mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-26 02:00:33 +00:00
moving and renaming we put the libs in the source in gst-libs/gst/(dir) the headers get installed in prefix/include/g...
Original commit message from CVS: moving and renaming we put the libs in the source in gst-libs/gst/(dir) the headers get installed in prefix/include/gst/(dir) the libs are installed in prefix/lib/gst with a libgst prefix the sources should be without the gst prefix as per irc agreement please comment if this sounds like a bad idea ;)
This commit is contained in:
Thomas Vander Stichele
parent
0e758d6292
commit
41585b7e78
3 changed files with 272 additions and 0 deletions
11
gst-libs/gst/audio/Makefile.am
Normal file
11
gst-libs/gst/audio/Makefile.am
Normal file
|
|
@ -0,0 +1,11 @@
|
||||||
|
## libdir = $(libdir)/gst
|
||||||
|
|
||||||
|
lib_LTLIBRARIES = libgstaudio.la
|
||||||
|
|
||||||
|
libgstaudio_la_SOURCES = audio.c
|
||||||
|
|
||||||
|
libgstaudioincludedir = $(includedir)/gst/audio
|
||||||
|
libgstaudioinclude_HEADERS = audio.h
|
||||||
|
|
||||||
|
libgstaudio_la_LIBADD = $(GST_LIBS)
|
||||||
|
libgstaudio_la_CFLAGS = $(GST_CFLAGS) -finline-functions -ffast-math
|
||||||
152
gst-libs/gst/audio/audio.c
Normal file
152
gst-libs/gst/audio/audio.c
Normal file
|
|
@ -0,0 +1,152 @@
|
||||||
|
/* Gnome-Streamer
|
||||||
|
* 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.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <gst/audio/audio.h>
|
||||||
|
|
||||||
|
int
|
||||||
|
gst_audio_frame_byte_size (GstPad* pad)
|
||||||
|
{
|
||||||
|
/* calculate byte size of an audio frame
|
||||||
|
* this should be moved closer to the gstreamer core
|
||||||
|
* and be implemented for every mime type IMO
|
||||||
|
* returns 0 if there's an error, or the byte size if everything's ok
|
||||||
|
*/
|
||||||
|
|
||||||
|
int width = 0;
|
||||||
|
int channels = 0;
|
||||||
|
|
||||||
|
GstCaps *caps = NULL;
|
||||||
|
|
||||||
|
/* get caps of pad */
|
||||||
|
caps = GST_PAD_CAPS (pad);
|
||||||
|
|
||||||
|
if (caps == NULL)
|
||||||
|
/* ERROR: could not get caps of pad */
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
width = gst_caps_get_int (caps, "width");
|
||||||
|
channels = gst_caps_get_int (caps, "channels");
|
||||||
|
return (width / 8) * channels;
|
||||||
|
}
|
||||||
|
|
||||||
|
long
|
||||||
|
gst_audio_frame_length (GstPad* pad, GstBuffer* buf)
|
||||||
|
/* calculate length of buffer in frames
|
||||||
|
* this should be moved closer to the gstreamer core
|
||||||
|
* and be implemented for every mime type IMO
|
||||||
|
* returns 0 if there's an error, or the number of frames if everything's ok
|
||||||
|
*/
|
||||||
|
{
|
||||||
|
int frame_byte_size = 0;
|
||||||
|
|
||||||
|
frame_byte_size = gst_audio_frame_byte_size (pad);
|
||||||
|
if (frame_byte_size == 0)
|
||||||
|
/* error */
|
||||||
|
return 0;
|
||||||
|
/* FIXME: this function assumes the buffer size to be a whole multiple
|
||||||
|
* of the frame byte size
|
||||||
|
*/
|
||||||
|
return GST_BUFFER_SIZE (buf) / frame_byte_size;
|
||||||
|
}
|
||||||
|
|
||||||
|
long
|
||||||
|
gst_audio_frame_rate (GstPad *pad)
|
||||||
|
/*
|
||||||
|
* calculate frame rate (based on caps of pad)
|
||||||
|
* returns 0 if failed, rate if success
|
||||||
|
*/
|
||||||
|
{
|
||||||
|
GstCaps *caps = NULL;
|
||||||
|
|
||||||
|
/* get caps of pad */
