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Data Structures | Macros | Functions | Variables
pixlet.c File Reference
#include <stdint.h>
#include "libavutil/imgutils.h"
#include "libavutil/intmath.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "bytestream.h"
#include "get_bits.h"
#include "internal.h"
#include "thread.h"
#include "unary.h"

Go to the source code of this file.

Data Structures

struct  SubBand
 
struct  PixletContext
 

Macros

#define NB_LEVELS   4
 
#define PIXLET_MAGIC   0xDEADBEEF
 
#define H   0
 
#define V   1
 

Functions

static av_cold int pixlet_init (AVCodecContext *avctx)
 
static void free_buffers (AVCodecContext *avctx)
 
static av_cold int pixlet_close (AVCodecContext *avctx)
 
static int init_decoder (AVCodecContext *avctx)
 
static int read_low_coeffs (AVCodecContext *avctx, int16_t *dst, int size, int width, ptrdiff_t stride)
 
static int read_high_coeffs (AVCodecContext *avctx, uint8_t *src, int16_t *dst, int size, int c, int a, int d, int width, ptrdiff_t stride)
 
static int read_highpass (AVCodecContext *avctx, uint8_t *ptr, int plane, AVFrame *frame)
 
static void lowpass_prediction (int16_t *dst, int16_t *pred, int width, int height, ptrdiff_t stride)
 
static void filterfn (int16_t *dest, int16_t *tmp, unsigned size, int64_t scale)
 
static void reconstruction (AVCodecContext *avctx, int16_t *dest, unsigned width, unsigned height, ptrdiff_t stride, int64_t *scaling_h, int64_t *scaling_v)
 
static void postprocess_luma (AVFrame *frame, int w, int h, int depth)
 
static void postprocess_chroma (AVFrame *frame, int w, int h, int depth)
 
static int decode_plane (AVCodecContext *avctx, int plane, AVPacket *avpkt, AVFrame *frame)
 
static int pixlet_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
 

Variables

AVCodec ff_pixlet_decoder
 

Macro Definition Documentation

#define NB_LEVELS   4

Definition at line 35 of file pixlet.c.

Referenced by init_decoder(), pixlet_decode_frame(), and reconstruction().

#define PIXLET_MAGIC   0xDEADBEEF

Definition at line 37 of file pixlet.c.

Referenced by read_highpass().

#define H   0
#define V   1

Definition at line 40 of file pixlet.c.

Referenced by decode_plane().

Function Documentation

static av_cold int pixlet_init ( AVCodecContext avctx)
static

Definition at line 64 of file pixlet.c.

static void free_buffers ( AVCodecContext avctx)
static

Definition at line 71 of file pixlet.c.

Referenced by pixlet_close(), and pixlet_decode_frame().

static av_cold int pixlet_close ( AVCodecContext avctx)
static

Definition at line 80 of file pixlet.c.

static int init_decoder ( AVCodecContext avctx)
static

Definition at line 89 of file pixlet.c.

Referenced by pixlet_decode_frame().

static int read_low_coeffs ( AVCodecContext avctx,
int16_t *  dst,
int  size,
int  width,
ptrdiff_t  stride 
)
static

Definition at line 124 of file pixlet.c.

Referenced by decode_plane().

static int read_high_coeffs ( AVCodecContext avctx,
uint8_t src,
int16_t *  dst,
int  size,
int  c,
int  a,
int  d,
int  width,
ptrdiff_t  stride 
)
static

Definition at line 199 of file pixlet.c.

Referenced by read_highpass().

static int read_highpass ( AVCodecContext avctx,
uint8_t ptr,
int  plane,
AVFrame frame 
)
static

Definition at line 314 of file pixlet.c.

Referenced by decode_plane().

static void lowpass_prediction ( int16_t *  dst,
int16_t *  pred,
int  width,
int  height,
ptrdiff_t  stride 
)
static

Definition at line 357 of file pixlet.c.

Referenced by decode_plane().

static void filterfn ( int16_t *  dest,
int16_t *  tmp,
unsigned  size,
int64_t  scale 
)
static

Definition at line 377 of file pixlet.c.

Referenced by reconstruction().

static void reconstruction ( AVCodecContext avctx,
int16_t *  dest,
unsigned  width,
unsigned  height,
ptrdiff_t  stride,
int64_t *  scaling_h,
int64_t *  scaling_v 
)
static

Definition at line 422 of file pixlet.c.

Referenced by decode_plane().

static void postprocess_luma ( AVFrame frame,
int  w,
int  h,
int  depth 
)
static

Definition at line 465 of file pixlet.c.

Referenced by pixlet_decode_frame().

static void postprocess_chroma ( AVFrame frame,
int  w,
int  h,
int  depth 
)
static

Definition at line 487 of file pixlet.c.

Referenced by pixlet_decode_frame().

static int decode_plane ( AVCodecContext avctx,
int  plane,
AVPacket avpkt,
AVFrame frame 
)
static

Definition at line 511 of file pixlet.c.

Referenced by pixlet_decode_frame().

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

Definition at line 587 of file pixlet.c.

Variable Documentation

AVCodec ff_pixlet_decoder
Initial value:
= {
.name = "pixlet",
.long_name = NULL_IF_CONFIG_SMALL("Apple Pixlet"),
.init = pixlet_init,
.init_thread_copy = ONLY_IF_THREADS_ENABLED(pixlet_init_thread_copy),
.close = pixlet_close,
.priv_data_size = sizeof(PixletContext),
.capabilities = AV_CODEC_CAP_DR1 |
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
}
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:48
#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: internal.h:40
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1012
#define ONLY_IF_THREADS_ENABLED(x)
Define a function with only the non-default version specified.
Definition: internal.h:225
static av_cold int pixlet_init(AVCodecContext *avctx)
Definition: pixlet.c:64
static int pixlet_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: pixlet.c:587
static av_cold int pixlet_close(AVCodecContext *avctx)
Definition: pixlet.c:80
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:956

Definition at line 693 of file pixlet.c.