Imported Debian version 2.5.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / v210enc.c
CommitLineData
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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"
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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, ptrdiff_t width)
52{
53 uint32_t val;
54 int i;
55
56 /* unroll this to match the assembly */
57 for( i = 0; i < width-11; i += 12 ){
58 WRITE_PIXELS8(u, y, v);
59 WRITE_PIXELS8(y, u, y);
60 WRITE_PIXELS8(v, y, u);
61 WRITE_PIXELS8(y, v, y);
62 WRITE_PIXELS8(u, y, v);
63 WRITE_PIXELS8(y, u, y);
64 WRITE_PIXELS8(v, y, u);
65 WRITE_PIXELS8(y, v, y);
66 }
67}
68
69static void v210_planar_pack_10_c(const uint16_t *y, const uint16_t *u,
70 const uint16_t *v, uint8_t *dst, ptrdiff_t width)
71{
72 uint32_t val;
73 int i;
74
75 for( i = 0; i < width-5; i += 6 ){
76 WRITE_PIXELS(u, y, v);
77 WRITE_PIXELS(y, u, y);
78 WRITE_PIXELS(v, y, u);
79 WRITE_PIXELS(y, v, y);
80 }
81}
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82
83static av_cold int encode_init(AVCodecContext *avctx)
84{
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85 V210EncContext *s = avctx->priv_data;
86
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87 if (avctx->width & 1) {
88 av_log(avctx, AV_LOG_ERROR, "v210 needs even width\n");
89 return AVERROR(EINVAL);
90 }
91
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92 avctx->coded_frame = av_frame_alloc();
93 if (!avctx->coded_frame)
94 return AVERROR(ENOMEM);
95
96 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
97
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98 s->pack_line_8 = v210_planar_pack_8_c;
99 s->pack_line_10 = v210_planar_pack_10_c;
100
101 if (ARCH_X86)
102 ff_v210enc_init_x86(s);
103
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104 return 0;
105}
106
107static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
108 const AVFrame *pic, int *got_packet)
109{
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110 V210EncContext *s = avctx->priv_data;
111
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112 int aligned_width = ((avctx->width + 47) / 48) * 48;
113 int stride = aligned_width * 8 / 3;
114 int line_padding = stride - ((avctx->width * 8 + 11) / 12) * 4;
115 int h, w, ret;
f6fa7814 116 uint8_t *dst;
2ba45a60 117
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118 if ((ret = ff_alloc_packet(pkt, avctx->height * stride)) < 0) {
119 av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
2ba45a60 120 return ret;
f6fa7814 121 }
2ba45a60 122
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123 dst = pkt->data;
124
125 if (pic->format == AV_PIX_FMT_YUV422P10) {
126 const uint16_t *y = (const uint16_t*)pic->data[0];
127 const uint16_t *u = (const uint16_t*)pic->data[1];
128 const uint16_t *v = (const uint16_t*)pic->data[2];
129 for (h = 0; h < avctx->height; h++) {
130 uint32_t val;
131 w = (avctx->width / 6) * 6;
132 s->pack_line_10(y, u, v, dst, w);
133
134 y += w;
135 u += w >> 1;
136 v += w >> 1;
137 dst += (w / 6) * 16;
138 if (w < avctx->width - 1) {
139 WRITE_PIXELS(u, y, v);
140
141 val = CLIP(*y++);
142 if (w == avctx->width - 2) {
143 AV_WL32(dst, val);
144 dst += 4;
145 }
146 }
147 if (w < avctx->width - 3) {
148 val |= (CLIP(*u++) << 10) | (CLIP(*y++) << 20);
149 AV_WL32(dst, val);
150 dst += 4;
2ba45a60 151
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152 val = CLIP(*v++) | (CLIP(*y++) << 10);
153 AV_WL32(dst, val);
154 dst += 4;
155 }
2ba45a60 156
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157 memset(dst, 0, line_padding);
158 dst += line_padding;
2ba45a60 159
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160 y += pic->linesize[0] / 2 - avctx->width;
161 u += pic->linesize[1] / 2 - avctx->width / 2;
162 v += pic->linesize[2] / 2 - avctx->width / 2;
2ba45a60 163 }
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164 }
165 else if(pic->format == AV_PIX_FMT_YUV422P) {
166 const uint8_t *y = pic->data[0];
167 const uint8_t *u = pic->data[1];
168 const uint8_t *v = pic->data[2];
169 for (h = 0; h < avctx->height; h++) {
170 uint32_t val;
171 w = (avctx->width / 12) * 12;
172 s->pack_line_8(y, u, v, dst, w);
173
174 y += w;
175 u += w >> 1;
176 v += w >> 1;
177 dst += (w / 12) * 32;
178
179 for( ; w < avctx->width-5; w += 6 ){
180 WRITE_PIXELS8(u, y, v);
181 WRITE_PIXELS8(y, u, y);
182 WRITE_PIXELS8(v, y, u);
183 WRITE_PIXELS8(y, v, y);
184 }
185 if (w < avctx->width - 1) {
186 WRITE_PIXELS8(u, y, v);
187
188 val = CLIP8(*y++) << 2;
189 if (w == avctx->width - 2) {
190 AV_WL32(dst, val);
191 dst += 4;
192 }
193 }
2ba45a60 194 if (w < avctx->width - 3) {
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195 val |= (CLIP8(*u++) << 12) | (CLIP8(*y++) << 22);
196 AV_WL32(dst, val);
197 dst += 4;
2ba45a60 198
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199 val = (CLIP8(*v++) << 2) | (CLIP8(*y++) << 12);
200 AV_WL32(dst, val);
201 dst += 4;
2ba45a60 202 }
2ba45a60 203
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204 memset(dst, 0, line_padding);
205 dst += line_padding;
2ba45a60 206
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207 y += pic->linesize[0] - avctx->width;
208 u += pic->linesize[1] - avctx->width / 2;
209 v += pic->linesize[2] - avctx->width / 2;
210 }
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211 }
212
213 pkt->flags |= AV_PKT_FLAG_KEY;
214 *got_packet = 1;
215 return 0;
216}
217
218static av_cold int encode_close(AVCodecContext *avctx)
219{
220 av_freep(&avctx->coded_frame);
221
222 return 0;
223}
224
225AVCodec ff_v210_encoder = {
226 .name = "v210",
227 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
228 .type = AVMEDIA_TYPE_VIDEO,
229 .id = AV_CODEC_ID_V210,
f6fa7814 230 .priv_data_size = sizeof(V210EncContext),
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231 .init = encode_init,
232 .encode2 = encode_frame,
233 .close = encode_close,
f6fa7814 234 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV422P, AV_PIX_FMT_NONE },
2ba45a60 235};