|
||||||
|
caps = GST_PAD_CAPS (pad);
|
||||||
|
|
||||||
|
if (caps == NULL)
|
||||||
|
/* ERROR: could not get caps of pad */
|
||||||
|
return 0;
|
||||||
|
else
|
||||||
|
return gst_caps_get_int (caps, "rate");
|
||||||
|
}
|
||||||
|
|
||||||
|
double
|
||||||
|
gst_audio_length (GstPad* pad, GstBuffer* buf)
|
||||||
|
{
|
||||||
|
/* calculate length in seconds
|
||||||
|
* of audio buffer buf
|
||||||
|
* based on capabilities of pad
|
||||||
|
*/
|
||||||
|
|
||||||
|
long bytes = 0;
|
||||||
|
int width = 0;
|
||||||
|
int channels = 0;
|
||||||
|
long rate = 0L;
|
||||||
|
|
||||||
|
double length;
|
||||||
|
|
||||||
|
GstCaps *caps = NULL;
|
||||||
|
|
||||||
|
/* get caps of pad */
|
||||||
|
caps = GST_PAD_CAPS (pad);
|
||||||
|
if (caps == NULL)
|
||||||
|
{
|
||||||
|
/* ERROR: could not get caps of pad */
|
||||||
|
length = 0.0;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
bytes = GST_BUFFER_SIZE (buf);
|
||||||
|
width = gst_caps_get_int (caps, "width");
|
||||||
|
channels = gst_caps_get_int (caps, "channels");
|
||||||
|
rate = gst_caps_get_int (caps, "rate");
|
||||||
|
|
||||||
|
length = (bytes * 8.0) / (double) (rate * channels * width);
|
||||||
|
}
|
||||||
|
return length;
|
||||||
|
}
|
||||||
|
|
||||||
|
long
|
||||||
|
gst_audio_highest_sample_value (GstPad* pad)
|
||||||
|
/* calculate highest possible sample value
|
||||||
|
* based on capabilities of pad
|
||||||
|
*/
|
||||||
|
{
|
||||||
|
gboolean is_signed = FALSE;
|
||||||
|
gint width = 0;
|
||||||
|
GstCaps *caps = NULL;
|
||||||
|
|
||||||
|
caps = GST_PAD_CAPS (pad);
|
||||||
|
// FIXME : Please change this to a better warning method !
|
||||||
|
if (caps == NULL)
|
||||||
|
printf ("WARNING: gstaudio: could not get caps of pad !\n");
|
||||||
|
width = gst_caps_get_int (caps, "width");
|
||||||
|
is_signed = gst_caps_get_boolean (caps, "signed");
|
||||||
|
if (is_signed) --width;
|
||||||
|
/* example : 16 bit, signed : samples between -32768 and 32767 */
|
||||||
|
return ((long) (1 << width));
|
||||||
|
}
|
||||||
|
|
||||||
|
gboolean
|
||||||
|
gst_audio_is_buffer_framed (GstPad* pad, GstBuffer* buf)
|
||||||
|
/* check if the buffer size is a whole multiple of the frame size */
|
||||||
|
{
|
||||||
|
if (GST_BUFFER_SIZE (buf) % gst_audio_frame_byte_size (pad) == 0)
|
||||||
|
return TRUE;
|
||||||
|
else
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
109
gst-libs/gst/audio/audio.h
Normal file
109
gst-libs/gst/audio/audio.h
Normal file
|
|
@ -0,0 +1,109 @@
|
||||||
|
/* Gnome-Streamer
|
||||||
|
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
||||||
|
* Library <2001> Thomas Vander Stichele <thomas@apestaart.org>
|
||||||
|
*
|
||||||
|
* 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 <gst/gst.h>
|
||||||
|
|
||||||
|
/* for people that are looking at this source: the purpose of these defines is
|
||||||
|
* to make GstCaps a bit easier, in that you don't have to know all of the
|
||||||
|
* properties that need to be defined. you can just use these macros. currently
|
||||||
|
* (8/01) the only plugins that use these are the passthrough, speed, volume,
|
||||||
|
* and [de]interleave plugins. so. these are for convenience only, and do not
|
||||||
|
* specify the 'limits' of gstreamer. you might also use these definitions as a
|
||||||
|
* base for making your own caps, if need be.
