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comparison VSs_tinyjpeg/loadjpeg.c @ 0:a8af8b3fc99d

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author Nina Engelhardt <nengel@mailbox.tu-berlin.de>
date Thu, 05 Jul 2012 11:35:03 +0200
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1 /*
2 * Small jpeg decoder library - testing application
3 *
4 * Copyright (c) 2006, Luc Saillard <luc@saillard.org>
5 * All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * - Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 *
12 * - Redistributions in binary form must reproduce the above copyright notice,
13 * this list of conditions and the following disclaimer in the documentation
14 * and/or other materials provided with the distribution.
15 *
16 * - Neither the name of the author nor the names of its contributors may be
17 * used to endorse or promote products derived from this software without
18 * specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 */
33
34
35 #include <stdio.h>
36 #include <stdint.h>
37 #include <stdlib.h>
38 #include <string.h>
39 #include <sys/time.h>
40
41 #include "tinyjpeg.h"
42 #include "VSs_impl/VSs.h"
43
44 typedef struct timeval timer;
45 #define TIME(x) gettimeofday(&x, NULL);
46
47 long timevaldiff(timer *start, timer *finish);
48
49 static void exitmessage(const char *message)
50 {
51 printf("%s\n", message);
52 exit(0);
53 }
54
55 static int filesize(FILE *fp)
56 {
57 long pos;
58 fseek(fp, 0, SEEK_END);
59 pos = ftell(fp);
60 fseek(fp, 0, SEEK_SET);
61 return pos;
62 }
63
64 /**
65 * Save a buffer in 24bits Targa format
66 * (BGR byte order)
67 */
68 FILE* write_tga_header(const char* filename, int width, int height) {
69 unsigned char targaheader[18];
70 FILE *F;
71 char temp[1024];
72
73 snprintf(temp, sizeof(temp), "%s", filename);
74
75 memset(targaheader,0,sizeof(targaheader));
76
77 targaheader[12] = (unsigned char) (width & 0xFF);
78 targaheader[13] = (unsigned char) (width >> 8);
79 targaheader[14] = (unsigned char) (height & 0xFF);
80 targaheader[15] = (unsigned char) (height >> 8);
81 targaheader[17] = 0x20; /* Top-down, non-interlaced */
82 targaheader[2] = 2; /* image type = uncompressed RGB */
83 targaheader[16] = 24;
84
85
86 F = fopen(temp, "wb");
87 fwrite(targaheader, sizeof(targaheader), 1, F);
88 return F;
89 }
90
91 //todo
92 //#pragma omp task input(*rgb_data) output(*d) inout(*d)
93 void write_tga_task(FILE* fp, int bufferlen, unsigned char* rgb_data, char* d) {
94
95 // To disable ompss warnings
96 d = d;
97 unsigned char *data = rgb_data + bufferlen - RGB_DEPTH;
98 do
99 {
100 unsigned char c = data[0];
101 data[0] = data[2];
102 data[2] = c;
103 data-=RGB_DEPTH;
104 } while (data >= rgb_data);
105
106 fwrite(rgb_data, 1, bufferlen, fp);
107 }
108
109
110 int32 tinyjpegArgTypes[2] = {IN, OUT};
111 int32 tinyjpegArgSizes[2] = {sizeof(struct jdec_private), sizeof(uint8_t)};
112
113 /**
114 * Load one jpeg image, and decompress it, and save the result.
