hapenc.c File Reference

Hap encoder. More...

#include <stdint.h>
#include "snappy-c.h"
#include "libavutil/frame.h"
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "bytestream.h"
#include "hap.h"
#include "internal.h"
#include "texturedsp.h"

Go to the source code of this file.

Macros
#define	HAP_MAX_CHUNKS   64
#define	OFFSET(x)   offsetof(HapContext, x)
#define	FLAGS   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Enumerations
enum	HapHeaderLength { HAP_HDR_SHORT = 4, HAP_HDR_LONG = 8 }

Functions
static int	compress_texture (AVCodecContext *avctx, uint8_t *out, int out_length, const AVFrame *f)
static void	hap_write_section_header (PutByteContext *pbc, enum HapHeaderLength header_length, int section_length, enum HapSectionType section_type)
static int	hap_compress_frame (AVCodecContext *avctx, uint8_t *dst)
static int	hap_decode_instructions_length (HapContext *ctx)
static int	hap_header_length (HapContext *ctx)
static void	hap_write_frame_header (HapContext *ctx, uint8_t *dst, int frame_length)
static int	hap_encode (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
static av_cold int	hap_init (AVCodecContext *avctx)
static av_cold int	hap_close (AVCodecContext *avctx)

Variables
static const AVOption	options []
static const AVClass	hapenc_class
AVCodec	ff_hap_encoder

Detailed Description

Hap encoder.

Fourcc: Hap1, Hap5, HapY

https://github.com/Vidvox/hap/blob/master/documentation/HapVideoDRAFT.md

Definition in file hapenc.c.

Macro Definition Documentation

#define HAP_MAX_CHUNKS   64

Definition at line 46 of file hapenc.c.

Referenced by hap_init().

#define OFFSET

(

x

)

offsetof(HapContext, x)

Definition at line 331 of file hapenc.c.

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 332 of file hapenc.c.

Enumeration Type Documentation

enum HapHeaderLength

Enumerator
HAP_HDR_SHORT
HAP_HDR_LONG

Definition at line 48 of file hapenc.c.

Function Documentation

static int compress_texture ( AVCodecContext *  avctx, uint8_t *  out, int  out_length, const AVFrame *  f  )

static

Definition at line 55 of file hapenc.c.

Referenced by hap_encode().

static void hap_write_section_header ( PutByteContext *  pbc, enum HapHeaderLength  header_length, int  section_length, enum HapSectionType  section_type  )

static

Definition at line 75 of file hapenc.c.

Referenced by hap_write_frame_header().

static int hap_compress_frame ( AVCodecContext *  avctx, uint8_t *  dst  )

static

Definition at line 92 of file hapenc.c.

Referenced by hap_encode().

static int hap_decode_instructions_length ( HapContext *  ctx )

static

Definition at line 140 of file hapenc.c.

Referenced by hap_header_length(), and hap_write_frame_header().

static int hap_header_length ( HapContext *  ctx )

static

Definition at line 149 of file hapenc.c.

Referenced by hap_encode().

static void hap_write_frame_header ( HapContext *  ctx, uint8_t *  dst, int  frame_length  )

static

Definition at line 162 of file hapenc.c.

Referenced by hap_encode().

static int hap_encode ( AVCodecContext *  avctx, AVPacket *  pkt, const AVFrame *  frame, int *  got_packet  )

static

Definition at line 194 of file hapenc.c.

static av_cold int hap_init ( AVCodecContext *  avctx )

static

Definition at line 236 of file hapenc.c.

static av_cold int hap_close ( AVCodecContext *  avctx )

static

Definition at line 322 of file hapenc.c.

Variable Documentation

const AVOption options[]

static

Initial value:

= {
    { "format", NULL, OFFSET(opt_tex_fmt), AV_OPT_TYPE_INT, { .i64 = HAP_FMT_RGBDXT1 }, HAP_FMT_RGBDXT1, HAP_FMT_YCOCGDXT5, FLAGS, "format" },
        { "hap",       "Hap 1 (DXT1 textures)", 0, AV_OPT_TYPE_CONST, { .i64 = HAP_FMT_RGBDXT1   }, 0, 0, FLAGS, "format" },
        { "hap_alpha", "Hap Alpha (DXT5 textures)", 0, AV_OPT_TYPE_CONST, { .i64 = HAP_FMT_RGBADXT5  }, 0, 0, FLAGS, "format" },
        { "hap_q",     "Hap Q (DXT5-YCoCg textures)", 0, AV_OPT_TYPE_CONST, { .i64 = HAP_FMT_YCOCGDXT5 }, 0, 0, FLAGS, "format" },
    { "chunks", "chunk count", OFFSET(opt_chunk_count), AV_OPT_TYPE_INT, {.i64 = 1 }, 1, HAP_MAX_CHUNKS, FLAGS, },
    { "compressor", "second-stage compressor", OFFSET(opt_compressor), AV_OPT_TYPE_INT, { .i64 = HAP_COMP_SNAPPY }, HAP_COMP_NONE, HAP_COMP_SNAPPY, FLAGS, "compressor" },
        { "none",       "None", 0, AV_OPT_TYPE_CONST, { .i64 = HAP_COMP_NONE }, 0, 0, FLAGS, "compressor" },
        { "snappy",     "Snappy", 0, AV_OPT_TYPE_CONST, { .i64 = HAP_COMP_SNAPPY }, 0, 0, FLAGS, "compressor" },
    { NULL },
}

Definition at line 333 of file hapenc.c.

const AVClass hapenc_class

static

Initial value:

= {
    .class_name = "Hap encoder",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 345 of file hapenc.c.

AVCodec ff_hap_encoder

Initial value:

= {
    .name           = "hap",
    .long_name      = NULL_IF_CONFIG_SMALL("Vidvox Hap"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_HAP,
    .priv_data_size = sizeof(HapContext),
    .priv_class     = &hapenc_class,
    .init           = hap_init,
    .encode2        = hap_encode,
    .close          = hap_close,
    .pix_fmts       = (const enum AVPixelFormat[]) {
        AV_PIX_FMT_RGBA, AV_PIX_FMT_NONE,
    },
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE |
                      FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 352 of file hapenc.c.