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media: tpg: Add function to return colors' order of test image
Currently there is no method to know the correct order of the colors for a test image generated by tpg. Write a function that returns a string of colors' order given a tpg. It returns a NULL pointer in case of test patterns which do not have a well defined colors' order. Hence add a NULL check for text in tpg_gen_text(). [hverkuil: white -> White (for consistency)] Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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@ -1959,12 +1959,14 @@ void tpg_gen_text(const struct tpg_data *tpg, u8 *basep[TPG_MAX_PLANES][2],
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unsigned step = V4L2_FIELD_HAS_T_OR_B(tpg->field) ? 2 : 1;
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unsigned step = V4L2_FIELD_HAS_T_OR_B(tpg->field) ? 2 : 1;
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unsigned div = step;
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unsigned div = step;
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unsigned first = 0;
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unsigned first = 0;
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unsigned len = strlen(text);
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unsigned len;
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unsigned p;
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unsigned p;
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if (font8x16 == NULL || basep == NULL)
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if (font8x16 == NULL || basep == NULL || text == NULL)
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return;
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return;
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len = strlen(text);
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/* Checks if it is possible to show string */
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/* Checks if it is possible to show string */
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if (y + 16 >= tpg->compose.height || x + 8 >= tpg->compose.width)
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if (y + 16 >= tpg->compose.height || x + 8 >= tpg->compose.width)
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return;
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return;
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@ -2006,6 +2008,30 @@ void tpg_gen_text(const struct tpg_data *tpg, u8 *basep[TPG_MAX_PLANES][2],
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}
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}
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EXPORT_SYMBOL_GPL(tpg_gen_text);
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EXPORT_SYMBOL_GPL(tpg_gen_text);
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const char *tpg_g_color_order(const struct tpg_data *tpg)
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{
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switch (tpg->pattern) {
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case TPG_PAT_75_COLORBAR:
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case TPG_PAT_100_COLORBAR:
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case TPG_PAT_CSC_COLORBAR:
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case TPG_PAT_100_HCOLORBAR:
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return "White, yellow, cyan, green, magenta, red, blue, black";
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case TPG_PAT_BLACK:
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return "Black";
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case TPG_PAT_WHITE:
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return "White";
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case TPG_PAT_RED:
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return "Red";
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case TPG_PAT_GREEN:
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return "Green";
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case TPG_PAT_BLUE:
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return "Blue";
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default:
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return NULL;
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}
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}
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EXPORT_SYMBOL_GPL(tpg_g_color_order);
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void tpg_update_mv_step(struct tpg_data *tpg)
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void tpg_update_mv_step(struct tpg_data *tpg)
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{
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{
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int factor = tpg->mv_hor_mode > TPG_MOVE_NONE ? -1 : 1;
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int factor = tpg->mv_hor_mode > TPG_MOVE_NONE ? -1 : 1;
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@ -252,6 +252,7 @@ void tpg_fillbuffer(struct tpg_data *tpg, v4l2_std_id std,
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bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc);
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bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc);
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void tpg_s_crop_compose(struct tpg_data *tpg, const struct v4l2_rect *crop,
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void tpg_s_crop_compose(struct tpg_data *tpg, const struct v4l2_rect *crop,
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const struct v4l2_rect *compose);
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const struct v4l2_rect *compose);
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const char *tpg_g_color_order(const struct tpg_data *tpg);
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static inline void tpg_s_pattern(struct tpg_data *tpg, enum tpg_pattern pattern)
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static inline void tpg_s_pattern(struct tpg_data *tpg, enum tpg_pattern pattern)
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{
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{
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