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authorMattias Andrée <maandree@member.fsf.org>2015-12-11 16:13:45 +0100
committerMattias Andrée <maandree@member.fsf.org>2015-12-11 16:13:45 +0100
commit50da9e696d7be359cdbeaf22bd643f3885827a55 (patch)
treec6fdbf869057e5f21155613c1dec2090c096b029 /src
parentmake: missed to add a variable needed at dist (diff)
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the kernel-specific functions can fetch and use additional data it may need
Signed-off-by: Mattias Andrée <maandree@member.fsf.org>
Diffstat (limited to 'src')
-rw-r--r--src/kern-linux.c14
-rw-r--r--src/kern.h14
-rw-r--r--src/png.c6
-rw-r--r--src/png.h4
-rw-r--r--src/pnm.c6
-rw-r--r--src/pnm.h4
-rw-r--r--src/scrotty.c12
7 files changed, 42 insertions, 18 deletions
diff --git a/src/kern-linux.c b/src/kern-linux.c
index 00930f1..7e31d1b 100644
--- a/src/kern-linux.c
+++ b/src/kern-linux.c
@@ -71,10 +71,13 @@ get_fbpath (int altpath, int fbno)
* @param fbpath The path to the framebuffer device..
* @param width Output parameter for the width of the image.
* @param height Output parameter for the height of the image.
+ * @parma data Additional data to pass to `convert_fb_to_pnm`
+ * and `convert_fb_to_png`.
* @return Zero on success, -1 on error.
*/
int
-measure (int fbno, char *restrict fbpath, long *restrict width, long *restrict height)
+measure (int fbno, char *restrict fbpath, long *restrict width,
+ long *restrict height, void **restrict data)
{
static char buf[sizeof (SYSDIR "/class/graphics/fb/virtual_size") + 3 * sizeof(int)];
/* The string "/class/graphics/fb/virtual_size" is large enought for the call (*) "*/
@@ -126,11 +129,12 @@ measure (int fbno, char *restrict fbpath, long *restrict width, long *restrict h
* (a whole number of pixels where available,)
* otherwise, set to the number of bytes a
* pixel is encoded.
+ * @param data Data from `measure`.
* @return Zero on success, -1 on error.
*/
int
-convert_fb_to_pnm (FILE *restrict file, const char *restrict buf,
- size_t n, size_t *restrict adjustment)
+convert_fb_to_pnm (FILE *restrict file, const char *restrict buf, size_t n,
+ size_t *restrict adjustment, void *restrict data)
{
const uint32_t *restrict pixel;
int r, g, b;
@@ -169,10 +173,12 @@ convert_fb_to_pnm (FILE *restrict file, const char *restrict buf,
* pixel is encoded.
* @param state Use this to keep track of where in the you
* stopped. It will be 0 on the first call.
+ * @param data Data from `measure`.
* @return Zero on success, -1 on error.
*/
int convert_fb_to_png (png_struct *pngbuf, png_byte *restrict pixbuf, const char *restrict buf,
- size_t n, long width3, size_t *restrict adjustment, long *restrict state)
+ size_t n, long width3, size_t *restrict adjustment, long *restrict state,
+ void *restrict data)
{
const uint32_t *restrict pixel;
int r, g, b;
diff --git a/src/kern.h b/src/kern.h
index 8c2adf0..5975831 100644
--- a/src/kern.h
+++ b/src/kern.h
@@ -58,9 +58,12 @@ char *get_fbpath (int altpath, int fbno);
* @param fbpath The path to the framebuffer device..
* @param width Output parameter for the width of the image.
* @param height Output parameter for the height of the image.
+ * @parma data Additional data to pass to `convert_fb_to_pnm`
+ * and `convert_fb_to_png`.
* @return Zero on success, -1 on error.
*/
-int measure (int fbno, char *restrict fbpath, long *restrict width, long *restrict height);
+int measure (int fbno, char *restrict fbpath, long *restrict width,
+ long *restrict height, void **restrict data);
/**
* Convert read data from a framebuffer to PNM pixel data.
@@ -72,10 +75,11 @@ int measure (int fbno, char *restrict fbpath, long *restrict width, long *restri
* (a whole number of pixels where available,)
* otherwise, set to the number of bytes a
* pixel is encoded.
+ * @param data Data from `measure`.
* @return Zero on success, -1 on error.
*/
-int convert_fb_to_pnm (FILE *restrict file, const char *restrict buf,
- size_t n, size_t *restrict adjustment);
+int convert_fb_to_pnm (FILE *restrict file, const char *restrict buf, size_t n,
+ size_t *restrict adjustment, void *restrict data);
/**
* Convert read data from a framebuffer to PNG pixel data.
@@ -90,8 +94,10 @@ int convert_fb_to_pnm (FILE *restrict file, const char *restrict buf,
* pixel is encoded.
* @param state Use this to keep track of where in the you
* stopped. It will be 0 on the first call.
+ * @param data Data from `measure`.
* @return Zero on success, -1 on error.
*/
int convert_fb_to_png (png_struct *pngbuf, png_byte *restrict pixbuf, const char *restrict buf,
- size_t n, long width3, size_t *restrict adjustment, long *restrict state);
+ size_t n, long width3, size_t *restrict adjustment, long *restrict state,
+ void *restrict data);
diff --git a/src/png.c b/src/png.c
index b0da466..c66df5e 100644
--- a/src/png.c
+++ b/src/png.c
@@ -37,10 +37,12 @@
* @param width The width of the image.
* @param height The height of the image.