|
||||||
|
*
|
||||||
|
* for example, to make a source pad that can output mono streams of either
|
||||||
|
* float or int:
|
||||||
|
|
||||||
|
template = gst_padtemplate_new
|
||||||
|
("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
|
||||||
|
gst_caps_append(gst_caps_new ("sink_int", "audio/raw",
|
||||||
|
GST_AUDIO_INT_PAD_TEMPLATE_PROPS),
|
||||||
|
gst_caps_new ("sink_float", "audio/raw",
|
||||||
|
GST_AUDIO_FLOAT_MONO_PAD_TEMPLATE_PROPS)),
|
||||||
|
NULL);
|
||||||
|
|
||||||
|
srcpad = gst_pad_new_from_template(template,"src");
|
||||||
|
|
||||||
|
* Andy Wingo, 18 August 2001 */
|
||||||
|
|
||||||
|
#define GST_AUDIO_INT_PAD_TEMPLATE_PROPS \
|
||||||
|
gst_props_new (\
|
||||||
|
"format", GST_PROPS_STRING ("int"),\
|
||||||
|
"law", GST_PROPS_INT (0),\
|
||||||
|
"endianness", GST_PROPS_INT (G_BYTE_ORDER),\
|
||||||
|
"signed", GST_PROPS_LIST (\
|
||||||
|
GST_PROPS_BOOLEAN (TRUE),\
|
||||||
|
GST_PROPS_BOOLEAN(FALSE)\
|
||||||
|
),\
|
||||||
|
"width", GST_PROPS_LIST (GST_PROPS_INT(8), GST_PROPS_INT(16)),\
|
||||||
|
"depth", GST_PROPS_LIST (GST_PROPS_INT(8), GST_PROPS_INT(16)),\
|
||||||
|
"rate", GST_PROPS_INT_RANGE (4000, 96000),\
|
||||||
|
"channels", GST_PROPS_INT_RANGE (1, G_MAXINT),\
|
||||||
|
NULL)
|
||||||
|
|
||||||
|
#define GST_AUDIO_INT_MONO_PAD_TEMPLATE_PROPS \
|
||||||
|
gst_props_new (\
|
||||||
|
"format", GST_PROPS_STRING ("int"),\
|
||||||
|
"law", GST_PROPS_INT (0),\
|
||||||
|
"endianness", GST_PROPS_INT (G_BYTE_ORDER),\
|
||||||
|
"signed", GST_PROPS_LIST (\
|
||||||
|
GST_PROPS_BOOLEAN (TRUE),\
|
||||||
|
GST_PROPS_BOOLEAN(FALSE)\
|
||||||
|
),\
|
||||||
|
"width", GST_PROPS_LIST (GST_PROPS_INT(8), GST_PROPS_INT(16)),\
|
||||||
|
"depth", GST_PROPS_LIST (GST_PROPS_INT(8), GST_PROPS_INT(16)),\
|
||||||
|
"rate", GST_PROPS_INT_RANGE (4000, 96000),\
|
||||||
|
"channels", GST_PROPS_INT (1),\
|
||||||
|
NULL)
|
||||||
|
|
||||||
|
#define GST_AUDIO_FLOAT_MONO_PAD_TEMPLATE_PROPS \
|
||||||
|
gst_props_new (\
|
||||||
|
"format", GST_PROPS_STRING ("float"),\
|
||||||
|
"layout", GST_PROPS_STRING ("gfloat"),\
|
||||||
|
"intercept", GST_PROPS_FLOAT (0.0),\
|
||||||
|
"slope", GST_PROPS_FLOAT (1.0),\
|
||||||
|
"rate", GST_PROPS_INT_RANGE (4000, 96000),\
|
||||||
|
"channels", GST_PROPS_INT (1),\
|
||||||
|
NULL)
|
||||||
|
|
||||||
|
/*
|
||||||
|
* this library defines and implements some helper functions for audio
|
||||||
|
* handling
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* get byte size of audio frame (based on caps of pad */
|
||||||
|
int gst_audio_frame_byte_size (GstPad* pad);
|
||||||
|
|
||||||
|
/* get length in frames of buffer */
|
||||||
|
long gst_audio_frame_length (GstPad* pad, GstBuffer* buf);
|
||||||
|
|
||||||
|
/* get frame rate based on caps */
|
||||||
|
long gst_audio_frame_rate (GstPad *pad);
|
||||||
|
|
||||||
|
/* calculate length in seconds of audio buffer buf based on caps of pad */
|
||||||
|
double gst_audio_length (GstPad* pad, GstBuffer* buf);
|
||||||
|
|
||||||
|
/* calculate highest possible sample value based on capabilities of pad */
|
||||||
|
long gst_audio_highest_sample_value (GstPad* pad);
|
||||||
|
|
||||||
|
/* check if the buffer size is a whole multiple of the frame size */
|
||||||
|
gboolean gst_audio_is_buffer_framed (GstPad* pad, GstBuffer* buf);
|
||||||
|
|
||||||
|
|
||||||
Loading…
Reference in a new issue