---
libavcodec/eatgq.c | 104 ++++++++++++++++++++++++++++------------------------
1 file changed, 57 insertions(+), 47 deletions(-)
diff --git a/libavcodec/eatgq.c b/libavcodec/eatgq.c
index 9fd8dcb..20948f4 100644
--- a/libavcodec/eatgq.c
+++ b/libavcodec/eatgq.c
@@ -47,23 +47,24 @@ typedef struct TgqContext {
GetByteContext gb;
} TgqContext;
-static av_cold int tgq_decode_init(AVCodecContext *avctx){
+static av_cold int tgq_decode_init(AVCodecContext *avctx)
+{
TgqContext *s = avctx->priv_data;
uint8_t idct_permutation[64];
s->avctx = avctx;
ff_init_scantable_permutation(idct_permutation, FF_NO_IDCT_PERM);
ff_init_scantable(idct_permutation, &s->scantable, ff_zigzag_direct);
avctx->time_base = (AVRational){1, 15};
- avctx->pix_fmt = AV_PIX_FMT_YUV420P;
+ avctx->pix_fmt = AV_PIX_FMT_YUV420P;
return 0;
}
static void tgq_decode_block(TgqContext *s, DCTELEM block[64], GetBitContext
*gb){
uint8_t *perm = s->scantable.permutated;
- int i,j,value;
+ int i, j, value;
block[0] = get_sbits(gb,8) * s->qtable[0];
- for(i=1; i<64; ) {
- switch(show_bits(gb,3)) {
+ for (i = 1; i < 64;) {
+ switch (show_bits(gb,3)) {
case 4:
block[perm[i++]] = 0;
case 0:
@@ -74,7 +75,7 @@ static void tgq_decode_block(TgqContext *s, DCTELEM
block[64], GetBitContext *gb
case 1:
skip_bits(gb,2);
value = get_bits(gb,6);
- for(j=0; j<value; j++)
+ for (j = 0; j < value; j++)
block[perm[i++]] = 0;
break;
case 6:
@@ -90,79 +91,84 @@ static void tgq_decode_block(TgqContext *s, DCTELEM
block[64], GetBitContext *gb
case 7: // 111b
case 3: // 011b
skip_bits(gb,2);
- if (show_bits(gb,6)==0x3F) {
+ if (show_bits(gb,6) == 0x3F) {
skip_bits(gb, 6);
- block[perm[i]] = get_sbits(gb,8)*s->qtable[perm[i]];
- }else{
- block[perm[i]] = get_sbits(gb,6)*s->qtable[perm[i]];
+ block[perm[i]] = get_sbits(gb,8) * s->qtable[perm[i]];
+ } else {
+ block[perm[i]] = get_sbits(gb,6) * s->qtable[perm[i]];
}
i++;
break;
}
}
- block[0] += 128<<4;
+ block[0] += 128 << 4;
}
-static void tgq_idct_put_mb(TgqContext *s, DCTELEM (*block)[64], int mb_x, int
mb_y){
- int linesize= s->frame.linesize[0];
- uint8_t *dest_y = s->frame.data[0] + (mb_y * 16* linesize ) +
mb_x * 16;
- uint8_t *dest_cb = s->frame.data[1] + (mb_y * 8 * s->frame.linesize[1]) +
mb_x * 8;
- uint8_t *dest_cr = s->frame.data[2] + (mb_y * 8 * s->frame.linesize[2]) +
mb_x * 8;
-
- ff_ea_idct_put_c(dest_y , linesize, block[0]);
- ff_ea_idct_put_c(dest_y + 8, linesize, block[1]);
- ff_ea_idct_put_c(dest_y + 8*linesize , linesize, block[2]);
- ff_ea_idct_put_c(dest_y + 8*linesize + 8, linesize, block[3]);
- if(!(s->avctx->flags&CODEC_FLAG_GRAY)){
+static void tgq_idct_put_mb(TgqContext *s, DCTELEM (*block)[64],
+ int mb_x, int mb_y)
+{
+ int linesize = s->frame.linesize[0];
+ uint8_t *dest_y = s->frame.data[0] + (mb_y * 16 * linesize) +
mb_x * 16;
+ uint8_t *dest_cb = s->frame.data[1] + (mb_y * 8 * s->frame.linesize[1]) +
mb_x * 8;
+ uint8_t *dest_cr = s->frame.data[2] + (mb_y * 8 * s->frame.linesize[2]) +
mb_x * 8;
+
+ ff_ea_idct_put_c(dest_y , linesize, block[0]);
+ ff_ea_idct_put_c(dest_y + 8, linesize, block[1]);
+ ff_ea_idct_put_c(dest_y + 8 * linesize , linesize, block[2]);
+ ff_ea_idct_put_c(dest_y + 8 * linesize + 8, linesize, block[3]);
+ if (!(s->avctx->flags & CODEC_FLAG_GRAY)) {
ff_ea_idct_put_c(dest_cb, s->frame.linesize[1], block[4]);
ff_ea_idct_put_c(dest_cr, s->frame.linesize[2], block[5]);
}
}
-static inline void tgq_dconly(TgqContext *s, unsigned char *dst, int
dst_stride, int dc){
- int level = av_clip_uint8((dc*s->qtable[0] + 2056)>>4);
+static inline void tgq_dconly(TgqContext *s, unsigned char *dst,
