FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
v210enc.c
Go to the documentation of this file.
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 
50 static 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 
70 static 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 
86 {
87  V210EncContext *s = avctx->priv_data;
88 
89  if (avctx->width & 1) {
90  av_log(avctx, AV_LOG_ERROR, "v210 needs even width\n");
91  return AVERROR(EINVAL);
92  }
93 
94  avctx->coded_frame = av_frame_alloc();
95  if (!avctx->coded_frame)
96  return AVERROR(ENOMEM);
97 
99 
102 
103  if (ARCH_X86)
105 
106  return 0;
107 }
108 
110  const AVFrame *pic, int *got_packet)
111 {
112  V210EncContext *s = avctx->priv_data;
113  int aligned_width = ((avctx->width + 47) / 48) * 48;
114  int stride = aligned_width * 8 / 3;
115  int line_padding = stride - ((avctx->width * 8 + 11) / 12) * 4;
116  int h, w, ret;
117  uint8_t *dst;
118 
119  ret = ff_alloc_packet(pkt, avctx->height * stride);
120  if (ret < 0) {
121  av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
122  return ret;
123  }
124  dst = pkt->data;
125 
126  if (pic->format == AV_PIX_FMT_YUV422P10) {
127  const uint16_t *y = (const uint16_t *)pic->data[0];
128  const uint16_t *u = (const uint16_t *)pic->data[1];
129  const uint16_t *v = (const uint16_t *)pic->data[2];
130  for (h = 0; h < avctx->height; h++) {
131  uint32_t val;
132  w = (avctx->width / 6) * 6;
133  s->pack_line_10(y, u, v, dst, w);
134 
135  y += w;
136  u += w >> 1;
137  v += w >> 1;
138  dst += (w / 6) * 16;
139  if (w < avctx->width - 1) {
140  WRITE_PIXELS(u, y, v);
141 
142  val = CLIP(*y++);
143  if (w == avctx->width - 2) {
144  AV_WL32(dst, val);
145  dst += 4;
146  }
147  }
148  if (w < avctx->width - 3) {
149  val |= (CLIP(*u++) << 10) | (CLIP(*y++) << 20);
150  AV_WL32(dst, val);
151  dst += 4;
152 
153  val = CLIP(*v++) | (CLIP(*y++) << 10);
154  AV_WL32(dst, val);
155  dst += 4;
156  }
157 
158  memset(dst, 0, line_padding);
159  dst += line_padding;
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;
163  }
164  } else if(pic->format == AV_PIX_FMT_YUV422P) {
165  const uint8_t *y = pic->data[0];
166  const uint8_t *u = pic->data[1];
167  const uint8_t *v = pic->data[2];
168  for (h = 0; h < avctx->height; h++) {
169  uint32_t val;
170  w = (avctx->width / 12) * 12;
171  s->pack_line_8(y, u, v, dst, w);
172 
173  y += w;
174  u += w >> 1;
175  v += w >> 1;
176  dst += (w / 12) * 32;
177 
178  for (; w < avctx->width - 5; w += 6) {
179  WRITE_PIXELS8(u, y, v);
180  WRITE_PIXELS8(y, u, y);
181  WRITE_PIXELS8(v, y, u);
182  WRITE_PIXELS8(y, v, y);
183  }
184  if (w < avctx->width - 1) {
185  WRITE_PIXELS8(u, y, v);
186 
187  val = CLIP8(*y++) << 2;
188  if (w == avctx->width - 2) {
189  AV_WL32(dst, val);
190  dst += 4;
191  }
192  }
193  if (w < avctx->width - 3) {
194  val |= (CLIP8(*u++) << 12) | (CLIP8(*y++) << 22);
195  AV_WL32(dst, val);
196  dst += 4;
197 
198  val = (CLIP8(*v++) << 2) | (CLIP8(*y++) << 12);
199  AV_WL32(dst, val);
200  dst += 4;
201  }
202  memset(dst, 0, line_padding);
203  dst += line_padding;
204 
205  y += pic->linesize[0] - avctx->width;
206  u += pic->linesize[1] - avctx->width / 2;
207  v += pic->linesize[2] - avctx->width / 2;
208  }
209  }
210 
211  pkt->flags |= AV_PKT_FLAG_KEY;
212  *got_packet = 1;
213  return 0;
214 }
215 
217 {
218  av_freep(&avctx->coded_frame);
219 
220  return 0;
221 }
222 
224  .name = "v210",
225  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
226  .type = AVMEDIA_TYPE_VIDEO,
227  .id = AV_CODEC_ID_V210,
228  .priv_data_size = sizeof(V210EncContext),
229  .init = encode_init,
230  .encode2 = encode_frame,
231  .close = encode_close,
233 };