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avcodec/v210dec: factorize row decoding

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Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2022-06-12 00:04:12 +02:00
parent 9793760f22
commit a5c7d3173c
1 changed files with 54 additions and 54 deletions
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108
libavcodec/v210dec.c
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@ -50,10 +50,61 @@ static av_cold int decode_init(AVCodecContext *avctx)
return 0;
}
static void decode_row(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, const int width,
void (*unpack_frame)(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width))
{
uint32_t val;
int w = (width / 12) * 12;
unpack_frame(src, y, u, v, w);
y += w;
u += w >> 1;
v += w >> 1;
src += (w << 1) / 3;
if (w < width - 5) {
READ_PIXELS(u, y, v);
READ_PIXELS(y, u, y);
READ_PIXELS(v, y, u);
READ_PIXELS(y, v, y);
w += 6;
}
if (w++ < width) {
READ_PIXELS(u, y, v);
if (w++ < width) {
val = av_le2ne32(*src++);
*y++ = val & 0x3FF;
if (w++ < width) {
*u++ = (val >> 10) & 0x3FF;
*y++ = (val >> 20) & 0x3FF;
val = av_le2ne32(*src++);
*v++ = val & 0x3FF;
if (w++ < width) {
*y++ = (val >> 10) & 0x3FF;
if (w++ < width) {
*u++ = (val >> 20) & 0x3FF;
val = av_le2ne32(*src++);
*y++ = val & 0x3FF;
*v++ = (val >> 10) & 0x3FF;
if (w++ < width)
*y++ = (val >> 20) & 0x3FF;
}
}
}
}
}
}
static int v210_decode_slice(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
{
V210DecContext *s = avctx->priv_data;
int h, w;
ThreadData *td = arg;
AVFrame *frame = td->frame;
int stride = td->stride;
@ -64,59 +115,8 @@ static int v210_decode_slice(AVCodecContext *avctx, void *arg, int jobnr, int th
int16_t *pu = (uint16_t*)frame->data[1] + slice_start * frame->linesize[1] / 2;
int16_t *pv = (uint16_t*)frame->data[2] + slice_start * frame->linesize[2] / 2;
for (h = slice_start; h < slice_end; h++) {
const uint32_t *src = (const uint32_t*)psrc;
uint32_t val;
uint16_t *y = py;
uint16_t *u = pu;
uint16_t *v = pv;
w = (avctx->width / 12) * 12;
s->unpack_frame(src, y, u, v, w);
y += w;
u += w >> 1;
v += w >> 1;
src += (w << 1) / 3;
if (w < avctx->width - 5) {
READ_PIXELS(u, y, v);
READ_PIXELS(y, u, y);
READ_PIXELS(v, y, u);
READ_PIXELS(y, v, y);
w += 6;
}
if (w++ < avctx->width) {
READ_PIXELS(u, y, v);
if (w++ < avctx->width) {
val = av_le2ne32(*src++);
*y++ = val & 0x3FF;
if (w++ < avctx->width) {
*u++ = (val >> 10) & 0x3FF;
*y++ = (val >> 20) & 0x3FF;
val = av_le2ne32(*src++);
*v++ = val & 0x3FF;
if (w++ < avctx->width) {
*y++ = (val >> 10) & 0x3FF;
if (w++ < avctx->width) {
*u++ = (val >> 20) & 0x3FF;
val = av_le2ne32(*src++);
*y++ = val & 0x3FF;
*v++ = (val >> 10) & 0x3FF;
if (w++ < avctx->width)
*y++ = (val >> 20) & 0x3FF;
}
}
}
}
}
for (int h = slice_start; h < slice_end; h++) {
decode_row((const uint32_t *)psrc, py, pu, pv, avctx->width, s->unpack_frame);
psrc += stride;
py += frame->linesize[0] / 2;
pu += frame->linesize[1] / 2;