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ffmpeg.wasm-core
Commit fd8de7f2 authored by Alexandra Hájková's avatar Alexandra Hájková Committed by Diego Biurrun
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dxtory: Convert to the new bitstream reader

parent 4d49a4c5
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Showing with 44 additions and 44 deletions
libavcodec/dxtory.c
View file @ fd8de7f2
......@@ -27,10 +27,10 @@
#define BITSTREAM_READER_LE
#include "avcodec.h"
#include "bitstream.h"
#include "bytestream.h"
#include "get_bits.h"
#include "internal.h"
#include "unary_legacy.h"
#include "unary.h"
static int dxtory_decode_v1_rgb(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size,
......@@ -176,13 +176,13 @@ static const uint8_t def_lru[8] = { 0x00, 0x20, 0x40, 0x60, 0x80, 0xA0, 0xC0, 0x
static const uint8_t def_lru_555[8] = { 0x00, 0x08, 0x10, 0x18, 0x1F };
static const uint8_t def_lru_565[8] = { 0x00, 0x08, 0x10, 0x20, 0x30, 0x3F };
static inline uint8_t decode_sym(GetBitContext *gb, uint8_t lru[8])
static inline uint8_t decode_sym(BitstreamContext *bc, uint8_t lru[8])
{
uint8_t c, val;
c = get_unary(gb, 0, 8);
c = get_unary(bc, 0, 8);
if (!c) {
val = get_bits(gb, 8);
val = bitstream_read(bc, 8);
memmove(lru + 1, lru, sizeof(*lru) * (8 - 1));
} else {
val = lru[c - 1];
......@@ -243,14 +243,14 @@ static int load_buffer(AVCodecContext *avctx,
return 0;
}
static inline uint8_t decode_sym_565(GetBitContext *gb, uint8_t lru[8],
static inline uint8_t decode_sym_565(BitstreamContext *bc, uint8_t lru[8],
int bits)
{
uint8_t c, val;
c = get_unary(gb, 0, bits);
c = get_unary(bc, 0, bits);
if (!c) {
val = get_bits(gb, bits);
val = bitstream_read(bc, bits);
memmove(lru + 1, lru, sizeof(*lru) * (6 - 1));
} else {
val = lru[c - 1];
......@@ -261,7 +261,7 @@ static inline uint8_t decode_sym_565(GetBitContext *gb, uint8_t lru[8],
return val;
}
typedef int (*decode_slice_func)(GetBitContext *gb, AVFrame *frame,
typedef int (*decode_slice_func)(BitstreamContext *bc, AVFrame *frame,
int line, int height, uint8_t lru[3][8]);
typedef void (*setup_lru_func)(uint8_t lru[3][8]);
......@@ -273,7 +273,7 @@ static int dxtory_decode_v2(AVCodecContext *avctx, AVFrame *pic,
enum AVPixelFormat fmt)
{
GetByteContext gb;
GetBitContext gb2;
BitstreamContext bc;
int nslices, slice, line = 0;
uint32_t off, slice_size;
uint8_t lru[3][8];
......@@ -296,9 +296,9 @@ static int dxtory_decode_v2(AVCodecContext *avctx, AVFrame *pic,
if (ret < 0)
return ret;
init_get_bits(&gb2, src + off + 16, (slice_size - 16) * 8);
bitstream_init8(&bc, src + off + 16, slice_size - 16);
line += decode_slice(&gb2, pic, line, avctx->height - line, lru);
line += decode_slice(&bc, pic, line, avctx->height - line, lru);
off += slice_size;
}
......@@ -315,7 +315,7 @@ static int dxtory_decode_v2(AVCodecContext *avctx, AVFrame *pic,
