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[media] vivid-tpg: add const where appropriate

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Added 'const' to several functions where that is possible to do.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Hans Verkuil 2015-03-09 11:04:02 -03:00 committed by Mauro Carvalho Chehab
parent 9991deff1a
commit dfff048953
2 changed files with 9 additions and 7 deletions
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8
drivers/media/platform/vivid/vivid-tpg.c
View File

@ -1241,8 +1241,8 @@ static void tpg_precalculate_line(struct tpg_data *tpg)
/* need this to do rgb24 rendering */
typedef struct { u16 __; u8 _; } __packed x24;
void tpg_gen_text(struct tpg_data *tpg, u8 *basep[TPG_MAX_PLANES][2],
int y, int x, char *text)
void tpg_gen_text(const struct tpg_data *tpg, u8 *basep[TPG_MAX_PLANES][2],
int y, int x, char *text)
{
int line;
unsigned step = V4L2_FIELD_HAS_T_OR_B(tpg->field) ? 2 : 1;
@ -1389,7 +1389,7 @@ void tpg_update_mv_step(struct tpg_data *tpg)
}
/* Map the line number relative to the crop rectangle to a frame line number */
static unsigned tpg_calc_frameline(struct tpg_data *tpg, unsigned src_y,
static unsigned tpg_calc_frameline(const struct tpg_data *tpg, unsigned src_y,
unsigned field)
{
switch (field) {
@ -1406,7 +1406,7 @@ static unsigned tpg_calc_frameline(struct tpg_data *tpg, unsigned src_y,
* Map the line number relative to the compose rectangle to a destination
* buffer line number.
*/
static unsigned tpg_calc_buffer_line(struct tpg_data *tpg, unsigned y,
static unsigned tpg_calc_buffer_line(const struct tpg_data *tpg, unsigned y,
unsigned field)
{
y += tpg->compose.top;

8
drivers/media/platform/vivid/vivid-tpg.h
View File

@ -193,12 +193,14 @@ void tpg_reset_source(struct tpg_data *tpg, unsigned width, unsigned height,
u32 field);
void tpg_set_font(const u8 *f);
void tpg_gen_text(struct tpg_data *tpg,
void tpg_gen_text(const struct tpg_data *tpg,
u8 *basep[TPG_MAX_PLANES][2], int y, int x, char *text);
void tpg_calc_text_basep(struct tpg_data *tpg,
u8 *basep[TPG_MAX_PLANES][2], unsigned p, u8 *vbuf);
void tpg_fill_plane_buffer(struct tpg_data *tpg, v4l2_std_id std, unsigned p, u8 *vbuf);
void tpg_fillbuffer(struct tpg_data *tpg, v4l2_std_id std, unsigned p, u8 *vbuf);
void tpg_fill_plane_buffer(struct tpg_data *tpg, v4l2_std_id std,
unsigned p, u8 *vbuf);
void tpg_fillbuffer(struct tpg_data *tpg, v4l2_std_id std,
unsigned p, u8 *vbuf);
bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc);
void tpg_s_crop_compose(struct tpg_data *tpg, const struct v4l2_rect *crop,
const struct v4l2_rect *compose);