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amrwbdec: port to audiodecoder

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This commit is contained in:
Mark Nauwelaerts 2011-10-05 12:05:34 +02:00
parent b95673d88d
commit 851e34bfb5
3 changed files with 97 additions and 240 deletions
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7
ext/amrwbdec/Makefile.am
View file

@ -4,8 +4,11 @@ libgstamrwbdec_la_SOURCES = \
amrwb.c \ amrwb.c \
amrwbdec.c amrwbdec.c
libgstamrwbdec_la_CFLAGS = $(GST_BASE_CFLAGS) $(GST_CFLAGS) $(AMRWB_CFLAGS) libgstamrwbdec_la_CFLAGS = -DGST_USE_UNSTABLE_API $(GST_PLUGINS_BASE_CFLAGS) \
libgstamrwbdec_la_LIBADD = $(GST_BASE_LIBS) $(GST_LIBS) $(AMRWB_LIBS) $(GST_BASE_CFLAGS) $(GST_CFLAGS) $(AMRWB_CFLAGS)
libgstamrwbdec_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) \
-lgstaudio-@GST_MAJORMINOR@ \
$(GST_BASE_LIBS) $(GST_LIBS) $(AMRWB_LIBS)
libgstamrwbdec_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) libgstamrwbdec_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstamrwbdec_la_LIBTOOLFLAGS = --tag=disable-static libgstamrwbdec_la_LIBTOOLFLAGS = --tag=disable-static

314
ext/amrwbdec/amrwbdec.c
View file

@ -66,19 +66,19 @@ static const unsigned char block_size[16] =
6, 0, 0, 0, 0, 1, 1 6, 0, 0, 0, 0, 1, 1
}; };
static gboolean gst_amrwbdec_event (GstPad * pad, GstEvent * event); static gboolean gst_amrwbdec_start (GstAudioDecoder * dec);
static GstFlowReturn gst_amrwbdec_chain (GstPad * pad, GstBuffer * buffer); static gboolean gst_amrwbdec_stop (GstAudioDecoder * dec);
static gboolean gst_amrwbdec_setcaps (GstPad * pad, GstCaps * caps); static gboolean gst_amrwbdec_set_format (GstAudioDecoder * dec, GstCaps * caps);
static GstStateChangeReturn gst_amrwbdec_state_change (GstElement * element, static gboolean gst_amrwbdec_parse (GstAudioDecoder * dec, GstAdapter * adapter,
GstStateChange transition); gint * offset, gint * length);
static GstFlowReturn gst_amrwbdec_handle_frame (GstAudioDecoder * dec,
static void gst_amrwbdec_finalize (GObject * object); GstBuffer * buffer);
#define _do_init(bla) \ #define _do_init(bla) \
GST_DEBUG_CATEGORY_INIT (gst_amrwbdec_debug, "amrwbdec", 0, "AMR-WB audio decoder"); GST_DEBUG_CATEGORY_INIT (gst_amrwbdec_debug, "amrwbdec", 0, "AMR-WB audio decoder");
GST_BOILERPLATE_FULL (GstAmrwbDec, gst_amrwbdec, GstElement, GST_TYPE_ELEMENT, GST_BOILERPLATE_FULL (GstAmrwbDec, gst_amrwbdec, GstAudioDecoder,
_do_init); GST_TYPE_AUDIO_DECODER, _do_init);
static void static void
gst_amrwbdec_base_init (gpointer klass) gst_amrwbdec_base_init (gpointer klass)
@ -99,60 +99,54 @@ gst_amrwbdec_base_init (gpointer klass)
static void static void
gst_amrwbdec_class_init (GstAmrwbDecClass * klass) gst_amrwbdec_class_init (GstAmrwbDecClass * klass)
{ {
GObjectClass *object_class = G_OBJECT_CLASS (klass); GstAudioDecoderClass *base_class = GST_AUDIO_DECODER_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
object_class->finalize = gst_amrwbdec_finalize; base_class->start = GST_DEBUG_FUNCPTR (gst_amrwbdec_start);
base_class->stop = GST_DEBUG_FUNCPTR (gst_amrwbdec_stop);
element_class->change_state = GST_DEBUG_FUNCPTR (gst_amrwbdec_state_change); base_class->set_format = GST_DEBUG_FUNCPTR (gst_amrwbdec_set_format);
base_class->parse = GST_DEBUG_FUNCPTR (gst_amrwbdec_parse);
