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 "codec_internal.h"
26 #include "v210dec.h"
27 #include "v210dec_init.h"
28 #include "libavutil/bswap.h"
29 #include "libavutil/internal.h"
30 #include "libavutil/intreadwrite.h"
31 #include "thread.h"
32 
33 typedef struct ThreadData {
34  AVFrame *frame;
35  uint8_t *buf;
36  int stride;
37 } ThreadData;
38 
40 {
41  V210DecContext *s = avctx->priv_data;
42 
44  avctx->bits_per_raw_sample = 10;
45 
46  s->thread_count = av_clip(avctx->thread_count, 1, avctx->height/4);
47  s->aligned_input = 0;
49 
50  return 0;
51 }
52 
53 static int v210_decode_slice(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
54 {
55  V210DecContext *s = avctx->priv_data;
56  int h, w;
57  ThreadData *td = arg;
58  AVFrame *frame = td->frame;
59  int stride = td->stride;
60  int slice_start = (avctx->height * jobnr) / s->thread_count;
61  int slice_end = (avctx->height * (jobnr+1)) / s->thread_count;
62  uint8_t *psrc = td->buf + stride * slice_start;
63  uint16_t *y, *u, *v;
64 
65  y = (uint16_t*)frame->data[0] + slice_start * frame->linesize[0] / 2;
66  u = (uint16_t*)frame->data[1] + slice_start * frame->linesize[1] / 2;
67  v = (uint16_t*)frame->data[2] + slice_start * frame->linesize[2] / 2;
68  for (h = slice_start; h < slice_end; h++) {
69  const uint32_t *src = (const uint32_t*)psrc;
70  uint32_t val;
71 
72  w = (avctx->width / 12) * 12;
73  s->unpack_frame(src, y, u, v, w);
74 
75  y += w;
76  u += w >> 1;
77  v += w >> 1;
78  src += (w << 1) / 3;
79 
80  if (w < avctx->width - 5) {
81  READ_PIXELS(u, y, v);
82  READ_PIXELS(y, u, y);
83  READ_PIXELS(v, y, u);
84  READ_PIXELS(y, v, y);
85  w += 6;
86  }
87 
88  if (w < avctx->width - 1) {
89  READ_PIXELS(u, y, v);
90 
91  val = av_le2ne32(*src++);
92  *y++ = val & 0x3FF;
93  if (w < avctx->width - 3) {
94  *u++ = (val >> 10) & 0x3FF;
95  *y++ = (val >> 20) & 0x3FF;
96 
97  val = av_le2ne32(*src++);
98  *v++ = val & 0x3FF;
99  *y++ = (val >> 10) & 0x3FF;
100  }
101  }
102 
103  psrc += stride;
104  y += frame->linesize[0] / 2 - avctx->width + (avctx->width & 1);
105  u += frame->linesize[1] / 2 - avctx->width / 2;
106  v += frame->linesize[2] / 2 - avctx->width / 2;
107  }
108 
109  return 0;
110 }
111 
112 static int decode_frame(AVCodecContext *avctx, AVFrame *pic,
113  int *got_frame, AVPacket *avpkt)
114 {
115  V210DecContext *s = avctx->priv_data;
116  ThreadData td;
117  int ret, stride, aligned_input;
118  const uint8_t *psrc = avpkt->data;
119 
120  if (s->custom_stride )
121  stride = s->custom_stride;
122  else {
123  int aligned_width = ((avctx->width + 47) / 48) * 48;
124  stride = aligned_width * 8 / 3;
125  }
126 
127  if (avpkt->size < stride * avctx->height) {
128  if ((((avctx->width + 23) / 24) * 24 * 8) / 3 * avctx->height == avpkt->size) {
129  stride = avpkt->size / avctx->height;
130  if (!s->stride_warning_shown)
131  av_log(avctx, AV_LOG_WARNING, "Broken v210 with too small padding (64 byte) detected\n");
132  s->stride_warning_shown = 1;
133  } else {
134  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
135  return AVERROR_INVALIDDATA;
136  }
137  }
138  td.stride = stride;
139  if ( avctx->codec_tag == MKTAG('C', '2', '1', '0')
140  && avpkt->size > 64
141  && AV_RN32(psrc) == AV_RN32("INFO")
142  && avpkt->size - 64 >= stride * avctx->height)
143  psrc += 64;
144 
145  aligned_input = !((uintptr_t)psrc & 0x1f) && !(stride & 0x1f);
146  if (aligned_input != s->aligned_input) {
147  s->aligned_input = aligned_input;
149  }
150 
151  if ((ret = ff_thread_get_buffer(avctx, pic, 0)) < 0)
152  return ret;
153 
155  pic->key_frame = 1;
156 
157  td.buf = (uint8_t*)psrc;
158  td.frame = pic;
159  avctx->execute2(avctx, v210_decode_slice, &td, NULL, s->thread_count);
160 
161  if (avctx->field_order > AV_FIELD_PROGRESSIVE) {
162  /* we have interlaced material flagged in container */
163  pic->interlaced_frame = 1;
164  if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
165  pic->top_field_first = 1;
166  }
167 
168  *got_frame = 1;
169 
170  return avpkt->size;
171 }
172 
173 #define V210DEC_FLAGS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
174 static const AVOption v210dec_options[] = {
175  {"custom_stride", "Custom V210 stride", offsetof(V210DecContext, custom_stride), AV_OPT_TYPE_INT,
176  {.i64 = 0}, INT_MIN, INT_MAX, V210DEC_FLAGS},
177  {NULL}
178 };
179 
180 static const AVClass v210dec_class = {
181  .class_name = "V210 Decoder",
182  .item_name = av_default_item_name,
183  .option = v210dec_options,
184  .version = LIBAVUTIL_VERSION_INT,
185 };
186 
188  .p.name = "v210",
189  .p.long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
190  .p.type = AVMEDIA_TYPE_VIDEO,
191  .p.id = AV_CODEC_ID_V210,
192  .priv_data_size = sizeof(V210DecContext),
193  .init = decode_init,
195  .p.capabilities = AV_CODEC_CAP_DR1 |
198  .p.priv_class = &v210dec_class,
199  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
200 };
v210dec_options
static const AVOption v210dec_options[]
Definition: v210dec.c:174
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
td
#define td
Definition: regdef.h:70
av_clip
#define av_clip
Definition: common.h:95
u
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:264
decode_init
static av_cold int decode_init(AVCodecContext *avctx)
Definition: v210dec.c:39
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
ThreadData::stride
int stride
Definition: v210dec.c:36
w
uint8_t w
Definition: llviddspenc.c:38
AVPacket::data
uint8_t * data
Definition: packet.h:374
AVCodecContext::field_order
enum AVFieldOrder field_order
Field order.
