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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5362 | serge | 1 | /* |
| 2 | * Small jpeg decoder library - testing application |
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| 3 | * |
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| 4 | * Copyright (c) 2006, Luc Saillard |
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| 5 | * Copyright (c) 2012 Intel Corporation. |
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| 6 | * All rights reserved. |
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| 7 | * Redistribution and use in source and binary forms, with or without |
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| 8 | * modification, are permitted provided that the following conditions are met: |
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| 9 | * |
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| 10 | * - Redistributions of source code must retain the above copyright notice, |
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| 11 | * this list of conditions and the following disclaimer. |
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| 12 | * |
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| 13 | * - Redistributions in binary form must reproduce the above copyright notice, |
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| 14 | * this list of conditions and the following disclaimer in the documentation |
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| 15 | * and/or other materials provided with the distribution. |
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| 16 | * |
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| 17 | * - Neither the name of the author nor the names of its contributors may be |
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| 18 | * used to endorse or promote products derived from this software without |
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| 19 | * specific prior written permission. |
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| 20 | * |
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 22 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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| 25 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 31 | * POSSIBILITY OF SUCH DAMAGE. |
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| 32 | * |
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| 33 | */ |
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| 34 | |||
| 35 | #include "tinyjpeg.h" |
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| 36 | #include |
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| 37 | #include |
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| 38 | #include |
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| 39 | #include |
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| 40 | #include "va_display.h" |
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| 41 | |||
| 42 | static void exitmessage(const char *message) __attribute__((noreturn)); |
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| 43 | static void exitmessage(const char *message) |
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| 44 | { |
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| 45 | printf("%s\n", message); |
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| 46 | exit(0); |
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| 47 | } |
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| 48 | |||
| 49 | static int filesize(FILE *fp) |
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| 50 | { |
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| 51 | long pos; |
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| 52 | fseek(fp, 0, SEEK_END); |
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| 53 | pos = ftell(fp); |
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| 54 | fseek(fp, 0, SEEK_SET); |
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| 55 | return pos; |
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| 56 | } |
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| 57 | |||
| 58 | /** |
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| 59 | * Load one jpeg image, and decompress it, and save the result. |
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| 60 | */ |
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| 61 | int convert_one_image(const char *infilename) |
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| 62 | { |
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| 63 | FILE *fp; |
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| 64 | unsigned int length_of_file; |
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| 65 | unsigned int width, height; |
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| 66 | unsigned char *buf; |
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| 67 | struct jdec_private *jdec; |
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| 68 | |||
| 69 | /* Load the Jpeg into memory */ |
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| 70 | fp = fopen(infilename, "rb"); |
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| 71 | if (fp == NULL) |
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| 72 | exitmessage("Cannot open filename\n"); |
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| 73 | length_of_file = filesize(fp); |
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| 74 | buf = (unsigned char *)malloc(length_of_file + 4); |
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| 75 | if (buf == NULL) |
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| 76 | exitmessage("Not enough memory for loading file\n"); |
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| 77 | fread(buf, length_of_file, 1, fp); |
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| 78 | fclose(fp); |
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| 79 | |||
| 80 | /* Decompress it */ |
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| 81 | jdec = tinyjpeg_init(); |
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| 82 | if (jdec == NULL) |
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| 83 | exitmessage("Not enough memory to alloc the structure need for decompressing\n"); |
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| 84 | |||
| 85 | if (tinyjpeg_parse_header(jdec, buf, length_of_file)<0) |
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| 86 | exitmessage(tinyjpeg_get_errorstring(jdec)); |
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| 87 | |||
| 88 | /* Get the size of the image */ |
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| 89 | tinyjpeg_get_size(jdec, &width, &height); |
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| 90 | |||
| 91 | printf("Decoding JPEG image %dx%d...\n", width, height); |
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| 92 | if (tinyjpeg_decode(jdec) < 0) |
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| 93 | exitmessage(tinyjpeg_get_errorstring(jdec)); |
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| 94 | |||
| 95 | tinyjpeg_free(jdec); |
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| 96 | |||
| 97 | free(buf); |
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| 98 | return 0; |
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| 99 | } |
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| 100 | |||
| 101 | static void usage(void) |
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| 102 | { |
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| 103 | fprintf(stderr, "Usage: loadjpeg |
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| 104 | exit(1); |
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| 105 | } |
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| 106 | |||
| 107 | /** |
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| 108 | * main |
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| 109 | * |
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| 110 | */ |
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| 111 | int main(int argc, char *argv[]) |
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| 112 | { |
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| 113 | char *input_filename; |
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| 114 | clock_t start_time, finish_time; |
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| 115 | unsigned int duration; |
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| 116 | int current_argument; |
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| 117 | |||
| 118 | va_init_display_args(&argc, argv); |
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| 119 | |||
| 120 | if (argc < 2) |
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| 121 | usage(); |
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| 122 | |||
| 123 | current_argument = 1; |
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| 124 | input_filename = argv[current_argument]; |
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| 125 | |||
| 126 | start_time = clock(); |
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| 127 | convert_one_image(input_filename); |
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| 128 | finish_time = clock(); |
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| 129 | duration = finish_time - start_time; |
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| 130 | printf("Decoding finished in %u ticks\n", duration); |
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| 131 | |||
| 132 | return 0; |
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| 133 | } |
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| 134 | |||
| 135 |