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ffv1enc_vulkan: merge all encoder variants into one file

Makes it easier to work with, despite the heavy ifdeffery.

Lynne committed 1 year ago

Commit ebbc7ff1 parent fd18ae87 files · +244 −400Browse files

Showing the changes to libavcodec/vulkan (6 of 7 files). Show all

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6 files
  1. libavcodec/vulkan/Makefile +1 −3
  2. libavcodec/vulkan/ffv1_enc.comp +239 −1
  3. libavcodec/vulkan/ffv1_enc_ac.comp +0 −83
  4. libavcodec/vulkan/ffv1_enc_common.comp +0 −101
  5. libavcodec/vulkan/ffv1_enc_rgb.comp +0 −83
  6. libavcodec/vulkan/ffv1_enc_vlc.comp +0 −112
libavcodec/vulkan/Makefile+1−3
@@ -6,10 +6,8 @@ clean:: · 5 unmodified lines
6OBJS-$(CONFIG_FFV1_VULKAN_ENCODER) += vulkan/common.o \6OBJS-$(CONFIG_FFV1_VULKAN_ENCODER) += vulkan/common.o \
7 vulkan/rangecoder.o vulkan/ffv1_vlc.o \7 vulkan/rangecoder.o vulkan/ffv1_vlc.o \
8 vulkan/ffv1_common.o vulkan/ffv1_reset.o \8 vulkan/ffv1_common.o vulkan/ffv1_reset.o \
9 vulkan/ffv1_enc_common.o \
10 vulkan/ffv1_enc_rct.o vulkan/ffv1_enc_setup.o \9 vulkan/ffv1_enc_rct.o vulkan/ffv1_enc_setup.o \
11 vulkan/ffv1_enc_vlc.o vulkan/ffv1_enc_ac.o \10 vulkan/ffv1_enc.o
12 vulkan/ffv1_enc.o vulkan/ffv1_enc_rgb.o
13 11
14OBJS-$(CONFIG_FFV1_VULKAN_HWACCEL) += vulkan/common.o \12OBJS-$(CONFIG_FFV1_VULKAN_HWACCEL) += vulkan/common.o \
15 vulkan/rangecoder.o vulkan/ffv1_vlc.o \13 vulkan/rangecoder.o vulkan/ffv1_vlc.o \
libavcodec/vulkan/ffv1_enc.comp+239−1
@@ -20,12 +20,186 @@ · 19 unmodified lines
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */21 */
22 22
23ivec2 get_diff(ivec2 pos, ivec2 off, int p, int comp, int sw, int bits)
24{
25 const ivec2 yoff_border1 = off.x == 0 ? ivec2(1, -1) : ivec2(0, 0);
26 const ivec2 yoff_border2 = off.x == 1 ? ivec2(1, -1) : ivec2(0, 0);
27
28 TYPE top2 = TYPE(0);
29 if (off.y > 1)
30 top2 = TYPE(imageLoad(src[p], pos + ivec2(0, -2))[comp]);
31
32 VTYPE3 top = VTYPE3(TYPE(0),
33 TYPE(0),
34 TYPE(0));
35 if (off.y > 0 && off != ivec2(0, 1))
36 top[0] = TYPE(imageLoad(src[p], pos + ivec2(-1, -1) + yoff_border1)[comp]);
37 if (off.y > 0) {
38 top[1] = TYPE(imageLoad(src[p], pos + ivec2(0, -1))[comp]);
39 top[2] = TYPE(imageLoad(src[p], pos + ivec2(min(1, sw - off.x - 1), -1))[comp]);
40 }
41
42 VTYPE3 cur = VTYPE3(TYPE(0),
43 TYPE(0),
44 imageLoad(src[p], pos)[comp]);
45 if (off.x > 0 && off != ivec2(1, 0))
46 cur[0] = TYPE(imageLoad(src[p], pos + ivec2(-2, 0) + yoff_border2)[comp]);
47 if (off != ivec2(0, 0))
48 cur[1] = TYPE(imageLoad(src[p], pos + ivec2(-1, 0) + yoff_border1)[comp]);
49
50 /* context, diff */
51 ivec2 d = ivec2(get_context(VTYPE2(cur), top, top2, context_model),
52 cur[2] - predict(cur[1], VTYPE2(top)));
53
54 if (d[0] < 0)
55 d = -d;
56
57 d[1] = fold(d[1], bits);
58
59 return d;
60}
61
62#ifndef GOLOMB
63void put_rac(inout RangeCoder c, uint64_t state, bool bit)
64{
65 put_rac_norenorm(c, state, bit);
66 if (c.range < 0x100)