base_class->handle_frame = GST_DEBUG_FUNCPTR (gst_amrwbdec_handle_frame);
} }
static void static void
gst_amrwbdec_init (GstAmrwbDec * amrwbdec, GstAmrwbDecClass * klass) gst_amrwbdec_init (GstAmrwbDec * amrwbdec, GstAmrwbDecClass * klass)
{ {
/* create the sink pad */
amrwbdec->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink");
gst_pad_set_setcaps_function (amrwbdec->sinkpad, gst_amrwbdec_setcaps);
gst_pad_set_event_function (amrwbdec->sinkpad, gst_amrwbdec_event);
gst_pad_set_chain_function (amrwbdec->sinkpad, gst_amrwbdec_chain);
gst_element_add_pad (GST_ELEMENT (amrwbdec), amrwbdec->sinkpad);
/* create the src pad */
amrwbdec->srcpad = gst_pad_new_from_static_template (&src_template, "src");
gst_pad_use_fixed_caps (amrwbdec->srcpad);
gst_element_add_pad (GST_ELEMENT (amrwbdec), amrwbdec->srcpad);
amrwbdec->adapter = gst_adapter_new ();
/* init rest */
amrwbdec->handle = NULL;
amrwbdec->channels = 0;
amrwbdec->rate = 0;
amrwbdec->duration = 0;
amrwbdec->ts = -1;
}
static void
gst_amrwbdec_finalize (GObject * object)
{
GstAmrwbDec *amrwbdec;
amrwbdec = GST_AMRWBDEC (object);
gst_adapter_clear (amrwbdec->adapter);
g_object_unref (amrwbdec->adapter);
G_OBJECT_CLASS (parent_class)->finalize (object);
} }
static gboolean static gboolean
gst_amrwbdec_setcaps (GstPad * pad, GstCaps * caps) gst_amrwbdec_start (GstAudioDecoder * dec)
{
GstAmrwbDec *amrwbdec = GST_AMRWBDEC (dec);
GST_DEBUG_OBJECT (dec, "start");
if (!(amrwbdec->handle = D_IF_init ()))
return FALSE;
amrwbdec->rate = 0;
amrwbdec->channels = 0;
return TRUE;
}
static gboolean
gst_amrwbdec_stop (GstAudioDecoder * dec)
{
GstAmrwbDec *amrwbdec = GST_AMRWBDEC (dec);
GST_DEBUG_OBJECT (dec, "stop");
D_IF_exit (amrwbdec->handle);
return TRUE;
}
static gboolean
gst_amrwbdec_set_format (GstAudioDecoder * dec, GstCaps * caps)
{ {
GstStructure *structure; GstStructure *structure;
GstAmrwbDec *amrwbdec; GstAmrwbDec *amrwbdec;
GstCaps *copy; GstCaps *copy;
amrwbdec = GST_AMRWBDEC (gst_pad_get_parent (pad)); amrwbdec = GST_AMRWBDEC (dec);
structure = gst_caps_get_structure (caps, 0); structure = gst_caps_get_structure (caps, 0);
@ -168,215 +162,85 @@ gst_amrwbdec_setcaps (GstPad * pad, GstCaps * caps)
"endianness", G_TYPE_INT, G_BYTE_ORDER, "endianness", G_TYPE_INT, G_BYTE_ORDER,
"rate", G_TYPE_INT, amrwbdec->rate, "signed", G_TYPE_BOOLEAN, TRUE, NULL); "rate", G_TYPE_INT, amrwbdec->rate, "signed", G_TYPE_BOOLEAN, TRUE, NULL);
amrwbdec->duration = gst_util_uint64_scale_int (GST_SECOND, L_FRAME16k, gst_pad_set_caps (GST_AUDIO_DECODER_SRC_PAD (amrwbdec), copy);
amrwbdec->rate * amrwbdec->channels);
gst_pad_set_caps (amrwbdec->srcpad, copy);
gst_caps_unref (copy); gst_caps_unref (copy);
gst_object_unref (amrwbdec);
return TRUE; return TRUE;
} }
static gboolean static GstFlowReturn
gst_amrwbdec_event (GstPad * pad, GstEvent * event) gst_amrwbdec_parse (GstAudioDecoder * dec, GstAdapter * adapter,
gint * offset, gint * length)
{ {
GstAmrwbDec *amrwbdec; GstAmrwbDec *amrwbdec = GST_AMRWBDEC (dec);
gboolean ret = TRUE; const guint8 *data;
guint size;
gboolean sync, eos;
gint block, mode;
amrwbdec = GST_AMRWBDEC (gst_pad_get_parent (pad)); size = gst_adapter_available (adapter);
g_return_val_if_fail (size > 0, GST_FLOW_ERROR);
switch (GST_EVENT_TYPE (event)) { gst_audio_decoder_get_parse_state (dec, &sync, &eos);
