FFmpeg
Data Structures | Macros | Functions | Variables
v210dec.c File Reference
#include "avcodec.h"
#include "internal.h"
#include "v210dec.h"
#include "libavutil/bswap.h"
#include "libavutil/internal.h"
#include "libavutil/mem.h"
#include "libavutil/intreadwrite.h"
#include "thread.h"

Go to the source code of this file.

Data Structures

struct  ThreadData
 Used for passing data between threads. More...
 

Macros

#define READ_PIXELS(a, b, c)
 
#define V210DEC_FLAGS   AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
 

Functions

static void v210_planar_unpack_c (const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
 
av_cold void ff_v210dec_init (V210DecContext *s)
 
static av_cold int decode_init (AVCodecContext *avctx)
 
static int v210_decode_slice (AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
 
static int decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
 

Variables

static const AVOption v210dec_options []
 
static const AVClass v210dec_class
 
AVCodec ff_v210_decoder
 

Macro Definition Documentation

#define READ_PIXELS (   a,
  b,
  c 
)
Value:
do { \
val = av_le2ne32(*src++); \
*a++ = val & 0x3FF; \
*b++ = (val >> 10) & 0x3FF; \
*c++ = (val >> 20) & 0x3FF; \
} while (0)
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:36
av_le2ne32
#define av_le2ne32(x)
Definition: bswap.h:96
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
src
#define src
Definition: vp8dsp.c:254
b
#define b
Definition: input.c:41
val
static double val(void *priv, double ch)
Definition: aeval.c:76

Definition at line 33 of file v210dec.c.

Referenced by v210_decode_slice(), and v210_planar_unpack_c().

#define V210DEC_FLAGS   AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM

Definition at line 203 of file v210dec.c.

Function Documentation

static void v210_planar_unpack_c ( const uint32_t *  src,
uint16_t *  y,
uint16_t *  u,
uint16_t *  v,
int  width 
)
static

Definition at line 47 of file v210dec.c.

Referenced by ff_v210dec_init().

av_cold void ff_v210dec_init ( V210DecContext *  s)

Definition at line 60 of file v210dec.c.

Referenced by checkasm_check_v210dec(), decode_frame(), and decode_init().

static av_cold int decode_init ( AVCodecContext *  avctx)
static

Definition at line 67 of file v210dec.c.

static int v210_decode_slice ( AVCodecContext *  avctx,
void *  arg,
int  jobnr,
int  threadnr 
)
static

Definition at line 81 of file v210dec.c.

Referenced by decode_frame().

static int decode_frame ( AVCodecContext *  avctx,
void *  data,
int *  got_frame,
AVPacket *  avpkt 
)
static

Definition at line 140 of file v210dec.c.

Variable Documentation

const AVOption v210dec_options[]
static
Initial value:
= {
{"custom_stride", "Custom V210 stride", 0x42, AV_OPT_TYPE_INT,
{.i64 = 0}, INT_MIN, INT_MAX, V210DEC_FLAGS},
{NULL}
}
NULL
#define NULL
Definition: coverity.c:32
AV_OPT_TYPE_INT
Definition: opt.h:223
V210DEC_FLAGS
#define V210DEC_FLAGS
Definition: v210dec.c:203

Definition at line 204 of file v210dec.c.

const AVClass v210dec_class
static
Initial value:
= {
.class_name = "V210 Decoder",
.item_name = av_default_item_name,
.option = v210dec_options,
.version = LIBAVUTIL_VERSION_INT,
}
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
v210dec_options
static const AVOption v210dec_options[]
Definition: v210dec.c:204

Definition at line 210 of file v210dec.c.

AVCodec ff_v210_decoder
Initial value:
= {
.name = "v210",
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_V210,
.priv_data_size = sizeof(V210DecContext),
.init = decode_init,
.decode = decode_frame,
.capabilities = AV_CODEC_CAP_DR1 |
AV_CODEC_CAP_SLICE_THREADS |
AV_CODEC_CAP_FRAME_THREADS,
.priv_class = &v210dec_class,
}
decode_init
static av_cold int decode_init(AVCodecContext *avctx)
Definition: v210dec.c:67
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
decode
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
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_CAP_FRAME_THREADS
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:461
decode_frame
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: v210dec.c:140
v210dec_class
static const AVClass v210dec_class
Definition: v210dec.c:210
AV_CODEC_CAP_SLICE_THREADS
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:465
AV_CODEC_ID_V210
Definition: codec_id.h:174
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:405

Definition at line 217 of file v210dec.c.

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