From: Antonio Ospite Date: Sat, 7 Sep 2013 11:24:35 +0000 (+0200) Subject: Initial import X-Git-Url: https://git.ao2.it/experiments/libturbojpeg1.git/commitdiff_plain/1171b5cd8a723ec46f4a3784e0a7e0a9f6fcbd4f?ds=inline Initial import --- 1171b5cd8a723ec46f4a3784e0a7e0a9f6fcbd4f diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..ff2e4b6 --- /dev/null +++ b/Makefile @@ -0,0 +1,39 @@ +CFLAGS = -std=c99 -pedantic -pedantic-errors -Wall -g3 -O2 -D_ANSI_SOURCE_ +CFLAGS += -fno-common \ + -Wall \ + -Wdeclaration-after-statement \ + -Wextra \ + -Wformat=2 \ + -Winit-self \ + -Winline \ + -Wpacked \ + -Wp,-D_FORTIFY_SOURCE=2 \ + -Wpointer-arith \ + -Wlarger-than-65500 \ + -Wmissing-declarations \ + -Wmissing-format-attribute \ + -Wmissing-noreturn \ + -Wmissing-prototypes \ + -Wnested-externs \ + -Wold-style-definition \ + -Wredundant-decls \ + -Wsign-compare \ + -Wstrict-aliasing=2 \ + -Wstrict-prototypes \ + -Wswitch-enum \ + -Wundef \ + -Wunreachable-code \ + -Wunsafe-loop-optimizations \ + -Wunused-but-set-variable \ + -Wwrite-strings + + +LDLIBS += -lturbojpeg + +libturbojpeg1-mem-dest: libturbojpeg1-mem-dest.o + +clean: + rm -rf *~ *.o *.jpg libturbojpeg1-mem-dest + +test: + valgrind --leak-check=full --show-reachable=yes ./libturbojpeg1-mem-dest diff --git a/libturbojpeg1-mem-dest.c b/libturbojpeg1-mem-dest.c new file mode 100644 index 0000000..0cedb8e --- /dev/null +++ b/libturbojpeg1-mem-dest.c @@ -0,0 +1,108 @@ +/* + * libturbojpeg1-mem-dest - an example about reusing the memory buffer with libturbojpeg1 + * + * Copyright (C) 2013 Antonio Ospite + * + * This program 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 3 of the License, or + * (at your option) any later version. + * + * This program 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, see . + */ + +#include +#include +#include +#include + +#define WIDTH 800 +#define HEIGHT 480 + +static unsigned char *new_image(void) +{ + unsigned char *image; + int i; + + image = malloc(WIDTH * HEIGHT * 3 * sizeof(*image)); + if (image == NULL) { + perror("malloc"); + exit(EXIT_FAILURE); + } + + for (i = 0; i < WIDTH * HEIGHT * 3; i++) + image[i] = rand() % 0xff; + + return image; +} + +int main(void) +{ + int i; + tjhandle jpeg_compressor; + unsigned char *out_buf; + unsigned long out_buf_size; + unsigned char *input_image; + int ret; + + jpeg_compressor = tjInitCompress(); + if (jpeg_compressor == NULL) { + fprintf(stderr, "tjInitCompress failed: %s\n", tjGetErrorStr()); + return -1; + } + + out_buf_size = tjBufSize(WIDTH, HEIGHT, TJSAMP_422); + ret = (int) out_buf_size; + if (ret < 0) { + fprintf(stderr, "tjBufSize failed: %s\n", tjGetErrorStr()); + goto out_destroy_compressor; + } + out_buf = malloc(out_buf_size); + + i = 0; + while(i++ < 10) { + input_image = new_image(); + + ret = tjCompress2(jpeg_compressor, input_image, WIDTH, 0, HEIGHT, + TJPF_RGB, &out_buf, &out_buf_size, TJSAMP_422, + 80, TJFLAG_NOREALLOC | TJFLAG_FASTDCT); + if (ret < 0) { + tjGetErrorStr(); + fprintf(stderr, "tjCompress2 failed: %s\n", tjGetErrorStr()); + free(input_image); + goto out_free_buffer; + } + + free(input_image); + + /* Is out_buf_size the number of bytes of the jpeg image, or the + * size of the allocated buffer? */ + fprintf(stderr, "out_buf: %p out_buf_size: %ld\n", out_buf, out_buf_size); + { + char filename[256] = { 0 }; + FILE *out_file; + + snprintf(filename, sizeof(filename), "out%03d.jpg", i); + out_file = fopen(filename, "wb"); + fwrite(out_buf, out_buf_size, 1, out_file); + fclose(out_file); + } + } + + ret = 0; + +out_free_buffer: + free(out_buf); +out_destroy_compressor: + ret = tjDestroy(jpeg_compressor); + if (ret < 0) + fprintf(stderr, "tjDestroy failed: %s\n", tjGetErrorStr()); + + return ret; +}