diff options
Diffstat (limited to 'drivers/media/platform/allegro-dvt/nal-h264.h')
| -rw-r--r-- | drivers/media/platform/allegro-dvt/nal-h264.h | 200 |
1 files changed, 198 insertions, 2 deletions
diff --git a/drivers/media/platform/allegro-dvt/nal-h264.h b/drivers/media/platform/allegro-dvt/nal-h264.h index a19634fe8c0b..34db07cda652 100644 --- a/drivers/media/platform/allegro-dvt/nal-h264.h +++ b/drivers/media/platform/allegro-dvt/nal-h264.h @@ -8,8 +8,11 @@ #ifndef __NAL_H264_H__ #define __NAL_H264_H__ +#include <linux/errno.h> #include <linux/kernel.h> #include <linux/types.h> +#include <linux/v4l2-controls.h> +#include <linux/videodev2.h> /* * struct nal_h264_hrd_parameters - HRD parameters @@ -187,8 +190,201 @@ struct nal_h264_pps { }; }; -int nal_h264_profile_from_v4l2(enum v4l2_mpeg_video_h264_profile profile); -int nal_h264_level_from_v4l2(enum v4l2_mpeg_video_h264_level level); +/** + * nal_h264_profile() - Get profile_idc for v4l2 h264 profile + * @profile: the profile as &enum v4l2_mpeg_video_h264_profile + * + * Convert the &enum v4l2_mpeg_video_h264_profile to profile_idc as specified + * in Rec. ITU-T H.264 (04/2017) A.2. + * + * Return: the profile_idc for the passed level + */ +static inline int nal_h264_profile(enum v4l2_mpeg_video_h264_profile profile) +{ + switch (profile) { + case V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE: + return 66; + case V4L2_MPEG_VIDEO_H264_PROFILE_MAIN: + return 77; + case V4L2_MPEG_VIDEO_H264_PROFILE_EXTENDED: + return 88; + case V4L2_MPEG_VIDEO_H264_PROFILE_HIGH: + return 100; + default: + return -EINVAL; + } +} + +/** + * nal_h264_level() - Get level_idc for v4l2 h264 level + * @level: the level as &enum v4l2_mpeg_video_h264_level + * + * Convert the &enum v4l2_mpeg_video_h264_level to level_idc as specified in + * Rec. ITU-T H.264 (04/2017) A.3.2. + * + * Return: the level_idc for the passed level + */ +static inline int nal_h264_level(enum v4l2_mpeg_video_h264_level level) +{ + switch (level) { + case V4L2_MPEG_VIDEO_H264_LEVEL_1_0: + return 10; + case V4L2_MPEG_VIDEO_H264_LEVEL_1B: + return 9; + case V4L2_MPEG_VIDEO_H264_LEVEL_1_1: + return 11; + case V4L2_MPEG_VIDEO_H264_LEVEL_1_2: + return 12; + case V4L2_MPEG_VIDEO_H264_LEVEL_1_3: + return 13; + case V4L2_MPEG_VIDEO_H264_LEVEL_2_0: + return 20; + case V4L2_MPEG_VIDEO_H264_LEVEL_2_1: + return 21; + case V4L2_MPEG_VIDEO_H264_LEVEL_2_2: + return 22; + case V4L2_MPEG_VIDEO_H264_LEVEL_3_0: + return 30; + case V4L2_MPEG_VIDEO_H264_LEVEL_3_1: + return 31; + case V4L2_MPEG_VIDEO_H264_LEVEL_3_2: + return 32; + case V4L2_MPEG_VIDEO_H264_LEVEL_4_0: + return 40; + case V4L2_MPEG_VIDEO_H264_LEVEL_4_1: + return 41; + case V4L2_MPEG_VIDEO_H264_LEVEL_4_2: + return 42; + case V4L2_MPEG_VIDEO_H264_LEVEL_5_0: + return 50; + case V4L2_MPEG_VIDEO_H264_LEVEL_5_1: + return 51; + default: + return -EINVAL; + } +} + +/** + * nal_h264_full_range() - Get video_full_range_flag for v4l2 quantization + * @quantization: the quantization type as &enum v4l2_quantization + * + * Convert the &enum v4l2_quantization to video_full_range_flag as specified in + * Rec. ITU-T H.264 (04/2017) E.2.1. + * + * Return: the video_full_range_flag value for the passed