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Some cleanups and refactoring make ossrc do good negotiation

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Original commit message from CVS:
Some cleanups and refactoring
make ossrc do good negotiation
This commit is contained in:
Wim Taymans 2002-12-07 14:25:18 +00:00
parent 3a96272da6
commit f5743b63de
6 changed files with 299 additions and 241 deletions
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10
sys/oss/Makefile.am
View file

@ -4,7 +4,13 @@ plugin_LTLIBRARIES = libgstossaudio.la
EXTRA_LTLIBRARIES = libgstosshelper.la
libgstossaudio_la_SOURCES = gstosssink.c gstosssrc.c gstossaudio.c gstossgst.c gstossclock.c
libgstossaudio_la_SOURCES = gstosssink.c \
gstosssrc.c \
gstossaudio.c \
gstossgst.c \
gstossclock.c \
gstosscommon.c
libgstossaudio_la_CFLAGS = $(GST_CFLAGS)
libgstossaudio_la_LIBADD =
libgstossaudio_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
@ -12,4 +18,4 @@ libgstossaudio_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstosshelper_la_SOURCES = gstosshelper.c
libgstosshelper_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = gstosssink.h gstosssrc.h gstossgst.h gstossclock.h gstosshelper.h
noinst_HEADERS = gstosssink.h gstosssrc.h gstossgst.h gstossclock.h gstosshelper.h gstosscommon.h

91
sys/oss/gstosscommon.c Normal file
View file

@ -0,0 +1,91 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wim.taymans@chello.be>
*
* gstosssink.c:
*
* 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.
*/
#include "gstosscommon.h"
#include <sys/soundcard.h>
gboolean
gst_ossformat_get (gint law, gint endianness, gboolean sign, gint width, gint depth,
gint *format, gint *bps)
{
if (width != depth)
return FALSE;
*bps = 1;
if (law == 0) {
if (width == 16) {
if (sign == TRUE) {
if (endianness == G_LITTLE_ENDIAN) {
*format = AFMT_S16_LE;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"16 bit signed LE, no law (%d)", *format);
}
else if (endianness == G_BIG_ENDIAN) {
*format = AFMT_S16_BE;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"16 bit signed BE, no law (%d)", *format);
}
}
else {
if (endianness == G_LITTLE_ENDIAN) {
*format = AFMT_U16_LE;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"16 bit unsigned LE, no law (%d)", *format);
}
else if (endianness == G_BIG_ENDIAN) {
*format = AFMT_U16_BE;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"16 bit unsigned BE, no law (%d)", *format);
}
}
*bps = 2;
}
else if (width == 8) {
if (sign == TRUE) {
*format = AFMT_S8;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"8 bit signed, no law (%d)", *format);
}
else {
*format = AFMT_U8;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"8 bit unsigned, no law (%d)", *format);
}
*bps = 1;
}
} else if (law == 1) {
*format = AFMT_MU_LAW;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"mu law (%d)", *format);
} else if (law == 2) {
*format = AFMT_A_LAW;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"a law (%d)", *format);
} else {
g_critical ("unknown law");
return FALSE;
}
return TRUE;
}

31
sys/oss/gstosscommon.h Normal file
View file

@ -0,0 +1,31 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wim.taymans@chello.be>
*
* gstosssink.c:
*
* 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.
*/
#ifndef __GST_OSSFORMAT_H__
#define __GST_OSSFORMAT_H__
#include <gst/gst.h>
gboolean gst_ossformat_get (gint law, gint endianness, gboolean sign,
gint width, gint depth, gint *format, gint *bps);
#endif /* __GST_OSSFORMAT_H__ */

