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mpv/video/repack.c
Philip Langdale 98f02e33ef repack: add repacker for ccc16x16 formats 
I'm adding support in ffmpeg for the XV36 format which will be used
by VAAPI for 12bit 4:4:4 content. It's an undefined-alpha channel
variant of Y412 which is itself a 12bit+4bits padding variant of Y416.

We currently have a repacker for full four channel cccc16, and for
three channel ccc16, but nothing for ccc16x16 with the undefined alpha
channel.

It's simple enough to add one using the existing macros.
2022-09-10 12:31:44 -07:00

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/*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <math.h>
#include <libavutil/bswap.h>
#include <libavutil/pixfmt.h>
#include "common/common.h"
#include "repack.h"
#include "video/csputils.h"
#include "video/fmt-conversion.h"
#include "video/img_format.h"
#include "video/mp_image.h"
enum repack_step_type {
REPACK_STEP_FLOAT,
REPACK_STEP_REPACK,
REPACK_STEP_ENDIAN,
};
struct repack_step {
enum repack_step_type type;
// 0=input, 1=output
struct mp_image *buf[2];
bool user_buf[2]; // user_buf[n]==true if buf[n] = user src/dst buffer
struct mp_imgfmt_desc fmt[2];
struct mp_image *tmp; // output buffer, if needed
};
struct mp_repack {
bool pack; // if false, this is for unpacking
int flags;
int imgfmt_user; // original mp format (unchanged endian)
int imgfmt_a; // original mp format (possibly packed format,
// swapped endian)
int imgfmt_b; // equivalent unpacked/planar format
struct mp_imgfmt_desc fmt_a;// ==imgfmt_a
struct mp_imgfmt_desc fmt_b;// ==imgfmt_b
void (*repack)(struct mp_repack *rp,
struct mp_image *a, int a_x, int a_y,
struct mp_image *b, int b_x, int b_y, int w);
bool passthrough_y; // possible luma plane optimization for e.g. nv12
int endian_size; // endian swap; 0=none, 2/4=swap word size
// For packed_repack.
int components[4]; // b[n] = mp_image.planes[components[n]]
// pack: a is dst, b is src
// unpack: a is src, b is dst
void (*packed_repack_scanline)(void *a, void *b[], int w);
// Fringe RGB/YUV.
uint8_t comp_size;
uint8_t comp_map[6];
uint8_t comp_shifts[3];
uint8_t *comp_lut;
void (*repack_fringe_yuv)(void *dst, void *src[], int w, uint8_t *c);
// F32 repacking.
int f32_comp_size;
float f32_m[4], f32_o[4];
uint32_t f32_pmax[4];
enum mp_csp f32_csp_space;
enum mp_csp_levels f32_csp_levels;
// REPACK_STEP_REPACK: if true, need to copy this plane
bool copy_buf[4];
struct repack_step steps[4];
int num_steps;
bool configured;
};
// depth = number of LSB in use
static int find_gbrp_format(int depth, int num_planes)
{
if (num_planes != 3 && num_planes != 4)
return 0;
struct mp_regular_imgfmt desc = {
.component_type = MP_COMPONENT_TYPE_UINT,
.forced_csp = MP_CSP_RGB,
.component_size = depth > 8 ? 2 : 1,
.component_pad = depth - (depth > 8 ? 16 : 8),
.num_planes = num_planes,
.planes = { {1, {2}}, {1, {3}}, {1, {1}}, {1, {4}} },
};
return mp_find_regular_imgfmt(&desc);
}
// depth = number of LSB in use
static int find_yuv_format(int depth, int num_planes)
{
if (num_planes < 1 || num_planes > 4)
return 0;
struct mp_regular_imgfmt desc = {
.component_type = MP_COMPONENT_TYPE_UINT,
.component_size = depth > 8 ? 2 : 1,
.component_pad = depth - (depth > 8 ? 16 : 8),
.num_planes = num_planes,
.planes = { {1, {1}}, {1, {2}}, {1, {3}}, {1, {4}} },
};
if (num_planes == 2)
desc.planes[1].components[0] = 4;
return mp_find_regular_imgfmt(&desc);
}
// Copy one line on the plane p.
static void copy_plane(struct mp_image *dst, int dst_x, int dst_y,
struct mp_image *src, int src_x, int src_y,
int w, int p)
{
// Number of lines on this plane.
int h = (1 << dst->fmt.chroma_ys) - (1 << dst->fmt.ys[p]) + 1;
size_t size = mp_image_plane_bytes(dst, p, dst_x, w);
assert(dst->fmt.bpp[p] == src->fmt.bpp[p]);
for (int y = 0; y < h; y++) {
void *pd = mp_image_pixel_ptr_ny(dst, p, dst_x, dst_y + y);
void *ps = mp_image_pixel_ptr_ny(src, p, src_x, src_y + y);
memcpy(pd, ps, size);
}
}
// Swap endian for one line.
static void swap_endian(struct mp_image *dst, int dst_x, int dst_y,
struct mp_image *src, int src_x, int src_y,
int w, int endian_size)
{
assert(src->fmt.num_planes == dst->fmt.num_planes);
for (int p = 0; p < dst->fmt.num_planes; p++) {
int xs = dst->fmt.xs[p];
int bpp = dst->fmt.bpp[p] / 8;
int words_per_pixel = bpp / endian_size;
int num_words = ((w + (1 << xs) - 1) >> xs) * words_per_pixel;
// Number of lines on this plane.
int h = (1 << dst->fmt.chroma_ys) - (1 << dst->fmt.ys[p]) + 1;
assert(src->fmt.bpp[p] == bpp * 8);
for (int y = 0; y < h; y++) {
void *s = mp_image_pixel_ptr_ny(src, p, src_x, src_y + y);
void *d = mp_image_pixel_ptr_ny(dst, p, dst_x, dst_y + y);
switch (endian_size) {
case 2:
for (int x = 0; x < num_words; x++)
((uint16_t *)d)[x] = av_bswap16(((uint16_t *)s)[x]);
break;
case 4:
for (int x = 0; x < num_words; x++)
((uint32_t *)d)[x] = av_bswap32(((uint32_t *)s)[x]);
break;
default:
MP_ASSERT_UNREACHABLE();
}
}
}
}
// PA = PAck, copy planar input to single packed array
// UN = UNpack, copy packed input to planar output
// Naming convention:
// pa_/un_ prefix to identify conversion direction.
