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Merge remote-tracking branch 'cehoyos/master'

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* cehoyos/master:
  Move the iconv test to the bottom of configure.
  Make 32bit zmbv colour-space opaque.
  Use uint8_t instead of uint16_t pointer in kega decoder.
  kgv1dec: Simplify kega decoding by using memcpy instead of loops

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2013-03-06 05:37:14 +01:00
parent a3541896c6 34e7a3d74c
commit 28adecf0fa
3 changed files with 14 additions and 21 deletions
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libavcodec/kgv1dec.c
+10 -19
View File
@@ -50,7 +50,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
const uint8_t *buf_end = buf + avpkt->size;
KgvContext * const c = avctx->priv_data;
int offsets[8];
uint16_t *out, *prev;
uint8_t *out, *prev;
int outcnt = 0, maxcnt;
int w, h, i, res;
@@ -75,9 +75,9 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
c->cur.reference = 3;
if ((res = ff_get_buffer(avctx, &c->cur)) < 0)
return res;
out = (uint16_t *) c->cur.data[0];
out = c->cur.data[0];
if (c->prev.data[0]) {
prev = (uint16_t *) c->prev.data[0];
prev = c->prev.data[0];
} else {
prev = NULL;
}
@@ -90,11 +90,10 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
buf += 2;
if (!(code & 0x8000)) {
out[outcnt++] = code; // rgb555 pixel coded directly
AV_WN16A(&out[2 * outcnt], code); // rgb555 pixel coded directly
outcnt++;
} else {
int count;
int inp_off;
uint16_t *inp;
if ((code & 0x6000) == 0x6000) {
// copy from previous frame
@@ -112,7 +111,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
start = (outcnt + offsets[oidx]) % maxcnt;
if (maxcnt - start < count)
if (maxcnt - start < count || maxcnt - outcnt < count)
break;
if (!prev) {
@@ -121,8 +120,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
break;
}
inp = prev;
inp_off = start;
memcpy(out + 2 * outcnt, prev + 2 * start, 2 * count);
} else {
// copy from earlier in this frame
int offset = (code & 0x1FFF) + 1;
@@ -137,19 +135,12 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
count = 4 + *buf++;
}
if (outcnt < offset)
if (outcnt < offset || maxcnt - outcnt < count)
break;
inp = out;
inp_off = outcnt - offset;
}
if (maxcnt - outcnt < count)
break;
for (i = inp_off; i < count + inp_off; i++) {
out[outcnt++] = inp[i];
av_memcpy_backptr(out + 2 * outcnt, 2 * offset, 2 * count);
}
outcnt += count;
}
}
libavcodec/zmbv.c
+1 -1
View File
@@ -479,7 +479,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac
c->bpp = 32;
decode_intra = zmbv_decode_intra;
c->decode_xor = zmbv_decode_xor_32;
avctx->pix_fmt = AV_PIX_FMT_BGRA;
avctx->pix_fmt = AV_PIX_FMT_BGR0;
c->stride = c->width * 4;
break;
default: