dxvenc.c File Reference

#include <stdint.h>
#include "libavutil/crc.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "dxv.h"
#include "encode.h"
#include "texturedsp.h"

Go to the source code of this file.

Data Structures
struct	HTEntry
struct	DXVEncContext

Macros
#define	DXV_HEADER_LENGTH   12
#define	LOOKBACK_HT_ELEMS   0x40000
#define	LOOKBACK_WORDS   0x20202
#define	PUSH_OP(x)
#define	OFFSET(x)   offsetof(DXVEncContext, x)
#define	FLAGS   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Functions
static void	ht_init (HTEntry *ht)
static uint32_t	ht_lookup_and_upsert (HTEntry *ht, const AVCRC *hash_ctx, uint32_t key, uint32_t pos)
static void	ht_delete (HTEntry *ht, const AVCRC *hash_ctx, uint32_t key, uint32_t pos)
static int	dxv_compress_dxt1 (AVCodecContext *avctx)
static int	dxv_encode (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
static av_cold int	dxv_init (AVCodecContext *avctx)
static av_cold int	dxv_close (AVCodecContext *avctx)

Variables
static const AVOption	options []
static const AVClass	dxvenc_class
const FFCodec	ff_dxv_encoder

Macro Definition Documentation

DXV_HEADER_LENGTH

#define DXV_HEADER_LENGTH   12

Definition at line 35 of file dxvenc.c.

LOOKBACK_HT_ELEMS

#define LOOKBACK_HT_ELEMS   0x40000

Definition at line 42 of file dxvenc.c.

LOOKBACK_WORDS

#define LOOKBACK_WORDS   0x20202

Definition at line 43 of file dxvenc.c.

PUSH_OP

#define PUSH_OP

(

x

)

Value:

    do {                                                                      \
        if (state == 16) {                                                    \
            if (bytestream2_get_bytes_left_p(pbc) < 4) {                      \
                return AVERROR_INVALIDDATA;                                   \
            }                                                                 \
            value = pbc->buffer;                                              \
            bytestream2_put_le32(pbc, 0);                                     \
            state = 0;                                                        \
        }                                                                     \
        if (idx >= 0x102 * x) {                                               \
            op = 3;                                                           \
            bytestream2_put_le16(pbc, (idx / x) - 0x102);                     \
        } else if (idx >= 2 * x) {                                            \
            op = 2;                                                           \
            bytestream2_put_byte(pbc, (idx / x) - 2);                         \
        } else if (idx == x) {                                                \
            op = 1;                                                           \
        } else {                                                              \
            op = 0;                                                           \
        }                                                                     \
        AV_WL32(value, AV_RL32(value) | (op << (state * 2)));                 \
        state++;                                                              \
    } while (0)

Definition at line 132 of file dxvenc.c.

OFFSET

#define OFFSET

(

x

)

offsetof(DXVEncContext, x)

Definition at line 327 of file dxvenc.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 328 of file dxvenc.c.

Function Documentation

ht_init()

static void ht_init ( HTEntry *  ht )

static

Definition at line 50 of file dxvenc.c.

Referenced by dxv_compress_dxt1().

ht_lookup_and_upsert()

static uint32_t ht_lookup_and_upsert ( HTEntry *  ht, const AVCRC *  hash_ctx, uint32_t  key, uint32_t  pos  )

static

Definition at line 57 of file dxvenc.c.

Referenced by dxv_compress_dxt1().

ht_delete()

static void ht_delete ( HTEntry *  ht, const AVCRC *  hash_ctx, uint32_t  key, uint32_t  pos  )

static

Definition at line 75 of file dxvenc.c.

Referenced by dxv_compress_dxt1().

dxv_compress_dxt1()

static int dxv_compress_dxt1 ( AVCodecContext *  avctx )

static

Definition at line 157 of file dxvenc.c.

Referenced by dxv_init().

dxv_encode()

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

static

Definition at line 219 of file dxvenc.c.

dxv_init()

static av_cold int dxv_init ( AVCodecContext *  avctx )

static

Definition at line 266 of file dxvenc.c.

dxv_close()

static av_cold int dxv_close ( AVCodecContext *  avctx )

static

Definition at line 318 of file dxvenc.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
    { "format", NULL, OFFSET(tex_fmt), AV_OPT_TYPE_INT, { .i64 = DXV_FMT_DXT1 }, DXV_FMT_DXT1, DXV_FMT_DXT1, FLAGS, .unit = "format" },
        { "dxt1", "DXT1 (Normal Quality, No Alpha)", 0, AV_OPT_TYPE_CONST, { .i64 = DXV_FMT_DXT1   }, 0, 0, FLAGS, .unit = "format" },
    { NULL },
}

Definition at line 329 of file dxvenc.c.

dxvenc_class

const AVClass dxvenc_class

static

Initial value:

= {
    .class_name = "DXV encoder",
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 335 of file dxvenc.c.

ff_dxv_encoder

const FFCodec ff_dxv_encoder

Initial value:

= {
    .p.name         = "dxv",
    CODEC_LONG_NAME("Resolume DXV"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_DXV,
    .init           = dxv_init,
    FF_CODEC_ENCODE_CB(dxv_encode),
    .close          = dxv_close,
    .priv_data_size = sizeof(DXVEncContext),
    .p.capabilities = AV_CODEC_CAP_DR1 |
                      AV_CODEC_CAP_SLICE_THREADS |
                      AV_CODEC_CAP_FRAME_THREADS,
    .p.priv_class   = &dxvenc_class,
    .p.pix_fmts     = (const enum AVPixelFormat[]) {
        AV_PIX_FMT_RGBA, AV_PIX_FMT_NONE,
    },
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 341 of file dxvenc.c.