// Left (LSB, lowest byte address) -> Right (MSB, highest byte address).
// (This is unusual; MSB to LSB is more commonly used to describe formats,
// but our convention makes more sense for byte access in little endian.)
// "c" identifies a color component.
// "z" identifies known zero padding.
// "x" identifies uninitialized padding.
// A component is followed by its size in bits.
// Size can be omitted for multiple uniform components (c8c8c8 == ccc8).
// Unpackers will often use "x" for padding, because they ignore it, while
// packers will use "z" because they write zero.
#define PA_WORD_4(name, packed_t, plane_t, sh_c0, sh_c1, sh_c2, sh_c3) \
static void name(void *dst, void *src[], int w) { \
for (int x = 0; x < w; x++) { \
((packed_t *)dst)[x] = \
((packed_t)((plane_t *)src[0])[x] << (sh_c0)) | \
((packed_t)((plane_t *)src[1])[x] << (sh_c1)) | \
((packed_t)((plane_t *)src[2])[x] << (sh_c2)) | \
((packed_t)((plane_t *)src[3])[x] << (sh_c3)); \
} \
}
#define UN_WORD_4(name, packed_t, plane_t, sh_c0, sh_c1, sh_c2, sh_c3, mask)\
static void name(void *src, void *dst[], int w) { \
for (int x = 0; x < w; x++) { \
packed_t c = ((packed_t *)src)[x]; \
((plane_t *)dst[0])[x] = (c >> (sh_c0)) & (mask); \
((plane_t *)dst[1])[x] = (c >> (sh_c1)) & (mask); \
((plane_t *)dst[2])[x] = (c >> (sh_c2)) & (mask); \
((plane_t *)dst[3])[x] = (c >> (sh_c3)) & (mask); \
} \
}
#define PA_WORD_3(name, packed_t, plane_t, sh_c0, sh_c1, sh_c2, pad) \
static void name(void *dst, void *src[], int w) { \
for (int x = 0; x < w; x++) { \
((packed_t *)dst)[x] = (pad) | \
((packed_t)((plane_t *)src[0])[x] << (sh_c0)) | \
((packed_t)((plane_t *)src[1])[x] << (sh_c1)) | \
((packed_t)((plane_t *)src[2])[x] << (sh_c2)); \
} \
}
UN_WORD_4(un_cccc8, uint32_t, uint8_t, 0, 8, 16, 24, 0xFFu)
PA_WORD_4(pa_cccc8, uint32_t, uint8_t, 0, 8, 16, 24)
// Not sure if this is a good idea; there may be no alignment guarantee.
UN_WORD_4(un_cccc16, uint64_t, uint16_t, 0, 16, 32, 48, 0xFFFFu)
PA_WORD_4(pa_cccc16, uint64_t, uint16_t, 0, 16, 32, 48)
#define UN_WORD_3(name, packed_t, plane_t, sh_c0, sh_c1, sh_c2, mask) \
static void name(void *src, void *dst[], int w) { \
for (int x = 0; x < w; x++) { \
packed_t c = ((packed_t *)src)[x]; \
((plane_t *)dst[0])[x] = (c >> (sh_c0)) & (mask); \
((plane_t *)dst[1])[x] = (c >> (sh_c1)) & (mask); \
((plane_t *)dst[2])[x] = (c >> (sh_c2)) & (mask); \
} \
}
UN_WORD_3(un_ccc8x8, uint32_t, uint8_t, 0, 8, 16, 0xFFu)
PA_WORD_3(pa_ccc8z8, uint32_t, uint8_t, 0, 8, 16, 0)
UN_WORD_3(un_x8ccc8, uint32_t, uint8_t, 8, 16, 24, 0xFFu)
PA_WORD_3(pa_z8ccc8, uint32_t, uint8_t, 8, 16, 24, 0)
UN_WORD_3(un_ccc10x2, uint32_t, uint16_t, 0, 10, 20, 0x3FFu)
PA_WORD_3(pa_ccc10z2, uint32_t, uint16_t, 0, 10, 20, 0)
UN_WORD_3(un_ccc16x16, uint64_t, uint16_t, 0, 16, 32, 0xFFFFu)
PA_WORD_3(pa_ccc16z16, uint64_t, uint16_t, 0, 16, 32, 0)
#define PA_WORD_2(name, packed_t, plane_t, sh_c0, sh_c1, pad) \
static void name(void *dst, void *src[], int w) { \
for (int x = 0; x < w; x++) { \
((packed_t *)dst)[x] = (pad) | \
((packed_t)((plane_t *)src[0])[x] << (sh_c0)) | \
((packed_t)((plane_t *)src[1])[x] << (sh_c1)); \
} \
}
#define UN_WORD_2(name, packed_t, plane_t, sh_c0, sh_c1, mask) \
static void name(void *src, void *dst[], int w) { \
for (int x = 0; x < w; x++) { \
packed_t c = ((packed_t *)src)[x]; \
((plane_t *)dst[0])[x] = (c >> (sh_c0)) & (mask); \
((plane_t *)dst[1])[x] = (c >> (sh_c1)) & (mask); \
} \
}
UN_WORD_2(un_cc8, uint16_t, uint8_t, 0, 8, 0xFFu)
PA_WORD_2(pa_cc8, uint16_t, uint8_t, 0, 8, 0)
UN_WORD_2(un_cc16, uint32_t, uint16_t, 0, 16, 0xFFFFu)
PA_WORD_2(pa_cc16, uint32_t, uint16_t, 0, 16, 0)
#define PA_SEQ_3(name, comp_t) \
static void name(void *dst, void *src[], int w) { \
comp_t *r = dst; \
for (int x = 0; x < w; x++) { \
