FFmpeg
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 #include "libavutil/intreadwrite.h"
31 
32 #define READ_PIXELS(a, b, c) \
33  do { \
34  val = av_le2ne32(*src++); \
35  *a++ = val & 0x3FF; \
36  *b++ = (val >> 10) & 0x3FF; \
37  *c++ = (val >> 20) & 0x3FF; \
38  } while (0)
39 
40 static void v210_planar_unpack_c(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
41 {
42  uint32_t val;
43  int i;
44 
45  for( i = 0; i < width-5; i += 6 ){
46  READ_PIXELS(u, y, v);
47  READ_PIXELS(y, u, y);
48  READ_PIXELS(v, y, u);
49  READ_PIXELS(y, v, y);
50  }
51 }
52 
54 {
56  if (ARCH_X86)
58 }
59 
61 {
62  V210DecContext *s = avctx->priv_data;
63 
65  avctx->bits_per_raw_sample = 10;
66 
67  s->aligned_input = 0;
68  ff_v210dec_init(s);
69 
70  return 0;
71 }
72 
73 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
74  AVPacket *avpkt)
75 {
76  V210DecContext *s = avctx->priv_data;
77 
78  int h, w, ret, stride, aligned_input;
79  AVFrame *pic = data;
80  const uint8_t *psrc = avpkt->data;
81  uint16_t *y, *u, *v;
82 
83  if (s->custom_stride )
84  stride = s->custom_stride;
85  else {
86  int aligned_width = ((avctx->width + 47) / 48) * 48;
87  stride = aligned_width * 8 / 3;
88  }
89 
90  if (avpkt->size < stride * avctx->height) {
91  if ((((avctx->width + 23) / 24) * 24 * 8) / 3 * avctx->height == avpkt->size) {
92  stride = avpkt->size / avctx->height;
93  if (!s->stride_warning_shown)
94  av_log(avctx, AV_LOG_WARNING, "Broken v210 with too small padding (64 byte) detected\n");
95  s->stride_warning_shown = 1;
96  } else {
97  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
98  return AVERROR_INVALIDDATA;
99  }
100  }
101  if ( avctx->codec_tag == MKTAG('C', '2', '1', '0')
102  && avpkt->size > 64
103  && AV_RN32(psrc) == AV_RN32("INFO")
104  && avpkt->size - 64 >= stride * avctx->height)
105  psrc += 64;
106 
107  aligned_input = !((uintptr_t)psrc & 0x1f) && !(stride & 0x1f);
108  if (aligned_input != s->aligned_input) {
109  s->aligned_input = aligned_input;
110  ff_v210dec_init(s);
111  }
112 
113  if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
114  return ret;
115 
116  y = (uint16_t*)pic->data[0];
117  u = (uint16_t*)pic->data[1];
118  v = (uint16_t*)pic->data[2];
120  pic->key_frame = 1;
121 
122  for (h = 0; h < avctx->height; h++) {
123  const uint32_t *src = (const uint32_t*)psrc;
124  uint32_t val;
125 
126  w = (avctx->width / 12) * 12;
127  s->unpack_frame(src, y, u, v, w);
128 
129  y += w;
130  u += w >> 1;
131  v += w >> 1;
132  src += (w << 1) / 3;
133 
134  if (w < avctx->width - 5) {
135  READ_PIXELS(u, y, v);
136  READ_PIXELS(y, u, y);
137  READ_PIXELS(v, y, u);
138  READ_PIXELS(y, v, y);
139  w += 6;
140  }
141 
142  if (w < avctx->width - 1) {
143  READ_PIXELS(u, y, v);
144 
145  val = av_le2ne32(*src++);
146  *y++ = val & 0x3FF;
147  if (w < avctx->width - 3) {
148  *u++ = (val >> 10) & 0x3FF;
149  *y++ = (val >> 20) & 0x3FF;
150 
151  val = av_le2ne32(*src++);
152  *v++ = val & 0x3FF;
153  *y++ = (val >> 10) & 0x3FF;
154  }
155  }
156 
157  psrc += stride;
158  y += pic->linesize[0] / 2 - avctx->width + (avctx->width & 1);
159  u += pic->linesize[1] / 2 - avctx->width / 2;
160  v += pic->linesize[2] / 2 - avctx->width / 2;
161  }
162 
163  if (avctx->field_order > AV_FIELD_PROGRESSIVE) {
164  /* we have interlaced material flagged in container */
165  pic->interlaced_frame = 1;
166  if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
167  pic->top_field_first = 1;
168  }
169 
170  *got_frame = 1;
171 
172  return avpkt->size;
173 }
174 
175 #define V210DEC_FLAGS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
176 static const AVOption v210dec_options[] = {
177  {"custom_stride", "Custom V210 stride", offsetof(V210DecContext, custom_stride), AV_OPT_TYPE_INT,
