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Diffstat (limited to '')
| -rw-r--r-- | video/repack.c | 1203 |
1 files changed, 1203 insertions, 0 deletions
diff --git a/video/repack.c b/video/repack.c new file mode 100644 index 0000000..ce3703a --- /dev/null +++ b/video/repack.c @@ -0,0 +1,1203 @@ +/* + * 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 = ®ular_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 = ®ular_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; +} |