}
av_always_inline
static int dx2_decode_slice_5x5(GetBitContext *gb, AVFrame *frame,
static int dx2_decode_slice_5x5(BitstreamContext *bc, AVFrame *frame,
int line, int left, uint8_t lru[3][8],
int is_565)
{
......@@ -325,11 +325,11 @@ static int dx2_decode_slice_5x5(GetBitContext *gb, AVFrame *frame,
int stride = frame->linesize[0];
uint8_t *dst = frame->data[0] + stride * line;
for (y = 0; y < left && get_bits_left(gb) > 16; y++) {
for (y = 0; y < left && bitstream_bits_left(bc) > 16; y++) {
for (x = 0; x < width; x++) {
b = decode_sym_565(gb, lru[0], 5);
g = decode_sym_565(gb, lru[1], is_565 ? 6 : 5);
r = decode_sym_565(gb, lru[2], 5);
b = decode_sym_565(bc, lru[0], 5);
g = decode_sym_565(bc, lru[1], is_565 ? 6 : 5);
r = decode_sym_565(bc, lru[2], 5);
dst[x * 3 + 0] = (r << 3) | (r >> 2);
dst[x * 3 + 1] = is_565 ? (g << 2) | (g >> 4) : (g << 3) | (g >> 2);
dst[x * 3 + 2] = (b << 3) | (b >> 2);
......@@ -355,16 +355,16 @@ static void setup_lru_565(uint8_t lru[3][8])
memcpy(lru[2], def_lru_555, 8 * sizeof(*def_lru));
}
static int dx2_decode_slice_555(GetBitContext *gb, AVFrame *frame,
static int dx2_decode_slice_555(BitstreamContext *bc, AVFrame *frame,
int line, int left, uint8_t lru[3][8])
{
return dx2_decode_slice_5x5(gb, frame, line, left, lru, 0);
return dx2_decode_slice_5x5(bc, frame, line, left, lru, 0);
}
static int dx2_decode_slice_565(GetBitContext *gb, AVFrame *frame,
static int dx2_decode_slice_565(BitstreamContext *bc, AVFrame *frame,
int line, int left, uint8_t lru[3][8])
{
return dx2_decode_slice_5x5(gb, frame, line, left, lru, 1);
return dx2_decode_slice_5x5(bc, frame, line, left, lru, 1);
}
static int dxtory_decode_v2_565(AVCodecContext *avctx, AVFrame *pic,
......@@ -383,7 +383,7 @@ static int dxtory_decode_v2_565(AVCodecContext *avctx, AVFrame *pic,
fmt);
}
static int dx2_decode_slice_rgb(GetBitContext *gb, AVFrame *frame,
static int dx2_decode_slice_rgb(BitstreamContext *bc, AVFrame *frame,
int line, int left, uint8_t lru[3][8])
{
int x, y;
......@@ -391,11 +391,11 @@ static int dx2_decode_slice_rgb(GetBitContext *gb, AVFrame *frame,
int stride = frame->linesize[0];
uint8_t *dst = frame->data[0] + stride * line;
for (y = 0; y < left && get_bits_left(gb) > 16; y++) {
for (y = 0; y < left && bitstream_bits_left(bc) > 16; y++) {
for (x = 0; x < width; x++) {
dst[x * 3 + 0] = decode_sym(gb, lru[0]);
dst[x * 3 + 1] = decode_sym(gb, lru[1]);
dst[x * 3 + 2] = decode_sym(gb, lru[2]);
dst[x * 3 + 0] = decode_sym(bc, lru[0]);
dst[x * 3 + 1] = decode_sym(bc, lru[1]);
dst[x * 3 + 2] = decode_sym(bc, lru[2]);
}
dst += stride;
......@@ -421,7 +421,7 @@ static int dxtory_decode_v2_rgb(AVCodecContext *avctx, AVFrame *pic,
AV_PIX_FMT_BGR24);
}
static int dx2_decode_slice_410(GetBitContext *gb, AVFrame *frame,
static int dx2_decode_slice_410(BitstreamContext *bc, AVFrame *frame,
