diff options
Diffstat (limited to 'v4l2-apps/libv4l/libv4lconvert/ov518-decomp.c')
| -rw-r--r-- | v4l2-apps/libv4l/libv4lconvert/ov518-decomp.c | 63 |
1 files changed, 58 insertions, 5 deletions
diff --git a/v4l2-apps/libv4l/libv4lconvert/ov518-decomp.c b/v4l2-apps/libv4l/libv4lconvert/ov518-decomp.c index 6944719bc..f8f37649e 100644 --- a/v4l2-apps/libv4l/libv4lconvert/ov518-decomp.c +++ b/v4l2-apps/libv4l/libv4lconvert/ov518-decomp.c @@ -1,4 +1,6 @@ -/* FIXME FIXME FIXME: get permission to relicense this to LGPL !! */ +/* We would like to embed this inside libv4l, but we cannot as I've failed + to contact Mark W. McClelland to get permission to relicense this, + so this lives in an external (GPL licensed) helper */ /* OV518 Decompression Support Module (No-MMX version) * @@ -14,7 +16,8 @@ */ #include <string.h> -#include "libv4lconvert-priv.h" +#include <unistd.h> +#include "helper-funcs.h" /****************************************************************************** * Compile-time Options @@ -1400,7 +1403,7 @@ Decompress400(unsigned char *pIn, * Output format is planar YUV420 * Returns uncompressed data length if success, or zero if error */ -void v4lconvert_ov518_to_yuv420(unsigned char *src, unsigned char *dst, +static int v4lconvert_ov518_to_yuv420(unsigned char *src, unsigned char *dst, int w, int h, int yvu, int inSize) { struct comp_info cinfo; @@ -1414,10 +1417,60 @@ void v4lconvert_ov518_to_yuv420(unsigned char *src, unsigned char *dst, cinfo.rawLen = inSize; if (get_qt_dynamic(src, &cinfo) < 0) - return; + return -1; /* Decompress, skipping the 8-byte SOF header */ decompress420NoMMXOV518(src + 8, dst, pTmp, w, h, numpix, &cinfo, yvu); - return; + return 0; +} + +int main(int argc, char *argv[]) +{ + int width, height, yvu, src_size, dest_size; + unsigned char src_buf[200000]; + unsigned char dest_buf[500000]; + + while (1) { + if (v4lconvert_helper_read(STDIN_FILENO, &width, sizeof(int), argv[0])) + return 1; /* Erm, no way to recover without loosing sync with libv4l */ + + if (v4lconvert_helper_read(STDIN_FILENO, &height, sizeof(int), argv[0])) + return 1; /* Erm, no way to recover without loosing sync with libv4l */ + + if (v4lconvert_helper_read(STDIN_FILENO, &yvu, sizeof(int), argv[0])) + return 1; /* Erm, no way to recover without loosing sync with libv4l */ + + if (v4lconvert_helper_read(STDIN_FILENO, &src_size, sizeof(int), argv[0])) + return 1; /* Erm, no way to recover without loosing sync with libv4l */ + + if (src_size > sizeof(src_buf)) { + fprintf(stderr, "%s: error: src_buf too small, need: %d\n", + argv[0], src_size); + return 2; + } + + if (v4lconvert_helper_read(STDIN_FILENO, src_buf, src_size, argv[0])) + return 1; /* Erm, no way to recover without loosing sync with libv4l */ + + + dest_size = width * height * 3 / 2; + if (dest_size > sizeof(dest_buf)) { + fprintf(stderr, "%s: error: dest_buf too small, need: %d\n", + argv[0], dest_size); + dest_size = -1; + } else if (v4lconvert_ov518_to_yuv420(src_buf, dest_buf, width, height, + yvu, src_size)) + dest_size = -1; + + if (v4lconvert_helper_write(STDOUT_FILENO, &dest_size, sizeof(int), + argv[0])) + return 1; /* Erm, no way to recover without loosing sync with libv4l */ + + if (dest_size == -1) + continue; + + if (v4lconvert_helper_write(STDOUT_FILENO, dest_buf, dest_size, argv[0])) + return 1; /* Erm, no way to recover without loosing sync with libv4l */ + } } |