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author | Thomas Vander Stichele <thomas@apestaart.org> | 2001-12-22 23:44:44 +0000 |
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committer | Thomas Vander Stichele <thomas@apestaart.org> | 2001-12-22 23:44:44 +0000 |
commit | 6193def94553b6d3e7f39fa975737d43b033a365 (patch) | |
tree | bca8c19e69b0b8119d269c9aa437538b0481c153 /gst-libs/audio/gstaudio.c | |
parent | 41585b7e7836988c2e6ca136f8a85733ff2dc3cc (diff) | |
download | gst-plugins-bad-6193def94553b6d3e7f39fa975737d43b033a365.tar.gz gst-plugins-bad-6193def94553b6d3e7f39fa975737d43b033a365.tar.bz2 gst-plugins-bad-6193def94553b6d3e7f39fa975737d43b033a365.zip |
audio lib removed from this dir
Original commit message from CVS:
audio lib removed from this dir
Diffstat (limited to 'gst-libs/audio/gstaudio.c')
-rw-r--r-- | gst-libs/audio/gstaudio.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/gst-libs/audio/gstaudio.c b/gst-libs/audio/gstaudio.c deleted file mode 100644 index c18d6c6e..00000000 --- a/gst-libs/audio/gstaudio.c +++ /dev/null @@ -1,152 +0,0 @@ -/* 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 "gstaudio.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; -} |