*r++ = ((comp_t *)src[0])[x]; \
*r++ = ((comp_t *)src[1])[x]; \
*r++ = ((comp_t *)src[2])[x]; \
} \
}
#define UN_SEQ_3(name, comp_t) \
static void name(void *src, void *dst[], int w) { \
comp_t *r = src; \
for (int x = 0; x < w; x++) { \
((comp_t *)dst[0])[x] = *r++; \
((comp_t *)dst[1])[x] = *r++; \
((comp_t *)dst[2])[x] = *r++; \
} \
}
UN_SEQ_3(un_ccc8, uint8_t)
PA_SEQ_3(pa_ccc8, uint8_t)
UN_SEQ_3(un_ccc16, uint16_t)
PA_SEQ_3(pa_ccc16, uint16_t)
// "regular": single packed plane, all components have same width (except padding)
struct regular_repacker {
int packed_width; // number of bits of the packed pixel
int component_width; // number of bits for a single component
int prepadding; // number of bits of LSB padding
int num_components; // number of components that can be accessed
void (*pa_scanline)(void *a, void *b[], int w);
void (*un_scanline)(void *a, void *b[], int w);
};
static const struct regular_repacker regular_repackers[] = {
{32, 8, 0, 3, pa_ccc8z8, un_ccc8x8},
{32, 8, 8, 3, pa_z8ccc8, un_x8ccc8},
{32, 8, 0, 4, pa_cccc8, un_cccc8},
{64, 16, 0, 4, pa_cccc16, un_cccc16},
{64, 16, 0, 3, pa_ccc16z16, un_ccc16x16},
{24, 8, 0, 3, pa_ccc8, un_ccc8},
{48, 16, 0, 3, pa_ccc16, un_ccc16},
{16, 8, 0, 2, pa_cc8, un_cc8},
{32, 16, 0, 2, pa_cc16, un_cc16},
{32, 10, 0, 3, pa_ccc10z2, un_ccc10x2},
};
static void packed_repack(struct mp_repack *rp,
struct mp_image *a, int a_x, int a_y,
struct mp_image *b, int b_x, int b_y, int w)
{
uint32_t *pa = mp_image_pixel_ptr(a, 0, a_x, a_y);
void *pb[4] = {0};
for (int p = 0; p < b->num_planes; p++) {
int s = rp->components[p];
pb[p] = mp_image_pixel_ptr(b, s, b_x, b_y);
}
rp->packed_repack_scanline(pa, pb, w);
}
// Tries to set a packer/unpacker for component-wise byte aligned formats.
static void setup_packed_packer(struct mp_repack *rp)
{
struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(rp->imgfmt_a);
if (!(desc.flags & MP_IMGFLAG_HAS_COMPS) ||
!(desc.flags & MP_IMGFLAG_TYPE_UINT) ||
!(desc.flags & MP_IMGFLAG_NE) ||
desc.num_planes != 1)
return;
int num_real_components = 0;
int components[4] = {0};
for (int n = 0; n < MP_NUM_COMPONENTS; n++) {
if (!desc.comps[n].size)
continue;
if (desc.comps[n].size != desc.comps[0].size ||
desc.comps[n].pad != desc.comps[0].pad ||
desc.comps[n].offset % desc.comps[0].size)
return;
int item = desc.comps[n].offset / desc.comps[0].size;
if (item >= 4)
return;
components[item] = n + 1;
num_real_components++;
}
int depth = desc.comps[0].size + MPMIN(0, desc.comps[0].pad);
static const int reorder_gbrp[] = {0, 3, 1, 2, 4};
static const int reorder_yuv[] = {0, 1, 2, 3, 4};
int planar_fmt = 0;
const int *reorder = NULL;
if (desc.flags & MP_IMGFLAG_COLOR_YUV) {
planar_fmt = find_yuv_format(depth, num_real_components);
reorder = reorder_yuv;
} else {
planar_fmt = find_gbrp_format(depth, num_real_components);
reorder = reorder_gbrp;
}
if (!planar_fmt)
return;
for (int i = 0; i < MP_ARRAY_SIZE(regular_repackers); i++) {
const struct regular_repacker *pa = &regular_repackers[i];
// The following may assume little endian (because some repack backends
// use word access, while the metadata here uses byte access).
int prepad = components[0] ? 0 : 8;
int first_comp = components[0] ? 0 : 1;
void (*repack_cb)(void *pa, void *pb[], int w) =
rp->pack ? pa->pa_scanline : pa->un_scanline;
if (pa->packed_width != desc.bpp[0] ||
pa->component_width != depth ||
pa->num_components != num_real_components ||
pa->prepadding != prepad ||
!repack_cb)
continue;
rp->repack = packed_repack;
rp->packed_repack_scanline = repack_cb;
rp->imgfmt_b = planar_fmt;
for (int n = 0; n < num_real_components; n++) {
// Determine permutation that maps component order between the two
// formats, with has_alpha special case (see above).