case GST_EVENT_FLUSH_START:
ret = gst_pad_push_event (amrwbdec->srcpad, event);
break;
case GST_EVENT_FLUSH_STOP:
ret = gst_pad_push_event (amrwbdec->srcpad, event);
gst_adapter_clear (amrwbdec->adapter);
amrwbdec->ts = -1;
break;
case GST_EVENT_EOS:
gst_adapter_clear (amrwbdec->adapter);
ret = gst_pad_push_event (amrwbdec->srcpad, event);
break;
case GST_EVENT_NEWSEGMENT:
{
GstFormat format;
gdouble rate, arate;
gint64 start, stop, time;
gboolean update;
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format, /* need to peek data to get the size */
&start, &stop, &time); if (gst_adapter_available (adapter) < 1)
return GST_FLOW_ERROR;
/* we need time for now */ data = gst_adapter_peek (adapter, 1);
if (format != GST_FORMAT_TIME) mode = (data[0] >> 3) & 0x0F;
goto newseg_wrong_format; block = block_size[mode];
GST_DEBUG_OBJECT (amrwbdec, GST_DEBUG_OBJECT (amrwbdec, "mode %d, block %d", mode, block);
"newsegment: update %d, rate %g, arate %g, start %" GST_TIME_FORMAT
", stop %" GST_TIME_FORMAT ", time %" GST_TIME_FORMAT,
update, rate, arate, GST_TIME_ARGS (start), GST_TIME_ARGS (stop),
GST_TIME_ARGS (time));
/* now configure the values */ if (block) {
gst_segment_set_newsegment_full (&amrwbdec->segment, update, *offset = 0;
rate, arate, format, start, stop, time); *length = block;
ret = gst_pad_push_event (amrwbdec->srcpad, event); } else {
} /* no frame yet, skip one byte */
break; GST_LOG_OBJECT (amrwbdec, "skipping byte");
default: *offset = 1;
ret = gst_pad_push_event (amrwbdec->srcpad, event); return GST_FLOW_UNEXPECTED;
break;
} }
done:
gst_object_unref (amrwbdec);
return ret; return GST_FLOW_OK;
/* ERRORS */
newseg_wrong_format:
{
GST_DEBUG_OBJECT (amrwbdec, "received non TIME newsegment");
goto done;
}
} }
static GstFlowReturn static GstFlowReturn
gst_amrwbdec_chain (GstPad * pad, GstBuffer * buffer) gst_amrwbdec_handle_frame (GstAudioDecoder * dec, GstBuffer * buffer)
{ {
GstAmrwbDec *amrwbdec; GstAmrwbDec *amrwbdec;
GstFlowReturn ret = GST_FLOW_OK; GstBuffer *out;
const guint8 *data;
amrwbdec = GST_AMRWBDEC (gst_pad_get_parent (pad)); amrwbdec = GST_AMRWBDEC (dec);
/* no fancy flushing */
if (!buffer || !GST_BUFFER_SIZE (buffer))
return GST_FLOW_OK;
if (amrwbdec->rate == 0 || amrwbdec->channels == 0) if (amrwbdec->rate == 0 || amrwbdec->channels == 0)
goto not_negotiated; goto not_negotiated;
/* discontinuity, don't combine samples before and after the /* the library seems to write into the source data, hence the copy. */
* DISCONT */ /* should be no problem */
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) { data = GST_BUFFER_DATA (buffer);
gst_adapter_clear (amrwbdec->adapter);
amrwbdec->ts = -1;
amrwbdec->discont = TRUE;
}
/* take latest timestamp, FIXME timestamp is the one of the /* get output */
* first buffer in the adapter. */ out = gst_buffer_new_and_alloc (sizeof (gint16) * L_FRAME16k);
if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer))
amrwbdec->ts = GST_BUFFER_TIMESTAMP (buffer);
gst_adapter_push (amrwbdec->adapter, buffer); /* decode */
D_IF_decode (amrwbdec->handle, (unsigned char *) data,
(Word16 *) GST_BUFFER_DATA (out), _good_frame);
while (TRUE) { /* send out */
GstBuffer *out; return gst_audio_decoder_finish_frame (dec, out, 1);
const guint8 *data;
gint block, mode;
/* need to peek data to get the size */