67 renorm_encoder(c);
68}
69
70/* Note - only handles signed values */
71void put_symbol(inout RangeCoder c, uint64_t state, int v)
72{
73 bool is_nil = (v == 0);
74 put_rac(c, state, is_nil);
75 if (is_nil)
76 return;
77
78 const int a = abs(v);
79 const int e = findMSB(a);
80
81 state += 1;
82 for (int i = 0; i < e; i++)
83 put_rac(c, state + min(i, 9), true);
84 put_rac(c, state + min(e, 9), false);
85
86 state += 21;
87 for (int i = e - 1; i >= 0; i--)
88 put_rac(c, state + min(i, 9), bool(bitfieldExtract(a, i, 1)));
89
90 put_rac(c, state - 11 + min(e, 10), v < 0);
91}
92
93void encode_line_pcm(inout SliceContext sc, int y, int p, int comp,
94 int bits)
95{
96 ivec2 sp = sc.slice_pos;
97 int w = sc.slice_dim.x;
98 if (p > 0 && p < 3) {
99 w >>= chroma_shift.x;
100 sp >>= chroma_shift;
101 }
102
103 for (int x = 0; x < w; x++) {
104 uint v = imageLoad(src[p], (sp + ivec2(x, y)))[comp];
105 for (int i = (bits - 1); i >= 0; i--)
106 put_rac_equi(sc.c, bool(bitfieldExtract(v, i, 1)));
107 }
108}
109
110void encode_line(inout SliceContext sc, uint64_t state,
111 int y, int p, int comp, int bits, const int run_index)
112{
113 ivec2 sp = sc.slice_pos;
114
115 int w = sc.slice_dim.x;
116 if (p > 0 && p < 3) {
117 w >>= chroma_shift.x;
118 sp >>= chroma_shift;
119 }
120
121 for (int x = 0; x < w; x++) {
122 const ivec2 d = get_diff(sp + ivec2(x, y), ivec2(x, y), p, comp, w, bits);
123 put_symbol(sc.c, state + CONTEXT_SIZE*d[0], d[1]);
124 }
125}
126
127#else /* GOLOMB */
128
129void encode_line(inout SliceContext sc, uint64_t state,
130 int y, int p, int comp, int bits, inout int run_index)
131{
132 ivec2 sp = sc.slice_pos;
133
134 int w = sc.slice_dim.x;
135 if (p > 0 && p < 3) {
136 w >>= chroma_shift.x;
137 sp >>= chroma_shift;
138 }
139
140 int run_count = 0;
141 bool run_mode = false;
142
143 for (int x = 0; x < w; x++) {
144 ivec2 d = get_diff(sp + ivec2(x, y), ivec2(x, y), p, comp, w, bits);
145
146 if (d[0] == 0)
147 run_mode = true;
148
149 if (run_mode) {
150 if (d[1] != 0) {
151 /* A very unlikely loop */
152 while (run_count >= 1 << log2_run[run_index]) {
153 run_count -= 1 << log2_run[run_index];
154 run_index++;
155 put_bits(sc.pb, 1, 1);
156 }
157
158 put_bits(sc.pb, 1 + log2_run[run_index], run_count);
159 if (run_index != 0)
160 run_index--;
161 run_count = 0;
162 run_mode = false;
163 if (d[1] > 0)
164 d[1]--;
165 } else {
166 run_count++;
167 }
168 }
169
170 if (!run_mode) {
171 VlcState sb = VlcState(state + VLC_STATE_SIZE*d[0]);
172 Symbol sym = get_vlc_symbol(sb, d[1], bits);
173 put_bits(sc.pb, sym.bits, sym.val);
174 }
175 }
176
177 if (run_mode) {
178 while (run_count >= (1 << log2_run[run_index])) {
179 run_count -= 1 << log2_run[run_index];
180 run_index++;
181 put_bits(sc.pb, 1, 1);
182 }
183
184 if (run_count > 0)
185 put_bits(sc.pb, 1, 1);
186 }
187}
188#endif
189
23void encode_slice(inout SliceContext sc, const uint slice_idx)190void encode_slice(inout SliceContext sc, const uint slice_idx)