int c = reorder[components[first_comp + n]];
rp->components[n] = c == 4 ? num_real_components - 1 : c - 1;
}
return;
}
}
#define PA_SHIFT_LUT8(name, packed_t) \
static void name(void *dst, void *src[], int w, uint8_t *lut, \
uint8_t s0, uint8_t s1, uint8_t s2) { \
for (int x = 0; x < w; x++) { \
((packed_t *)dst)[x] = \
(lut[((uint8_t *)src[0])[x] + 256 * 0] << s0) | \
(lut[((uint8_t *)src[1])[x] + 256 * 1] << s1) | \
(lut[((uint8_t *)src[2])[x] + 256 * 2] << s2); \
} \
}
#define UN_SHIFT_LUT8(name, packed_t) \
static void name(void *src, void *dst[], int w, uint8_t *lut, \
uint8_t s0, uint8_t s1, uint8_t s2) { \
for (int x = 0; x < w; x++) { \
packed_t c = ((packed_t *)src)[x]; \
((uint8_t *)dst[0])[x] = lut[((c >> s0) & 0xFF) + 256 * 0]; \
((uint8_t *)dst[1])[x] = lut[((c >> s1) & 0xFF) + 256 * 1]; \
((uint8_t *)dst[2])[x] = lut[((c >> s2) & 0xFF) + 256 * 2]; \
} \
}
PA_SHIFT_LUT8(pa_shift_lut8_8, uint8_t)
PA_SHIFT_LUT8(pa_shift_lut8_16, uint16_t)
UN_SHIFT_LUT8(un_shift_lut8_8, uint8_t)
UN_SHIFT_LUT8(un_shift_lut8_16, uint16_t)
static void fringe_rgb_repack(struct mp_repack *rp,
struct mp_image *a, int a_x, int a_y,
struct mp_image *b, int b_x, int b_y, int w)
{
void *pa = mp_image_pixel_ptr(a, 0, a_x, a_y);
void *pb[4] = {0};
for (int p = 0; p < b->num_planes; p++) {
int s = rp->components[p];
pb[p] = mp_image_pixel_ptr(b, s, b_x, b_y);
}
assert(rp->comp_size == 1 || rp->comp_size == 2);
void (*repack)(void *pa, void *pb[], int w, uint8_t *lut,
uint8_t s0, uint8_t s1, uint8_t s2) = NULL;
if (rp->pack) {
repack = rp->comp_size == 1 ? pa_shift_lut8_8 : pa_shift_lut8_16;
} else {
repack = rp->comp_size == 1 ? un_shift_lut8_8 : un_shift_lut8_16;
}
repack(pa, pb, w, rp->comp_lut,
rp->comp_shifts[0], rp->comp_shifts[1], rp->comp_shifts[2]);
}
static void setup_fringe_rgb_packer(struct mp_repack *rp)
{
struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(rp->imgfmt_a);
if (!(desc.flags & MP_IMGFLAG_HAS_COMPS))
return;
if (desc.bpp[0] > 16 || (desc.bpp[0] % 8u) ||
mp_imgfmt_get_forced_csp(rp->imgfmt_a) != MP_CSP_RGB ||
desc.num_planes != 1 || desc.comps[3].size)
return;
int depth = desc.comps[0].size;
for (int n = 0; n < 3; n++) {
struct mp_imgfmt_comp_desc *c = &desc.comps[n];
if (c->size < 1 || c->size > 8 || c->pad)
return;
if (rp->flags & REPACK_CREATE_ROUND_DOWN) {
depth = MPMIN(depth, c->size);
} else {
depth = MPMAX(depth, c->size);
}
}
if (rp->flags & REPACK_CREATE_EXPAND_8BIT)
depth = 8;
rp->imgfmt_b = find_gbrp_format(depth, 3);
if (!rp->imgfmt_b)
return;
rp->comp_lut = talloc_array(rp, uint8_t, 256 * 3);
rp->repack = fringe_rgb_repack;
for (int n = 0; n < 3; n++)
rp->components[n] = ((int[]){3, 1, 2})[n] - 1;
for (int n = 0; n < 3; n++) {
int bits = desc.comps[n].size;
rp->comp_shifts[n] = desc.comps[n].offset;
if (rp->comp_lut) {
uint8_t *lut = rp->comp_lut + 256 * n;
uint8_t zmax = (1 << depth) - 1;
uint8_t cmax = (1 << bits) - 1;
for (int v = 0; v < 256; v++) {
if (rp->pack) {
lut[v] = (v * cmax + zmax / 2) / zmax;
} else {
lut[v] = (v & cmax) * zmax / cmax;
}
}
}
}
rp->comp_size = (desc.bpp[0] + 7) / 8;
assert(rp->comp_size == 1 || rp->comp_size == 2);
if (desc.endian_shift) {
assert(rp->comp_size == 2 && (1 << desc.endian_shift) == 2);
rp->endian_size = 2;
}
}
static void unpack_pal(struct mp_repack *rp,
struct mp_image *a, int a_x, int a_y,
struct mp_image *b, int b_x, int b_y, int w)
{
uint8_t *src = mp_image_pixel_ptr(a, 0, a_x, a_y);
uint32_t *pal = (void *)a->planes[1];
uint8_t *dst[4] = {0};
for (int p = 0; p < b->num_planes; p++)
dst[p] = mp_image_pixel_ptr(b, p, b_x, b_y);
for (int x = 0; x < w; x++) {
uint32_t c = pal[src[x]];
dst[0][x] = (c >> 8) & 0xFF; // G
dst[1][x] = (c >> 0) & 0xFF; // B
dst[2][x] = (c >> 16) & 0xFF; // R
dst[3][x] = (c >> 24) & 0xFF; // A
}
}
static void bitmap_repack(struct mp_repack *rp,
struct mp_image *a, int a_x, int a_y,
struct mp_image *b, int b_x, int b_y, int w)
{
uint8_t *pa = mp_image_pixel_ptr(a, 0, a_x, a_y);
uint8_t *pb = mp_image_pixel_ptr(b, 0, b_x, b_y);
if (rp->pack) {
for (unsigned x = 0; x < w; x += 8) {
uint8_t d = 0;
int max_b = MPMIN(8, w - x);
for (int bp = 0; bp < max_b; bp++)
d |= (rp->comp_lut[pb[x + bp]]) << (7 - bp);
pa[x / 8] = d;
}
} else {
for (unsigned x = 0; x < w; x += 8) {
uint8_t d = pa[x / 8];
int max_b = MPMIN(8, w - x);