79
sys/oss/gstosssink.c
View file

@ -31,6 +31,7 @@
#include <string.h>
#include <gstosssink.h>
#include <gstosscommon.h>
/* elementfactory information */
static GstElementDetails gst_osssink_details = {
@ -253,7 +254,7 @@ gst_osssink_init (GstOssSink *osssink)
static GstPadConnectReturn
gst_osssink_sinkconnect (GstPad *pad, GstCaps *caps)
{
gint law, endianness, depth;
gint law, endianness, width, depth, bps;
gboolean sign;
gint format = -1;
GstOssSink *osssink = GST_OSSSINK (gst_pad_get_parent (pad));
@ -261,12 +262,14 @@ gst_osssink_sinkconnect (GstPad *pad, GstCaps *caps)
if (!GST_CAPS_IS_FIXED (caps))
return GST_PAD_CONNECT_DELAYED;
gst_caps_get_int (caps, "width", &osssink->width);
gst_caps_get_int (caps, "width", &width);
gst_caps_get_int (caps, "depth", &depth);
if (osssink->width != depth)
if (width != depth)
return GST_PAD_CONNECT_REFUSED;
osssink->width = width;
/* laws 1 and 2 are 1 bps anyway */
osssink->bps = 1;
@ -274,76 +277,16 @@ gst_osssink_sinkconnect (GstPad *pad, GstCaps *caps)
gst_caps_get_int (caps, "endianness", &endianness);
gst_caps_get_boolean (caps, "signed", &sign);
if (law == 0) {
if (osssink->width == 16) {
if (sign == TRUE) {
if (endianness == G_LITTLE_ENDIAN)
if (!gst_ossformat_get (law, endianness, sign,
width, depth, &format, &bps))
{
format = AFMT_S16_LE;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"gst_osssink_sinkconnect: 16 bit signed LE, no law (%d)",
format);
}
else if (endianness == G_BIG_ENDIAN)
{
format = AFMT_S16_BE;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"gst_osssink_sinkconnect: 16 bit signed BE, no law (%d)",
format);
}
}
else {
if (endianness == G_LITTLE_ENDIAN)
{
format = AFMT_U16_LE;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"gst_osssink_sinkconnect: 16 bit unsigned LE, no law (%d)",
format);
}
else if (endianness == G_BIG_ENDIAN)
{
format = AFMT_U16_BE;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"gst_osssink_sinkconnect: 16 bit unsigned BE, no law (%d)",
format);
}
}
osssink->bps = 2;
}
else if (osssink->width == 8) {
if (sign == TRUE) {
format = AFMT_S8;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"gst_osssink_sinkconnect: 8 bit signed, no law (%d)",
format);
}
else {
format = AFMT_U8;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"gst_osssink_sinkconnect: 8 bit unsigned, no law (%d)",
format);
}
osssink->bps = 1;
}
} else if (law == 1) {
format = AFMT_MU_LAW;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"gst_osssink_sinkconnect: mu law (%d)",
format);
} else if (law == 2) {
format = AFMT_A_LAW;
GST_DEBUG (GST_CAT_PLUGIN_INFO,
"gst_osssink_sinkconnect: a law (%d)",
format);
} else {
g_critical ("unknown law");
GST_DEBUG (GST_CAT_PLUGIN_INFO, "could not get format");
return GST_PAD_CONNECT_REFUSED;
}
if (format == -1)
return GST_PAD_CONNECT_REFUSED;
osssink->bps = bps;
osssink->format = format;
gst_caps_get_int (caps, "channels", &osssink->channels);
gst_caps_get_int (caps, "rate", &osssink->frequency);