24{191{
192#ifndef RGB
25 int bits = bits_per_raw_sample;193 int bits = bits_per_raw_sample;
194#else
195 int bits = 9;
196 if (bits != 8 || sc.slice_coding_mode != 0)
197 bits = bits_per_raw_sample + int(sc.slice_coding_mode != 1);
198#endif
26 199
27#ifndef GOLOMB200#ifndef GOLOMB
28 if (sc.slice_coding_mode == 1) {201 if (sc.slice_coding_mode == 1) {
202#ifndef RGB
29 for (int c = 0; c < components; c++) {203 for (int c = 0; c < components; c++) {
30 204
31 int h = sc.slice_dim.y;205 int h = sc.slice_dim.y;
@@ -39,12 +213,22 @@ void encode_slice(inout SliceContext sc, const uint slice_idx) · 7 unmodified lines
39 for (int y = 0; y < h; y++)213 for (int y = 0; y < h; y++)
40 encode_line_pcm(sc, y, p, comp, bits);214 encode_line_pcm(sc, y, p, comp, bits);
41 }215 }
216#else
217 for (int y = 0; y < sc.slice_dim.y; y++) {
218 encode_line_pcm(sc, y, 0, 1, bits);
219 encode_line_pcm(sc, y, 0, 2, bits);
220 encode_line_pcm(sc, y, 0, 0, bits);
221 if (transparency == 1)
222 encode_line_pcm(sc, y, 0, 3, bits);
223 }
224#endif
42 } else225 } else
43#endif226#endif
44 {227 {
45 uint64_t slice_state_off = uint64_t(slice_state) +228 uint64_t slice_state_off = uint64_t(slice_state) +
46 slice_idx*plane_state_size*codec_planes;229 slice_idx*plane_state_size*codec_planes;
47 230
231#ifndef RGB
48 for (int c = 0; c < components; c++) {232 for (int c = 0; c < components; c++) {
49 int run_index = 0;233 int run_index = 0;
50 234
@@ -62,13 +246,67 @@ void encode_slice(inout SliceContext sc, const uint slice_idx) · 11 unmodified lines
62 if (c != 1)246 if (c != 1)
63 slice_state_off += plane_state_size;247 slice_state_off += plane_state_size;
64 }248 }
249#else
250 int run_index = 0;
251 for (int y = 0; y < sc.slice_dim.y; y++) {
252 encode_line(sc, slice_state_off + plane_state_size*0,
253 y, 0, 1, bits, run_index);
254 encode_line(sc, slice_state_off + plane_state_size*1,
255 y, 0, 2, bits, run_index);
256 encode_line(sc, slice_state_off + plane_state_size*1,
257 y, 0, 0, bits, run_index);
258 if (transparency == 1)
259 encode_line(sc, slice_state_off + plane_state_size*2,
260 y, 0, 3, bits, run_index);
261 }
262#endif
263 }
264}
265
266void finalize_slice(inout SliceContext sc, const uint slice_idx)
267{
268#ifdef GOLOMB
269 uint32_t enc_len = sc.hdr_len + flush_put_bits(sc.pb);
270#else
271 uint32_t enc_len = rac_terminate(sc.c);
272#endif
273
274 u8buf bs = u8buf(sc.c.bytestream_start);
275
276 /* Append slice length */
277 u8vec4 enc_len_p = unpack8(enc_len);
278 bs[enc_len + 0].v = enc_len_p.z;
279 bs[enc_len + 1].v = enc_len_p.y;
280 bs[enc_len + 2].v = enc_len_p.x;
281 enc_len += 3;
282
283 /* Calculate and write CRC */
284 if (ec != 0) {
285 bs[enc_len].v = uint8_t(0);
286 enc_len++;
287
288 uint32_t crc = crcref;
289 for (int i = 0; i < enc_len; i++)
290 crc = crc_ieee[(crc & 0xFF) ^ uint32_t(bs[i].v)] ^ (crc >> 8);
291
292 if (crcref != 0x00000000)
293 crc ^= 0x8CD88196;
294
295 u8vec4 crc_p = unpack8(crc);