int line, int left,
uint8_t lru[3][8])
{
......@@ -436,13 +436,13 @@ static int dx2_decode_slice_410(GetBitContext *gb, AVFrame *frame,
uint8_t *U = frame->data[1] + (ustride >> 2) * line;
uint8_t *V = frame->data[2] + (vstride >> 2) * line;
for (y = 0; y < left - 3 && get_bits_left(gb) > 16; y += 4) {
for (y = 0; y < left - 3 && bitstream_bits_left(bc) > 16; y += 4) {
for (x = 0; x < width; x += 4) {
for (j = 0; j < 4; j++)
for (i = 0; i < 4; i++)
Y[x + i + j * ystride] = decode_sym(gb, lru[0]);
U[x >> 2] = decode_sym(gb, lru[1]) ^ 0x80;
V[x >> 2] = decode_sym(gb, lru[2]) ^ 0x80;
Y[x + i + j * ystride] = decode_sym(bc, lru[0]);
U[x >> 2] = decode_sym(bc, lru[1]) ^ 0x80;
V[x >> 2] = decode_sym(bc, lru[2]) ^ 0x80;
}
Y += ystride << 2;
......@@ -463,7 +463,7 @@ static int dxtory_decode_v2_410(AVCodecContext *avctx, AVFrame *pic,
AV_PIX_FMT_YUV410P);
}
static int dx2_decode_slice_420(GetBitContext *gb, AVFrame *frame,
static int dx2_decode_slice_420(BitstreamContext *bc, AVFrame *frame,
int line, int left,
uint8_t lru[3][8])
{
......@@ -480,14 +480,14 @@ static int dx2_decode_slice_420(GetBitContext *gb, AVFrame *frame,
uint8_t *V = frame->data[2] + (vstride >> 1) * line;
for (y = 0; y < left - 1 && get_bits_left(gb) > 16; y += 2) {
for (y = 0; y < left - 1 && bitstream_bits_left(bc) > 16; y += 2) {
for (x = 0; x < width; x += 2) {
Y[x + 0 + 0 * ystride] = decode_sym(gb, lru[0]);
Y[x + 1 + 0 * ystride] = decode_sym(gb, lru[0]);
Y[x + 0 + 1 * ystride] = decode_sym(gb, lru[0]);
Y[x + 1 + 1 * ystride] = decode_sym(gb, lru[0]);
U[x >> 1] = decode_sym(gb, lru[1]) ^ 0x80;
V[x >> 1] = decode_sym(gb, lru[2]) ^ 0x80;
Y[x + 0 + 0 * ystride] = decode_sym(bc, lru[0]);
Y[x + 1 + 0 * ystride] = decode_sym(bc, lru[0]);
Y[x + 0 + 1 * ystride] = decode_sym(bc, lru[0]);
Y[x + 1 + 1 * ystride] = decode_sym(bc, lru[0]);
U[x >> 1] = decode_sym(bc, lru[1]) ^ 0x80;
V[x >> 1] = decode_sym(bc, lru[2]) ^ 0x80;
}
Y += ystride << 1;
......@@ -507,7 +507,7 @@ static int dxtory_decode_v2_420(AVCodecContext *avctx, AVFrame *pic,
AV_PIX_FMT_YUV420P);
}
static int dx2_decode_slice_444(GetBitContext *gb, AVFrame *frame,
static int dx2_decode_slice_444(BitstreamContext *bc, AVFrame *frame,
int line, int left,
uint8_t lru[3][8])
{
......@@ -523,11 +523,11 @@ static int dx2_decode_slice_444(GetBitContext *gb, AVFrame *frame,
uint8_t *U = frame->data[1] + ustride * line;
uint8_t *V = frame->data[2] + vstride * line;
for (y = 0; y < left && get_bits_left(gb) > 16; y++) {
for (y = 0; y < left && bitstream_bits_left(bc) > 16; y++) {
for (x = 0; x < width; x++) {
Y[x] = decode_sym(gb, lru[0]);
U[x] = decode_sym(gb, lru[1]) ^ 0x80;
V[x] = decode_sym(gb, lru[2]) ^ 0x80;
Y[x] = decode_sym(bc, lru[0]);
U[x] = decode_sym(bc, lru[1]) ^ 0x80;
V[x] = decode_sym(bc, lru[2]) ^ 0x80;
}
Y += ystride;
......
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