for (int bp = 0; bp < max_b; bp++)
pb[x + bp] = rp->comp_lut[d & (1 << (7 - bp))];
}
}
}
static void setup_misc_packer(struct mp_repack *rp)
{
if (rp->imgfmt_a == IMGFMT_PAL8 && !rp->pack) {
int grap_fmt = find_gbrp_format(8, 4);
if (!grap_fmt)
return;
rp->imgfmt_b = grap_fmt;
rp->repack = unpack_pal;
} else {
enum AVPixelFormat avfmt = imgfmt2pixfmt(rp->imgfmt_a);
if (avfmt == AV_PIX_FMT_MONOWHITE || avfmt == AV_PIX_FMT_MONOBLACK) {
rp->comp_lut = talloc_array(rp, uint8_t, 256);
rp->imgfmt_b = IMGFMT_Y1;
int max = 1;
if (rp->flags & REPACK_CREATE_EXPAND_8BIT) {
rp->imgfmt_b = IMGFMT_Y8;
max = 255;
}
bool inv = avfmt == AV_PIX_FMT_MONOWHITE;
for (int n = 0; n < 256; n++) {
rp->comp_lut[n] = rp->pack ? (inv ^ (n >= (max + 1) / 2))
: ((inv ^ !!n) ? max : 0);
}
rp->repack = bitmap_repack;
return;
}
}
}
#define PA_P422(name, comp_t) \
static void name(void *dst, void *src[], int w, uint8_t *c) { \
for (int x = 0; x < w; x += 2) { \
((comp_t *)dst)[x * 2 + c[0]] = ((comp_t *)src[0])[x + 0]; \
((comp_t *)dst)[x * 2 + c[1]] = ((comp_t *)src[0])[x + 1]; \
((comp_t *)dst)[x * 2 + c[4]] = ((comp_t *)src[1])[x >> 1]; \
((comp_t *)dst)[x * 2 + c[5]] = ((comp_t *)src[2])[x >> 1]; \
} \
}
#define UN_P422(name, comp_t) \
static void name(void *src, void *dst[], int w, uint8_t *c) { \
for (int x = 0; x < w; x += 2) { \
((comp_t *)dst[0])[x + 0] = ((comp_t *)src)[x * 2 + c[0]]; \
((comp_t *)dst[0])[x + 1] = ((comp_t *)src)[x * 2 + c[1]]; \
((comp_t *)dst[1])[x >> 1] = ((comp_t *)src)[x * 2 + c[4]]; \
((comp_t *)dst[2])[x >> 1] = ((comp_t *)src)[x * 2 + c[5]]; \
} \
}
PA_P422(pa_p422_8, uint8_t)
PA_P422(pa_p422_16, uint16_t)
UN_P422(un_p422_8, uint8_t)
UN_P422(un_p422_16, uint16_t)
static void pa_p411_8(void *dst, void *src[], int w, uint8_t *c)
{
for (int x = 0; x < w; x += 4) {
((uint8_t *)dst)[x / 4 * 6 + c[0]] = ((uint8_t *)src[0])[x + 0];
((uint8_t *)dst)[x / 4 * 6 + c[1]] = ((uint8_t *)src[0])[x + 1];
((uint8_t *)dst)[x / 4 * 6 + c[2]] = ((uint8_t *)src[0])[x + 2];
((uint8_t *)dst)[x / 4 * 6 + c[3]] = ((uint8_t *)src[0])[x + 3];
((uint8_t *)dst)[x / 4 * 6 + c[4]] = ((uint8_t *)src[1])[x >> 2];
((uint8_t *)dst)[x / 4 * 6 + c[5]] = ((uint8_t *)src[2])[x >> 2];
}
}
static void un_p411_8(void *src, void *dst[], int w, uint8_t *c)
{
for (int x = 0; x < w; x += 4) {
((uint8_t *)dst[0])[x + 0] = ((uint8_t *)src)[x / 4 * 6 + c[0]];
((uint8_t *)dst[0])[x + 1] = ((uint8_t *)src)[x / 4 * 6 + c[1]];
((uint8_t *)dst[0])[x + 2] = ((uint8_t *)src)[x / 4 * 6 + c[2]];
((uint8_t *)dst[0])[x + 3] = ((uint8_t *)src)[x / 4 * 6 + c[3]];
((uint8_t *)dst[1])[x >> 2] = ((uint8_t *)src)[x / 4 * 6 + c[4]];
((uint8_t *)dst[2])[x >> 2] = ((uint8_t *)src)[x / 4 * 6 + c[5]];
}
}
static void fringe_yuv_repack(struct mp_repack *rp,
struct mp_image *a, int a_x, int a_y,
struct mp_image *b, int b_x, int b_y, int w)
{
void *pa = mp_image_pixel_ptr(a, 0, a_x, a_y);
void *pb[4] = {0};
for (int p = 0; p < b->num_planes; p++)
pb[p] = mp_image_pixel_ptr(b, p, b_x, b_y);
rp->repack_fringe_yuv(pa, pb, w, rp->comp_map);
}
static void setup_fringe_yuv_packer(struct mp_repack *rp)
{
struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(rp->imgfmt_a);
if (!(desc.flags & MP_IMGFLAG_PACKED_SS_YUV) ||
mp_imgfmt_desc_get_num_comps(&desc) != 3 ||
desc.align_x > 4)
return;
uint8_t y_loc[4];
if (!mp_imgfmt_get_packed_yuv_locations(desc.id, y_loc))
return;
for (int n = 0; n < MP_NUM_COMPONENTS; n++) {
if (!desc.comps[n].size)
continue;
if (desc.comps[n].size != desc.comps[0].size ||
desc.comps[n].pad < 0 ||
desc.comps[n].offset % desc.comps[0].size)
return;
if (n == 1 || n == 2) {
rp->comp_map[4 + (n - 1)] =
desc.comps[n].offset / desc.comps[0].size;
}
}
for (int n = 0; n < desc.align_x; n++) {
if (y_loc[n] % desc.comps[0].size)
return;
rp->comp_map[n] = y_loc[n] / desc.comps[0].size;
}
if (desc.comps[0].size == 8 && desc.align_x == 2) {
rp->repack_fringe_yuv = rp->pack ? pa_p422_8 : un_p422_8;
} else if (desc.comps[0].size == 16 && desc.align_x == 2) {
rp->repack_fringe_yuv = rp->pack ? pa_p422_16 : un_p422_16;
} else if (desc.comps[0].size == 8 && desc.align_x == 4) {
rp->repack_fringe_yuv = rp->pack ? pa_p411_8 : un_p411_8;
}
if (!rp->repack_fringe_yuv)
return;
struct mp_regular_imgfmt yuvfmt = {
.component_type = MP_COMPONENT_TYPE_UINT,
// NB: same problem with P010 and not clearing padding.