296 bs[enc_len + 0].v = crc_p.x;
297 bs[enc_len + 1].v = crc_p.y;
298 bs[enc_len + 2].v = crc_p.z;
299 bs[enc_len + 3].v = crc_p.w;
300 enc_len += 4;
65 }301 }
66 302
67 finalize_slice(sc, slice_idx);303 slice_results[slice_idx*2 + 0] = enc_len;
304 slice_results[slice_idx*2 + 1] = uint64_t(bs) - uint64_t(out_data);
68}305}
69 306
70void main(void)307void main(void)
71{308{
72 const uint slice_idx = gl_WorkGroupID.y*gl_NumWorkGroups.x + gl_WorkGroupID.x;309 const uint slice_idx = gl_WorkGroupID.y*gl_NumWorkGroups.x + gl_WorkGroupID.x;
73 encode_slice(slice_ctx[slice_idx], slice_idx);310 encode_slice(slice_ctx[slice_idx], slice_idx);
311 finalize_slice(slice_ctx[slice_idx], slice_idx);
74}312}
libavcodec/vulkan/ffv1_enc_ac.comp+0−83
@@ -1,83 +0,0 @@
1/*
2 * Copyright (c) 2024 Lynne <dev@lynne.ee>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21void put_rac(inout RangeCoder c, uint64_t state, bool bit)
22{
23 put_rac_norenorm(c, state, bit);
24 if (c.range < 0x100)
25 renorm_encoder(c);
26}
27
28/* Note - only handles signed values */
29void put_symbol(inout RangeCoder c, uint64_t state, int v)
30{
31 bool is_nil = (v == 0);
32 put_rac(c, state, is_nil);
33 if (is_nil)
34 return;
35
36 const int a = abs(v);
37 const int e = findMSB(a);
38
39 state += 1;
40 for (int i = 0; i < e; i++)
41 put_rac(c, state + min(i, 9), true);
42 put_rac(c, state + min(e, 9), false);
43
44 state += 21;
45 for (int i = e - 1; i >= 0; i--)
46 put_rac(c, state + min(i, 9), bool(bitfieldExtract(a, i, 1)));
47
48 put_rac(c, state - 11 + min(e, 10), v < 0);
49}
50
51void encode_line_pcm(inout SliceContext sc, int y, int p, int comp,
52 int bits)
53{
54 ivec2 sp = sc.slice_pos;
55 int w = sc.slice_dim.x;
56 if (p > 0 && p < 3) {
57 w >>= chroma_shift.x;
58 sp >>= chroma_shift;
59 }
60
61 for (int x = 0; x < w; x++) {
62 uint v = imageLoad(src[p], (sp + ivec2(x, y)))[comp];
63 for (int i = (bits - 1); i >= 0; i--)
64 put_rac_equi(sc.c, bool(bitfieldExtract(v, i, 1)));
65 }
66}
67
68void encode_line(inout SliceContext sc, uint64_t state,
69 int y, int p, int comp, int bits, const int run_index)
70{
71 ivec2 sp = sc.slice_pos;
72
73 int w = sc.slice_dim.x;
74 if (p > 0 && p < 3) {
75 w >>= chroma_shift.x;
76 sp >>= chroma_shift;
77 }
78
79 for (int x = 0; x < w; x++) {
80 const ivec2 d = get_diff(sp + ivec2(x, y), ivec2(x, y), p, comp, w, bits);
81 put_symbol(sc.c, state + CONTEXT_SIZE*d[0], d[1]);
82 }
83}
libavcodec/vulkan/ffv1_enc_common.comp+0−101
@@ -1,101 +0,0 @@
1/*
2 * FFv1 codec
3 *
4 * Copyright (c) 2024 Lynne <dev@lynne.ee>
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23ivec2 get_diff(ivec2 pos, ivec2 off, int p, int comp, int sw, int bits)
24{
25 const ivec2 yoff_border1 = off.x == 0 ? ivec2(1, -1) : ivec2(0, 0);
26 const ivec2 yoff_border2 = off.x == 1 ? ivec2(1, -1) : ivec2(0, 0);
27
28 TYPE top2 = TYPE(0);
29 if (off.y > 1)
30 top2 = TYPE(imageLoad(src[p], pos + ivec2(0, -2))[comp]);
31
32 VTYPE3 top = VTYPE3(TYPE(0),
