* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
+/* Element-Checklist-Version: 5 */
/* 2001/04/03 - Updated parseau to use caps nego
- * Zaheer Merali <zaheer@grid9.net
+ * Zaheer Abbas Merali <zaheerabbas at merali dot org>
*/
#ifdef HAVE_CONFIG_H
#include <stdlib.h>
#include <string.h>
-#include <gstauparse.h>
+#include "gstauparse.h"
#include <gst/audio/audio.h>
/* elementfactory information */
-static GstElementDetails gst_auparse_details = GST_ELEMENT_DETAILS (
- ".au parser",
- "Codec/Parser/Audio",
- "Parse an .au file into raw audio",
- "Erik Walthinsen <omega@cse.ogi.edu>"
-);
+static GstElementDetails gst_auparse_details =
+GST_ELEMENT_DETAILS (".au parser",
+ "Codec/Demuxer/Audio",
+ "Parse an .au file into raw audio",
+ "Erik Walthinsen <omega@cse.ogi.edu>");
static GstStaticPadTemplate gst_auparse_sink_template =
-GST_STATIC_PAD_TEMPLATE (
- "sink",
- GST_PAD_SINK,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS ( "audio/x-au" )
-);
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/x-au")
+ );
static GstStaticPadTemplate gst_auparse_src_template =
-GST_STATIC_PAD_TEMPLATE (
- "src",
- GST_PAD_SRC,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS (
- GST_AUDIO_INT_PAD_TEMPLATE_CAPS "; "
- "audio/x-alaw, "
- "rate = (int) [ 8000, 48000 ], "
- "channels = (int) [ 1, 2 ]"
- )
-);
-
-/* AuParse signals and args */
-enum {
- /* FILL ME */
- LAST_SIGNAL
+ GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_SOMETIMES, /* FIXME: spider */
+ GST_STATIC_CAPS (GST_AUDIO_INT_PAD_TEMPLATE_CAPS "; "
+ /* we don't use GST_AUDIO_FLOAT_PAD_TEMPLATE_CAPS
+ because of min buffer-frames which is 1, not 0 */
+ "audio/x-raw-float, "
+ "rate = (int) [ 1, MAX ], "
+ "channels = (int) [ 1, MAX ], "
+ "endianness = (int) { LITTLE_ENDIAN , BIG_ENDIAN }, "
+ "width = (int) { 32, 64 }, "
+ "buffer-frames = (int) [ 0, MAX]" "; "
+ "audio/x-alaw, "
+ "rate = (int) [ 8000, 192000 ], "
+ "channels = (int) [ 1, 2 ]" "; "
+ "audio/x-mulaw, "
+ "rate = (int) [ 8000, 192000 ], " "channels = (int) [ 1, 2 ]" "; "
+ /* Nothing to decode those ADPCM streams for now */
+ "audio/x-adpcm, " "layout = (string) { g721, g722, g723_3, g723_5 }")
+ );
+
+enum
+{
+ ARG_0
+ /* FILL ME */
};
-enum {
- ARG_0,
- /* FILL ME */
-};
+static void gst_auparse_base_init (gpointer g_class);
+static void gst_auparse_class_init (GstAuParseClass * klass);
+static void gst_auparse_init (GstAuParse * auparse);
+static void gst_auparse_dispose (GObject * object);
-static void gst_auparse_base_init (gpointer g_class);
-static void gst_auparse_class_init (GstAuParseClass *klass);
-static void gst_auparse_init (GstAuParse *auparse);
+static GstFlowReturn gst_auparse_chain (GstPad * pad, GstBuffer * buf);
-static void gst_auparse_chain (GstPad *pad,GstData *_data);
+static GstStateChangeReturn gst_auparse_change_state (GstElement * element,
+ GstStateChange transition);
static GstElementClass *parent_class = NULL;
+
+
/*static guint gst_auparse_signals[LAST_SIGNAL] = { 0 }; */
GType
-gst_auparse_get_type (void)
+gst_auparse_get_type (void)
{
static GType auparse_type = 0;
if (!auparse_type) {
