FFmpeg  4.3
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 #include "thread.h"
32 
33 #define READ_PIXELS(a, b, c) \
34  do { \
35  val = av_le2ne32(*src++); \
36  *a++ = val & 0x3FF; \
37  *b++ = (val >> 10) & 0x3FF; \
38  *c++ = (val >> 20) & 0x3FF; \
39  } while (0)
40 
41 typedef struct ThreadData {
42  AVFrame *frame;
44  int stride;
45 } ThreadData;
46 
47 static void v210_planar_unpack_c(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
48 {
49  uint32_t val;
50  int i;
51 
52  for( i = 0; i < width-5; i += 6 ){
53  READ_PIXELS(u, y, v);
54  READ_PIXELS(y, u, y);
55  READ_PIXELS(v, y, u);
56  READ_PIXELS(y, v, y);
57  }
58 }
59 
61 {
62  s->unpack_frame = v210_planar_unpack_c;
63  if (ARCH_X86)
65 }
66 
68 {
69  V210DecContext *s = avctx->priv_data;
70 
72  avctx->bits_per_raw_sample = 10;
73 
74  s->thread_count = av_clip(avctx->thread_count, 1, avctx->height/4);
75  s->aligned_input = 0;
77 
78  return 0;
79 }
80 
81 static int v210_decode_slice(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
82 {
83  V210DecContext *s = avctx->priv_data;
84  int h, w;
85  ThreadData *td = arg;
86  AVFrame *frame = td->frame;
87  int stride = td->stride;
88  int slice_start = (avctx->height * jobnr) / s->thread_count;
89  int slice_end = (avctx->height * (jobnr+1)) / s->thread_count;
90  uint8_t *psrc = td->buf + stride * slice_start;
91  uint16_t *y, *u, *v;
92 
93  y = (uint16_t*)frame->data[0] + slice_start * frame->linesize[0] / 2;
94  u = (uint16_t*)frame->data[1] + slice_start * frame->linesize[1] / 2;
95  v = (uint16_t*)frame->data[2] + slice_start * frame->linesize[2] / 2;
96  for (h = slice_start; h < slice_end; h++) {
97  const uint32_t *src = (const uint32_t*)psrc;
98  uint32_t val;
99 
100  w = (avctx->width / 12) * 12;
101  s->unpack_frame(src, y, u, v, w);
102 
103  y += w;
104  u += w >> 1;
105  v += w >> 1;
106  src += (w << 1) / 3;
107 
108  if (w < avctx->width - 5) {
109  READ_PIXELS(u, y, v);
110  READ_PIXELS(y, u, y);
111  READ_PIXELS(v, y, u);
112  READ_PIXELS(y, v, y);
113  w += 6;
114  }
115 
116  if (w < avctx->width - 1) {
117  READ_PIXELS(u, y, v);
118 
119  val = av_le2ne32(*src++);
120  *y++ = val & 0x3FF;
121  if (w < avctx->width - 3) {
122  *u++ = (val >> 10) & 0x3FF;
123  *y++ = (val >> 20) & 0x3FF;
124 
125  val = av_le2ne32(*src++);
126  *v++ = val & 0x3FF;
127  *y++ = (val >> 10) & 0x3FF;
128  }
129  }
130 
131  psrc += stride;
132  y += frame->linesize[0] / 2 - avctx->width + (avctx->width & 1);
133  u += frame->linesize[1] / 2 - avctx->width / 2;
134  v += frame->linesize[2] / 2 - avctx->width / 2;
135  }
136 
137  return 0;
138 }
139 
140 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
141  AVPacket *avpkt)
142 {
143  V210DecContext *s = avctx->priv_data;
144  ThreadData td;
145  int ret, stride, aligned_input;
146  ThreadFrame frame = { .f = data };
147  AVFrame *pic = data;
148  const uint8_t *psrc = avpkt->data;
149 
150  if (s->custom_stride )
151  stride = s->custom_stride;
152  else {
153  int aligned_width = ((avctx->width + 47) / 48) * 48;
154  stride = aligned_width * 8 / 3;
155  }
156 
157  if (avpkt->size < stride * avctx->height) {
158  if ((((avctx->width + 23) / 24) * 24 * 8) / 3 * avctx->height == avpkt->size) {
159  stride = avpkt->size / avctx->height;
160  if (!s->stride_warning_shown)
161  av_log(avctx, AV_LOG_WARNING, "Broken v210 with too small padding (64 byte) detected\n");
162  s->stride_warning_shown = 1;
163  } else {
164  av_log(avctx, AV_LOG_ERROR, "packet too small\n");
165  return AVERROR_INVALIDDATA;
166  }
167  }
168  td.stride = stride;
169  if ( avctx->codec_tag == MKTAG('C', '2', '1', '0')
170  && avpkt->size > 64
171  && AV_RN32(psrc) == AV_RN32("INFO")
172  && avpkt->size - 64 >= stride * avctx->height)
173  psrc += 64;
174 
175  aligned_input = !((uintptr_t)psrc & 0x1f) && !(stride & 0x1f);
176  if (aligned_input != s->aligned_input) {
177  s->aligned_input = aligned_input;
179  }
180 
181  if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
182  return ret;
183 
185  pic->key_frame = 1;
186 
187  td.buf = (uint8_t*)psrc;
188  td.frame = pic;
189  avctx->execute2(avctx, v210_decode_slice, &td, NULL, s->thread_count);
190 
191  if (avctx->field_order > AV_FIELD_PROGRESSIVE) {
192  /* we have interlaced material flagged in container */
193  pic->interlaced_frame = 1;
194  if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
195  pic->top_field_first = 1;
196  }
