[FFmpeg-cvslog] avcodec/jpeg2000dwt: add test for the 5/3 wavelet
Michael Niedermayer
git at videolan.org
Sat Jun 20 01:38:47 CEST 2015
ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sat Jun 20 01:24:08 2015 +0200| [de99ce4306b1ea84fe28c44d76c4df8316ef4359] | committer: Michael Niedermayer
avcodec/jpeg2000dwt: add test for the 5/3 wavelet
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=de99ce4306b1ea84fe28c44d76c4df8316ef4359
---
libavcodec/Makefile | 1 +
libavcodec/jpeg2000dwt.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 57 insertions(+)
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 98af702..7a964ec 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -892,6 +892,7 @@ SKIPHEADERS-$(CONFIG_VDA) += vda.h vda_internal.h
SKIPHEADERS-$(CONFIG_VDPAU) += vdpau.h vdpau_internal.h
TESTPROGS = imgconvert \
+ jpeg2000dwt \
mathops \
options \
avfft \
diff --git a/libavcodec/jpeg2000dwt.c b/libavcodec/jpeg2000dwt.c
index 381764f..d0cfc9a 100644
--- a/libavcodec/jpeg2000dwt.c
+++ b/libavcodec/jpeg2000dwt.c
@@ -606,3 +606,59 @@ void ff_dwt_destroy(DWTContext *s)
av_freep(&s->f_linebuf);
av_freep(&s->i_linebuf);
}
+
+#ifdef TEST
+
+#include "libavutil/lfg.h"
+
+#define MAX_W 256
+
+int main(void) {
+ int array[MAX_W * MAX_W];
+ int ref [MAX_W * MAX_W];
+ AVLFG prng;
+ int i,j;
+ DWTContext s1={{{0}}}, *s= &s1;
+ uint16_t border[2][2];
+ int ret, decomp_levels;
+
+ av_lfg_init(&prng, 1);
+
+ for (i = 0; i<MAX_W * MAX_W; i++)
+ array[i] = ref[i] = av_lfg_get(&prng) % 2048;
+
+ for (i = 0; i < 40; i++) {
+ for (j=0; j<4; j++)
+ border[0][j] = av_lfg_get(&prng) % MAX_W;
+ border[0][0] = border [1][0] =0;
+ if (border[0][0] >= border[0][1] || border[1][0] >= border[1][1])
+ continue;
+ decomp_levels = av_lfg_get(&prng) % FF_DWT_MAX_DECLVLS;
+ ret = ff_jpeg2000_dwt_init(s, border, decomp_levels, FF_DWT53);
+ if (ret < 0) {
+ fprintf(stderr, "ff_jpeg2000_dwt_init failed\n");
+ return 1;
+ }
+ ret = ff_dwt_encode(s, array);
+ if (ret < 0) {
+ fprintf(stderr, "ff_dwt_encode failed\n");
+ return 1;
+ }
+ ret = ff_dwt_decode(s, array);
+ if (ret < 0) {
+ fprintf(stderr, "ff_dwt_encode failed\n");
+ return 1;
+ }
+ for (j = 0; j<MAX_W * MAX_W; j++)
+ if (array[j] != ref[j]) {
+ fprintf(stderr, "missmatch at %d (%d != %d) decomp:%d border %d %d %d %d\n",
+ j, array[j], ref[j],decomp_levels, border[0][0], border[0][1], border[1][0], border[1][1]);
+ return 2;
+ }
+ ff_dwt_destroy(s);
+ }
+
+ return 0;
+}
+
+#endif
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