115 */
116 int convert_one_image(const char *infilename, const char *outfilename)
117 {
118 FILE *fp;
119 unsigned int length_of_file;
120 unsigned int width, height;
121 unsigned char *buf;
122 struct jdec_private *jdec; //for parsing header
123 struct jdec_private **jdec_task; //for decoding mcus
124 uint8_t *rgb_data;
125 int i;
126 int ntasks;
127
128 /* Load the Jpeg into memory */
129 fp = fopen(infilename, "rb");
130 if (fp == NULL)
131 perror("Cannot open image");//exitmessage("Cannot open filename\n");
132 length_of_file = filesize(fp);
133 buf = (unsigned char *)malloc(length_of_file + 4);
134 if (buf == NULL)
135 exitmessage("Not enough memory for loading file\n");
136 fread(buf, length_of_file, 1, fp);
137 fclose(fp);
138
139 /* Decompress it */
140 jdec = tinyjpeg_init();
141 if (jdec == NULL)
142 exitmessage("Not enough memory to alloc the structure need for decompressing\n");
143
144 if (tinyjpeg_parse_header(jdec, buf, length_of_file)<0)
145 exitmessage(tinyjpeg_get_errorstring());
146
147 /* Get the size of the image */
148 tinyjpeg_get_size(jdec, &width, &height);
149
150 // RGB stuff
151 rgb_data = (uint8_t *)malloc(width * height * RGB_DEPTH);
152 jdec->components[0] = rgb_data;
153
154 // this jpeg decoder only supports full MCUs for simplicity
155 ntasks = (jdec->mcus_in_width * jdec->mcus_in_height)/ jdec->restart_interval;
156 jdec_task = (struct jdec_private **) malloc ( ntasks * sizeof(struct jdec_private*));
157
158
159 //VSs setup
160 tinyjpegTaskType = VMS_App__malloc( sizeof(VSsTaskType) );
161 tinyjpegTaskType->fn = &tinyjpeg_decode_task;
162 tinyjpegTaskType->numCtldArgs = 2;
163 tinyjpegTaskType->numTotalArgs = 2;
164 tinyjpegTaskType->sizeOfArgs = sizeof(tinyjpeg_decode_task_args);
165 tinyjpegTaskType->argTypes = tinyjpegArgTypes;
166 tinyjpegTaskType->argSizes = tinyjpegArgSizes;
167
168 tinyjpeg_decode_task_args args;
169
170 fp = write_tga_header(outfilename, width, height);
171 printf("Decoding JPEG image...\n");
172 for (i=0; i<ntasks; i++){
173 jdec_task[i] = create_jdec_priv_task(jdec, i);
174
175 args.priv = jdec_task[i];
176 args.context = rgb_data+i*width*RGB_DEPTH*MCU_Y_STRIDE;
177 VSs__submit_task(tinyjpegTaskType, &args, master);
178
179 }
180
181 char dummy;
182 for(i=0; i<ntasks;i++) {
183 write_tga_task(fp, width*RGB_DEPTH*MCU_Y_STRIDE, rgb_data+i*RGB_DEPTH*width*MCU_Y_STRIDE, &dummy);
184 }
185
186 //VSs__wait_for_all_tasks_to_complete();
187 //#pragma omp barrier
188
189 tinyjpeg_free(jdec);
190 for(i=0; i < ntasks; i++) {
191 tinyjpeg_free(jdec_task[i]);
192 }
193 fclose(fp);
194 free(buf);
195 free(rgb_data);
196 free(jdec_task);
197 return 0;
198 }
199
200 /*
201 * Usage information.
202 */
203 static void usage(void)
204 {
205 fprintf(stderr, "Usage: loadjpeg <input_filename.jpeg> <output_filename>\n");
206 exit(1);
207 }
208
209 /*
210 * Calculates the time difference between start and finish in msecs.
211 */
212 long timevaldiff(timer *start, timer *finish){
213 long msec;
214 msec = (finish->tv_sec - start->tv_sec)*1000;
215 msec += (finish->tv_usec - start->tv_usec)/1000;
216 return msec;
217 }
218
219
220 char *output_filename, *input_filename;
221 /**
222 * Benchmark MAIN
223 */
224 int main(int argc, char *argv[])
225 {
226
227 if (argc < 3)
228 usage();
229
230
231 input_filename = argv[1];
232 output_filename = argv[2];
233
234 VSs__create_seed_slave_and_do_work( &convert_one_image_wrapper,
235 NULL );
236
237
238
239 return 0;
240 }
241
242
243
244 void convert_one_image_wrapper( void *_params, SlaveVP *animSlv ){
245 master = animSlv;
246
247 printf("Input file: %s\nOutput file: %s\n",input_filename,output_filename);
248
249 convert_one_image(input_filename, output_filename);
250 }
251