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Merge (vp3|theora)_calculate_pixel_addresses 

Originally committed as revision 15491 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
David Conrad 2008-09-30 19:50:43 +00:00
parent 6920b98322
commit fc9618195b
1 changed files with 6 additions and 47 deletions
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53
libavcodec/vp3.c
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@ -1617,13 +1617,16 @@ static void apply_loop_filter(Vp3DecodeContext *s)
*/
static void vp3_calculate_pixel_addresses(Vp3DecodeContext *s)
{
#define Y_INITIAL(chroma_shift) s->flipped_image ? 1 : s->fragment_height >> chroma_shift
#define Y_FINISHED(chroma_shift) s->flipped_image ? y <= s->fragment_height >> chroma_shift : y > 0
int i, x, y;
const int y_inc = s->flipped_image ? 1 : -1;
/* figure out the first pixel addresses for each of the fragments */
/* Y plane */
i = 0;
for (y = s->fragment_height; y > 0; y--) {
for (y = Y_INITIAL(0); Y_FINISHED(0); y += y_inc) {
for (x = 0; x < s->fragment_width; x++) {
s->all_fragments[i++].first_pixel =
s->golden_frame.linesize[0] * y * FRAGMENT_PIXELS -
@ -1634,7 +1637,7 @@ static void vp3_calculate_pixel_addresses(Vp3DecodeContext *s)
/* U plane */
i = s->fragment_start[1];
for (y = s->fragment_height / 2; y > 0; y--) {
for (y = Y_INITIAL(1); Y_FINISHED(1); y += y_inc) {
for (x = 0; x < s->fragment_width / 2; x++) {
s->all_fragments[i++].first_pixel =
s->golden_frame.linesize[1] * y * FRAGMENT_PIXELS -
@ -1645,48 +1648,7 @@ static void vp3_calculate_pixel_addresses(Vp3DecodeContext *s)
/* V plane */
i = s->fragment_start[2];
for (y = s->fragment_height / 2; y > 0; y--) {
for (x = 0; x < s->fragment_width / 2; x++) {
s->all_fragments[i++].first_pixel =
s->golden_frame.linesize[2] * y * FRAGMENT_PIXELS -
s->golden_frame.linesize[2] +
x * FRAGMENT_PIXELS;
}
}
}
/* FIXME: this should be merged with the above! */
static void theora_calculate_pixel_addresses(Vp3DecodeContext *s)
{
int i, x, y;
/* figure out the first pixel addresses for each of the fragments */
/* Y plane */
i = 0;
for (y = 1; y <= s->fragment_height; y++) {
for (x = 0; x < s->fragment_width; x++) {
s->all_fragments[i++].first_pixel =
s->golden_frame.linesize[0] * y * FRAGMENT_PIXELS -
s->golden_frame.linesize[0] +
x * FRAGMENT_PIXELS;
}
}
/* U plane */
i = s->fragment_start[1];
for (y = 1; y <= s->fragment_height / 2; y++) {
for (x = 0; x < s->fragment_width / 2; x++) {
s->all_fragments[i++].first_pixel =
s->golden_frame.linesize[1] * y * FRAGMENT_PIXELS -
s->golden_frame.linesize[1] +
x * FRAGMENT_PIXELS;
}
}
/* V plane */
i = s->fragment_start[2];
for (y = 1; y <= s->fragment_height / 2; y++) {
for (y = Y_INITIAL(1); Y_FINISHED(1); y += y_inc) {
for (x = 0; x < s->fragment_width / 2; x++) {
s->all_fragments[i++].first_pixel =
s->golden_frame.linesize[2] * y * FRAGMENT_PIXELS -
@ -1958,10 +1920,7 @@ static int vp3_decode_frame(AVCodecContext *avctx,
/* time to figure out pixel addresses? */
if (!s->pixel_addresses_initialized)
{
if (!s->flipped_image)
vp3_calculate_pixel_addresses(s);
else
theora_calculate_pixel_addresses(s);
s->pixel_addresses_initialized = 1;
}
} else {