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path: root/libavcodec/v210enc.c (plain)
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1/*
2 * V210 encoder
3 *
4 * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
5 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#include "avcodec.h"
25#include "bytestream.h"
26#include "internal.h"
27#include "v210enc.h"
28
29#define CLIP(v) av_clip(v, 4, 1019)
30#define CLIP8(v) av_clip(v, 1, 254)
31
32#define WRITE_PIXELS(a, b, c) \
33 do { \
34 val = CLIP(*a++); \
35 val |= (CLIP(*b++) << 10) | \
36 (CLIP(*c++) << 20); \
37 AV_WL32(dst, val); \
38 dst += 4; \
39 } while (0)
40
41#define WRITE_PIXELS8(a, b, c) \
42 do { \
43 val = (CLIP8(*a++) << 2); \
44 val |= (CLIP8(*b++) << 12) | \
45 (CLIP8(*c++) << 22); \
46 AV_WL32(dst, val); \
47 dst += 4; \
48 } while (0)
49
50static void v210_planar_pack_8_c(const uint8_t *y, const uint8_t *u,
51 const uint8_t *v, uint8_t *dst,
52 ptrdiff_t width)
53{
54 uint32_t val;
55 int i;
56
57 /* unroll this to match the assembly */
58 for (i = 0; i < width - 11; i += 12) {
59 WRITE_PIXELS8(u, y, v);
60 WRITE_PIXELS8(y, u, y);
61 WRITE_PIXELS8(v, y, u);
62 WRITE_PIXELS8(y, v, y);
63 WRITE_PIXELS8(u, y, v);
64 WRITE_PIXELS8(y, u, y);
65 WRITE_PIXELS8(v, y, u);
66 WRITE_PIXELS8(y, v, y);
67 }
68}
69
70static void v210_planar_pack_10_c(const uint16_t *y, const uint16_t *u,
71 const uint16_t *v, uint8_t *dst,
72 ptrdiff_t width)
73{
74 uint32_t val;
75 int i;
76
77 for (i = 0; i < width - 5; i += 6) {
78 WRITE_PIXELS(u, y, v);
79 WRITE_PIXELS(y, u, y);
80 WRITE_PIXELS(v, y, u);
81 WRITE_PIXELS(y, v, y);
82 }
83}
84
85av_cold void ff_v210enc_init(V210EncContext *s)
86{
87 s->pack_line_8 = v210_planar_pack_8_c;
88 s->pack_line_10 = v210_planar_pack_10_c;
89 s->sample_factor_8 = 1;
90 s->sample_factor_10 = 1;
91
92 if (ARCH_X86)
93 ff_v210enc_init_x86(s);
94}
95
96static av_cold int encode_init(AVCodecContext *avctx)
97{
98 V210EncContext *s = avctx->priv_data;
99
100 if (avctx->width & 1) {
101 av_log(avctx, AV_LOG_ERROR, "v210 needs even width\n");
102 return AVERROR(EINVAL);
103 }
104
105#if FF_API_CODED_FRAME
106FF_DISABLE_DEPRECATION_WARNINGS
107 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
108FF_ENABLE_DEPRECATION_WARNINGS
109#endif
110
111 ff_v210enc_init(s);
112
113 avctx->bits_per_coded_sample = 20;
114 avctx->bit_rate = ff_guess_coded_bitrate(avctx) * 16 / 15;
115
116 return 0;
117}
118
119static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
120 const AVFrame *pic, int *got_packet)
121{
122 V210EncContext *s = avctx->priv_data;
123 int aligned_width = ((avctx->width + 47) / 48) * 48;
124 int stride = aligned_width * 8 / 3;
125 int line_padding = stride - ((avctx->width * 8 + 11) / 12) * 4;
126 int h, w, ret;
127 uint8_t *dst;
128
129 ret = ff_alloc_packet2(avctx, pkt, avctx->height * stride, avctx->height * stride);
130 if (ret < 0) {
131 av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
132 return ret;
133 }
134 dst = pkt->data;
135
136 if (pic->format == AV_PIX_FMT_YUV422P10) {