33 TYPE(0),
34 TYPE(0));
35 if (off.y > 0 && off != ivec2(0, 1))
36 top[0] = TYPE(imageLoad(src[p], pos + ivec2(-1, -1) + yoff_border1)[comp]);
37 if (off.y > 0) {
38 top[1] = TYPE(imageLoad(src[p], pos + ivec2(0, -1))[comp]);
39 top[2] = TYPE(imageLoad(src[p], pos + ivec2(min(1, sw - off.x - 1), -1))[comp]);
40 }
41
42 VTYPE3 cur = VTYPE3(TYPE(0),
43 TYPE(0),
44 imageLoad(src[p], pos)[comp]);
45 if (off.x > 0 && off != ivec2(1, 0))
46 cur[0] = TYPE(imageLoad(src[p], pos + ivec2(-2, 0) + yoff_border2)[comp]);
47 if (off != ivec2(0, 0))
48 cur[1] = TYPE(imageLoad(src[p], pos + ivec2(-1, 0) + yoff_border1)[comp]);
49
50 /* context, diff */
51 ivec2 d = ivec2(get_context(VTYPE2(cur), top, top2, context_model),
52 cur[2] - predict(cur[1], VTYPE2(top)));
53
54 if (d[0] < 0)
55 d = -d;
56
57 d[1] = fold(d[1], bits);
58
59 return d;
60}
61
62void finalize_slice(inout SliceContext sc, const uint slice_idx)
63{
64#ifdef GOLOMB
65 uint32_t enc_len = sc.hdr_len + flush_put_bits(sc.pb);
66#else
67 uint32_t enc_len = rac_terminate(sc.c);
68#endif
69
70 u8buf bs = u8buf(sc.c.bytestream_start);
71
72 /* Append slice length */
73 u8vec4 enc_len_p = unpack8(enc_len);
74 bs[enc_len + 0].v = enc_len_p.z;
75 bs[enc_len + 1].v = enc_len_p.y;
76 bs[enc_len + 2].v = enc_len_p.x;
77 enc_len += 3;
78
79 /* Calculate and write CRC */
80 if (ec != 0) {
81 bs[enc_len].v = uint8_t(0);
82 enc_len++;
83
84 uint32_t crc = crcref;
85 for (int i = 0; i < enc_len; i++)
86 crc = crc_ieee[(crc & 0xFF) ^ uint32_t(bs[i].v)] ^ (crc >> 8);
87
88 if (crcref != 0x00000000)
89 crc ^= 0x8CD88196;
90
91 u8vec4 crc_p = unpack8(crc);
92 bs[enc_len + 0].v = crc_p.x;
93 bs[enc_len + 1].v = crc_p.y;
94 bs[enc_len + 2].v = crc_p.z;
95 bs[enc_len + 3].v = crc_p.w;
96 enc_len += 4;
97 }
98
99 slice_results[slice_idx*2 + 0] = enc_len;
100 slice_results[slice_idx*2 + 1] = uint64_t(bs) - uint64_t(out_data);
101}
libavcodec/vulkan/ffv1_enc_rgb.comp+0−83
@@ -1,83 +0,0 @@
1/*
2 * FFv1 codec
3 *
4 * Copyright (c) 2024 Lynne <dev@lynne.ee>
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23void encode_slice_rgb(inout SliceContext sc, const uint slice_idx)
24{
25 int bits = 9;
26 if (bits != 8 || sc.slice_coding_mode != 0)
27 bits = bits_per_raw_sample + int(sc.slice_coding_mode != 1);
28
29 int run_index = 0;
30
31#ifndef GOLOMB
32 if (sc.slice_coding_mode == 1) {
33 if (transparency == 1) {
34 for (int y = 0; y < sc.slice_dim.y; y++) {
35 encode_line_pcm(sc, y, 0, 1, bits);
36 encode_line_pcm(sc, y, 0, 2, bits);
37 encode_line_pcm(sc, y, 0, 0, bits);
38 encode_line_pcm(sc, y, 0, 3, bits);
39 }
40 } else {
41 for (int y = 0; y < sc.slice_dim.y; y++) {
42 encode_line_pcm(sc, y, 0, 1, bits);
43 encode_line_pcm(sc, y, 0, 2, bits);
44 encode_line_pcm(sc, y, 0, 0, bits);
45 }
46 }
47 } else
48#endif
49 {
50 uint64_t slice_state_off = uint64_t(slice_state) +
51 slice_idx*plane_state_size*codec_planes;
52
53 if (transparency == 1) {
54 for (int y = 0; y < sc.slice_dim.y; y++) {
