summaryrefslogtreecommitdiff
path: root/libvo/video_out_pgm.c
diff options
context:
space:
mode:
Diffstat (limited to 'libvo/video_out_pgm.c')
-rw-r--r--libvo/video_out_pgm.c345
1 files changed, 345 insertions, 0 deletions
diff --git a/libvo/video_out_pgm.c b/libvo/video_out_pgm.c
new file mode 100644
index 0000000..ef9ad65
--- /dev/null
+++ b/libvo/video_out_pgm.c
@@ -0,0 +1,345 @@
+/*
+ * video_out_pgm.c
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 2003 Regis Duchesne <hpreg@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ * MD5 code derived from linux kernel GPL implementation
+ *
+ * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
+ * See http://libmpeg2.sourceforge.net/ for updates.
+ *
+ * mpeg2dec is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mpeg2dec 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <inttypes.h>
+
+#include "video_out.h"
+#include "vo_internal.h"
+
+typedef struct pgm_instance_s {
+ vo_instance_t vo;
+ int framenum;
+ int width;
+ int height;
+ int chroma_width;
+ int chroma_height;
+ char header[1024];
+ void (* writer) (struct pgm_instance_s *, uint8_t *, size_t);
+ FILE * file;
+ uint32_t md5_hash[4];
+ uint32_t md5_block[16];
+ uint32_t md5_bytes;
+} pgm_instance_t;
+
+static void file_writer (pgm_instance_t * instance, uint8_t * ptr, size_t size)
+{
+ fwrite (ptr, size, 1, instance->file);
+}
+
+static void internal_draw_frame (pgm_instance_t * instance,
+ uint8_t * const * buf)
+{
+ static uint8_t black[16384] = { 0 };
+ int i;
+
+ instance->writer (instance, (uint8_t *)instance->header,
+ strlen (instance->header));
+ for (i = 0; i < instance->height; i++) {
+ instance->writer (instance, buf[0] + i * instance->width,
+ instance->width);
+ instance->writer (instance, black,
+ 2 * instance->chroma_width - instance->width);
+ }
+ for (i = 0; i < instance->chroma_height; i++) {
+ instance->writer (instance, buf[1] + i * instance->chroma_width,
+ instance->chroma_width);
+ instance->writer (instance, buf[2] + i * instance->chroma_width,
+ instance->chroma_width);
+ }
+}
+
+static void pgm_draw_frame (vo_instance_t * _instance,
+ uint8_t * const * buf, void * id)
+{
+ pgm_instance_t * instance = (pgm_instance_t *) _instance;
+ char filename[128];
+
+ sprintf (filename, "%d.pgm", instance->framenum++);
+ instance->file = fopen (filename, "wb");
+ if (instance->file == NULL)
+ return;
+ internal_draw_frame (instance, buf);
+ fclose (instance->file);
+}
+
+static int pgm_setup (vo_instance_t * _instance, unsigned int width,
+ unsigned int height, unsigned int chroma_width,
+ unsigned int chroma_height, vo_setup_result_t * result)
+{
+ pgm_instance_t * instance;
+
+ instance = (pgm_instance_t *) _instance;
+
+ /*
+ * Layout of the Y, U, and V buffers in our pgm image
+ *
+ * YY YY YY
+ * 420: YY 422: YY 444: YY
+ * UV UV UUVV
+ * UV UUVV
+ */
+ if (width > 2 * chroma_width)
+ return 1;
+
+ instance->width = width;
+ instance->height = height;
+ instance->chroma_width = chroma_width;
+ instance->chroma_height = chroma_height;
+ sprintf (instance->header, "P5\n%d %d\n255\n", 2 * chroma_width,
+ height + chroma_height);
+ result->convert = NULL;
+ return 0;
+}
+
+static vo_instance_t * internal_open (void draw (vo_instance_t *,
+ uint8_t * const *, void *),
+ void writer (pgm_instance_t *,
+ uint8_t *, size_t))
+{
+ pgm_instance_t * instance;
+
+ instance = (pgm_instance_t *) malloc (sizeof (pgm_instance_t));
+ if (instance == NULL)
+ return NULL;
+
+ instance->vo.setup = pgm_setup;
+ instance->vo.setup_fbuf = NULL;
+ instance->vo.set_fbuf = NULL;
+ instance->vo.start_fbuf = NULL;
+ instance->vo.draw = draw;
+ instance->vo.discard = NULL;