.component_size = desc.comps[0].size / 8u,
.num_planes = 3,
.planes = { {1, {1}}, {1, {2}}, {1, {3}} },
.chroma_xs = desc.chroma_xs,
.chroma_ys = 0,
};
rp->imgfmt_b = mp_find_regular_imgfmt(&yuvfmt);
rp->repack = fringe_yuv_repack;
if (desc.endian_shift) {
rp->endian_size = 1 << desc.endian_shift;
assert(rp->endian_size == 2);
}
}
static void repack_nv(struct mp_repack *rp,
struct mp_image *a, int a_x, int a_y,
struct mp_image *b, int b_x, int b_y, int w)
{
int xs = a->fmt.chroma_xs;
uint32_t *pa = mp_image_pixel_ptr(a, 1, a_x, a_y);
void *pb[2];
for (int p = 0; p < 2; p++) {
int s = rp->components[p];
pb[p] = mp_image_pixel_ptr(b, s, b_x, b_y);
}
rp->packed_repack_scanline(pa, pb, (w + (1 << xs) - 1) >> xs);
}
static void setup_nv_packer(struct mp_repack *rp)
{
struct mp_regular_imgfmt desc;
if (!mp_get_regular_imgfmt(&desc, rp->imgfmt_a))
return;
// Check for NV.
if (desc.num_planes != 2)
return;
if (desc.planes[0].num_components != 1 || desc.planes[0].components[0] != 1)
return;
if (desc.planes[1].num_components != 2)
return;
int cr0 = desc.planes[1].components[0];
int cr1 = desc.planes[1].components[1];
if (cr0 > cr1)
MPSWAP(int, cr0, cr1);
if (cr0 != 2 || cr1 != 3)
return;
// Construct equivalent planar format.
struct mp_regular_imgfmt desc2 = desc;
desc2.num_planes = 3;
desc2.planes[1].num_components = 1;
desc2.planes[1].components[0] = 2;
desc2.planes[2].num_components = 1;
desc2.planes[2].components[0] = 3;
// For P010. Strangely this concept exists only for the NV format.
if (desc2.component_pad > 0)
desc2.component_pad = 0;
int planar_fmt = mp_find_regular_imgfmt(&desc2);
if (!planar_fmt)
return;
for (int i = 0; i < MP_ARRAY_SIZE(regular_repackers); i++) {
const struct regular_repacker *pa = &regular_repackers[i];
void (*repack_cb)(void *pa, void *pb[], int w) =
rp->pack ? pa->pa_scanline : pa->un_scanline;
if (pa->packed_width != desc.component_size * 2 * 8 ||
pa->component_width != desc.component_size * 8 ||
pa->num_components != 2 ||
pa->prepadding != 0 ||
!repack_cb)
continue;
rp->repack = repack_nv;
rp->passthrough_y = true;
rp->packed_repack_scanline = repack_cb;
rp->imgfmt_b = planar_fmt;
rp->components[0] = desc.planes[1].components[0] - 1;
rp->components[1] = desc.planes[1].components[1] - 1;
return;
}
}
#define PA_F32(name, packed_t) \
static void name(void *dst, float *src, int w, float m, float o, \
uint32_t p_max) { \
for (int x = 0; x < w; x++) { \
((packed_t *)dst)[x] = \
MPCLAMP(lrint((src[x] + o) * m), 0, (packed_t)p_max); \
} \
}
#define UN_F32(name, packed_t) \
static void name(void *src, float *dst, int w, float m, float o, \
uint32_t unused) { \
for (int x = 0; x < w; x++) \
dst[x] = ((packed_t *)src)[x] * m + o; \
}
PA_F32(pa_f32_8, uint8_t)
UN_F32(un_f32_8, uint8_t)
PA_F32(pa_f32_16, uint16_t)
UN_F32(un_f32_16, uint16_t)
// In all this, float counts as "unpacked".
static void repack_float(struct mp_repack *rp,
struct mp_image *a, int a_x, int a_y,
struct mp_image *b, int b_x, int b_y, int w)
{
assert(rp->f32_comp_size == 1 || rp->f32_comp_size == 2);
void (*packer)(void *a, float *b, int w, float fm, float fb, uint32_t max)
= rp->pack ? (rp->f32_comp_size == 1 ? pa_f32_8 : pa_f32_16)
: (rp->f32_comp_size == 1 ? un_f32_8 : un_f32_16);
for (int p = 0; p < b->num_planes; p++) {
int h = (1 << b->fmt.chroma_ys) - (1 << b->fmt.ys[p]) + 1;
for (int y = 0; y < h; y++) {
void *pa = mp_image_pixel_ptr_ny(a, p, a_x, a_y + y);
void *pb = mp_image_pixel_ptr_ny(b, p, b_x, b_y + y);
packer(pa, pb, w >> b->fmt.xs[p], rp->f32_m[p], rp->f32_o[p],
rp->f32_pmax[p]);
}
}
}
static void update_repack_float(struct mp_repack *rp)
{
if (!rp->f32_comp_size)
return;
// Image in input format.
struct mp_image *ui = rp->pack ? rp->steps[rp->num_steps - 1].buf[1]
: rp->steps[0].buf[0];
enum mp_csp csp = ui->params.color.space;
enum mp_csp_levels levels = ui->params.color.levels;
if (rp->f32_csp_space == csp && rp->f32_csp_levels == levels)
return;
// The fixed point format.