269
sys/oss/gstosssrc.c
View file

@ -28,6 +28,7 @@
#include <unistd.h>
#include <gstosssrc.h>
#include <gstosscommon.h>
/* elementfactory information */
static GstElementDetails gst_osssrc_details = {
@ -51,10 +52,6 @@ enum {
ARG_0,
ARG_DEVICE,
ARG_BYTESPERREAD,
ARG_CUROFFSET,
ARG_FORMAT,
ARG_CHANNELS,
ARG_FREQUENCY
};
GST_PAD_TEMPLATE_FACTORY (osssrc_src_factory,
@ -87,15 +84,17 @@ GST_PAD_TEMPLATE_FACTORY (osssrc_src_factory,
static void gst_osssrc_class_init (GstOssSrcClass *klass);
static void gst_osssrc_init (GstOssSrc *osssrc);
static void gst_osssrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void gst_osssrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
static GstPadConnectReturn gst_osssrc_srcconnect (GstPad *pad, GstCaps *caps);
static void gst_osssrc_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_osssrc_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static GstElementStateReturn gst_osssrc_change_state (GstElement *element);
static GstPadConnectReturn gst_osssrc_connect (GstPad *pad, GstCaps *caps);
static gboolean gst_osssrc_send_event (GstElement *element, GstEvent *event);
static void gst_osssrc_close_audio (GstOssSrc *src);
static gboolean gst_osssrc_open_audio (GstOssSrc *src);
static void gst_osssrc_sync_parms (GstOssSrc *osssrc);
static gboolean gst_osssrc_sync_parms (GstOssSrc *osssrc);
static GstBuffer * gst_osssrc_get (GstPad *pad);
@ -138,18 +137,6 @@ gst_osssrc_class_init (GstOssSrcClass *klass)
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BYTESPERREAD,
g_param_spec_ulong("bytes_per_read","bytes_per_read","bytes_per_read",
0,G_MAXULONG,0,G_PARAM_READWRITE)); /* CHECKME */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CUROFFSET,
g_param_spec_ulong("curoffset","curoffset","curoffset",
0,G_MAXULONG,0,G_PARAM_READABLE)); /* CHECKME */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FORMAT,
g_param_spec_int("format","format","format",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CHANNELS,
g_param_spec_int("channels","channels","channels",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FREQUENCY,
g_param_spec_int("frequency","frequency","frequency",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE,
g_param_spec_string("device","device","oss device (/dev/dspN usually)",
"default",G_PARAM_READWRITE));
@ -167,19 +154,21 @@ gst_osssrc_init (GstOssSrc *osssrc)
osssrc->srcpad = gst_pad_new_from_template (
GST_PAD_TEMPLATE_GET (osssrc_src_factory), "src");
gst_pad_set_get_function (osssrc->srcpad, gst_osssrc_get);
gst_pad_set_connect_function (osssrc->srcpad, gst_osssrc_connect);
gst_pad_set_connect_function (osssrc->srcpad, gst_osssrc_srcconnect);
gst_element_add_pad (GST_ELEMENT (osssrc), osssrc->srcpad);
osssrc->device = g_strdup ("/dev/dsp");
osssrc->fd = -1;
/* adding some default values */
osssrc->format = AFMT_S16_LE;
osssrc->law = 0;
osssrc->endianness = G_BYTE_ORDER;
osssrc->sign = TRUE;
osssrc->depth = 16;
osssrc->width = 16;
osssrc->channels = 2;
osssrc->frequency = 44100;
osssrc->rate = 44100;
osssrc->need_eos = FALSE;
osssrc->need_sync = FALSE;
osssrc->bytes_per_read = 4096;
osssrc->curoffset = 0;
@ -187,6 +176,82 @@ gst_osssrc_init (GstOssSrc *osssrc)
osssrc->samples_since_basetime = 0;
}
static GstPadConnectReturn
gst_osssrc_srcconnect (GstPad *pad, GstCaps *caps)
{
GstOssSrc *src;
src = GST_OSSSRC(gst_pad_get_parent (pad));
if (!GST_CAPS_IS_FIXED (caps))
return GST_PAD_CONNECT_DELAYED;
