
gsm_signal *data;
GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *outbuf;
gsmenc = GST_GSMENC (gst_pad_get_parent (pad));
gsmenc = GST_GSMENC (benc);
if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT)) {
gst_adapter_clear (gsmenc->adapter);
/* we don't deal with squeezing remnants, so simply discard those */
if (G_UNLIKELY (buffer == NULL)) {
GST_DEBUG_OBJECT (gsmenc, "no data");
goto done;
}
gst_adapter_push (gsmenc->adapter, buf);
while (gst_adapter_available (gsmenc->adapter) >= 320) {
GstBuffer *outbuf;
outbuf = gst_buffer_new_and_alloc (33 * sizeof (gsm_byte));
GST_BUFFER_TIMESTAMP (outbuf) = gsmenc->next_ts;
GST_BUFFER_DURATION (outbuf) = 20 * GST_MSECOND;
gsmenc->next_ts += 20 * GST_MSECOND;
/* encode 160 16-bit samples into 33 bytes */
data = (gsm_signal *) gst_adapter_peek (gsmenc->adapter, 320);
gsm_encode (gsmenc->state, data, (gsm_byte *) GST_BUFFER_DATA (outbuf));
gst_adapter_flush (gsmenc->adapter, 320);
if (G_UNLIKELY (GST_BUFFER_SIZE (buffer) < 320)) {
GST_DEBUG_OBJECT (gsmenc, "discarding trailing data %d",
GST_BUFFER_SIZE (buffer));
ret = gst_audio_encoder_finish_frame (benc, NULL, -1);
goto done;
}
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (gsmenc->srcpad));
outbuf = gst_buffer_new_and_alloc (33 * sizeof (gsm_byte));
GST_DEBUG_OBJECT (gsmenc, "Pushing buffer of size %d",
GST_BUFFER_SIZE (outbuf));
/* encode 160 16-bit samples into 33 bytes */
data = (gsm_signal *) GST_BUFFER_DATA (buffer);
gsm_encode (gsmenc->state, data, (gsm_byte *) GST_BUFFER_DATA (outbuf));
ret = gst_pad_push (gsmenc->srcpad, outbuf);
}
GST_LOG_OBJECT (gsmenc, "encoded to %d bytes", GST_BUFFER_SIZE (outbuf));
gst_object_unref (gsmenc);
ret = gst_audio_encoder_finish_frame (benc, outbuf, 160);
done:
return ret;
}
......@@ -21,7 +21,7 @@
#define __GST_GSMENC_H__
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
#include <gst/audio/gstaudioencoder.h>
#ifdef GSM_HEADER_IN_SUBDIR
#include <gsm/gsm.h>
......@@ -47,20 +47,14 @@ typedef struct _GstGSMEncClass GstGSMEncClass;
struct _GstGSMEnc
{
GstElement element;
/* pads */
GstPad *sinkpad, *srcpad;
GstAdapter *adapter;
GstAudioEncoder element;
gsm state;
GstClockTime next_ts;
gboolean firstBuf;
};
struct _GstGSMEncClass
{
GstElementClass parent_class;
GstAudioEncoderClass parent_class;
};
GType gst_gsmenc_get_type (void);
......
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