struct mp_regular_imgfmt desc = {0};
mp_get_regular_imgfmt(&desc, rp->imgfmt_b);
assert(desc.component_size);
int comp_bits = desc.component_size * 8 + MPMIN(desc.component_pad, 0);
for (int p = 0; p < desc.num_planes; p++) {
double m, o;
mp_get_csp_uint_mul(csp, levels, comp_bits, desc.planes[p].components[0],
&m, &o);
rp->f32_m[p] = rp->pack ? 1.0 / m : m;
rp->f32_o[p] = rp->pack ? -o : o;
rp->f32_pmax[p] = (1u << comp_bits) - 1;
}
rp->f32_csp_space = csp;
rp->f32_csp_levels = levels;
}
void repack_line(struct mp_repack *rp, int dst_x, int dst_y,
int src_x, int src_y, int w)
{
assert(rp->configured);
struct repack_step *first = &rp->steps[0];
struct repack_step *last = &rp->steps[rp->num_steps - 1];
assert(dst_x >= 0 && dst_y >= 0 && src_x >= 0 && src_y >= 0 && w >= 0);
assert(dst_x + w <= MP_ALIGN_UP(last->buf[1]->w, last->fmt[1].align_x));
assert(src_x + w <= MP_ALIGN_UP(first->buf[0]->w, first->fmt[0].align_x));
assert(dst_y < last->buf[1]->h);
assert(src_y < first->buf[0]->h);
assert(!(dst_x & (last->fmt[1].align_x - 1)));
assert(!(src_x & (first->fmt[0].align_x - 1)));
assert(!(w & ((1 << first->fmt[0].chroma_xs) - 1)));
assert(!(dst_y & (last->fmt[1].align_y - 1)));
assert(!(src_y & (first->fmt[0].align_y - 1)));
for (int n = 0; n < rp->num_steps; n++) {
struct repack_step *rs = &rp->steps[n];
// When writing to temporary buffers, always write to the start (maybe
// helps with locality).
int sx = rs->user_buf[0] ? src_x : 0;
int sy = rs->user_buf[0] ? src_y : 0;
int dx = rs->user_buf[1] ? dst_x : 0;
int dy = rs->user_buf[1] ? dst_y : 0;
struct mp_image *buf_a = rs->buf[rp->pack];
struct mp_image *buf_b = rs->buf[!rp->pack];
int a_x = rp->pack ? dx : sx;
int a_y = rp->pack ? dy : sy;
int b_x = rp->pack ? sx : dx;
int b_y = rp->pack ? sy : dy;
switch (rs->type) {
case REPACK_STEP_REPACK: {
if (rp->repack)
rp->repack(rp, buf_a, a_x, a_y, buf_b, b_x, b_y, w);
for (int p = 0; p < rs->fmt[0].num_planes; p++) {
if (rp->copy_buf[p])
copy_plane(rs->buf[1], dx, dy, rs->buf[0], sx, sy, w, p);
}
break;
}
case REPACK_STEP_ENDIAN:
swap_endian(rs->buf[1], dx, dy, rs->buf[0], sx, sy, w,
rp->endian_size);
break;
case REPACK_STEP_FLOAT:
repack_float(rp, buf_a, a_x, a_y, buf_b, b_x, b_y, w);
break;
}
}
}
static bool setup_format_ne(struct mp_repack *rp)
{
if (!rp->imgfmt_b)
setup_nv_packer(rp);
if (!rp->imgfmt_b)
setup_misc_packer(rp);
if (!rp->imgfmt_b)
setup_packed_packer(rp);
if (!rp->imgfmt_b)
setup_fringe_rgb_packer(rp);
if (!rp->imgfmt_b)
setup_fringe_yuv_packer(rp);
if (!rp->imgfmt_b)
rp->imgfmt_b = rp->imgfmt_a; // maybe it was planar after all
struct mp_regular_imgfmt desc;
if (!mp_get_regular_imgfmt(&desc, rp->imgfmt_b))
return false;
// no weird stuff
if (desc.num_planes > 4)
return false;
// Endian swapping.
if (rp->imgfmt_a != rp->imgfmt_user &&
rp->imgfmt_a == mp_find_other_endian(rp->imgfmt_user))
{
struct mp_imgfmt_desc desc_a = mp_imgfmt_get_desc(rp->imgfmt_a);
struct mp_imgfmt_desc desc_u = mp_imgfmt_get_desc(rp->imgfmt_user);
rp->endian_size = 1 << desc_u.endian_shift;
if (!desc_a.endian_shift && rp->endian_size != 2 && rp->endian_size != 4)
return false;
}
// Accept only true planar formats (with known components and no padding).
for (int n = 0; n < desc.num_planes; n++) {
if (desc.planes[n].num_components != 1)
return false;
int c = desc.planes[n].components[0];
if (c < 1 || c > 4)
return false;
}
rp->fmt_a = mp_imgfmt_get_desc(rp->imgfmt_a);
rp->fmt_b = mp_imgfmt_get_desc(rp->imgfmt_b);
// This is if we did a pack step.
if (rp->flags & REPACK_CREATE_PLANAR_F32) {
// imgfmt_b with float32 component type.