if (gst_adapter_available (amrwbdec->adapter) < 1)
break;
data = gst_adapter_peek (amrwbdec->adapter, 1);
/* get size */
mode = (data[0] >> 3) & 0x0F;
block = block_size[mode];
GST_DEBUG_OBJECT (amrwbdec, "mode %d, block %d", mode, block);
if (!block) {
GST_LOG_OBJECT (amrwbdec, "skipping byte");
gst_adapter_flush (amrwbdec->adapter, 1);
continue;
}
if (gst_adapter_available (amrwbdec->adapter) < block)
break;
/* the library seems to write into the source data, hence the copy. */
data = gst_adapter_take (amrwbdec->adapter, block);
/* get output */
out = gst_buffer_new_and_alloc (sizeof (gint16) * L_FRAME16k);
GST_BUFFER_DURATION (out) = amrwbdec->duration;
GST_BUFFER_TIMESTAMP (out) = amrwbdec->ts;
if (amrwbdec->ts != -1)
amrwbdec->ts += amrwbdec->duration;
if (amrwbdec->discont) {
GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
amrwbdec->discont = FALSE;
}
gst_buffer_set_caps (out, GST_PAD_CAPS (amrwbdec->srcpad));
/* decode */
D_IF_decode (amrwbdec->handle, (unsigned char *) data,
(Word16 *) GST_BUFFER_DATA (out), _good_frame);
g_free ((gpointer) data);
/* send out */
ret = gst_pad_push (amrwbdec->srcpad, out);
}
gst_object_unref (amrwbdec);
return ret;
/* ERRORS */ /* ERRORS */
not_negotiated: not_negotiated:
{ {
GST_ELEMENT_ERROR (amrwbdec, STREAM, TYPE_NOT_FOUND, (NULL), GST_ELEMENT_ERROR (amrwbdec, STREAM, TYPE_NOT_FOUND, (NULL),
("Decoder is not initialized")); ("Decoder is not initialized"));
gst_object_unref (amrwbdec);
return GST_FLOW_NOT_NEGOTIATED; return GST_FLOW_NOT_NEGOTIATED;
} }
} }
static GstStateChangeReturn
gst_amrwbdec_state_change (GstElement * element, GstStateChange transition)
{
GstAmrwbDec *amrwbdec;
GstStateChangeReturn ret;
amrwbdec = GST_AMRWBDEC (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!(amrwbdec->handle = D_IF_init ()))
goto init_failed;
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_adapter_clear (amrwbdec->adapter);
amrwbdec->rate = 0;
amrwbdec->channels = 0;
amrwbdec->ts = -1;
amrwbdec->discont = TRUE;
gst_segment_init (&amrwbdec->segment, GST_FORMAT_TIME);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
D_IF_exit (amrwbdec->handle);
break;
default:
break;
}
return ret;
/* ERRORS */
init_failed:
{
GST_ELEMENT_ERROR (amrwbdec, LIBRARY, INIT, (NULL),
("Failed to open AMR Decoder"));
return GST_STATE_CHANGE_FAILURE;
}
}

16
ext/amrwbdec/amrwbdec.h
View file

@ -21,7 +21,7 @@
#define __GST_AMRWBDEC_H__ #define __GST_AMRWBDEC_H__
#include <gst/gst.h> #include <gst/gst.h>
#include <gst/base/gstadapter.h> #include <gst/audio/gstaudiodecoder.h>
#include <dec_if.h> #include <dec_if.h>
#include <if_rom.h> #include <if_rom.h>
@ -47,27 +47,17 @@ typedef struct _GstAmrwbDecClass GstAmrwbDecClass;
* Opaque data structure. * Opaque data structure.
*/ */
struct _GstAmrwbDec { struct _GstAmrwbDec {
GstElement element; GstAudioDecoder element;
/* pads */
GstPad *sinkpad, *srcpad;
guint64 ts;
GstAdapter *adapter;
/* library handle */ /* library handle */
void *handle; void *handle;
/* output settings */ /* output settings */
gint channels, rate; gint channels, rate;
gint duration;
GstSegment segment;
gboolean discont;
}; };
struct _GstAmrwbDecClass { struct _GstAmrwbDecClass {
GstElementClass parent_class; GstAudioDecoderClass parent_class;
}; };
GType gst_amrwbdec_get_type (void); GType gst_amrwbdec_get_type (void);