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Code Issues Releases Activity

utvideoenc: align mangled buffer starts.

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This is essential for fast SIMD accesses.
The same should be done with the predict output.

Reviewed-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-08-22 16:13:12 +02:00
parent d79c87a697
commit 729b2d02af
2 changed files with 11 additions and 8 deletions
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1
libavcodec/utvideo.h
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@ -75,6 +75,7 @@ typedef struct UtvideoContext {
int interlaced;
int frame_pred;
int slice_stride;
uint8_t *slice_bits, *slice_buffer[4];
int slice_bits_size;
} UtvideoContext;

18
libavcodec/utvideoenc.c
View File

@ -145,7 +145,8 @@ static av_cold int utvideo_encode_init(AVCodecContext *avctx)
}
for (i = 0; i < c->planes; i++) {
c->slice_buffer[i] = av_malloc(avctx->width * (avctx->height + 1) +
c->slice_stride = FFALIGN(avctx->width, 32);
c->slice_buffer[i] = av_malloc(c->slice_stride * (avctx->height + 2) +
FF_INPUT_BUFFER_PADDING_SIZE);
if (!c->slice_buffer[i]) {
av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer 1.\n");
@ -196,11 +197,11 @@ static av_cold int utvideo_encode_init(AVCodecContext *avctx)
return 0;
}
static void mangle_rgb_planes(uint8_t *dst[4], uint8_t *src, int step,
int stride, int width, int height)
static void mangle_rgb_planes(uint8_t *dst[4], int dst_stride, uint8_t *src,
int step, int stride, int width, int height)
{
int i, j;
int k = width;
int k = 2 * dst_stride;
unsigned g;
for (j = 0; j < height; j++) {
@ -224,6 +225,7 @@ static void mangle_rgb_planes(uint8_t *dst[4], uint8_t *src, int step,
k++;
}
}
k += dst_stride - width;
src += stride;
}
}
@ -547,16 +549,16 @@ static int utvideo_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
/* In case of RGB, mangle the planes to Ut Video's format */
if (avctx->pix_fmt == PIX_FMT_RGBA || avctx->pix_fmt == PIX_FMT_RGB24)
mangle_rgb_planes(c->slice_buffer, pic->data[0], c->planes,
pic->linesize[0], width, height);
mangle_rgb_planes(c->slice_buffer, c->slice_stride, pic->data[0],
c->planes, pic->linesize[0], width, height);
/* Deal with the planes */
switch (avctx->pix_fmt) {
case PIX_FMT_RGB24:
case PIX_FMT_RGBA:
for (i = 0; i < c->planes; i++) {
ret = encode_plane(avctx, c->slice_buffer[i] + width,
c->slice_buffer[i], width,
ret = encode_plane(avctx, c->slice_buffer[i] + 2 * c->slice_stride,
c->slice_buffer[i], c->slice_stride,
width, height, &pb);
if (ret) {