struct mp_regular_imgfmt fdesc = desc;
fdesc.component_type = MP_COMPONENT_TYPE_FLOAT;
fdesc.component_size = 4;
fdesc.component_pad = 0;
int ffmt = mp_find_regular_imgfmt(&fdesc);
if (!ffmt)
return false;
if (ffmt != rp->imgfmt_b) {
if (desc.component_type != MP_COMPONENT_TYPE_UINT ||
(desc.component_size != 1 && desc.component_size != 2))
return false;
rp->f32_comp_size = desc.component_size;
rp->f32_csp_space = MP_CSP_COUNT;
rp->f32_csp_levels = MP_CSP_LEVELS_COUNT;
rp->steps[rp->num_steps++] = (struct repack_step) {
.type = REPACK_STEP_FLOAT,
.fmt = {
mp_imgfmt_get_desc(ffmt),
rp->fmt_b,
},
};
}
}
rp->steps[rp->num_steps++] = (struct repack_step) {
.type = REPACK_STEP_REPACK,
.fmt = { rp->fmt_b, rp->fmt_a },
};
if (rp->endian_size) {
rp->steps[rp->num_steps++] = (struct repack_step) {
.type = REPACK_STEP_ENDIAN,
.fmt = {
rp->fmt_a,
mp_imgfmt_get_desc(rp->imgfmt_user),
},
};
}
// Reverse if unpack (to reflect actual data flow)
if (!rp->pack) {
for (int n = 0; n < rp->num_steps / 2; n++) {
MPSWAP(struct repack_step, rp->steps[n],
rp->steps[rp->num_steps - 1 - n]);
}
for (int n = 0; n < rp->num_steps; n++) {
struct repack_step *rs = &rp->steps[n];
MPSWAP(struct mp_imgfmt_desc, rs->fmt[0], rs->fmt[1]);
}
}
for (int n = 0; n < rp->num_steps - 1; n++)
assert(rp->steps[n].fmt[1].id == rp->steps[n + 1].fmt[0].id);
return true;
}
static void reset_params(struct mp_repack *rp)
{
rp->num_steps = 0;
rp->imgfmt_b = 0;
rp->repack = NULL;
rp->passthrough_y = false;
rp->endian_size = 0;
rp->packed_repack_scanline = NULL;
rp->comp_size = 0;
talloc_free(rp->comp_lut);
rp->comp_lut = NULL;
}
static bool setup_format(struct mp_repack *rp)
{
reset_params(rp);
rp->imgfmt_a = rp->imgfmt_user;
if (setup_format_ne(rp))
return true;
// Try reverse endian.
reset_params(rp);
rp->imgfmt_a = mp_find_other_endian(rp->imgfmt_user);
return rp->imgfmt_a && setup_format_ne(rp);
}
struct mp_repack *mp_repack_create_planar(int imgfmt, bool pack, int flags)
{
struct mp_repack *rp = talloc_zero(NULL, struct mp_repack);
rp->imgfmt_user = imgfmt;
rp->pack = pack;
rp->flags = flags;
if (!setup_format(rp)) {
talloc_free(rp);
return NULL;
}
return rp;
}
int mp_repack_get_format_src(struct mp_repack *rp)
{
return rp->steps[0].fmt[0].id;
}
int mp_repack_get_format_dst(struct mp_repack *rp)
{
return rp->steps[rp->num_steps - 1].fmt[1].id;
}
int mp_repack_get_align_x(struct mp_repack *rp)
{
// We really want the LCM between those, but since only one of them is
// packed (or they're the same format), and the chroma subsampling is the
// same for both, only the packed one matters.
return rp->fmt_a.align_x;
}
int mp_repack_get_align_y(struct mp_repack *rp)
{
return rp->fmt_a.align_y; // should be the same for packed/planar formats
}
static void image_realloc(struct mp_image **img, int fmt, int w, int h)
{
if (*img && (*img)->imgfmt == fmt && (*img)->w == w && (*img)->h == h)
return;
talloc_free(*img);
*img = mp_image_alloc(fmt, w, h);
}
bool repack_config_buffers(struct mp_repack *rp,
int dst_flags, struct mp_image *dst,
int src_flags, struct mp_image *src,
bool *enable_passthrough)
{
struct repack_step *rs_first = &rp->steps[0];
struct repack_step *rs_last = &rp->steps[rp->num_steps - 1];
rp->configured = false;
assert(dst && src);
int buf_w = MPMAX(dst->w, src->w);
assert(dst->imgfmt == rs_last->fmt[1].id);
assert(src->imgfmt == rs_first->fmt[0].id);
// Chain/allocate buffers.
for (int n = 0; n < rp->num_steps; n++)
rp->steps[n].buf[0] = rp->steps[n].buf[1] = NULL;
rs_first->buf[0] = src;
rs_last->buf[1] = dst;
for (int n = 0; n < rp->num_steps; n++) {
struct repack_step *rs = &rp->steps[n];
if (!rs->buf[0]) {
assert(n > 0);
rs->buf[0] = rp->steps[n - 1].buf[1];
}
if (rs->buf[1])
continue;
// Note: since repack_line() can have different src/dst offsets, we
// can't do true in-place in general.
bool can_inplace = rs->type == REPACK_STEP_ENDIAN &&
rs->buf[0] != src && rs->buf[0] != dst;
if (can_inplace) {
rs->buf[1] = rs->buf[0];
continue;
}
if (rs != rs_last) {
struct repack_step *next = &rp->steps[n + 1];
if (next->buf[0]) {
rs->buf[1] = next->buf[0];
continue;
}
}
image_realloc(&rs->tmp, rs->fmt[1].id, buf_w, rs->fmt[1].align_y);
if (!rs->tmp)
return false;
talloc_steal(rp, rs->tmp);
rs->buf[1] = rs->tmp;
}
for (int n = 0; n < rp->num_steps; n++) {
struct repack_step *rs = &rp->steps[n];
rs->user_buf[0] = rs->buf[0] == src || rs->buf[0] == dst;
rs->user_buf[1] = rs->buf[1] == src || rs->buf[1] == dst;
}
// If repacking is the only operation. It's also responsible for simply
// copying src to dst if absolutely no filtering is done.
bool may_passthrough =
rp->num_steps == 1 && rp->steps[0].type == REPACK_STEP_REPACK;
for (int p = 0; p < rp->fmt_b.num_planes; p++) {
// (All repack callbacks copy, except nv12 does not copy luma.)
bool repack_copies_plane = rp->repack && !(rp->passthrough_y && p == 0);
bool can_pt = may_passthrough && !repack_copies_plane &&
enable_passthrough && enable_passthrough[p];
// Copy if needed, unless the repack callback does it anyway.
rp->copy_buf[p] = !repack_copies_plane && !can_pt;
if (enable_passthrough)
enable_passthrough[p] = can_pt && !rp->copy_buf[p];
}
if (enable_passthrough) {
for (int n = rp->fmt_b.num_planes; n < MP_MAX_PLANES; n++)
enable_passthrough[n] = false;
}
update_repack_float(rp);
rp->configured = true;
return true;
}
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