197 
198  *got_frame = 1;
199 
200  return avpkt->size;
201 }
202 
203 #define V210DEC_FLAGS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
204 static const AVOption v210dec_options[] = {
205  {"custom_stride", "Custom V210 stride", offsetof(V210DecContext, custom_stride), AV_OPT_TYPE_INT,
206  {.i64 = 0}, INT_MIN, INT_MAX, V210DEC_FLAGS},
207  {NULL}
208 };
209 
210 static const AVClass v210dec_class = {
211  .class_name = "V210 Decoder",
212  .item_name = av_default_item_name,
213  .option = v210dec_options,
214  .version = LIBAVUTIL_VERSION_INT,
215 };
216 
218  .name = "v210",
219  .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
220  .type = AVMEDIA_TYPE_VIDEO,
221  .id = AV_CODEC_ID_V210,
222  .priv_data_size = sizeof(V210DecContext),
223  .init = decode_init,
224  .decode = decode_frame,
225  .capabilities = AV_CODEC_CAP_DR1 |
228  .priv_class = &v210dec_class,
229 };
AVCodec
AVCodec.
Definition: codec.h:190
v210dec_options
static const AVOption v210dec_options[]
Definition: v210dec.c:204
stride
int stride
Definition: mace.c:144
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
td
#define td
Definition: regdef.h:70
ARCH_X86
#define ARCH_X86
Definition: config.h:38
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
v210_planar_unpack_c
static void v210_planar_unpack_c(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
Definition: v210dec.c:47
u
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:262
MKTAG
#define MKTAG(a, b, c, d)
Definition: common.h:406
decode_init
static av_cold int decode_init(AVCodecContext *avctx)
Definition: v210dec.c:67
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:300
ThreadData::stride
int stride
Definition: v210dec.c:44
internal.h
AVPacket::data
uint8_t * data
Definition: packet.h:355
AVCodecContext::field_order
enum AVFieldOrder field_order
Field order.
Definition: avcodec.h:1183
AVFrame::top_field_first
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:452
AVOption
AVOption.
Definition: opt.h:246
READ_PIXELS
#define READ_PIXELS(a, b, c)
Definition: v210dec.c:33
data
const char data[16]
Definition: mxf.c:91
ThreadData::frame
AVFrame * frame
Definition: dsddec.c:68
thread.h
ff_v210dec_init
av_cold void ff_v210dec_init(V210DecContext *s)
Definition: v210dec.c:60
AV_FIELD_TT
@ AV_FIELD_TT
Definition: codec_par.h:39
AVCodecContext::thread_count
int thread_count
thread count is used to decide how many independent tasks should be passed to execute()
Definition: avcodec.h:1785
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:378
val
static double val(void *priv, double ch)
Definition: aeval.c:76
AV_FIELD_TB
@ AV_FIELD_TB
Definition: codec_par.h:41
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
av_cold
#define av_cold
Definition: attributes.h:90
decode
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
width
#define width
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:257
slice_end
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2040
AVCodecContext::bits_per_raw_sample
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:1757
V210DecContext
Definition: v210dec.h:26
arg
const char * arg
Definition: jacosubdec.c:66
AV_CODEC_CAP_FRAME_THREADS
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: codec.h:106
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
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:235
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
AV_RN32
#define AV_RN32(p)
Definition: intreadwrite.h:364
src
#define src
Definition: vp8dsp.c:254
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:398
decode_frame
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: v210dec.c:140
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:383
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:50
AVPacket::size
int size
Definition: packet.h:356
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:186
AV_CODEC_ID_V210
@ AV_CODEC_ID_V210
Definition: codec_id.h:176
ff_v210_decoder
AVCodec ff_v210_decoder
Definition: v210dec.c:217
AV_CODEC_CAP_SLICE_THREADS
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: codec.h:110
v210dec_class
static const AVClass v210dec_class
Definition: v210dec.c:210
AVFrame::interlaced_frame
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:447
ThreadData::buf
uint8_t * buf
Definition: v210dec.c:43
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
internal.h
ThreadData
Used for passing data between threads.