178  {.i64 = 0}, INT_MIN, INT_MAX, V210DEC_FLAGS},
179  {NULL}
180 };
181 
182 static const AVClass v210dec_class = {
183  .class_name = "V210 Decoder",
184  .item_name = av_default_item_name,
185  .option = v210dec_options,
186  .version = LIBAVUTIL_VERSION_INT,
187 };
188 
190  .name = "v210",
191  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
192  .type = AVMEDIA_TYPE_VIDEO,
193  .id = AV_CODEC_ID_V210,
194  .priv_data_size = sizeof(V210DecContext),
195  .init = decode_init,
196  .decode = decode_frame,
197  .capabilities = AV_CODEC_CAP_DR1,
198  .priv_class = &v210dec_class,
199 };
int stride_warning_shown
Definition: v210dec.h:30
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:863
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static av_cold int decode_init(AVCodecContext *avctx)
Definition: v210dec.c:60
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
AVOption.
Definition: opt.h:246
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:100
av_cold void ff_v210dec_init(V210DecContext *s)
Definition: v210dec.c:53
#define READ_PIXELS(a, b, c)
Definition: v210dec.c:32
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
Memory handling functions.
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int size
Definition: avcodec.h:1481
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1778
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2799
#define av_le2ne32(x)
Definition: bswap.h:96
#define src
Definition: vp8dsp.c:254
AVCodec.
Definition: avcodec.h:3492
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
uint8_t
#define av_cold
Definition: attributes.h:82
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:252
uint8_t * data
Definition: avcodec.h:1480
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:442
#define av_log(a,...)
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
const char * name
Name of the codec implementation.
Definition: avcodec.h:3499
common internal API header
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:378
#define width
int width
picture width / height.
Definition: avcodec.h:1741
uint8_t w
Definition: llviddspenc.c:38
void(* unpack_frame)(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
Definition: v210dec.h:31
#define s(width, name)
Definition: cbs_vp9.c:257
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: v210dec.c:73
static const AVClass v210dec_class
Definition: v210dec.c:182
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
AVCodec ff_v210_decoder
Definition: v210dec.c:189
main external API structure.
Definition: avcodec.h:1568
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> (&#39;D&#39;<<24) + (&#39;C&#39;<<16) + (&#39;B&#39;<<8) + &#39;A&#39;).
Definition: avcodec.h:1593
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1968
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:30
#define AV_RN32(p)
Definition: intreadwrite.h:364
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:388
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:309
common internal api header.
void * priv_data
Definition: avcodec.h:1595
#define V210DEC_FLAGS
Definition: v210dec.c:175
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:447
static void v210_planar_unpack_c(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
Definition: v210dec.c:40
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:373
enum AVFieldOrder field_order
Field order.
Definition: avcodec.h:2225
#define stride
#define MKTAG(a, b, c, d)
Definition: common.h:366
This structure stores compressed data.
Definition: avcodec.h:1457
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:984
for(j=16;j >0;--j)
static const AVOption v210dec_options[]
Definition: v210dec.c:176