diff options
Diffstat (limited to 'include/media/v4l2-common.h')
| -rw-r--r-- | include/media/v4l2-common.h | 77 |
1 files changed, 62 insertions, 15 deletions
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h index 63ad36f04f72..0a43f56578bc 100644 --- a/include/media/v4l2-common.h +++ b/include/media/v4l2-common.h @@ -390,38 +390,72 @@ void v4l_bound_align_image(unsigned int *width, unsigned int wmin, unsigned int salign); /** - * v4l2_find_nearest_size - Find the nearest size among a discrete - * set of resolutions contained in an array of a driver specific struct. + * v4l2_find_nearest_size_conditional - Find the nearest size among a discrete + * set of resolutions contained in an array of a driver specific struct, + * with conditionally exlusion of certain modes * * @array: a driver specific array of image sizes * @array_size: the length of the driver specific array of image sizes * @width_field: the name of the width field in the driver specific struct * @height_field: the name of the height field in the driver specific struct - * @width: desired width. - * @height: desired height. + * @width: desired width + * @height: desired height + * @func: ignores mode if returns false + * @context: context for the function * * Finds the closest resolution to minimize the width and height differences * between what requested and the supported resolutions. The size of the width * and height fields in the driver specific must equal to that of u32, i.e. four - * bytes. + * bytes. @func is called for each mode considered, a mode is ignored if @func + * returns false for it. * * Returns the best match or NULL if the length of the array is zero. */ -#define v4l2_find_nearest_size(array, array_size, width_field, height_field, \ - width, height) \ +#define v4l2_find_nearest_size_conditional(array, array_size, width_field, \ + height_field, width, height, \ + func, context) \ ({ \ BUILD_BUG_ON(sizeof((array)->width_field) != sizeof(u32) || \ sizeof((array)->height_field) != sizeof(u32)); \ - (typeof(&(array)[0]))__v4l2_find_nearest_size( \ + (typeof(&(array)[0]))__v4l2_find_nearest_size_conditional( \ (array), array_size, sizeof(*(array)), \ offsetof(typeof(*(array)), width_field), \ offsetof(typeof(*(array)), height_field), \ - width, height); \ + width, height, func, context); \ }) const void * -__v4l2_find_nearest_size(const void *array, size_t array_size, - size_t entry_size, size_t width_offset, - size_t height_offset, s32 width, s32 height); +__v4l2_find_nearest_size_conditional(const void *array, size_t array_size, + size_t entry_size, size_t width_offset, + size_t height_offset, s32 width, + s32 height, + bool (*func)(const void *array, + size_t index, + const void *context), + const void *context); + +/** + * v4l2_find_nearest_size - Find the nearest size among a discrete set of + * resolutions contained in an array of a driver specific struct + * + * @array: a driver specific array of image sizes + * @array_size: the length of the driver specific array of image sizes + * @width_field: the name of the width field in the driver specific struct + * @height_field: the name of the height field in the driver specific struct + * @width: desired width + * @height: desired height + * + * Finds the closest resolution to minimize the width and height differences + * between what requested and the supported resolutions. The size of the width + * and height fields in the driver specific must equal to that of u32, i.e. four + * bytes. + * + * Returns the best match or NULL if the length of the array is zero. + */ +#define v4l2_find_nearest_size(array, array_size, width_field, \ + height_field, width, height) \ + v4l2_find_nearest_size_conditional(array, array_size, width_field, \ + height_field, width, height, NULL, \ + NULL) /** * v4l2_g_parm_cap - helper routine for vidioc_g_parm to fill this in by @@ -525,7 +559,8 @@ int v4l2_fill_pixfmt_mp(struct v4l2_pix_format_mplane *pixfmt, u32 pixelformat, /** * v4l2_get_link_freq - Get link rate from transmitter * - * @handler: The transmitter's control handler + * @pad: The transmitter's media pad (or control handler for non-MC users or + * compatibility reasons, don't use in new code) * @mul: The multiplier between pixel rate and link frequency. Bits per pixel on * D-PHY, samples per clock on parallel. 0 otherwise. * @div: The divisor between pixel rate and link frequency. Number of data lanes @@ -541,8 +576,20 @@ int v4l2_fill_pixfmt_mp(struct v4l2_pix_format_mplane *pixfmt, u32 pixelformat, * * %-ENOENT: Link frequency or pixel rate control not found * * %-EINVAL: Invalid link frequency value */ -s64 v4l2_get_link_freq(struct v4l2_ctrl_handler *handler, unsigned int mul, - unsigned int div); +#ifdef CONFIG_MEDIA_CONTROLLER +#define v4l2_get_link_freq(pad, mul, div) \ + _Generic(pad, \ + struct media_pad *: __v4l2_get_link_freq_pad, \ + struct v4l2_ctrl_handler *: __v4l2_get_link_freq_ctrl) \ + (pad, mul, div) +s64 __v4l2_get_link_freq_pad(struct media_pad *pad, unsigned int mul, + unsigned int div); +#else +#define v4l2_get_link_freq(handler, mul, div) \ + __v4l2_get_link_freq_ctrl(handler, mul, div) +#endif +s64 __v4l2_get_link_freq_ctrl(struct v4l2_ctrl_handler *handler, + unsigned int mul, unsigned int div); void v4l2_simplify_fraction(u32 *numerator, u32 *denominator, unsigned int n_terms, unsigned int threshold); |