767ee8bad4
There are five libgphoto2 internal *.h include files inside the
source tree's `libgphoto2/` folder. Internal means they are part
of the libgphoto2 implementation, and are not part of the public
libgphoto2 API or ABI. These files have names which are so
generic that it is difficult to see from a `#include` statement
that the included file is actually part of libgphoto2:
bayer-types.h
bayer.h
exif.h
gamma.h
jpeg.h
While building, an additional file is created inside the `libgphoto2/`
folder with a name which does hint to its relationship with libgphoto2:
gphoto2-endian.h
To reduce the probability of accidental conflicts with include files
which might also be called the same very generic name, this changes
the use of these include files to a preprocessor directive like
#include "libgphoto2/bayer.h>
instead of
#include "bayer.h"
To enforce the need for the "libgphoto2/" part in the #include
preprocessor directive, this also removes the respective `-I`
arguments for the `libgphoto2` subdir (both in source tree and in
build tree) from `*_CPPFLAGS`.
This change was inspired by `libgphoto2/` and `camlibs/stv0680/`
containing very different include files both called `bayer.h`.
106 lines
2.8 KiB
C
106 lines
2.8 KiB
C
/* cache.c
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*
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* Copyright 2020 Ondrej Zary <ondrej@zary.sk>
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* based on Docupen tools by Florian Heinz <fh@cronon-ag.de>
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*/
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#include <gphoto2/gphoto2-library.h>
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#include <libgphoto2/gphoto2-endian.h>
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#include "docupen.h"
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static char cmd_datalen[] = { 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1a };
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static char cmd_unknown[] = { 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1a };
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static char cmd_get_all[] = { 0x51, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x1a };
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static bool fill_cache(Camera *camera)
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{
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char *buf;
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int ret;
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size_t pktsize = camera->pl->info.packetsize[2] |
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camera->pl->info.packetsize[1] << 8|
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camera->pl->info.packetsize[0] << 16;
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buf = malloc(pktsize);
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if (!buf)
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return false;
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/* truncate file */
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fclose(camera->pl->cache);
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camera->pl->cache = fopen(camera->pl->cache_file, "w+");
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if (!camera->pl->cache) {
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perror("fopen");
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GP_LOG_E("unable to trunate cache file %s", camera->pl->cache_file);
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free(buf);
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return false;
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}
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dp_cmd(camera->port, cmd_unknown);
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dp_cmd(camera->port, cmd_get_all);
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uint32_t done = 0;
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while (done < camera->pl->datalen) {
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ret = gp_port_read(camera->port, buf, (camera->pl->datalen - done < pktsize) ? camera->pl->datalen-done : pktsize);
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if (ret < 0)
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break;
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fwrite(buf, 1, ret, camera->pl->cache);
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done += ret;
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if ((size_t)ret < pktsize)
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break;
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}
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free(buf);
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return true;
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}
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bool dp_init_cache(Camera *camera)
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{
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if (camera->pl->cache_file)
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return true;
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camera->pl->cache_file = malloc(64 + strlen(getenv("HOME")));
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if (!camera->pl->cache_file)
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return false;
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sprintf(camera->pl->cache_file, "%s/.cache", getenv("HOME"));
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if (!gp_system_is_dir(camera->pl->cache_file) && gp_system_mkdir(camera->pl->cache_file) != GP_OK) {
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GP_LOG_E("unable to create directory %s", camera->pl->cache_file);
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goto err_free;
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}
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sprintf(camera->pl->cache_file, "%s/.cache/docupen-%s.bin", getenv("HOME"), camera->pl->info.serialno);
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camera->pl->cache = fopen(camera->pl->cache_file, "a+");
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if (!camera->pl->cache) {
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perror("fopen");
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GP_LOG_E("unable to open cache file %s", camera->pl->cache_file);
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goto err_free;
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}
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dp_cmd(camera->port, cmd_datalen);
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gp_port_read(camera->port, (void *)&camera->pl->datalen, sizeof(camera->pl->datalen));
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camera->pl->datalen = le32toh(camera->pl->datalen);
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fseek(camera->pl->cache, 0, SEEK_END);
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if (ftell(camera->pl->cache) == camera->pl->datalen) { /* cache is valid */
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if (!dp_init_calibration(camera, false))
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goto err_free;
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return true;
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}
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if (!dp_init_calibration(camera, true)) /* if cache is invalid, update LUT too */
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goto err_free;
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if (fill_cache(camera))
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return true;
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err_free:
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free(camera->pl->cache_file);
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camera->pl->cache_file = NULL;
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return false;
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}
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bool dp_delete_cache(Camera *camera)
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{
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if (camera->pl->cache)
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fclose(camera->pl->cache);
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camera->pl->cache = NULL;
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return !unlink(camera->pl->cache_file);
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}
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