diff options
Diffstat (limited to 'gst-libs')
| -rw-r--r-- | gst-libs/gst/idct/Makefile.am | 31 | ||||
| -rw-r--r-- | gst-libs/gst/idct/idct.c | 128 |
2 files changed, 159 insertions, 0 deletions
diff --git a/gst-libs/gst/idct/Makefile.am b/gst-libs/gst/idct/Makefile.am new file mode 100644 index 00000000..8dabafab --- /dev/null +++ b/gst-libs/gst/idct/Makefile.am @@ -0,0 +1,31 @@ +if HAVE_LIBMMX +GSTIDCTARCH_SRCS = mmxidct.S mmx32idct.c sseidct.S +else +GSTIDCTARCH_SRCS = +endif + +librarydir = $(libdir)/gst + +library_LTLIBRARIES = libgstidct.la + +libgstidct_la_SOURCES = \ + fastintidct.c \ + floatidct.c \ + gstidct.c \ + intidct.c \ + $(GSTIDCTARCH_SRCS) + +libgstidctincludedir = $(includedir)/gst/idct +libgstidctinclude_HEADERS = idct.h + +check_PROGRAMS = ieeetest + +ieeetest_SOURCES = ieeetest.c +ieeetest_LDADD = libgstidct.la +ieeetest_CFLAGS = $(GST_CFLAGS) +ieeetest_LDFLAGS = $(GST_LIBS) + +noinst_HEADERS = dct.h + +libgstidct_la_LIBADD = $(GST_LIBS) +libgstidct_la_CFLAGS = $(GST_CFLAGS) -finline-functions -ffast-math diff --git a/gst-libs/gst/idct/idct.c b/gst-libs/gst/idct/idct.c new file mode 100644 index 00000000..ae180e36 --- /dev/null +++ b/gst-libs/gst/idct/idct.c @@ -0,0 +1,128 @@ +/* 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 <config.h> + +#include <gst/gst.h> +#include "gstidct.h" +#include "dct.h" + +static void gst_idct_int_sparse_idct(short *data); + +GstIDCT *gst_idct_new(GstIDCTMethod method) +{ + GstIDCT *new = g_malloc(sizeof(GstIDCT)); + + new->need_transpose = FALSE; + + if (method == GST_IDCT_DEFAULT) { +#ifdef HAVE_LIBMMX + if (gst_cpu_get_flags() & GST_CPU_FLAG_MMX) { + method = GST_IDCT_MMX; + } + /* disabled for now + if (gst_cpu_get_flags() & GST_CPU_FLAG_SSE) { + method = GST_IDCT_SSE; + } + */ + else +#endif /* HAVE_LIBMMX */ + { + method = GST_IDCT_FAST_INT; + } + } + + new->convert_sparse = gst_idct_int_sparse_idct; + + switch (method) { + case GST_IDCT_FAST_INT: + GST_INFO (GST_CAT_PLUGIN_INFO, "using fast_int_idct"); + gst_idct_init_fast_int_idct(); + new->convert = gst_idct_fast_int_idct; + break; + case GST_IDCT_INT: + GST_INFO (GST_CAT_PLUGIN_INFO, "using int_idct"); + new->convert = gst_idct_int_idct; + break; + case GST_IDCT_FLOAT: + GST_INFO (GST_CAT_PLUGIN_INFO, "using float_idct"); + gst_idct_init_float_idct(); + new->convert = gst_idct_float_idct; + break; +#ifdef HAVE_LIBMMX + case GST_IDCT_MMX: + GST_INFO (GST_CAT_PLUGIN_INFO, "using MMX_idct"); + new->convert = gst_idct_mmx_idct; + new->need_transpose = TRUE; + break; + case GST_IDCT_MMX32: + GST_INFO (GST_CAT_PLUGIN_INFO, "using MMX32_idct"); + new->convert = gst_idct_mmx32_idct; + new->need_transpose = TRUE; + break; + case GST_IDCT_SSE: + GST_INFO (GST_CAT_PLUGIN_INFO, "using SSE_idct"); + new->convert = gst_idct_sse_idct; + new->need_transpose = TRUE; + break; +#endif /* HAVE_LIBMMX */ + default: + GST_INFO (GST_CAT_PLUGIN_INFO, "method not supported"); + g_free(new); + return NULL; + } + return new; +} + +static void gst_idct_int_sparse_idct(short *data) +{ + short val; + gint32 v, *dp = (guint32 *)data; + + v = *data; + + if (v < 0) { + val = -v; + val += (8 >> 1); + val /= 8; + val = -val; + } + else { + val = (v + (8 >> 1)) / 8; + } + v = (( val & 0xffff) | (val << 16)); + + dp[0] = v; dp[1] = v; dp[2] = v; dp[3] = v; + dp[4] = v; dp[5] = v; dp[6] = v; dp[7] = v; + dp[8] = v; dp[9] = v; dp[10] = v; dp[11] = v; + dp[12] = v; dp[13] = v; dp[14] = v; dp[15] = v; + dp[16] = v; dp[17] = v; dp[18] = v; dp[19] = v; + dp[20] = v; dp[21] = v; dp[22] = v; dp[23] = v; + dp[24] = v; dp[25] = v; dp[26] = v; dp[27] = v; + dp[28] = v; dp[29] = v; dp[30] = v; dp[31] = v; +} + +void gst_idct_destroy(GstIDCT *idct) +{ + g_return_if_fail(idct != NULL); + + g_free(idct); +} + |