Definition: avcodec.h:995
READ_PIXELS
#define READ_PIXELS(a, b, c)
Definition: v210dec_init.h:34
AVFrame::top_field_first
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:482
AVOption
AVOption.
Definition: opt.h:251
decode_frame
static int decode_frame(AVCodecContext *avctx, AVFrame *pic, int *got_frame, AVPacket *avpkt)
Definition: v210dec.c:112
FFCodec
Definition: codec_internal.h:112
ThreadData::frame
AVFrame * frame
Definition: dsddec.c:69
v210dec_init.h
thread.h
init
static int init
Definition: av_tx.c:47
AV_FIELD_TT
@ AV_FIELD_TT
Definition: codec_par.h:40
FFCodec::p
AVCodec p
The public AVCodec.
Definition: codec_internal.h:116
AVCodecContext::thread_count
int thread_count
thread count is used to decide how many independent tasks should be passed to execute()
Definition: avcodec.h:1463
ff_thread_get_buffer
the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before as well as code calling up to before the decode process starts Call have so the codec calls ff_thread_report set FF_CODEC_CAP_ALLOCATE_PROGRESS in AVCodec caps_internal and use ff_thread_get_buffer() to allocate frames. The frames must then be freed with ff_thread_release_buffer(). Otherwise decode directly into the user-supplied frames. Call ff_thread_report_progress() after some part of the current picture has decoded. A good place to put this is where draw_horiz_band() is called - add this if it isn 't called anywhere
AVFrame::key_frame
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:417
val
static double val(void *priv, double ch)
Definition: aeval.c:77
AV_FIELD_TB
@ AV_FIELD_TB
Definition: codec_par.h:42
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
width
#define width
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:254
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:256
ff_v210dec_init
static av_unused av_cold void ff_v210dec_init(V210DecContext *s)
Definition: v210dec_init.h:54
slice_end
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2013
AVCodecContext::bits_per_raw_sample
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:1448
V210DecContext
Definition: v210dec.h:26
arg
const char * arg
Definition: jacosubdec.c:67
AV_CODEC_CAP_FRAME_THREADS
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: codec.h:113
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:237
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
AV_RN32
#define AV_RN32(p)
Definition: intreadwrite.h:364
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:407
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:422
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
AVPacket::size
int size
Definition: packet.h:375
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:116
codec_internal.h
AV_CODEC_ID_V210
@ AV_CODEC_ID_V210
Definition: codec_id.h:177
AV_CODEC_CAP_SLICE_THREADS
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: codec.h:117
ff_v210_decoder
const FFCodec ff_v210_decoder
Definition: v210dec.c:187
v210dec_class
static const AVClass v210dec_class
Definition: v210dec.c:180
AVFrame::interlaced_frame
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:477
ThreadData::buf
uint8_t * buf
Definition: v210dec.c:35
internal.h
ThreadData
Used for passing data between threads.
Definition: dsddec.c:68
av_le2ne32
#define av_le2ne32(x)
Definition: bswap.h:96
FF_CODEC_CAP_INIT_THREADSAFE
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: codec_internal.h:31
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:203
AVCodecContext::height
int height
Definition: avcodec.h:562
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:599
avcodec.h
stride
#define stride
Definition: h264pred_template.c:537
ret
ret
Definition: filter_design.txt:187
bswap.h
AVClass::class_name
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:71
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
AVCodecContext
main external API structure.
Definition: avcodec.h:389
V210DEC_FLAGS
#define V210DEC_FLAGS
Definition: v210dec.c:173
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_FIELD_PROGRESSIVE
@ AV_FIELD_PROGRESSIVE
Definition: codec_par.h:39
AVCodecContext::codec_tag
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:414
AVPacket
This structure stores compressed data.
Definition: packet.h:351
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:416
v210_decode_slice
static int v210_decode_slice(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
Definition: v210dec.c:53
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:562
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
MKTAG
#define MKTAG(a, b, c, d)
Definition: macros.h:55
h
h
Definition: vp9dsp_template.c:2038
AVCodecContext::execute2
int(* execute2)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count)
The codec may call this to execute several independent things.
Definition: avcodec.h:1534
v210dec.h