static const GTypeInfo auparse_info = {
- sizeof(GstAuParseClass),
+ sizeof (GstAuParseClass),
gst_auparse_base_init,
NULL,
(GClassInitFunc) gst_auparse_class_init,
NULL,
NULL,
- sizeof(GstAuParse),
+ sizeof (GstAuParse),
0,
(GInstanceInitFunc) gst_auparse_init,
};
- auparse_type = g_type_register_static (GST_TYPE_ELEMENT, "GstAuParse", &auparse_info, 0);
+
+ auparse_type =
+ g_type_register_static (GST_TYPE_ELEMENT, "GstAuParse", &auparse_info,
+ 0);
}
return auparse_type;
}
}
static void
-gst_auparse_class_init (GstAuParseClass *klass)
+gst_auparse_class_init (GstAuParseClass * klass)
{
+ GObjectClass *gobject_class;
GstElementClass *gstelement_class;
- gstelement_class = (GstElementClass*) klass;
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+ gobject_class->dispose = gst_auparse_dispose;
+
+ gstelement_class->change_state = gst_auparse_change_state;
}
-static void
-gst_auparse_init (GstAuParse *auparse)
+static void
+gst_auparse_init (GstAuParse * auparse)
{
- auparse->sinkpad = gst_pad_new_from_template (
- gst_static_pad_template_get (&gst_auparse_sink_template), "sink");
+ auparse->sinkpad =
+ gst_pad_new_from_template (gst_static_pad_template_get
+ (&gst_auparse_sink_template), "sink");
gst_element_add_pad (GST_ELEMENT (auparse), auparse->sinkpad);
gst_pad_set_chain_function (auparse->sinkpad, gst_auparse_chain);
- auparse->srcpad = gst_pad_new_from_template (
- gst_static_pad_template_get (&gst_auparse_src_template), "src");
+ auparse->srcpad = gst_pad_new_from_template (gst_static_pad_template_get
+ (&gst_auparse_src_template), "src");
+ gst_pad_use_fixed_caps (auparse->srcpad);
gst_element_add_pad (GST_ELEMENT (auparse), auparse->srcpad);
- gst_pad_use_explicit_caps (auparse->srcpad);
auparse->offset = 0;
+ auparse->buffer_offset = 0;
+ auparse->adapter = gst_adapter_new ();
auparse->size = 0;
auparse->encoding = 0;
auparse->frequency = 0;
auparse->channels = 0;
}
-static void
-gst_auparse_chain (GstPad *pad, GstData *_data)
+static void
+gst_auparse_dispose (GObject * object)
+{
+ GstAuParse *au = GST_AUPARSE (object);
+
+ if (au->adapter != NULL) {
+ gst_object_unref (au->adapter);
+ au->adapter = NULL;
+ }
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static GstFlowReturn
+gst_auparse_chain (GstPad * pad, GstBuffer * buf)
{
- GstBuffer *buf = GST_BUFFER (_data);
+ GstFlowReturn ret;
GstAuParse *auparse;
- gchar *data;
+ guchar *data;
glong size;
GstCaps *tempcaps;
- gint law, depth;
- gboolean sign;
+ gint law = 0, depth = 0, ieee = 0;
+ gchar layout[7];
+ GstBuffer *subbuf;
+ GstEvent *event;
- g_return_if_fail (pad != NULL);
- g_return_if_fail (GST_IS_PAD (pad));
- g_return_if_fail (buf != NULL);
+ layout[0] = 0;
auparse = GST_AUPARSE (gst_pad_get_parent (pad));
-
+
GST_DEBUG ("gst_auparse_chain: got buffer in '%s'",
- gst_element_get_name (GST_ELEMENT (auparse)));
+ gst_element_get_name (GST_ELEMENT (auparse)));
data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
/* if we haven't seen any data yet... */
if (auparse->size == 0) {
- GstBuffer *newbuf;
- guint32 *head = (guint32 *)data;
+ guint32 *head = (guint32 *) data;