+ instance->vo.close = (void (*) (vo_instance_t *)) free;
+ instance->framenum = 0;
+ instance->writer = writer;
+ instance->file = stdout;
+
+ return (vo_instance_t *) instance;
+}
+
+vo_instance_t * vo_pgm_open (void)
+{
+ return internal_open (pgm_draw_frame, file_writer);
+}
+
+static void pgmpipe_draw_frame (vo_instance_t * _instance,
+ uint8_t * const * buf, void * id)
+{
+ pgm_instance_t * instance = (pgm_instance_t *) _instance;
+ internal_draw_frame (instance, buf);
+}
+
+vo_instance_t * vo_pgmpipe_open (void)
+{
+ return internal_open (pgmpipe_draw_frame, file_writer);
+}
+
+#define F1(x,y,z) (z ^ (x & (y ^ z)))
+#define F2(x,y,z) F1 (z, x, y)
+#define F3(x,y,z) (x ^ y ^ z)
+#define F4(x,y,z) (y ^ (x | ~z))
+
+#define MD5STEP(f,w,x,y,z,in,s) do { \
+ w += f (x, y, z) + in; w = ((w << s) | (w >> (32 - s))) + x; \
+} while (0)
+
+static void md5_transform (uint32_t * hash, uint32_t const * in)
+{
+ uint32_t a, b, c, d;
+
+ a = hash[0];
+ b = hash[1];
+ c = hash[2];
+ d = hash[3];
+
+ MD5STEP (F1, a, b, c, d, in[0] + 0xd76aa478, 7);
+ MD5STEP (F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
+ MD5STEP (F1, c, d, a, b, in[2] + 0x242070db, 17);
+ MD5STEP (F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
+ MD5STEP (F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
+ MD5STEP (F1, d, a, b, c, in[5] + 0x4787c62a, 12);
+ MD5STEP (F1, c, d, a, b, in[6] + 0xa8304613, 17);
+ MD5STEP (F1, b, c, d, a, in[7] + 0xfd469501, 22);
+ MD5STEP (F1, a, b, c, d, in[8] + 0x698098d8, 7);
+ MD5STEP (F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
+ MD5STEP (F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
+ MD5STEP (F1, b, c, d, a, in[11] + 0x895cd7be, 22);
+ MD5STEP (F1, a, b, c, d, in[12] + 0x6b901122, 7);
+ MD5STEP (F1, d, a, b, c, in[13] + 0xfd987193, 12);
+ MD5STEP (F1, c, d, a, b, in[14] + 0xa679438e, 17);
+ MD5STEP (F1, b, c, d, a, in[15] + 0x49b40821, 22);
+
+ MD5STEP (F2, a, b, c, d, in[1] + 0xf61e2562, 5);
+ MD5STEP (F2, d, a, b, c, in[6] + 0xc040b340, 9);
+ MD5STEP (F2, c, d, a, b, in[11] + 0x265e5a51, 14);
+ MD5STEP (F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
+ MD5STEP (F2, a, b, c, d, in[5] + 0xd62f105d, 5);
+ MD5STEP (F2, d, a, b, c, in[10] + 0x02441453, 9);
+ MD5STEP (F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
+ MD5STEP (F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
+ MD5STEP (F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
+ MD5STEP (F2, d, a, b, c, in[14] + 0xc33707d6, 9);
+ MD5STEP (F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
+ MD5STEP (F2, b, c, d, a, in[8] + 0x455a14ed, 20);
+ MD5STEP (F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
+ MD5STEP (F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
+ MD5STEP (F2, c, d, a, b, in[7] + 0x676f02d9, 14);
+ MD5STEP (F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
+
+ MD5STEP (F3, a, b, c, d, in[5] + 0xfffa3942, 4);
+ MD5STEP (F3, d, a, b, c, in[8] + 0x8771f681, 11);
+ MD5STEP (F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
+ MD5STEP (F3, b, c, d, a, in[14] + 0xfde5380c, 23);
+ MD5STEP (F3, a, b, c, d, in[1] + 0xa4beea44, 4);
+ MD5STEP (F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
+ MD5STEP (F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
+ MD5STEP (F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
+ MD5STEP (F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
+ MD5STEP (F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
+ MD5STEP (F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
+ MD5STEP (F3, b, c, d, a, in[6] + 0x04881d05, 23);
+ MD5STEP (F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
