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ffmpeg.wasm-core
Commit 4324a3ce authored by Anton Khirnov's avatar Anton Khirnov
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vb: cosmetics, reformat

parent 9dbbda23
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Showing with 35 additions and 35 deletions
libavcodec/vb.c
View file @ 4324a3ce
......@@ -31,7 +31,7 @@
#include "bytestream.h"
#include "internal.h"
enum VBFlags{
enum VBFlags {
VB_HAS_GMC = 0x01,
VB_HAS_AUDIO = 0x04,
VB_HAS_VIDEO = 0x08,
......@@ -64,16 +64,16 @@ static void vb_decode_palette(VBDecContext *c, int data_size)
int start, size, i;
start = bytestream2_get_byte(&c->stream);
size = (bytestream2_get_byte(&c->stream) - 1) & 0xFF;
if(start + size > 255){
size = (bytestream2_get_byte(&c->stream) - 1) & 0xFF;
if (start + size > 255) {
av_log(c->avctx, AV_LOG_ERROR, "Palette change runs beyond entry 256\n");
return;
}
if(size*3+2 > data_size){
if (size*3+2 > data_size) {
av_log(c->avctx, AV_LOG_ERROR, "Palette data runs beyond chunk size\n");
return;
}
for(i = start; i <= start + size; i++)
for (i = start; i <= start + size; i++)
c->pal[i] = bytestream2_get_be24(&c->stream);
}
......@@ -97,42 +97,42 @@ static int vb_decode_framedata(VBDecContext *c, int offset)
int pattype, pattern;
const int width = c->avctx->width;
uint8_t *pstart = c->prev_frame;
uint8_t *pend = c->prev_frame + width*c->avctx->height;
uint8_t *pend = c->prev_frame + width*c->avctx->height;
g = c->stream;
prev = c->prev_frame + offset;
cur = c->frame;
cur = c->frame;
blocks = (c->avctx->width >> 2) * (c->avctx->height >> 2);
blk2 = 0;
for(blk = 0; blk < blocks; blk++){
if(!(blk & 3)) {
blk2 = 0;
for (blk = 0; blk < blocks; blk++) {
if (!(blk & 3)) {
blocktypes = bytestream2_get_byte(&g);
}
switch(blocktypes & 0xC0){
switch (blocktypes & 0xC0) {
case 0x00: //skip
for(y = 0; y < 4; y++)
if(check_line(prev + y*width, pstart, pend))
for (y = 0; y < 4; y++)
if (check_line(prev + y*width, pstart, pend))
memcpy(cur + y*width, prev + y*width, 4);
else
memset(cur + y*width, 0, 4);
break;
case 0x40:
t = bytestream2_get_byte(&g);
if(!t){ //raw block
if (!t) { //raw block
if (bytestream2_get_bytes_left(&g) < 16) {
av_log(c->avctx, AV_LOG_ERROR, "Insufficient data\n");
return AVERROR_INVALIDDATA;
}
for(y = 0; y < 4; y++)
for (y = 0; y < 4; y++)
bytestream2_get_buffer(&g, cur + y * width, 4);
}else{ // motion compensation
} else { // motion compensation
x = ((t & 0xF)^8) - 8;
y = ((t >> 4) ^8) - 8;
t = x + y*width;
for(y = 0; y < 4; y++)
if(check_line(prev + t + y*width, pstart, pend))
for (y = 0; y < 4; y++)
if (check_line(prev + t + y*width, pstart, pend))
memcpy(cur + y*width, prev + t + y*width, 4);
else
memset(cur + y*width, 0, 4);
......@@ -140,34 +140,34 @@ static int vb_decode_framedata(VBDecContext *c, int offset)
break;
case 0x80: // fill
t = bytestream2_get_byte(&g);
for(y = 0; y < 4; y++)
for (y = 0; y < 4; y++)
memset(cur + y*width, t, 4);
break;
case 0xC0: // pattern fill
t = bytestream2_get_byte(&g);
t = bytestream2_get_byte(&g);
pattype = t >> 6;
pattern = vb_patterns[t & 0x3F];
switch(pattype){
switch (pattype) {
case 0:
a = bytestream2_get_byte(&g);
b = bytestream2_get_byte(&g);
for(y = 0; y < 4; y++)
for(x = 0; x < 4; x++, pattern >>= 1)
for (y = 0; y < 4; y++)
for (x = 0; x < 4; x++, pattern >>= 1)
cur[x + y*width] = (pattern & 1) ? b : a;
break;
case 1:
pattern = ~pattern;
case 2:
a = bytestream2_get_byte(&g);
for(y = 0; y < 4; y++)
for(x = 0; x < 4; x++, pattern >>= 1)
if(pattern & 1 && check_pixel(prev + x + y*width, pstart, pend))
for (y = 0; y < 4; y++)
for (x = 0; x < 4; x++, pattern >>= 1)
if (pattern & 1 && check_pixel(prev + x + y*width, pstart, pend))
cur[x + y*width] = prev[x + y*width];
else
cur[x + y*width] = a;
break;
case 3:
av_log(c->avctx, AV_LOG_ERROR, "Invalid opcode seen @%d\n",blk);
av_log(c->avctx, AV_LOG_ERROR, "Invalid opcode seen @%d\n", blk);
return AVERROR_INVALIDDATA;
}
break;
......@@ -176,8 +176,8 @@ static int vb_decode_framedata(VBDecContext *c, int offset)
cur += 4;
prev += 4;
blk2++;
if(blk2 == (width >> 2)){
blk2 = 0;
if (blk2 == (width >> 2)) {
blk2 = 0;
cur += width * 3;
prev += width * 3;
}
......@@ -197,7 +197,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
bytestream2_init(&c->stream, avpkt->data, avpkt->size);
if(c->pic.data[0])
if (c->pic.data[0])
avctx->release_buffer(avctx, &c->pic);
c->pic.reference = 1;
if ((ret = ff_get_buffer(avctx, &c->pic)) < 0) {
......@@ -207,17 +207,17 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
flags = bytestream2_get_le16(&c->stream);
if(flags & VB_HAS_GMC){
if (flags & VB_HAS_GMC) {
i = (int16_t)bytestream2_get_le16(&c->stream);
j = (int16_t)bytestream2_get_le16(&c->stream);
offset = i + j * avctx->width;
}
if(flags & VB_HAS_VIDEO){
if (flags & VB_HAS_VIDEO) {
size = bytestream2_get_le32(&c->stream);
vb_decode_framedata(c, offset);
bytestream2_skip(&c->stream, size - 4);
}
if(flags & VB_HAS_PALETTE){
if (flags & VB_HAS_PALETTE) {
size = bytestream2_get_le32(&c->stream);
vb_decode_palette(c, size);
}
......@@ -228,7 +228,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
outptr = c->pic.data[0];
srcptr = c->frame;
for(i = 0; i < avctx->height; i++){
for (i = 0; i < avctx->height; i++) {
memcpy(outptr, srcptr, avctx->width);
srcptr += avctx->width;
outptr += c->pic.linesize[0];
......@@ -247,7 +247,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
{
VBDecContext * const c = avctx->priv_data;
c->avctx = avctx;
c->avctx = avctx;
avctx->pix_fmt = AV_PIX_FMT_PAL8;
c->frame = av_mallocz(avctx->width * avctx->height);
......
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