/* normal format is big endian (au is a Sparc format) */
- if (GUINT32_FROM_BE (*head) == 0x2e736e64) {
+ if (GST_READ_UINT32_BE (head) == 0x2e736e64) { /* ".snd" */
head++;
auparse->le = 0;
- auparse->offset = GUINT32_FROM_BE (*head);
+ auparse->offset = GST_READ_UINT32_BE (head);
head++;
- auparse->size = GUINT32_FROM_BE (*head);
+ /* Do not trust size, could be set to -1 : unknown */
+ auparse->size = GST_READ_UINT32_BE (head);
head++;
- auparse->encoding = GUINT32_FROM_BE (*head);
+ auparse->encoding = GST_READ_UINT32_BE (head);
head++;
- auparse->frequency = GUINT32_FROM_BE (*head);
+ auparse->frequency = GST_READ_UINT32_BE (head);
head++;
- auparse->channels = GUINT32_FROM_BE (*head);
+ auparse->channels = GST_READ_UINT32_BE (head);
head++;
- /* and of course, someone had to invent a little endian
- * version. Used by DEC systems. */
- } else if (GUINT32_FROM_LE (*head) == 0x0064732E) {
- auparse->le = 1;
+ /* and of course, someone had to invent a little endian
+ * version. Used by DEC systems. */
+ } else if (GST_READ_UINT32_LE (head) == 0x0064732E) { /* other source say it is "dns." */
head++;
- auparse->le = 0;
- auparse->offset = GUINT32_FROM_LE (*head);
+ auparse->le = 1;
+ auparse->offset = GST_READ_UINT32_LE (head);
head++;
- auparse->size = GUINT32_FROM_LE (*head);
+ /* Do not trust size, could be set to -1 : unknown */
+ auparse->size = GST_READ_UINT32_LE (head);
head++;
- auparse->encoding = GUINT32_FROM_LE (*head);
+ auparse->encoding = GST_READ_UINT32_LE (head);
head++;
- auparse->frequency = GUINT32_FROM_LE (*head);
+ auparse->frequency = GST_READ_UINT32_LE (head);
head++;
- auparse->channels = GUINT32_FROM_LE (*head);
+ auparse->channels = GST_READ_UINT32_LE (head);
head++;
} else {
- g_warning ("help, dunno what I'm looking at!\n");
- gst_buffer_unref(buf);
- return;
+ GST_ELEMENT_ERROR (auparse, STREAM, WRONG_TYPE, (NULL), (NULL));
+ gst_buffer_unref (buf);
+ g_object_unref (auparse);
+ return GST_FLOW_ERROR;
}
- g_print ("offset %ld, size %ld, encoding %ld, frequency %ld, channels %ld\n",
- auparse->offset,auparse->size,auparse->encoding,
- auparse->frequency,auparse->channels);
- GST_DEBUG ("offset %ld, size %ld, encoding %ld, frequency %ld, channels %ld",
- auparse->offset,auparse->size,auparse->encoding,
- auparse->frequency,auparse->channels);
-
+ GST_DEBUG
+ ("offset %ld, size %ld, encoding %ld, frequency %ld, channels %ld\n",
+ auparse->offset, auparse->size, auparse->encoding, auparse->frequency,
+ auparse->channels);
+
+/*
+Docs :
+ http://www.opengroup.org/public/pubs/external/auformat.html
+ http://astronomy.swin.edu.au/~pbourke/dataformats/au/
+ Solaris headers : /usr/include/audio/au.h
+ libsndfile : src/au.c
+Samples :
+ http://www.tsp.ece.mcgill.ca/MMSP/Documents/AudioFormats/AU/Samples.html
+*/
+
switch (auparse->encoding) {
- case 1:
- law = 1;
- depth = 8;
- sign = FALSE;
- break;
- case 2:
- law = 0;
- depth = 8;
- sign = FALSE;
- break;
- case 3:
- law = 0;
- depth = 16;
- sign = TRUE;
- break;
+
+ case 1: /* 8-bit ISDN mu-law G.711 */
+ law = 1;
+ depth = 8;
+ break;
+ case 27: /* 8-bit ISDN A-law G.711 */
+ law = 2;