55 encode_line(sc, slice_state_off + plane_state_size*0,
56 y, 0, 1, bits, run_index);
57 encode_line(sc, slice_state_off + plane_state_size*1,
58 y, 0, 2, bits, run_index);
59 encode_line(sc, slice_state_off + plane_state_size*1,
60 y, 0, 0, bits, run_index);
61 encode_line(sc, slice_state_off + plane_state_size*2,
62 y, 0, 3, bits, run_index);
63 }
64 } else {
65 for (int y = 0; y < sc.slice_dim.y; y++) {
66 encode_line(sc, slice_state_off + plane_state_size*0,
67 y, 0, 1, bits, run_index);
68 encode_line(sc, slice_state_off + plane_state_size*1,
69 y, 0, 2, bits, run_index);
70 encode_line(sc, slice_state_off + plane_state_size*1,
71 y, 0, 0, bits, run_index);
72 }
73 }
74 }
75
76 finalize_slice(sc, slice_idx);
77}
78
79void main(void)
80{
81 const uint slice_idx = gl_WorkGroupID.y*gl_NumWorkGroups.x + gl_WorkGroupID.x;
82 encode_slice_rgb(slice_ctx[slice_idx], slice_idx);
83}
libavcodec/vulkan/ffv1_enc_vlc.comp+0−112
@@ -1,112 +0,0 @@
1/*
2 * FFv1 codec
3 *
4 * Copyright (c) 2024 Lynne <dev@lynne.ee>
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23struct RLEState {
24 int count;
25 int diff;
26 int index;
27 bool mode;
28};
29
30void calc_new_state(inout RLEState state, int context)
31{
32 if (context == 0)
33 state.mode = false;
34
35 if (!state.mode)
36 return;
37
38 if (state.diff > 0) {
39 while (state.count >= (1 << log2_run[state.index])) {
40 state.count -= 1 << log2_run[state.index];
41 state.index++;
42 }
43 if (state.index > 0)
44 state.index--;
45 state.count = 0;
46 state.mode = false;
47 if (state.diff > 0)
48 state.diff--;
49 } else {
50 state.count++;
51 }
52}
53
54void encode_line(inout SliceContext sc, uint64_t state,
55 int y, int p, int comp, int bits, inout int run_index)
56{
57 ivec2 sp = sc.slice_pos;
58
59 int w = sc.slice_dim.x;
60 if (p > 0 && p < 3) {
61 w >>= chroma_shift.x;
62 sp >>= chroma_shift;
63 }
64
65 int run_count = 0;
66 bool run_mode = false;
67
68 for (int x = 0; x < w; x++) {
69 ivec2 d = get_diff(sp + ivec2(x, y), ivec2(x, y), p, comp, w, bits);
70
71 if (d[0] == 0)
72 run_mode = true;
73
74 if (run_mode) {
75 if (d[1] != 0) {
76 /* A very unlikely loop */
77 while (run_count >= 1 << log2_run[run_index]) {
78 run_count -= 1 << log2_run[run_index];
79 run_index++;
80 put_bits(sc.pb, 1, 1);
81 }
82
83 put_bits(sc.pb, 1 + log2_run[run_index], run_count);
84 if (run_index != 0)
85 run_index--;
86 run_count = 0;
87 run_mode = false;
88 if (d[1] > 0)
89 d[1]--;
90 } else {
91 run_count++;
92 }
93 }
94
95 if (!run_mode) {
96 VlcState sb = VlcState(state + VLC_STATE_SIZE*d[0]);
97 Symbol sym = get_vlc_symbol(sb, d[1], bits);
98 put_bits(sc.pb, sym.bits, sym.val);
99 }
100 }
101
102 if (run_mode) {
103 while (run_count >= (1 << log2_run[run_index])) {
104 run_count -= 1 << log2_run[run_index];
105 run_index++;
106 put_bits(sc.pb, 1, 1);
107 }
108
109 if (run_count > 0)
110 put_bits(sc.pb, 1, 1);
111 }
112}

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