+ int dst_stride, int dc)
+{
+ int level = av_clip_uint8((dc*s->qtable[0] + 2056) >> 4);
int j;
- for(j=0;j<8;j++)
- memset(dst+j*dst_stride, level, 8);
+ for (j = 0; j < 8; j++)
+ memset(dst + j * dst_stride, level, 8);
}
static void tgq_idct_put_mb_dconly(TgqContext *s, int mb_x, int mb_y, const
int8_t *dc)
{
- int linesize= s->frame.linesize[0];
- uint8_t *dest_y = s->frame.data[0] + (mb_y * 16* linesize ) +
mb_x * 16;
- uint8_t *dest_cb = s->frame.data[1] + (mb_y * 8 * s->frame.linesize[1]) +
mb_x * 8;
- uint8_t *dest_cr = s->frame.data[2] + (mb_y * 8 * s->frame.linesize[2]) +
mb_x * 8;
+ int linesize = s->frame.linesize[0];
+ uint8_t *dest_y = s->frame.data[0] + (mb_y * 16 * linesize) +
mb_x * 16;
+ uint8_t *dest_cb = s->frame.data[1] + (mb_y * 8 * s->frame.linesize[1]) +
mb_x * 8;
+ uint8_t *dest_cr = s->frame.data[2] + (mb_y * 8 * s->frame.linesize[2]) +
mb_x * 8;
tgq_dconly(s,dest_y , linesize, dc[0]);
tgq_dconly(s,dest_y + 8, linesize, dc[1]);
tgq_dconly(s,dest_y + 8*linesize , linesize, dc[2]);
tgq_dconly(s,dest_y + 8*linesize + 8, linesize, dc[3]);
- if(!(s->avctx->flags&CODEC_FLAG_GRAY)) {
+ if (!(s->avctx->flags & CODEC_FLAG_GRAY)) {
tgq_dconly(s,dest_cb, s->frame.linesize[1], dc[4]);
tgq_dconly(s,dest_cr, s->frame.linesize[2], dc[5]);
}
}
-static void tgq_decode_mb(TgqContext *s, int mb_y, int mb_x){
+static void tgq_decode_mb(TgqContext *s, int mb_y, int mb_x)
+{
int mode;
int i;
int8_t dc[6];
mode = bytestream2_get_byte(&s->gb);
- if (mode>12) {
+ if (mode > 12) {
GetBitContext gb;
init_get_bits(&gb, s->gb.buffer, FFMIN(s->gb.buffer_end -
s->gb.buffer, mode) * 8);
- for(i=0; i<6; i++)
+ for (i = 0; i < 6; i++)
tgq_decode_block(s, s->block[i], &gb);
tgq_idct_put_mb(s, s->block, mb_x, mb_y);
bytestream2_skip(&s->gb, mode);
}else{
- if (mode==3) {
+ if (mode == 3) {
memset(dc, bytestream2_get_byte(&s->gb), 4);
dc[4] = bytestream2_get_byte(&s->gb);
dc[5] = bytestream2_get_byte(&s->gb);
- }else if (mode==6) {
+ }else if (mode == 6) {
bytestream2_get_buffer(&s->gb, dc, 6);
- }else if (mode==12) {
+ }else if (mode == 12) {
for (i = 0; i < 6; i++) {
dc[i] = bytestream2_get_byte(&s->gb);
bytestream2_skip(&s->gb, 1);
@@ -174,21 +180,24 @@ static void tgq_decode_mb(TgqContext *s, int mb_y, int
mb_x){
}
}
-static void tgq_calculate_qtable(TgqContext *s, int quant){
+static void tgq_calculate_qtable(TgqContext *s, int quant)
+{
int i,j;
- const int a = (14*(100-quant))/100 + 1;
- const int b = (11*(100-quant))/100 + 4;
- for(j=0;j<8;j++)
- for(i=0;i<8;i++)
- s->qtable[j*8+i] = ((a*(j+i)/(7+7) +
b)*ff_inv_aanscales[j*8+i])>>(14-4);
+ const int a = (14 * (100 - quant)) / 100 + 1;
+ const int b = (11 * (100 - quant)) / 100 + 4;
+ for (j = 0; j < 8; j++)
+ for (i = 0; i < 8; i++)
+ s->qtable[j * 8 + i] = ((a * (j + i) / (7 + 7) + b) *
+ ff_inv_aanscales[j * 8 + i]) >> (14 - 4);
}
static int tgq_decode_frame(AVCodecContext *avctx,
void *data, int *got_frame,
- AVPacket *avpkt){
+ AVPacket *avpkt)
+{
const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
- TgqContext *s = avctx->priv_data;
+ int buf_size = avpkt->size;
+ TgqContext *s = avctx->priv_data;
int x, y, ret;
int big_endian = AV_RL32(&buf[4]) > 0x000FFFFF;
@@ -233,7 +242,8 @@ static int tgq_decode_frame(AVCodecContext *avctx,
return avpkt->size;
}
-static av_cold int tgq_decode_end(AVCodecContext *avctx){
+static av_cold int tgq_decode_end(AVCodecContext *avctx)
+{
TgqContext *s = avctx->priv_data;
if (s->frame.data[0])
s->avctx->release_buffer(avctx, &s->frame);
--
1.7.10.4
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