+ depth = 8;
+ break;
+
+ case 2: /* 8-bit linear PCM */
+ depth = 8;
+ break;
+ case 3: /* 16-bit linear PCM */
+ depth = 16;
+ break;
+ case 4: /* 24-bit linear PCM */
+ depth = 24;
+ break;
+ case 5: /* 32-bit linear PCM */
+ depth = 32;
+ break;
+
+ case 6: /* 32-bit IEEE floating point */
+ ieee = 1;
+ depth = 32;
+ break;
+ case 7: /* 64-bit IEEE floating point */
+ ieee = 1;
+ depth = 64;
+ break;
+
+ case 23: /* 4-bit CCITT G.721 ADPCM 32kbps -> modplug/libsndfile (compressed 8-bit mu-law) */
+ strcpy (layout, "g721");
+ break;
+ case 24: /* 8-bit CCITT G.722 ADPCM -> rtp */
+ strcpy (layout, "g722");
+ break;
+ case 25: /* 3-bit CCITT G.723.3 ADPCM 24kbps -> rtp/xine/modplug/libsndfile */
+ strcpy (layout, "g723_3");
+ break;
+ case 26: /* 5-bit CCITT G.723.5 ADPCM 40kbps -> rtp/xine/modplug/libsndfile */
+ strcpy (layout, "g723_5");
+ break;
+
+ case 8: /* Fragmented sample data */
+ case 9: /* AU_ENCODING_NESTED */
+
+ case 10: /* DSP program */
+ case 11: /* DSP 8-bit fixed point */
+ case 12: /* DSP 16-bit fixed point */
+ case 13: /* DSP 24-bit fixed point */
+ case 14: /* DSP 32-bit fixed point */
+
+ case 16: /* AU_ENCODING_DISPLAY : non-audio display data */
+ case 17: /* AU_ENCODING_MULAW_SQUELCH */
+
+ case 18: /* 16-bit linear with emphasis */
+ case 19: /* 16-bit linear compressed (NeXT) */
+ case 20: /* 16-bit linear with emphasis and compression */
+
+ case 21: /* Music kit DSP commands */
+ case 22: /* Music kit DSP commands samples */
+
default:
- g_warning ("help!, dont know how to deal with this format yet\n");
- return;
+ GST_ELEMENT_ERROR (auparse, STREAM, FORMAT, (NULL), (NULL));
+ gst_buffer_unref (buf);
+ g_object_unref (auparse);
+ return GST_FLOW_ERROR;
}
if (law) {
- tempcaps = gst_caps_new_simple ("audio/x-alaw",
- "rate", G_TYPE_INT, auparse->frequency,
- "channels", G_TYPE_INT, auparse->channels, NULL);
+ tempcaps =
+ gst_caps_new_simple ((law == 1) ? "audio/x-mulaw" : "audio/x-alaw",
+ "rate", G_TYPE_INT, auparse->frequency,
+ "channels", G_TYPE_INT, auparse->channels, NULL);
+ auparse->sample_size = auparse->channels;
+ } else if (ieee) {
+ tempcaps = gst_caps_new_simple ("audio/x-raw-float",
+ "rate", G_TYPE_INT, auparse->frequency,
+ "channels", G_TYPE_INT, auparse->channels,
+ "endianness", G_TYPE_INT,
+ auparse->le ? G_LITTLE_ENDIAN : G_BIG_ENDIAN,
+ "width", G_TYPE_INT, depth, NULL);
+ auparse->sample_size = auparse->channels * depth / 8;
+ } else if (layout[0]) {
+ tempcaps = gst_caps_new_simple ("audio/x-adpcm",
+ "layout", G_TYPE_STRING, layout, NULL);
+ auparse->sample_size = 0;
} else {
tempcaps = gst_caps_new_simple ("audio/x-raw-int",
- "endianness", G_TYPE_INT, G_BIG_ENDIAN,
- "rate", G_TYPE_INT, auparse->frequency,
- "channels", G_TYPE_INT, auparse->channels,
- "depth", G_TYPE_INT, depth,
- "width", G_TYPE_INT, depth,
- "signed", G_TYPE_BOOLEAN, sign, NULL);
+ "rate", G_TYPE_INT, auparse->frequency,
+ "channels", G_TYPE_INT, auparse->channels,
+ "endianness", G_TYPE_INT,
+ auparse->le ? G_LITTLE_ENDIAN : G_BIG_ENDIAN, "depth", G_TYPE_INT,
+ depth, "width", G_TYPE_INT, depth, "signed", G_TYPE_BOOLEAN, TRUE,
