gstreamer/gst/ffmpegcolorspace/utils.c

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/*
* utils for libavcodec
* Copyright (c) 2001 Fabrice Bellard.
* Copyright (c) 2003 Michel Bardiaux for the av_log API
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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
*/
/**
* @file utils.c
* utils.
*/
#include "avcodec.h"
#include "dsputil.h"
gst/ffmpegcolorspace/: Sync back from gst-ffmpeg. Deprecates ffcolorspace. Adds pallette handling plus update from ff... Original commit message from CVS: * gst/ffmpegcolorspace/Makefile.am: * gst/ffmpegcolorspace/avcodec.h: * gst/ffmpegcolorspace/common.h: * gst/ffmpegcolorspace/dsputil.c: (dsputil_static_init): * gst/ffmpegcolorspace/dsputil.h: * gst/ffmpegcolorspace/gstffmpeg.c: (plugin_init): * gst/ffmpegcolorspace/gstffmpegcodecmap.c: (gst_ffmpeg_get_palette), (gst_ffmpeg_set_palette), (gst_ffmpeg_pixfmt_to_caps), (gst_ffmpeg_smpfmt_to_caps), (gst_ffmpegcsp_codectype_to_caps), (gst_ffmpeg_caps_to_smpfmt), (gst_ffmpeg_caps_to_pixfmt), (gst_ffmpegcsp_caps_with_codectype), (gst_ffmpegcsp_avpicture_fill): * gst/ffmpegcolorspace/gstffmpegcodecmap.h: * gst/ffmpegcolorspace/gstffmpegcolorspace.c: (gst_ffmpegcsp_caps_remove_format_info), (gst_ffmpegcsp_getcaps), (gst_ffmpegcsp_pad_link), (gst_ffmpegcsp_get_type), (gst_ffmpegcsp_base_init), (gst_ffmpegcsp_class_init), (gst_ffmpegcsp_init), (gst_ffmpegcsp_chain), (gst_ffmpegcsp_change_state), (gst_ffmpegcsp_set_property), (gst_ffmpegcsp_get_property), (gst_ffmpegcolorspace_register): * gst/ffmpegcolorspace/imgconvert.c: (avcodec_get_chroma_sub_sample), (avcodec_get_pix_fmt_name), (avcodec_get_pix_fmt), (avpicture_fill), (avpicture_layout), (avpicture_get_size), (avcodec_get_pix_fmt_loss), (avg_bits_per_pixel), (avcodec_find_best_pix_fmt1), (avcodec_find_best_pix_fmt), (img_copy_plane), (img_copy), (yuv422_to_yuv420p), (uyvy422_to_yuv420p), (uyvy422_to_yuv422p), (yuv422_to_yuv422p), (yuv422p_to_yuv422), (yuv422p_to_uyvy422), (uyvy411_to_yuv411p), (yuv420p_to_yuv422), (C_JPEG_TO_CCIR), (img_convert_init), (img_apply_table), (shrink41), (shrink21), (shrink12), (shrink22), (shrink44), (grow21_line), (grow41_line), (grow21), (grow22), (grow41), (grow44), (conv411), (gif_clut_index), (build_rgb_palette), (bitcopy_n), (mono_to_gray), (monowhite_to_gray), (monoblack_to_gray), (gray_to_mono), (gray_to_monowhite), (gray_to_monoblack), (avpicture_alloc), (avpicture_free), (is_yuv_planar), (img_convert), (get_alpha_info_pal8), (img_get_alpha_info), (deinterlace_line), (deinterlace_line_inplace), (deinterlace_bottom_field), (deinterlace_bottom_field_inplace), (avpicture_deinterlace): * gst/ffmpegcolorspace/imgconvert_template.h: * gst/ffmpegcolorspace/mem.c: (av_malloc), (av_realloc), (av_free): * gst/ffmpegcolorspace/mmx.h: * gst/ffmpegcolorspace/utils.c: (av_mallocz), (av_strdup), (av_fast_realloc), (av_mallocz_static), (av_free_static), (av_freep), (avcodec_get_context_defaults), (avcodec_alloc_context), (avcodec_init): Sync back from gst-ffmpeg. Deprecates ffcolorspace. Adds pallette handling plus update from ffmpeg CVS. Large clean-up.
2004-10-31 14:33:18 +00:00
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <limits.h>
void *
av_mallocz (unsigned int size)
{
void *ptr;
ptr = av_malloc (size);
if (!ptr)
return NULL;
memset (ptr, 0, size);
return ptr;
}
char *
av_strdup (const char *s)
{
char *ptr;
int len;
len = strlen (s) + 1;
ptr = av_malloc (len);
if (!ptr)
return NULL;
memcpy (ptr, s, len);
return ptr;
}
/**
* realloc which does nothing if the block is large enough
*/
void *
av_fast_realloc (void *ptr, unsigned int *size, unsigned int min_size)
{
if (min_size < *size)
return ptr;
*size = 17 * min_size / 16 + 32;
return av_realloc (ptr, *size);
}
static unsigned int last_static = 0;
static unsigned int allocated_static = 0;
static void **array_static = NULL;
/**
* allocation of static arrays - do not use for normal allocation.
*/
void *
av_mallocz_static (unsigned int size)
{
void *ptr = av_mallocz (size);
if (ptr) {
array_static =
av_fast_realloc (array_static, &allocated_static,
sizeof (void *) * (last_static + 1));
array_static[last_static++] = ptr;
}
return ptr;
}
/**
* free all static arrays and reset pointers to 0.
*/
void
av_free_static (void)
{
while (last_static) {
av_freep (&array_static[--last_static]);
}
av_freep (&array_static);
}
/**
* Frees memory and sets the pointer to NULL.
* @param arg pointer to the pointer which should be freed
*/
void
av_freep (void *arg)
{
void **ptr = (void **) arg;
av_free (*ptr);
*ptr = NULL;
}
void
avcodec_get_context_defaults (AVCodecContext * s)
{
memset (s, 0, sizeof (AVCodecContext));
s->frame_rate_base = 1;
s->frame_rate = 25;
}
/**
* allocates a AVCodecContext and set it to defaults.
* this can be deallocated by simply calling free()
*/
AVCodecContext *
avcodec_alloc_context (void)
{
AVCodecContext *avctx = av_malloc (sizeof (AVCodecContext));
if (avctx == NULL)
return NULL;
avcodec_get_context_defaults (avctx);
return avctx;
}
/* must be called before any other functions */
void
avcodec_init (void)
{
static int inited = 0;
if (inited != 0)
return;
inited = 1;
dsputil_static_init ();
}