2 * FFV1 encoder template
4 * Copyright (c) 2003-2016 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
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.
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.
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
23 static av_always_inline int RENAME(encode_line)(FFV1Context *s, int w,
25 int plane_index, int bits)
27 PlaneContext *const p = &s->plane[plane_index];
28 RangeCoder *const c = &s->c;
30 int run_index = s->run_index;
34 if (s->ac != AC_GOLOMB_RICE) {
35 if (c->bytestream_end - c->bytestream < w * 35) {
36 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
37 return AVERROR_INVALIDDATA;
40 if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < w * 4) {
41 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
42 return AVERROR_INVALIDDATA;
46 if (s->slice_coding_mode == 1) {
47 for (x = 0; x < w; x++) {
50 for (i = bits-1; i>=0; i--) {
52 put_rac(c, &state, (v>>i) & 1);
58 for (x = 0; x < w; x++) {
61 context = RENAME(get_context)(p, sample[0] + x, sample[1] + x, sample[2] + x);
62 diff = sample[0][x] - RENAME(predict)(sample[0] + x, sample[1] + x);
69 diff = fold(diff, bits);
71 if (s->ac != AC_GOLOMB_RICE) {
72 if (s->flags & AV_CODEC_FLAG_PASS1) {
73 put_symbol_inline(c, p->state[context], diff, 1, s->rc_stat,
74 s->rc_stat2[p->quant_table_index][context]);
76 put_symbol_inline(c, p->state[context], diff, 1, NULL, NULL);
84 while (run_count >= 1 << ff_log2_run[run_index]) {
85 run_count -= 1 << ff_log2_run[run_index];
87 put_bits(&s->pb, 1, 1);
90 put_bits(&s->pb, 1 + ff_log2_run[run_index], run_count);
102 ff_dlog(s->avctx, "count:%d index:%d, mode:%d, x:%d pos:%d\n",
103 run_count, run_index, run_mode, x,
104 (int)put_bits_count(&s->pb));
107 put_vlc_symbol(&s->pb, &p->vlc_state[context], diff, bits);
111 while (run_count >= 1 << ff_log2_run[run_index]) {
112 run_count -= 1 << ff_log2_run[run_index];
114 put_bits(&s->pb, 1, 1);
118 put_bits(&s->pb, 1, 1);
120 s->run_index = run_index;
125 static int RENAME(encode_rgb_frame)(FFV1Context *s, const uint8_t *src[3],
126 int w, int h, const int stride[3])
129 const int ring_size = s->context_model ? 3 : 2;
131 int lbd = s->bits_per_raw_sample <= 8;
132 int packed = !src[1];
133 int bits = s->bits_per_raw_sample > 0 ? s->bits_per_raw_sample : 8;
134 int offset = 1 << bits;
138 memset(RENAME(s->sample_buffer), 0, ring_size * MAX_PLANES *
139 (w + 6) * sizeof(*RENAME(s->sample_buffer)));
141 for (y = 0; y < h; y++) {
142 for (i = 0; i < ring_size; i++)
143 for (p = 0; p < MAX_PLANES; p++)
144 sample[p][i]= RENAME(s->sample_buffer) + p*ring_size*(w+6) + ((h+i-y)%ring_size)*(w+6) + 3;
146 for (x = 0; x < w; x++) {
147 int b, g, r, av_uninit(a);
149 unsigned v = *((const uint32_t*)(src[0] + x*4 + stride[0]*y));
152 r = (v >> 16) & 0xFF;
155 const uint16_t *p = ((const uint16_t*)(src[0] + x*6 + stride[0]*y));
159 } else if (sizeof(TYPE) == 4) {
160 g = *((const uint16_t *)(src[0] + x*2 + stride[0]*y));
161 b = *((const uint16_t *)(src[1] + x*2 + stride[1]*y));
162 r = *((const uint16_t *)(src[2] + x*2 + stride[2]*y));
164 b = *((const uint16_t *)(src[0] + x*2 + stride[0]*y));
165 g = *((const uint16_t *)(src[1] + x*2 + stride[1]*y));
166 r = *((const uint16_t *)(src[2] + x*2 + stride[2]*y));
169 if (s->slice_coding_mode != 1) {
172 g += (b * s->slice_rct_by_coef + r * s->slice_rct_ry_coef) >> 2;
182 for (p = 0; p < 3 + s->transparency; p++) {
184 sample[p][0][-1] = sample[p][1][0 ];
185 sample[p][1][ w] = sample[p][1][w-1];
186 if (lbd && s->slice_coding_mode == 0)
187 ret = RENAME(encode_line)(s, w, sample[p], (p + 1) / 2, 9);
189 ret = RENAME(encode_line)(s, w, sample[p], (p + 1) / 2, bits + (s->slice_coding_mode != 1));