+ NULL);
+ auparse->sample_size = auparse->channels * depth / 8;
}
- if (!gst_pad_set_explicit_caps (auparse->srcpad, tempcaps)) {
- gst_buffer_unref (buf);
- return;
- }
+ gst_pad_set_active (auparse->srcpad, TRUE);
+ gst_pad_set_caps (auparse->srcpad, tempcaps);
+
+ event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_DEFAULT,
+ 0, GST_CLOCK_TIME_NONE, 0);
- newbuf = gst_buffer_new ();
- GST_BUFFER_DATA (newbuf) = (gpointer) malloc (size-(auparse->offset));
- memcpy (GST_BUFFER_DATA (newbuf), data+24, size-(auparse->offset));
- GST_BUFFER_SIZE (newbuf) = size-(auparse->offset);
+ gst_pad_push_event (auparse->srcpad, event);
+
+ subbuf = gst_buffer_create_sub (buf, auparse->offset,
+ size - auparse->offset);
gst_buffer_unref (buf);
- gst_pad_push (auparse->srcpad, GST_DATA (newbuf));
- return;
+ gst_adapter_push (auparse->adapter, subbuf);
+ } else {
+ gst_adapter_push (auparse->adapter, buf);
+ }
+
+ if (auparse->sample_size) {
+ /* Ensure we push a buffer that's a multiple of the frame size downstream */
+ int avail = gst_adapter_available (auparse->adapter);
+
+ avail -= avail % auparse->sample_size;
+
+ if (avail > 0) {
+ const guint8 *data = gst_adapter_peek (auparse->adapter, avail);
+ GstBuffer *newbuf;
+
+ if ((ret =
+ gst_pad_alloc_buffer_and_set_caps (auparse->srcpad,
+ auparse->buffer_offset, avail, GST_PAD_CAPS (auparse->srcpad),
+ &newbuf)) == GST_FLOW_OK) {
+
+ memcpy (GST_BUFFER_DATA (newbuf), data, avail);
+ gst_adapter_flush (auparse->adapter, avail);
+
+ auparse->buffer_offset += avail;
+
+ ret = gst_pad_push (auparse->srcpad, newbuf);
+ }
+ } else
+ ret = GST_FLOW_OK;
+ } else {
+ /* It's something non-trivial (such as ADPCM), we don't understand it, so
+ * just push downstream and assume this will know what to do with it */
+ ret = gst_pad_push (auparse->srcpad, buf);
}
- gst_pad_push (auparse->srcpad, GST_DATA (buf));
+ g_object_unref (auparse);
+
+ return ret;
}
+static GstStateChangeReturn
+gst_auparse_change_state (GstElement * element, GstStateChange transition)
+{
+ GstAuParse *auparse = GST_AUPARSE (element);
+ GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
+
+ if (parent_class->change_state)
+ ret = parent_class->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ gst_adapter_clear (auparse->adapter);
+ auparse->buffer_offset = 0;
+ auparse->offset = 0;
+ auparse->size = 0;
+ auparse->encoding = 0;
+ auparse->frequency = 0;
+ auparse->channels = 0;
+ default:
+ break;
+ }
+
+ return ret;
+}
static gboolean
-plugin_init (GstPlugin *plugin)
+plugin_init (GstPlugin * plugin)
{
if (!gst_element_register (plugin, "auparse", GST_RANK_SECONDARY,
- GST_TYPE_AUPARSE)) {
+ GST_TYPE_AUPARSE)) {
return FALSE;
}
return TRUE;
}
-GST_PLUGIN_DEFINE (
- GST_VERSION_MAJOR,
- GST_VERSION_MINOR,
- "auparse",
- "parses au streams",
- plugin_init,
- VERSION,
- "GPL",
- GST_PACKAGE,
- GST_ORIGIN
-)
-
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "auparse",
+ "parses au streams", plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME,
+ GST_PACKAGE_ORIGIN)
projects / platform / upstream / gst-plugins-good.git / blobdiff