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ffmpeg.wasm-core
Commit 0e1ad2f5 authored by Kostya Shishkov's avatar Kostya Shishkov
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dxtory: add more compressed and uncompressed modes

parent 50866c8d
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Showing with 418 additions and 11 deletions
libavcodec/dxtory.c
View file @ 0e1ad2f5
......@@ -29,8 +29,78 @@
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
static int dxtory_decode_v1(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
static int dxtory_decode_v1_rgb(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size,
int id, int bpp)
{
int h;
uint8_t *dst;
int ret;
if (src_size < avctx->width * avctx->height * bpp) {
av_log(avctx, AV_LOG_ERROR, "packet too small\n");
return AVERROR_INVALIDDATA;
}
avctx->pix_fmt = id;
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
return ret;
dst = pic->data[0];
for (h = 0; h < avctx->height; h++) {
memcpy(dst, src, avctx->width * bpp);
src += avctx->width * bpp;
dst += pic->linesize[0];
}
return 0;
}
static int dxtory_decode_v1_410(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
{
int h, w;
uint8_t *Y1, *Y2, *Y3, *Y4, *U, *V;
int ret;
if (src_size < avctx->width * avctx->height * 18 / 16) {
av_log(avctx, AV_LOG_ERROR, "packet too small\n");
return AVERROR_INVALIDDATA;
}
avctx->pix_fmt = AV_PIX_FMT_YUV410P;
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
return ret;
Y1 = pic->data[0];
Y2 = pic->data[0] + pic->linesize[0];
Y3 = pic->data[0] + pic->linesize[0] * 2;
Y4 = pic->data[0] + pic->linesize[0] * 3;
U = pic->data[1];
V = pic->data[2];
for (h = 0; h < avctx->height; h += 4) {
for (w = 0; w < avctx->width; w += 4) {
AV_COPY32(Y1 + w, src);
AV_COPY32(Y2 + w, src + 4);
AV_COPY32(Y3 + w, src + 8);
AV_COPY32(Y4 + w, src + 12);
U[w >> 2] = src[16] + 0x80;
V[w >> 2] = src[17] + 0x80;
src += 18;
}
Y1 += pic->linesize[0] << 2;
Y2 += pic->linesize[0] << 2;
Y3 += pic->linesize[0] << 2;
Y4 += pic->linesize[0] << 2;
U += pic->linesize[1];
V += pic->linesize[2];
}
return 0;
}
static int dxtory_decode_v1_420(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
{
int h, w;
uint8_t *Y1, *Y2, *U, *V;
......@@ -66,6 +136,39 @@ static int dxtory_decode_v1(AVCodecContext *avctx, AVFrame *pic,
return 0;
}
static int dxtory_decode_v1_444(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
{
int h, w;
uint8_t *Y, *U, *V;
int ret;
if (src_size < avctx->width * avctx->height * 3) {
av_log(avctx, AV_LOG_ERROR, "packet too small\n");
return AVERROR_INVALIDDATA;
}
avctx->pix_fmt = AV_PIX_FMT_YUV444P;
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
return ret;
Y = pic->data[0];
U = pic->data[1];
V = pic->data[2];
for (h = 0; h < avctx->height; h++) {
for (w = 0; w < avctx->width; w++) {
Y[w] = *src++;
U[w] = *src++ ^ 0x80;
V[w] = *src++ ^ 0x80;
}
Y += pic->linesize[0];
U += pic->linesize[1];
V += pic->linesize[2];
}
return 0;
}
const uint8_t def_lru[8] = { 0x00, 0x20, 0x40, 0x60, 0x80, 0xA0, 0xC0, 0xFF };
static inline uint8_t decode_sym(GetBitContext *gb, uint8_t lru[8])
......@@ -85,9 +188,193 @@ static inline uint8_t decode_sym(GetBitContext *gb, uint8_t lru[8])
return val;
}
static int dx2_decode_slice(GetBitContext *gb, int width, int height,
uint8_t *Y, uint8_t *U, uint8_t *V,
int ystride, int ustride, int vstride)
static int dx2_decode_slice_rgb(GetBitContext *gb, int width, int height,
uint8_t *dst, int stride)
{
int x, y, i;
uint8_t lru[3][8];
for (i = 0; i < 3; i++)
memcpy(lru[i], def_lru, 8 * sizeof(*def_lru));
for (y = 0; y < height; 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 += stride;
}
return 0;
}
static int dxtory_decode_v2_rgb(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
{
GetByteContext gb;
GetBitContext gb2;
int nslices, slice, slice_height;
uint32_t off, slice_size;
uint8_t *dst;
int ret;
bytestream2_init(&gb, src, src_size);
nslices = bytestream2_get_le16(&gb);
off = FFALIGN(nslices * 4 + 2, 16);
if (src_size < off) {
av_log(avctx, AV_LOG_ERROR, "no slice data\n");