quantization + */ +static inline int nal_h264_full_range(enum v4l2_quantization quantization) +{ + switch (quantization) { + case V4L2_QUANTIZATION_FULL_RANGE: + return 1; + case V4L2_QUANTIZATION_LIM_RANGE: + return 0; + default: + break; + } + + return 0; +} + +/** + * nal_h264_color_primaries() - Get color_primaries for v4l2 colorspace + * @colorspace: the color space as &enum v4l2_colorspace + * + * Convert the &enum v4l2_colorspace to color_primaries as specified in + * Rec. ITU-T H.264 (04/2017) E.2.1. + * + * Return: the color_primaries value for the passed colorspace + */ +static inline int nal_h264_color_primaries(enum v4l2_colorspace colorspace) +{ + switch (colorspace) { + case V4L2_COLORSPACE_SMPTE170M: + return 6; + case V4L2_COLORSPACE_SMPTE240M: + return 7; + case V4L2_COLORSPACE_REC709: + return 1; + case V4L2_COLORSPACE_470_SYSTEM_M: + return 4; + case V4L2_COLORSPACE_JPEG: + case V4L2_COLORSPACE_SRGB: + case V4L2_COLORSPACE_470_SYSTEM_BG: + return 5; + case V4L2_COLORSPACE_BT2020: + return 9; + case V4L2_COLORSPACE_DEFAULT: + case V4L2_COLORSPACE_OPRGB: + case V4L2_COLORSPACE_RAW: + case V4L2_COLORSPACE_DCI_P3: + default: + return 2; + } +} + +/** + * nal_h264_transfer_characteristics() - Get transfer_characteristics for v4l2 xfer_func + * @colorspace: the color space as &enum v4l2_colorspace + * @xfer_func: the transfer function as &enum v4l2_xfer_func + * + * Convert the &enum v4l2_xfer_func to transfer_characteristics as specified in + * Rec. ITU-T H.264 (04/2017) E.2.1. + * + * Return: the transfer_characteristics value for the passed transfer function + */ +static inline int nal_h264_transfer_characteristics(enum v4l2_colorspace colorspace, + enum v4l2_xfer_func xfer_func) +{ + if (xfer_func == V4L2_XFER_FUNC_DEFAULT) + xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(colorspace); + + switch (xfer_func) { + case V4L2_XFER_FUNC_709: + return 6; + case V4L2_XFER_FUNC_SMPTE2084: + return 16; + case V4L2_XFER_FUNC_SRGB: + case V4L2_XFER_FUNC_OPRGB: + case V4L2_XFER_FUNC_NONE: + case V4L2_XFER_FUNC_DCI_P3: + case V4L2_XFER_FUNC_SMPTE240M: + default: + return 2; + } +} + +/** + * nal_h264_matrix_coeffs() - Get matrix_coefficients for v4l2 v4l2_ycbcr_encoding + * @colorspace: the color space as &enum v4l2_colorspace + * @ycbcr_encoding: the ycbcr encoding as &enum v4l2_ycbcr_encoding + * + * Convert the &enum v4l2_ycbcr_encoding to matrix_coefficients as specified in + * Rec. ITU-T H.264 (04/2017) E.2.1. + * + * Return: the matrix_coefficients value for the passed encoding + */ +static inline int nal_h264_matrix_coeffs(enum v4l2_colorspace colorspace, + enum v4l2_ycbcr_encoding ycbcr_encoding) +{ + if (ycbcr_encoding == V4L2_YCBCR_ENC_DEFAULT) + ycbcr_encoding = V4L2_MAP_YCBCR_ENC_DEFAULT(colorspace); + + switch (ycbcr_encoding) { + case V4L2_YCBCR_ENC_601: + case V4L2_YCBCR_ENC_XV601: + return 5; + case V4L2_YCBCR_ENC_709: + case V4L2_YCBCR_ENC_XV709: + return 1; + case V4L2_YCBCR_ENC_BT2020: + return 9; + case V4L2_YCBCR_ENC_BT2020_CONST_LUM: + return 10; + case V4L2_YCBCR_ENC_SMPTE240M: + default: + return 2; + } +} ssize_t nal_h264_write_sps(const struct device *dev, void *dest, size_t n, struct nal_h264_sps *sps); |