+ MD5STEP (F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
+ MD5STEP (F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
+ MD5STEP (F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
+
+ MD5STEP (F4, a, b, c, d, in[0] + 0xf4292244, 6);
+ MD5STEP (F4, d, a, b, c, in[7] + 0x432aff97, 10);
+ MD5STEP (F4, c, d, a, b, in[14] + 0xab9423a7, 15);
+ MD5STEP (F4, b, c, d, a, in[5] + 0xfc93a039, 21);
+ MD5STEP (F4, a, b, c, d, in[12] + 0x655b59c3, 6);
+ MD5STEP (F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
+ MD5STEP (F4, c, d, a, b, in[10] + 0xffeff47d, 15);
+ MD5STEP (F4, b, c, d, a, in[1] + 0x85845dd1, 21);
+ MD5STEP (F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
+ MD5STEP (F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
+ MD5STEP (F4, c, d, a, b, in[6] + 0xa3014314, 15);
+ MD5STEP (F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
+ MD5STEP (F4, a, b, c, d, in[4] + 0xf7537e82, 6);
+ MD5STEP (F4, d, a, b, c, in[11] + 0xbd3af235, 10);
+ MD5STEP (F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
+ MD5STEP (F4, b, c, d, a, in[9] + 0xeb86d391, 21);
+
+ hash[0] += a;
+ hash[1] += b;
+ hash[2] += c;
+ hash[3] += d;
+}
+
+static inline uint32_t swap (uint32_t x)
+{
+ return (((x & 0xff) << 24) | ((x & 0xff00) << 8) |
+ ((x & 0xff0000) >> 8) | ((x & 0xff000000) >> 24));
+}
+
+static inline void little_endian (uint32_t * buf, unsigned int words)
+{
+#ifdef WORDS_BIGENDIAN
+ while (words--)
+ buf[words] = swap (buf[words]);
+#endif
+}
+
+static void md5_writer (pgm_instance_t * instance, uint8_t * ptr, size_t size)
+{
+ const unsigned int offset = instance->md5_bytes & 0x3f;
+
+ instance->md5_bytes += size;
+
+ if (offset + size < 64) {
+ memcpy ((char *)instance->md5_block + offset, ptr, size);
+ return;
+ } else if (offset) {
+ const int avail = 64 - offset;
+ memcpy ((char *)instance->md5_block + offset, ptr, avail);
+ little_endian (instance->md5_block, 16);
+ md5_transform (instance->md5_hash, instance->md5_block);
+ ptr += avail;
+ size -= avail;
+ }
+
+ while (size >= 64) {
+#ifndef ARCH_X86
+ memcpy (instance->md5_block, ptr, 64);
+ little_endian (instance->md5_block, 16);
+ md5_transform (instance->md5_hash, instance->md5_block);
+#else
+ md5_transform (instance->md5_hash, (uint32_t *)ptr);
+#endif
+ ptr += 64;
+ size -= 64;
+ }
+
+ memcpy (instance->md5_block, ptr, size);
+}
+
+static void md5_draw_frame (vo_instance_t * _instance,
+ uint8_t * const * buf, void * id)
+{
+ pgm_instance_t * instance = (pgm_instance_t *) _instance;
+ unsigned int offset;
+ uint8_t * p;
+ int padding;
+
+ instance->md5_hash[0] = 0x67452301;
+ instance->md5_hash[1] = 0xefcdab89;
+ instance->md5_hash[2] = 0x98badcfe;
+ instance->md5_hash[3] = 0x10325476;
+ instance->md5_bytes = 0;
+
+ internal_draw_frame (instance, buf);
+
+ offset = instance->md5_bytes & 0x3f;
+ p = (uint8_t *)instance->md5_block + offset;
+ padding = 55 - offset;
+
+ *p++ = 0x80;
+ if (padding < 0) {
+ memset (p, 0, padding + 8);
+ little_endian (instance->md5_block, 16);
+ md5_transform (instance->md5_hash, instance->md5_block);
+ p = (uint8_t *)instance->md5_block;
+ padding = 56;
+ }
+
+ memset (p, 0, padding);
+ instance->md5_block[14] = instance->md5_bytes << 3;
+ instance->md5_block[15] = instance->md5_bytes >> 29;
+ little_endian (instance->md5_block, 14);
+ md5_transform (instance->md5_hash, instance->md5_block);
+
+ printf ("%08x%08x%08x%08x *%d.pgm\n", swap (instance->md5_hash[0]),
+ swap (instance->md5_hash[1]) , swap (instance->md5_hash[2]),
+ swap (instance->md5_hash[3]), instance->framenum++);
+}
+
+vo_instance_t * vo_md5_open (void)
+{
+ return internal_open (md5_draw_frame, md5_writer);
+}
View Lorry Controller Status