gst_caps_get_int (caps, "law", &src->law);
gst_caps_get_int (caps, "endianness", &src->endianness);
gst_caps_get_boolean (caps, "signed", &src->sign);
gst_caps_get_int (caps, "width", &src->width);
gst_caps_get_int (caps, "depth", &src->depth);
gst_caps_get_int (caps, "rate", &src->rate);
gst_caps_get_int (caps, "channels", &src->channels);
if (!gst_osssrc_sync_parms (src))
return GST_PAD_CONNECT_REFUSED;
return GST_PAD_CONNECT_OK;
}
#define GET_FIXED_INT(caps, name, dest) \
G_STMT_START { \
if (gst_caps_has_fixed_property (caps, name)) \
gst_caps_get_int (caps, name, dest); \
} G_STMT_END
#define GET_FIXED_BOOLEAN(caps, name, dest) \
G_STMT_START { \
if (gst_caps_has_fixed_property (caps, name)) \
gst_caps_get_boolean (caps, name, dest); \
} G_STMT_END
static gboolean
gst_osssrc_negotiate (GstPad *pad)
{
GstOssSrc *src;
GstCaps *allowed;
src = GST_OSSSRC(gst_pad_get_parent (pad));
allowed = gst_pad_get_allowed_caps (pad);
/* peel off fixed stuff from the allowed caps */
GET_FIXED_INT (allowed, "law", &src->law);
GET_FIXED_INT (allowed, "endianness", &src->endianness);
GET_FIXED_BOOLEAN (allowed, "signed", &src->sign);
GET_FIXED_INT (allowed, "width", &src->width);
GET_FIXED_INT (allowed, "depth", &src->depth);
GET_FIXED_INT (allowed, "rate", &src->rate);
GET_FIXED_INT (allowed, "channels", &src->channels);
if (!gst_osssrc_sync_parms (src))
return FALSE;
/* set caps on src pad */
if (gst_pad_try_set_caps (src->srcpad,
GST_CAPS_NEW (
"oss_src",
"audio/raw",
"format", GST_PROPS_STRING ("int"),
"law", GST_PROPS_INT (src->law),
"endianness", GST_PROPS_INT (src->endianness),
"signed", GST_PROPS_BOOLEAN (src->sign),
"width", GST_PROPS_INT (src->width),
"depth", GST_PROPS_INT (src->depth),
"rate", GST_PROPS_INT (src->rate),
"channels", GST_PROPS_INT (src->channels)
)) <= 0)
{
return FALSE;
}
return TRUE;
}
static GstBuffer *
gst_osssrc_get (GstPad *pad)
{
@ -195,21 +260,16 @@ gst_osssrc_get (GstPad *pad)
glong readbytes;
glong readsamples;
g_return_val_if_fail (pad != NULL, NULL);
src = GST_OSSSRC(gst_pad_get_parent (pad));
GST_DEBUG (GST_CAT_PLUGIN_INFO, "attempting to read something from the soundcard");
if (src->need_eos) {
/* gst_element_set_eos (GST_ELEMENT (src)); */
src->need_eos = FALSE;
return GST_BUFFER (gst_event_new (GST_EVENT_EOS));
}
buf = gst_buffer_new ();
g_return_val_if_fail (buf, NULL);
GST_BUFFER_DATA (buf) = (gpointer)g_malloc (src->bytes_per_read);
buf = gst_buffer_new_and_alloc (src->bytes_per_read);
readbytes = read (src->fd,GST_BUFFER_DATA (buf),
src->bytes_per_read);
@ -218,43 +278,28 @@ gst_osssrc_get (GstPad *pad)
gst_element_set_eos (GST_ELEMENT (src));
return NULL;
}
if (!GST_PAD_CAPS (pad)) {
/* set caps on src pad */
if (gst_pad_try_set_caps (src->srcpad,
GST_CAPS_NEW (
"oss_src",
"audio/raw",
"format", GST_PROPS_STRING ("int"),
"law", GST_PROPS_INT (0), /*FIXME */
"endianness", GST_PROPS_INT (G_BYTE_ORDER), /*FIXME */
"signed", GST_PROPS_BOOLEAN (TRUE), /*FIXME */
"width", GST_PROPS_INT (src->format),
"depth", GST_PROPS_INT (src->format),
"rate", GST_PROPS_INT (src->frequency),
"channels", GST_PROPS_INT (src->channels)
)) <= 0)
{
gst_element_error (GST_ELEMENT (src), "could not set caps");
/* nothing was negotiated, we can decide on a format */
if (!gst_osssrc_negotiate (pad)) {
gst_element_error (GST_ELEMENT (src), "could not negotiate format");
return NULL;
}
}
else
{
/* where did they come from ? */
gst_caps_debug (gst_pad_get_caps (src->srcpad), "caps were already set on oss");
