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Code Issues Releases Activity

xface: reduce stack usage by directly storing 2 bytes data instead of pointers.

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Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
This commit is contained in:
Reimar Döffinger 2014-11-22 23:29:58 +01:00
parent dfc6f56c5a
commit cad3148ea3
1 changed files with 4 additions and 4 deletions
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8
libavcodec/xfaceenc.c
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@ -74,7 +74,7 @@ static int all_white(char *bitmap, int w, int h)
} }
typedef struct { typedef struct {
const ProbRange *prob_ranges[XFACE_PIXELS*2]; ProbRange prob_ranges[XFACE_PIXELS*2];
int prob_ranges_idx; int prob_ranges_idx;
} ProbRangesQueue; } ProbRangesQueue;
@ -82,7 +82,7 @@ static inline int pq_push(ProbRangesQueue *pq, const ProbRange *p)
{ {
if (pq->prob_ranges_idx >= XFACE_PIXELS * 2 - 1) if (pq->prob_ranges_idx >= XFACE_PIXELS * 2 - 1)
return -1; return -1;
pq->prob_ranges[pq->prob_ranges_idx++] = p; pq->prob_ranges[pq->prob_ranges_idx++] = *p;
return 0; return 0;
} }
@ -147,7 +147,7 @@ static int xface_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *frame, int *got_packet) const AVFrame *frame, int *got_packet)
{ {
XFaceContext *xface = avctx->priv_data; XFaceContext *xface = avctx->priv_data;
ProbRangesQueue pq = {{ 0 }, 0}; ProbRangesQueue pq = {{{ 0 }}, 0};
uint8_t bitmap_copy[XFACE_PIXELS]; uint8_t bitmap_copy[XFACE_PIXELS];
BigInt b = {0}; BigInt b = {0};
int i, j, k, ret = 0; int i, j, k, ret = 0;
@ -193,7 +193,7 @@ static int xface_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
encode_block(xface->bitmap + XFACE_WIDTH * 32 + 32, 16, 16, 0, &pq); encode_block(xface->bitmap + XFACE_WIDTH * 32 + 32, 16, 16, 0, &pq);
while (pq.prob_ranges_idx > 0) while (pq.prob_ranges_idx > 0)
push_integer(&b, pq.prob_ranges[--pq.prob_ranges_idx]); push_integer(&b, &pq.prob_ranges[--pq.prob_ranges_idx]);
/* write the inverted big integer in b to intbuf */ /* write the inverted big integer in b to intbuf */
i = 0; i = 0;