return AVERROR_INVALIDDATA;
}
if (!nslices || avctx->height % nslices) {
avpriv_request_sample(avctx, "%d slices for %dx%d", nslices,
avctx->width, avctx->height);
return AVERROR_PATCHWELCOME;
}
slice_height = avctx->height / nslices;
avctx->pix_fmt = AV_PIX_FMT_BGR24;
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
return ret;
dst = pic->data[0];
for (slice = 0; slice < nslices; slice++) {
slice_size = bytestream2_get_le32(&gb);
if (slice_size > src_size - off) {
av_log(avctx, AV_LOG_ERROR,
"invalid slice size %d (only %d bytes left)\n",
slice_size, src_size - off);
return AVERROR_INVALIDDATA;
}
if (slice_size <= 16) {
av_log(avctx, AV_LOG_ERROR, "invalid slice size %d\n", slice_size);
return AVERROR_INVALIDDATA;
}
if (AV_RL32(src + off) != slice_size - 16) {
av_log(avctx, AV_LOG_ERROR,
"Slice sizes mismatch: got %d instead of %d\n",
AV_RL32(src + off), slice_size - 16);
}
init_get_bits(&gb2, src + off + 16, (slice_size - 16) * 8);
dx2_decode_slice_rgb(&gb2, avctx->width, slice_height, dst,
pic->linesize[0]);
dst += pic->linesize[0] * slice_height;
off += slice_size;
}
return 0;
}
static int dx2_decode_slice_410(GetBitContext *gb, int width, int height,
uint8_t *Y, uint8_t *U, uint8_t *V,
int ystride, int ustride, int vstride)
{
int x, y, i, j;
uint8_t lru[3][8];
for (i = 0; i < 3; i++)
memcpy(lru[i], def_lru, 8 * sizeof(*def_lru));
for (y = 0; y < height; 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 += ystride << 2;
U += ustride;
V += vstride;
}
return 0;
}
static int dxtory_decode_v2_410(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
{
GetByteContext gb;
GetBitContext gb2;
int nslices, slice, slice_height, ref_slice_height;
int cur_y, next_y;
uint32_t off, slice_size;
uint8_t *Y, *U, *V;
int ret;
bytestream2_init(&gb, src, src_size);
nslices = bytestream2_get_le16(&gb);
off = FFALIGN(nslices * 4 + 2, 16);
if (src_size < off) {
av_log(avctx, AV_LOG_ERROR, "no slice data\n");
return AVERROR_INVALIDDATA;
}
if (!nslices || avctx->height % nslices) {
avpriv_request_sample(avctx, "%d slices for %dx%d", nslices,
avctx->width, avctx->height);
return AVERROR_PATCHWELCOME;
}
ref_slice_height = avctx->height / nslices;
if ((avctx->width & 3) || (avctx->height & 3)) {
avpriv_request_sample(avctx, "Frame dimensions %dx%d",
avctx->width, avctx->height);
}
avctx->pix_fmt = AV_PIX_FMT_YUV410P;
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
return ret;
Y = pic->data[0];
U = pic->data[1];
V = pic->data[2];
cur_y = 0;
next_y = ref_slice_height;
for (slice = 0; slice < nslices; slice++) {
slice_size = bytestream2_get_le32(&gb);
slice_height = (next_y & ~3) - (cur_y & ~3);
if (slice_size > src_size - off) {
av_log(avctx, AV_LOG_ERROR,
"invalid slice size %d (only %d bytes left)\n",
slice_size, src_size - off);
return AVERROR_INVALIDDATA;
}
if (slice_size <= 16) {
av_log(avctx, AV_LOG_ERROR, "invalid slice size %d\n", slice_size);
return AVERROR_INVALIDDATA;
}
if (AV_RL32(src + off) != slice_size - 16) {
av_log(avctx, AV_LOG_ERROR,
"Slice sizes mismatch: got %d instead of %d\n",
AV_RL32(src + off), slice_size - 16);
}
init_get_bits(&gb2, src + off + 16, (slice_size - 16) * 8);
dx2_decode_slice_410(&gb2, avctx->width, slice_height, Y, U, V,
pic->linesize[0], pic->linesize[1],
pic->linesize[2]);
Y += pic->linesize[0] * slice_height;
U += pic->linesize[1] * (slice_height >> 2);
V += pic->linesize[2] * (slice_height >> 2);
off += slice_size;
cur_y = next_y;
next_y += ref_slice_height;
}
return 0;
}
static int dx2_decode_slice_420(GetBitContext *gb, int width, int height,
uint8_t *Y, uint8_t *U, uint8_t *V,
int ystride, int ustride, int vstride)
{
int x, y, i;
uint8_t lru[3][8];
......@@ -113,8 +400,8 @@ static int dx2_decode_slice(GetBitContext *gb, int width, int height,
return 0;
}
static int dxtory_decode_v2(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
static int dxtory_decode_v2_420(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
{
GetByteContext gb;
GetBitContext gb2;
......@@ -174,8 +461,9 @@ static int dxtory_decode_v2(AVCodecContext *avctx, AVFrame *pic,
