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v210dec.c
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1 /*
2  * V210 decoder
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 "internal.h"
26 #include "v210dec.h"
27 #include "libavutil/bswap.h"
28 #include "libavutil/internal.h"
29 #include "libavutil/mem.h"
30 
31 #define READ_PIXELS(a, b, c) \
32  do { \
33  val = av_le2ne32(*src++); \
34  *a++ = val & 0x3FF; \
35  *b++ = (val >> 10) & 0x3FF; \
36  *c++ = (val >> 20) & 0x3FF; \
37  } while (0)
38 
39 static void v210_planar_unpack_c(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
40 {
41  uint32_t val;
42  int i;
43 
44  for( i = 0; i < width-5; i += 6 ){
45  READ_PIXELS(u, y, v);
46  READ_PIXELS(y, u, y);
47  READ_PIXELS(v, y, u);
48  READ_PIXELS(y, v, y);
49  }
50 }
51 
53 {
54  V210DecContext *s = avctx->priv_data;
55 
57  avctx->bits_per_raw_sample = 10;
58 
60 
61  if (HAVE_MMX)
63 
64  return 0;
65 }
66 
67 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
68  AVPacket *avpkt)
69 {
70  V210DecContext *s = avctx->priv_data;
71 
72  int h, w, ret, stride, aligned_input;
73  AVFrame *pic = data;
74  const uint8_t *psrc = avpkt->data;
75  uint16_t *y, *u, *v;
76 
77  if (s->custom_stride )
78  stride = s->custom_stride;
79  else {
80  int aligned_width = ((avctx->width + 47) / 48) * 48;
81  stride = aligned_width * 8 / 3;
82  }
83 
84  if (avpkt->size < stride * avctx->height) {
85  if ((((avctx->width + 23) / 24) * 24 * 8) / 3 * avctx->height == avpkt->size) {
86  stride = avpkt->size / avctx->height;
87  if (!s->stride_warning_shown)
88  av_log(avctx, AV_LOG_WARNING, "Broken v210 with too small padding (64 byte) detected\n");
89  s->stride_warning_shown = 1;
90  } else {
91  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
92  return AVERROR_INVALIDDATA;
93  }
94  }
95 
96  aligned_input = !((uintptr_t)psrc & 0xf) && !(stride & 0xf);
97  if (aligned_input != s->aligned_input) {
98  s->aligned_input = aligned_input;
99  if (HAVE_MMX)
100  ff_v210_x86_init(s);
101  }
102 
103  if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
104  return ret;
105 
106  y = (uint16_t*)pic->data[0];
107  u = (uint16_t*)pic->data[1];
108  v = (uint16_t*)pic->data[2];
110  pic->key_frame = 1;
111 
112  for (h = 0; h < avctx->height; h++) {
113  const uint32_t *src = (const uint32_t*)psrc;
114  uint32_t val;
115 
116  w = (avctx->width / 6) * 6;
117  s->unpack_frame(src, y, u, v, w);
118 
119  y += w;
120  u += w >> 1;
121  v += w >> 1;
122  src += (w << 1) / 3;
123 
124  if (w < avctx->width - 1) {
125  READ_PIXELS(u, y, v);
126 
127  val = av_le2ne32(*src++);
128  *y++ = val & 0x3FF;
129  if (w < avctx->width - 3) {
130  *u++ = (val >> 10) & 0x3FF;
131  *y++ = (val >> 20) & 0x3FF;
132 
133  val = av_le2ne32(*src++);
134  *v++ = val & 0x3FF;
135  *y++ = (val >> 10) & 0x3FF;
136  }
137  }
138 
139  psrc += stride;
140  y += pic->linesize[0] / 2 - avctx->width + (avctx->width & 1);
141  u += pic->linesize[1] / 2 - avctx->width / 2;
142  v += pic->linesize[2] / 2 - avctx->width / 2;
143  }
144 
145  if (avctx->field_order > AV_FIELD_PROGRESSIVE) {
146  /* we have interlaced material flagged in container */
147  pic->interlaced_frame = 1;
148  if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
149  pic->top_field_first = 1;
150  }
151 
152  *got_frame = 1;
153 
154  return avpkt->size;
155 }
156 
157 #define V210DEC_FLAGS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
158 static const AVOption v210dec_options[] = {
159  {"custom_stride", "Custom V210 stride", offsetof(V210DecContext, custom_stride), AV_OPT_TYPE_INT,
160  {.i64 = 0}, INT_MIN, INT_MAX, V210DEC_FLAGS},
161  {NULL}
162 };
163 
164 static const AVClass v210dec_class = {
165  "V210 Decoder",
169 };
170 
172  .name = "v210",
173  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
174  .type = AVMEDIA_TYPE_VIDEO,
175  .id = AV_CODEC_ID_V210,
176  .priv_data_size = sizeof(V210DecContext),
177  .init = decode_init,
178  .decode = decode_frame,
179  .capabilities = AV_CODEC_CAP_DR1,
180  .priv_class = &v210dec_class,
181 };
int stride_warning_shown
Definition: v210dec.h:30
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:634
const char * s
Definition: avisynth_c.h:631
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
This structure describes decoded (raw) audio or video data.
Definition: frame.h:180
AVOption.
Definition: opt.h:245
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:70
memory handling functions
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static void v210_planar_unpack_c(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
Definition: v210dec.c:39
int size
Definition: avcodec.h:1578
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1870
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3042
#define av_le2ne32(x)
Definition: bswap.h:96
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: v210dec.c:67
AVCodec.
Definition: avcodec.h:3535
AVCodec ff_v210_decoder
Definition: v210dec.c:171
uint8_t
#define av_cold
Definition: attributes.h:82
static av_cold int decode_init(AVCodecContext *avctx)
Definition: v210dec.c:52
#define READ_PIXELS(a, b, c)
Definition: v210dec.c:31
uint8_t * data
Definition: avcodec.h:1577
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:314
#define av_log(a,...)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
av_default_item_name
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
#define V210DEC_FLAGS
Definition: v210dec.c:157
const char * name
Name of the codec implementation.
Definition: avcodec.h:3542
common internal API header
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:254
int width
picture width / height.
Definition: avcodec.h:1829
#define width
#define src
Definition: vp9dsp.c:530
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:211
main external API structure.
Definition: avcodec.h:1642
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: utils.c:928
int aligned_input
Definition: v210dec.h:29
Describe the class of an AVClass context structure.
Definition: log.h:67
int custom_stride
Definition: v210dec.h:28
byte swapping routines
void ff_v210_x86_init(V210DecContext *s)
Definition: v210-init.c:28
#define u(width,...)
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:339
static const AVClass v210dec_class
Definition: v210dec.c:164
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:194
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:722
static const AVOption v210dec_options[]
Definition: v210dec.c:158
common internal api header.
void * priv_data
Definition: avcodec.h:1684
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:319
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:249
enum AVFieldOrder field_order
Field order.
Definition: avcodec.h:2400
#define stride
This structure stores compressed data.
Definition: avcodec.h:1554
void(* unpack_frame)(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
Definition: v210dec.h:31
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:953
for(j=16;j >0;--j)