Definition: dsddec.c:67
av_le2ne32
#define av_le2ne32(x)
Definition: bswap.h:96
uint8_t
uint8_t
Definition: audio_convert.c:194
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:197
AVCodecContext::height
int height
Definition: avcodec.h:699
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:736
avcodec.h
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:72
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
w
FFmpeg Automated Testing Environment ************************************Introduction Using FATE from your FFmpeg source directory Submitting the results to the FFmpeg result aggregation server Uploading new samples to the fate suite FATE makefile targets and variables Makefile targets Makefile variables Examples Introduction **************FATE is an extended regression suite on the client side and a means for results aggregation and presentation on the server side The first part of this document explains how you can use FATE from your FFmpeg source directory to test your ffmpeg binary The second part describes how you can run FATE to submit the results to FFmpeg’s FATE server In any way you can have a look at the publicly viewable FATE results by visiting this as it can be seen if some test on some platform broke with their recent contribution This usually happens on the platforms the developers could not test on The second part of this document describes how you can run FATE to submit your results to FFmpeg’s FATE server If you want to submit your results be sure to check that your combination of OS and compiler is not already listed on the above mentioned website In the third part you can find a comprehensive listing of FATE makefile targets and variables Using FATE from your FFmpeg source directory **********************************************If you want to run FATE on your machine you need to have the samples in place You can get the samples via the build target fate rsync Use this command from the top level source this will cause FATE to fail NOTE To use a custom wrapper to run the pass ‘ target exec’ to ‘configure’ or set the TARGET_EXEC Make variable Submitting the results to the FFmpeg result aggregation server ****************************************************************To submit your results to the server you should run fate through the shell script ‘tests fate sh’ from the FFmpeg sources This script needs to be invoked with a configuration file as its first argument tests fate sh path to fate_config A configuration file template with comments describing the individual configuration variables can be found at ‘doc fate_config sh template’ Create a configuration that suits your based on the configuration template The ‘slot’ configuration variable can be any string that is not yet but it is suggested that you name it adhering to the following pattern ‘ARCH OS COMPILER COMPILER VERSION’ The configuration file itself will be sourced in a shell therefore all shell features may be used This enables you to setup the environment as you need it for your build For your first test runs the ‘fate_recv’ variable should be empty or commented out This will run everything as normal except that it will omit the submission of the results to the server The following files should be present in $workdir as specified in the configuration it may help to try out the ‘ssh’ command with one or more ‘ v’ options You should get detailed output concerning your SSH configuration and the authentication process The only thing left is to automate the execution of the fate sh script and the synchronisation of the samples directory Uploading new samples to the fate suite *****************************************If you need a sample uploaded send a mail to samples request This is for developers who have an account on the fate suite server If you upload new please make sure they are as small as space on each network bandwidth and so on benefit from smaller test cases Also keep in mind older checkouts use existing sample that means in practice generally do not remove or overwrite files as it likely would break older checkouts or releases Also all needed samples for a commit should be ideally before the push If you need an account for frequently uploading samples or you wish to help others by doing that send a mail to ffmpeg devel rsync vauL Duo ug o o w
Definition: fate.txt:150
AVCodecContext
main external API structure.
Definition: avcodec.h:526
ThreadFrame
Definition: thread.h:34
V210DEC_FLAGS
#define V210DEC_FLAGS
Definition: v210dec.c:203
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:223
ff_v210_x86_init
void ff_v210_x86_init(V210DecContext *s)
Definition: v210-init.c:30
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
mem.h
AV_FIELD_PROGRESSIVE
@ AV_FIELD_PROGRESSIVE
Definition: codec_par.h:38
AVCodecContext::codec_tag
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:551
AVPacket
This structure stores compressed data.
Definition: packet.h:332
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:553
v210_decode_slice
static int v210_decode_slice(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
Definition: v210dec.c:81
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:699
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
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:1845
v210dec.h