* @param imgfd The file descriptor connected to conversion process's stdin.
+ * @param data Additional data for `convert_fb_to_pnm`
+ * and `convert_fb_to_png`.
* @return Zero on success, -1 on error.
*/
int
-save_png (int fbfd, long width, long height, int imgfd)
+save_png (int fbfd, long width, long height, int imgfd, void *restrict data)
{
char buf[8 << 10];
FILE *file = NULL;
@@ -94,7 +96,7 @@ save_png (int fbfd, long width, long height, int imgfd)
/* Convert read pixels. */
if (convert_fb_to_png (pngbuf, pixbuf, buf, (size_t)got,
- width3, &adjustment, &state) < 0)
+ width3, &adjustment, &state, data) < 0)
goto fail;
/* If we read a whole number of pixels, reset the buffer, otherwise,
diff --git a/src/png.h b/src/png.h
index b621234..0f5d93f 100644
--- a/src/png.h
+++ b/src/png.h
@@ -58,8 +58,10 @@
* @param width The width of the image.
* @param height The height of the image.
* @param imgfd The file descriptor connected to conversion process's stdin.
+ * @param data Additional data for `convert_fb_to_pnm`
+ * and `convert_fb_to_png`.
* @return Zero on success, -1 on error.
*/
int
-save_png (int fbfd, long width, long height, int imgfd);
+save_png (int fbfd, long width, long height, int imgfd, void *restrict data);
diff --git a/src/pnm.c b/src/pnm.c
index da9dd3a..86fa738 100644
--- a/src/pnm.c
+++ b/src/pnm.c
@@ -55,10 +55,12 @@ const char* inttable[] =
* @param width The width of the image.
* @param height The height of the image.
* @param imgfd The file descriptor connected to conversion process's stdin.
+ * @param data Additional data for `convert_fb_to_pnm`
+ * and `convert_fb_to_png`.
* @return Zero on success, -1 on error.
*/
int
-save_pnm (int fbfd, long width, long height, int imgfd)
+save_pnm (int fbfd, long width, long height, int imgfd, void *restrict data)
{
char buf[8 << 10];
FILE *file = NULL;
@@ -88,7 +90,7 @@ save_pnm (int fbfd, long width, long height, int imgfd)
got += off;
/* Convert read pixels. */
- if (convert_fb_to_pnm (file, buf, (size_t)got, &adjustment) < 0)
+ if (convert_fb_to_pnm (file, buf, (size_t)got, &adjustment, data) < 0)
goto fail;
/* If we read a whole number of pixels, reset the buffer, otherwise,
diff --git a/src/pnm.h b/src/pnm.h
index 9721d4c..f13972c 100644
--- a/src/pnm.h
+++ b/src/pnm.h
@@ -54,7 +54,9 @@ extern const char* inttable[];
* @param width The width of the image.
* @param height The height of the image.
* @param imgfd The file descriptor connected to conversion process's stdin.
+ * @param data Additional data for `convert_fb_to_pnm`
+ * and `convert_fb_to_png`.
* @return Zero on success, -1 on error.
*/
-int save_pnm (int fbfd, long width, long height, int imgfd);
+int save_pnm (int fbfd, long width, long height, int imgfd, void *restrict data);
diff --git a/src/scrotty.c b/src/scrotty.c
index 4bc6982..32b2168 100644
--- a/src/scrotty.c
+++ b/src/scrotty.c
@@ -71,10 +71,13 @@ static int try_alt_fbpath = 0;
* @param width The width of the image.
* @param height The height of the image.
* @param raw Save in PNM?
+ * @param data Additional data for `convert_fb_to_pnm`
+ * and `convert_fb_to_png`.
* @return Zero on success, -1 on error.
*/
static int
-save (const char *fbpath, const char *imgpath, long width, long height, int raw)
+save (const char *fbpath, const char *imgpath, long width,
+ long height, int raw, void *restrict data)
{
int imgfd = -1, fbfd;
int saved_errno;
@@ -91,7 +94,7 @@ save (const char *fbpath, const char *imgpath, long width, long height, int raw)
FILE_FAILURE (fbpath);
/* Save image. */
- if ((raw ? save_pnm : save_png) (fbfd, width, height, imgfd) < 0)
+ if ((raw ? save_pnm : save_png) (fbfd, width, height, imgfd, data) < 0)
goto fail;
close (fbfd);
@@ -194,6 +197,7 @@ save_fb (int fbno, int raw, const char *filepattern, const char *execpattern)
char *fbpath; /* Statically allocate string is returned. */
char *execargs = NULL;
long width, height;
+ void *data = NULL;
int i, rc = 0, saved_errno = 0;
/* Get pathname for framebuffer, and stop if we have read all existing ones. */
@@ -202,7 +206,7 @@ save_fb (int fbno, int raw, const char *filepattern, const char *execpattern)
return 1;
/* Get the size of the framebuffer. */
- if (measure (fbno, fbpath, &width, &height) < 0)
+ if (measure (fbno, fbpath, &width, &height, &data) < 0)
goto fail;
/* Get output pathname. */
@@ -220,7 +224,7 @@ save_fb (int fbno, int raw, const char *filepattern, const char *execpattern)
}
/* Take a screenshot of the current framebuffer. */
- if (save (fbpath, imgpath, width, height, raw) < 0)
+ if (save (fbpath, imgpath, width, height, raw, data) < 0)
goto fail;
fprintf (stderr, _("Saved framebuffer %i to %s.\n"), fbno, imgpath);