}
GST_BUFFER_SIZE (buf) = readbytes;
GST_BUFFER_OFFSET (buf) = src->curoffset;
GST_BUFFER_TIMESTAMP (buf) = src->basetime +
src->samples_since_basetime * GST_SECOND / src->frequency;
src->samples_since_basetime * GST_SECOND / src->rate;
src->curoffset += readbytes;
readsamples = readbytes / src->channels;
if (src->format == 16) readsamples /= 2;
if (src->width == 16) readsamples /= 2;
src->samples_since_basetime += readsamples;
GST_DEBUG (GST_CAT_PLUGIN_INFO, "pushed buffer from soundcard of %ld bytes, timestamp %lld", readbytes, GST_BUFFER_TIMESTAMP (buf));
GST_DEBUG (GST_CAT_PLUGIN_INFO, "pushed buffer from soundcard of %ld bytes, timestamp %lld",
readbytes, GST_BUFFER_TIMESTAMP (buf));
return buf;
}
@ -272,22 +317,6 @@ gst_osssrc_set_property (GObject *object, guint prop_id, const GValue *value, GP
case ARG_BYTESPERREAD:
src->bytes_per_read = g_value_get_ulong (value);
break;
case ARG_FORMAT:
src->format = g_value_get_int (value);
break;
case ARG_CHANNELS:
src->channels = g_value_get_int (value);
break;
case ARG_FREQUENCY:
/* Preserve the timestamps */
src->basetime = src->samples_since_basetime * GST_SECOND / src->frequency;
src->samples_since_basetime = 0;
src->frequency = g_value_get_int (value);
break;
case ARG_CUROFFSET:
src->curoffset = g_value_get_ulong (value);
break;
case ARG_DEVICE:
g_free(src->device);
src->device = g_strdup (g_value_get_string (value));
@ -311,18 +340,6 @@ gst_osssrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSp
case ARG_BYTESPERREAD:
g_value_set_ulong (value, src->bytes_per_read);
break;
case ARG_FORMAT:
g_value_set_int (value, src->format);
break;
case ARG_CHANNELS:
g_value_set_int (value, src->channels);
break;
case ARG_FREQUENCY:
g_value_set_int (value, src->frequency);
break;
case ARG_CUROFFSET:
g_value_set_ulong (value, src->curoffset);
break;
case ARG_DEVICE:
g_value_set_string (value, src->device);
break;
@ -337,42 +354,27 @@ gst_osssrc_change_state (GstElement *element)
{
GstOssSrc *osssrc = GST_OSSSRC (element);
g_return_val_if_fail (GST_IS_OSSSRC (element), FALSE);
GST_DEBUG (GST_CAT_PLUGIN_INFO, "osssrc: state change");
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_READY_TO_NULL:
break;
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_PAUSED:
/* Paused state: open device */
if (!GST_FLAG_IS_SET (element, GST_OSSSRC_OPEN)) {
if (!gst_osssrc_open_audio (GST_OSSSRC (element)))
if (!gst_osssrc_open_audio (osssrc))
return GST_STATE_FAILURE;
}
break;
case GST_STATE_PAUSED_TO_READY:
/* Going down to ready: close device */
if (GST_FLAG_IS_SET (element, GST_OSSSRC_OPEN))
gst_osssrc_close_audio (GST_OSSSRC (element));
break;
case GST_STATE_PAUSED_TO_PLAYING:
if (osssrc->need_sync) {
gst_osssrc_sync_parms (GST_OSSSRC (element));
osssrc->need_sync = FALSE;
}
break;
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
if (GST_FLAG_IS_SET (element, GST_OSSSRC_OPEN))
gst_osssrc_close_audio (osssrc);
break;
case GST_STATE_READY_TO_NULL:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
@ -381,25 +383,6 @@ gst_osssrc_change_state (GstElement *element)
return GST_STATE_SUCCESS;
}
static GstPadConnectReturn
gst_osssrc_connect (GstPad *pad,
GstCaps *caps)
{
GstOssSrc *osssrc;
osssrc = GST_OSSSRC (GST_PAD_PARENT (pad));
if (!GST_CAPS_IS_FIXED (caps)) {
return GST_PAD_CONNECT_DELAYED;
}
gst_caps_get_int (caps, "rate", &osssrc->frequency);
gst_caps_get_int (caps, "channels", &osssrc->channels);
