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exr: shorter channel buffer names

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2013-02-22 12:17:17 +00:00
parent 7a930f310a
commit 89c77b6b15
1 changed files with 21 additions and 21 deletions
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42
libavcodec/exr.c
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@ -523,7 +523,7 @@ static int decode_frame(AVCodecContext *avctx,
// Process the actual scan line blocks
for (y = ymin; y <= ymax; y += scan_lines_per_block) {
uint16_t *ptr_x;
const uint8_t *red_channel_buffer, *green_channel_buffer, *blue_channel_buffer, *alpha_channel_buffer = 0;
const uint8_t *channel_buffer[4] = { 0 };
const uint64_t line_offset = bytestream_get_le64(&buf);
int32_t data_size, line;
@ -567,28 +567,28 @@ static int decode_frame(AVCodecContext *avctx,
predictor(s->tmp, uncompressed_size);
reorder_pixels(s->tmp, s->uncompressed_data, uncompressed_size);
red_channel_buffer = s->uncompressed_data + xdelta * s->channel_offsets[0];
green_channel_buffer = s->uncompressed_data + xdelta * s->channel_offsets[1];
blue_channel_buffer = s->uncompressed_data + xdelta * s->channel_offsets[2];
channel_buffer[0] = s->uncompressed_data + xdelta * s->channel_offsets[0];
channel_buffer[1] = s->uncompressed_data + xdelta * s->channel_offsets[1];
channel_buffer[2] = s->uncompressed_data + xdelta * s->channel_offsets[2];
if (s->channel_offsets[3] >= 0)
alpha_channel_buffer = s->uncompressed_data + xdelta * s->channel_offsets[3];
channel_buffer[3] = s->uncompressed_data + xdelta * s->channel_offsets[3];
} else {
red_channel_buffer = src + xdelta * s->channel_offsets[0];
green_channel_buffer = src + xdelta * s->channel_offsets[1];
blue_channel_buffer = src + xdelta * s->channel_offsets[2];
channel_buffer[0] = src + xdelta * s->channel_offsets[0];
channel_buffer[1] = src + xdelta * s->channel_offsets[1];
channel_buffer[2] = src + xdelta * s->channel_offsets[2];
if (s->channel_offsets[3] >= 0)
alpha_channel_buffer = src + xdelta * s->channel_offsets[3];
channel_buffer[3] = src + xdelta * s->channel_offsets[3];
}
ptr = p->data[0] + line * stride;
for (i = 0; i < scan_lines_per_block && y + i <= ymax; i++, ptr += stride) {
const uint8_t *r, *g, *b, *a;
r = red_channel_buffer;
g = green_channel_buffer;
b = blue_channel_buffer;
if (alpha_channel_buffer)
a = alpha_channel_buffer;
r = channel_buffer[0];
g = channel_buffer[1];
b = channel_buffer[2];
if (channel_buffer[3])
a = channel_buffer[3];
ptr_x = (uint16_t *)ptr;
@ -601,7 +601,7 @@ static int decode_frame(AVCodecContext *avctx,
*ptr_x++ = exr_flt2uint(bytestream_get_le32(&r));
*ptr_x++ = exr_flt2uint(bytestream_get_le32(&g));
*ptr_x++ = exr_flt2uint(bytestream_get_le32(&b));
if (alpha_channel_buffer)
if (channel_buffer[3])
*ptr_x++ = exr_flt2uint(bytestream_get_le32(&a));
}
} else {
@ -610,7 +610,7 @@ static int decode_frame(AVCodecContext *avctx,
*ptr_x++ = exr_halflt2uint(bytestream_get_le16(&r));
*ptr_x++ = exr_halflt2uint(bytestream_get_le16(&g));
*ptr_x++ = exr_halflt2uint(bytestream_get_le16(&b));
if (alpha_channel_buffer)
if (channel_buffer[3])
*ptr_x++ = exr_halflt2uint(bytestream_get_le16(&a));
}
}
@ -618,11 +618,11 @@ static int decode_frame(AVCodecContext *avctx,
// Zero out the end if xmax+1 is not w
memset(ptr_x, 0, axmax);
red_channel_buffer += scan_line_size;
green_channel_buffer += scan_line_size;
blue_channel_buffer += scan_line_size;
if (alpha_channel_buffer)
alpha_channel_buffer += scan_line_size;
channel_buffer[0] += scan_line_size;
channel_buffer[1] += scan_line_size;
channel_buffer[2] += scan_line_size;
if (channel_buffer[3])
channel_buffer[3] += scan_line_size;
}
}