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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.
125 lines
3.4 KiB
C
125 lines
3.4 KiB
C
/*
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* default memory allocator for libavcodec
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* Copyright (c) 2002 Fabrice Bellard.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* @file mem.c
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* default memory allocator for libavcodec.
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*/
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#include "avcodec.h"
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/* here we can use OS dependant allocation functions */
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#undef malloc
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#undef free
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#undef realloc
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#include <stdlib.h>
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#ifdef HAVE_MALLOC_H
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#include <malloc.h>
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#endif
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/* you can redefine av_malloc and av_free in your project to use your
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memory allocator. You do not need to suppress this file because the
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linker will do it automatically */
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/**
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* Memory allocation of size byte with alignment suitable for all
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* memory accesses (including vectors if available on the
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* CPU). av_malloc(0) must return a non NULL pointer.
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*/
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void *
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av_malloc (unsigned int size)
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{
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void *ptr;
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#ifdef MEMALIGN_HACK
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int diff;
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ptr = malloc (size + 16 + 1);
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diff = ((-(int) ptr - 1) & 15) + 1;
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ptr += diff;
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((char *) ptr)[-1] = diff;
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#elif defined (HAVE_MEMALIGN)
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ptr = memalign (16, size);
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/* Why 64?
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Indeed, we should align it:
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on 4 for 386
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on 16 for 486
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on 32 for 586, PPro - k6-III
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on 64 for K7 (maybe for P3 too).
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Because L1 and L2 caches are aligned on those values.
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But I don't want to code such logic here!
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*/
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/* Why 16?
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because some cpus need alignment, for example SSE2 on P4, & most RISC cpus
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it will just trigger an exception and the unaligned load will be done in the
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exception handler or it will just segfault (SSE2 on P4)
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Why not larger? because i didnt see a difference in benchmarks ...
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*/
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/* benchmarks with p3
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memalign(64)+1 3071,3051,3032
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memalign(64)+2 3051,3032,3041
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memalign(64)+4 2911,2896,2915
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memalign(64)+8 2545,2554,2550
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memalign(64)+16 2543,2572,2563
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memalign(64)+32 2546,2545,2571
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memalign(64)+64 2570,2533,2558
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btw, malloc seems to do 8 byte alignment by default here
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*/
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#else
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ptr = malloc (size);
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#endif
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return ptr;
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}
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/**
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* av_realloc semantics (same as glibc): if ptr is NULL and size > 0,
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* identical to malloc(size). If size is zero, it is identical to
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* free(ptr) and NULL is returned.
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*/
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void *
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av_realloc (void *ptr, unsigned int size)
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{
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#ifdef MEMALIGN_HACK
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//FIXME this isnt aligned correctly though it probably isnt needed
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int diff;
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if (!ptr)
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return av_malloc (size);
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diff = ((char *) ptr)[-1];
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return realloc (ptr - diff, size + diff) + diff;
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#else
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return realloc (ptr, size);
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#endif
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}
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/* NOTE: ptr = NULL is explicetly allowed */
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void
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av_free (void *ptr)
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{
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/* XXX: this test should not be needed on most libcs */
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if (ptr)
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#ifdef MEMALIGN_HACK
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free (ptr - ((char *) ptr)[-1]);
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#else
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free (ptr);
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#endif
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}
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