osssrc->need_sync = TRUE;
return GST_PAD_CONNECT_OK;
}
static gboolean
gst_osssrc_send_event (GstElement *element,
GstEvent *event)
@ -414,7 +397,6 @@ gst_osssrc_send_event (GstElement *element,
osssrc->need_eos = TRUE;
retval = TRUE;
break;
default:
break;
}
@ -435,7 +417,6 @@ gst_osssrc_open_audio (GstOssSrc *src)
if (src->fd > 0) {
/* set card state */
gst_osssrc_sync_parms (src);
GST_DEBUG (GST_CAT_PLUGIN_INFO,"opened audio: %s",src->device);
GST_FLAG_SET (src, GST_OSSSRC_OPEN);
@ -456,7 +437,7 @@ gst_osssrc_close_audio (GstOssSrc *src)
GST_FLAG_UNSET (src, GST_OSSSRC_OPEN);
}
static void
static gboolean
gst_osssrc_sync_parms (GstOssSrc *osssrc)
{
audio_buf_info ispace;
@ -465,32 +446,39 @@ gst_osssrc_sync_parms (GstOssSrc *osssrc)
* is actually set to ! Setting it to 44101 Hz could cause it to
* be set to 44101, for example
*/
guint rate;
gint format;
gint bps;
guint frequency;
g_return_val_if_fail (osssrc->fd > 0, FALSE);
g_return_if_fail (osssrc != NULL);
g_return_if_fail (GST_IS_OSSSRC (osssrc));
g_return_if_fail (osssrc->fd > 0);
/* get rate, we don't modify the original rate as the audio device
* might not exactly give us the requested value */
rate = osssrc->rate;
frequency = osssrc->frequency;
/* transform format parameters to oss format */
if (!gst_ossformat_get (osssrc->law, osssrc->endianness, osssrc->sign,
osssrc->width, osssrc->depth, &format, &bps))
{
return FALSE;
}
frag = 0x7fff0006;
ioctl(osssrc->fd, SNDCTL_DSP_SETFRAGMENT, &frag);
ioctl(osssrc->fd, SNDCTL_DSP_RESET, 0);
ioctl(osssrc->fd, SNDCTL_DSP_SETFMT, &osssrc->format);
ioctl(osssrc->fd, SNDCTL_DSP_SETFMT, &format);
ioctl(osssrc->fd, SNDCTL_DSP_CHANNELS, &osssrc->channels);
ioctl(osssrc->fd, SNDCTL_DSP_SPEED, &osssrc->frequency);
osssrc->frequency = frequency;
ioctl(osssrc->fd, SNDCTL_DSP_SPEED, &frequency);
ioctl(osssrc->fd, SNDCTL_DSP_SPEED, &rate);
ioctl(osssrc->fd, SNDCTL_DSP_GETISPACE, &ispace);
ioctl(osssrc->fd, SNDCTL_DSP_GETBLKSIZE, &frag);
g_print("setting sound card to %dHz %d bit %s (%d bytes buffer, %d fragment)\n",
osssrc->frequency, osssrc->format,
rate, osssrc->width,
(osssrc->channels == 2) ? "stereo" : "mono", ispace.bytes, frag);
return TRUE;
}
gboolean
@ -498,10 +486,13 @@ gst_osssrc_factory_init (GstPlugin *plugin)
{
GstElementFactory *factory;
factory = gst_element_factory_new ("osssrc", GST_TYPE_OSSSRC, &gst_osssrc_details);
factory = gst_element_factory_new ("osssrc",
GST_TYPE_OSSSRC,
&gst_osssrc_details);
g_return_val_if_fail (factory != NULL, FALSE);
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (osssrc_src_factory));
gst_element_factory_add_pad_template (factory,
GST_PAD_TEMPLATE_GET (osssrc_src_factory));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));

20
sys/oss/gstosssrc.h
View file

@ -28,11 +28,7 @@
#include <config.h>
#include <gst/gst.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
G_BEGIN_DECLS
#define GST_TYPE_OSSSRC \
(gst_osssrc_get_type())
@ -67,11 +63,14 @@ struct _GstOssSrc {
gint fd;
/* audio parameters */
gint format;
gint law;
gint endianness;
gint sign;
gint width;
gint depth;
gint rate;
gint channels;
gint frequency;
gboolean need_sync; /* Do the parameters need resynced? */
gboolean need_eos; /* Do we need to emit an EOS? */
/* blocking */
@ -90,9 +89,6 @@ GType gst_osssrc_get_type(void);
gboolean gst_osssrc_factory_init (GstPlugin *plugin);
#ifdef __cplusplus
}
#endif /* __cplusplus */
G_END_DECLS
#endif /* __GST_OSSSRC_H__ */