137 const uint16_t *y = (const uint16_t *)pic->data[0];
138 const uint16_t *u = (const uint16_t *)pic->data[1];
139 const uint16_t *v = (const uint16_t *)pic->data[2];
140
141 const int sample_size = 6 * s->sample_factor_10;
142 const int sample_w = avctx->width / sample_size;
143
144 for (h = 0; h < avctx->height; h++) {
145 uint32_t val;
146 w = sample_w * sample_size;
147 s->pack_line_10(y, u, v, dst, w);
148
149 y += w;
150 u += w >> 1;
151 v += w >> 1;
152 dst += sample_w * 16 * s->sample_factor_10;
153
154 for (; w < avctx->width - 5; w += 6) {
155 WRITE_PIXELS(u, y, v);
156 WRITE_PIXELS(y, u, y);
157 WRITE_PIXELS(v, y, u);
158 WRITE_PIXELS(y, v, y);
159 }
160 if (w < avctx->width - 1) {
161 WRITE_PIXELS(u, y, v);
162
163 val = CLIP(*y++);
164 if (w == avctx->width - 2) {
165 AV_WL32(dst, val);
166 dst += 4;
167 }
168 }
169 if (w < avctx->width - 3) {
170 val |= (CLIP(*u++) << 10) | (CLIP(*y++) << 20);
171 AV_WL32(dst, val);
172 dst += 4;
173
174 val = CLIP(*v++) | (CLIP(*y++) << 10);
175 AV_WL32(dst, val);
176 dst += 4;
177 }
178
179 memset(dst, 0, line_padding);
180 dst += line_padding;
181 y += pic->linesize[0] / 2 - avctx->width;
182 u += pic->linesize[1] / 2 - avctx->width / 2;
183 v += pic->linesize[2] / 2 - avctx->width / 2;
184 }
185 } else if(pic->format == AV_PIX_FMT_YUV422P) {
186 const uint8_t *y = pic->data[0];
187 const uint8_t *u = pic->data[1];
188 const uint8_t *v = pic->data[2];
189
190 const int sample_size = 12 * s->sample_factor_8;
191 const int sample_w = avctx->width / sample_size;
192
193 for (h = 0; h < avctx->height; h++) {
194 uint32_t val;
195 w = sample_w * sample_size;
196 s->pack_line_8(y, u, v, dst, w);
197
198 y += w;
199 u += w >> 1;
200 v += w >> 1;
201 dst += sample_w * 32 * s->sample_factor_8;
202
203 for (; w < avctx->width - 5; w += 6) {
204 WRITE_PIXELS8(u, y, v);
205 WRITE_PIXELS8(y, u, y);
206 WRITE_PIXELS8(v, y, u);
207 WRITE_PIXELS8(y, v, y);
208 }
209 if (w < avctx->width - 1) {
210 WRITE_PIXELS8(u, y, v);
211
212 val = CLIP8(*y++) << 2;
213 if (w == avctx->width - 2) {
214 AV_WL32(dst, val);
215 dst += 4;
216 }
217 }
218 if (w < avctx->width - 3) {
219 val |= (CLIP8(*u++) << 12) | (CLIP8(*y++) << 22);
220 AV_WL32(dst, val);
221 dst += 4;
222
223 val = (CLIP8(*v++) << 2) | (CLIP8(*y++) << 12);
224 AV_WL32(dst, val);
225 dst += 4;
226 }
227 memset(dst, 0, line_padding);
228 dst += line_padding;
229
230 y += pic->linesize[0] - avctx->width;
231 u += pic->linesize[1] - avctx->width / 2;
232 v += pic->linesize[2] - avctx->width / 2;
233 }
234 }
235
236 pkt->flags |= AV_PKT_FLAG_KEY;
237 *got_packet = 1;
238 return 0;
239}
240
241AVCodec ff_v210_encoder = {
242 .name = "v210",
243 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
244 .type = AVMEDIA_TYPE_VIDEO,
245 .id = AV_CODEC_ID_V210,
246 .priv_data_size = sizeof(V210EncContext),
247 .init = encode_init,
248 .encode2 = encode_frame,
249 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV422P, AV_PIX_FMT_NONE },
250};
251
generated by cgit at 2024-05-18 01:37:19 (GMT)