drm/dsc: Define VESA Display Stream Compression Capabilities
This defines all the DSC parameters as per the VESA DSC spec that will be required for DSC encoder/decoder v6: (From Manasi) * Add a bit mask for RANGE_BPG_OFFSET for 6 bits(Manasi) v5 (From Manasi) * Add the RC constants as per the spec v4 (From Manasi) * Add the DSC_MUX_WORD_SIZE constants (Manasi) v3 (From Manasi) * Remove the duplicate define (Suggested By:Harry Wentland) v2: Define this struct in DRM (From Manasi) * Changed the data types to u8/u16 instead of unsigned longs (Manasi) * Remove driver specific fields (Manasi) * Move this struct definition to DRM (Manasi) * Define DSC 1.2 parameters (Manasi) * Use DSC_NUM_BUF_RANGES (Manasi) * Call it drm_dsc_config (Manasi) Cc: dri-devel@lists.freedesktop.org Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Cc: Anusha Srivatsa <anusha.srivatsa@intel.com> Cc: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Manasi Navare <manasi.d.navare@intel.com> Signed-off-by: Gaurav K Singh <gaurav.k.singh@intel.com> Co-developed-by: Gaurav K Singh <gaurav.k.singh@intel.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Acked-by: Sean Paul <seanpaul@chromium.org> (For merging through drm-intel) Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181127214125.17658-3-manasi.d.navare@intel.com
This commit is contained in:
Manasi Navare
parent
7c247c0675
commit
19fd5adbb5
|
|
@ -11,7 +11,120 @@
|
|||
#include <drm/drm_dp_helper.h>
|
||||
|
||||
/* VESA Display Stream Compression DSC 1.2 constants */
|
||||
#define DSC_NUM_BUF_RANGES 15
|
||||
#define DSC_NUM_BUF_RANGES 15
|
||||
#define DSC_MUX_WORD_SIZE_8_10_BPC 48
|
||||
#define DSC_MUX_WORD_SIZE_12_BPC 64
|
||||
#define DSC_RC_PIXELS_PER_GROUP 3
|
||||
#define DSC_SCALE_DECREMENT_INTERVAL_MAX 4095
|
||||
#define DSC_RANGE_BPG_OFFSET_MASK 0x3f
|
||||
|
||||
/* Configuration for a single Rate Control model range */
|
||||
struct drm_dsc_rc_range_parameters {
|
||||
/* Min Quantization Parameters allowed for this range */
|
||||
u8 range_min_qp;
|
||||
/* Max Quantization Parameters allowed for this range */
|
||||
u8 range_max_qp;
|
||||
/* Bits/group offset to apply to target for this group */
|
||||
u8 range_bpg_offset;
|
||||
};
|
||||
|
||||
struct drm_dsc_config {
|
||||
/* Bits / component for previous reconstructed line buffer */
|
||||
u8 line_buf_depth;
|
||||
/* Bits per component to code (must be 8, 10, or 12) */
|
||||
u8 bits_per_component;
|
||||
/*
|
||||
* Flag indicating to do RGB - YCoCg conversion
|
||||
* and back (should be 1 for RGB input)
|
||||
*/
|
||||
bool convert_rgb;
|
||||
u8 slice_count;
|
||||
/* Slice Width */
|
||||
u16 slice_width;
|
||||
/* Slice Height */
|
||||
u16 slice_height;
|
||||
/*
|
||||
* 4:2:2 enable mode (from PPS, 4:2:2 conversion happens
|
||||
* outside of DSC encode/decode algorithm)
|
||||
*/
|
||||
bool enable422;
|
||||
/* Picture Width */
|
||||
u16 pic_width;
|
||||
/* Picture Height */
|
||||
u16 pic_height;
|
||||
/* Offset to bits/group used by RC to determine QP adjustment */
|
||||
u8 rc_tgt_offset_high;
|
||||
/* Offset to bits/group used by RC to determine QP adjustment */
|
||||
u8 rc_tgt_offset_low;
|
||||
/* Bits/pixel target << 4 (ie., 4 fractional bits) */
|
||||
u16 bits_per_pixel;
|
||||
/*
|
||||
* Factor to determine if an edge is present based
|
||||
* on the bits produced
|
||||
*/
|
||||
u8 rc_edge_factor;
|
||||
/* Slow down incrementing once the range reaches this value */
|
||||
u8 rc_quant_incr_limit1;
|
||||
/* Slow down incrementing once the range reaches this value */
|
||||
u8 rc_quant_incr_limit0;
|
||||
/* Number of pixels to delay the initial transmission */
|
||||
u16 initial_xmit_delay;
|
||||
/* Number of pixels to delay the VLD on the decoder,not including SSM */
|
||||
u16 initial_dec_delay;
|
||||
/* Block prediction enable */
|
||||
bool block_pred_enable;
|
||||
/* Bits/group offset to use for first line of the slice */
|
||||
u8 first_line_bpg_offset;
|
||||
/* Value to use for RC model offset at slice start */
|
||||
u16 initial_offset;
|
||||
/* Thresholds defining each of the buffer ranges */
|
||||
u16 rc_buf_thresh[DSC_NUM_BUF_RANGES - 1];
|
||||
/* Parameters for each of the RC ranges */
|
||||
struct drm_dsc_rc_range_parameters rc_range_params[DSC_NUM_BUF_RANGES];
|
||||
/* Total size of RC model */
|
||||
u16 rc_model_size;
|
||||
/* Minimum QP where flatness information is sent */
|
||||
u8 flatness_min_qp;
|
||||
/* Maximum QP where flatness information is sent */
|
||||
u8 flatness_max_qp;
|
||||
/* Initial value for scale factor */
|
||||
u8 initial_scale_value;
|
||||
/* Decrement scale factor every scale_decrement_interval groups */
|
||||
u16 scale_decrement_interval;
|
||||
/* Increment scale factor every scale_increment_interval groups */
|
||||
u16 scale_increment_interval;
|
||||
/* Non-first line BPG offset to use */
|
||||
u16 nfl_bpg_offset;
|
||||
/* BPG offset used to enforce slice bit */
|
||||
u16 slice_bpg_offset;
|
||||
/* Final RC linear transformation offset value */
|
||||
u16 final_offset;
|
||||
/* Enable on-off VBR (ie., disable stuffing bits) */
|
||||
bool vbr_enable;
|
||||
/* Mux word size (in bits) for SSM mode */
|
||||
u8 mux_word_size;
|
||||
/*
|
||||
* The (max) size in bytes of the "chunks" that are
|
||||
* used in slice multiplexing
|
||||
*/
|
||||
u16 slice_chunk_size;
|
||||
/* Rate Control buffer siz in bits */
|
||||
u16 rc_bits;
|
||||
/* DSC Minor Version */
|
||||
u8 dsc_version_minor;
|
||||
/* DSC Major version */
|
||||
u8 dsc_version_major;
|
||||
/* Native 4:2:2 support */
|
||||
bool native_422;
|
||||
/* Native 4:2:0 support */
|
||||
bool native_420;
|
||||
/* Additional bits/grp for seconnd line of slice for native 4:2:0 */
|
||||
u8 second_line_bpg_offset;
|
||||
/* Num of bits deallocated for each grp that is not in second line of slice */
|
||||
u16 nsl_bpg_offset;
|
||||
/* Offset adj fr second line in Native 4:2:0 mode */
|
||||
u16 second_line_offset_adj;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct picture_parameter_set - Represents 128 bytes of Picture Parameter Set
|
||||
|
|
|
|||
Loading…
Reference in New Issue