AV_RL32(src + off), slice_size - 16);
}
init_get_bits(&gb2, src + off + 16, (slice_size - 16) * 8);
dx2_decode_slice(&gb2, avctx->width, slice_height, Y, U, V,
pic->linesize[0], pic->linesize[1], pic->linesize[2]);
dx2_decode_slice_420(&gb2, avctx->width, slice_height, Y, U, V,
pic->linesize[0], pic->linesize[1],
pic->linesize[2]);
Y += pic->linesize[0] * slice_height;
U += pic->linesize[1] * (slice_height >> 1);
......@@ -188,6 +476,97 @@ static int dxtory_decode_v2(AVCodecContext *avctx, AVFrame *pic,
return 0;
}
static int dx2_decode_slice_444(GetBitContext *gb, int width, int height,
uint8_t *Y, uint8_t *U, uint8_t *V,
int ystride, int ustride, int vstride)
{
int x, y, i;
uint8_t lru[3][8];
for (i = 0; i < 3; i++)
memcpy(lru[i], def_lru, 8 * sizeof(*def_lru));
for (y = 0; y < height; 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 += ystride;
U += ustride;
V += vstride;
}
return 0;
}
static int dxtory_decode_v2_444(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
{
GetByteContext gb;
GetBitContext gb2;
int nslices, slice, slice_height;
uint32_t off, slice_size;
uint8_t *Y, *U, *V;
int ret;
bytestream2_init(&gb, src, src_size);
nslices = bytestream2_get_le16(&gb);
off = FFALIGN(nslices * 4 + 2, 16);
if (src_size < off) {
av_log(avctx, AV_LOG_ERROR, "no slice data\n");
return AVERROR_INVALIDDATA;
}
if (!nslices || avctx->height % nslices) {
avpriv_request_sample(avctx, "%d slices for %dx%d", nslices,
avctx->width, avctx->height);
return AVERROR_PATCHWELCOME;
}
slice_height = avctx->height / nslices;
avctx->pix_fmt = AV_PIX_FMT_YUV444P;
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
return ret;
Y = pic->data[0];
U = pic->data[1];
V = pic->data[2];
for (slice = 0; slice < nslices; slice++) {
slice_size = bytestream2_get_le32(&gb);
if (slice_size > src_size - off) {
av_log(avctx, AV_LOG_ERROR,
"invalid slice size %d (only %d bytes left)\n",
slice_size, src_size - off);
return AVERROR_INVALIDDATA;
}
if (slice_size <= 16) {
av_log(avctx, AV_LOG_ERROR, "invalid slice size %d\n", slice_size);
return AVERROR_INVALIDDATA;
}
if (AV_RL32(src + off) != slice_size - 16) {
av_log(avctx, AV_LOG_ERROR,
"Slice sizes mismatch: got %d instead of %d\n",
AV_RL32(src + off), slice_size - 16);
}
init_get_bits(&gb2, src + off + 16, (slice_size - 16) * 8);
dx2_decode_slice_444(&gb2, avctx->width, slice_height, Y, U, V,
pic->linesize[0], pic->linesize[1],
pic->linesize[2]);
Y += pic->linesize[0] * slice_height;
U += pic->linesize[1] * slice_height;
V += pic->linesize[2] * slice_height;
off += slice_size;
}
return 0;
}
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
AVPacket *avpkt)
{
......@@ -201,11 +580,39 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
}
switch (AV_RB32(src)) {
case 0x01000001:
ret = dxtory_decode_v1_rgb(avctx, pic, src + 16, avpkt->size - 16,
AV_PIX_FMT_BGR24, 3);
break;
case 0x01000009:
ret = dxtory_decode_v2_rgb(avctx, pic, src + 16, avpkt->size - 16);
break;
case 0x02000001:
ret = dxtory_decode_v1(avctx, pic, src + 16, avpkt->size - 16);
ret = dxtory_decode_v1_420(avctx, pic, src + 16, avpkt->size - 16);
break;
case 0x02000009:
ret = dxtory_decode_v2(avctx, pic, src + 16, avpkt->size - 16);
ret = dxtory_decode_v2_420(avctx, pic, src + 16, avpkt->size - 16);
break;
case 0x03000001:
ret = dxtory_decode_v1_410(avctx, pic, src + 16, avpkt->size - 16);
break;
case 0x03000009:
ret = dxtory_decode_v2_410(avctx, pic, src + 16, avpkt->size - 16);
break;
case 0x04000001:
ret = dxtory_decode_v1_444(avctx, pic, src + 16, avpkt->size - 16);
break;
case 0x04000009:
ret = dxtory_decode_v2_444(avctx, pic, src + 16, avpkt->size - 16);
break;
case 0x17000001:
ret = dxtory_decode_v1_rgb(avctx, pic, src + 16, avpkt->size - 16,
AV_PIX_FMT_RGB565LE, 2);
break;
case 0x18000001:
case 0x19000001:
ret = dxtory_decode_v1_rgb(avctx, pic, src + 16, avpkt->size - 16,
AV_PIX_FMT_RGB555LE, 2);
break;
default:
avpriv_request_sample(avctx, "Frame header %X", AV_RB32(src));
......
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