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authorLuca Barbato <lu_zero@gentoo.org>2012-08-27 12:29:34 +0200
committerLuca Barbato <lu_zero@gentoo.org>2012-08-27 13:26:58 +0200
commitf76e47877c0f85a3e620a1d68a083b41827d667a (patch)
tree0b97cc3ad7d5ee907c1bf015ed309949ff77fc50 /libavcodec/huffman.c
parent125c6c07525a7153957d70a1bb5b732f113d1480 (diff)
downloadffmpeg-streaming-f76e47877c0f85a3e620a1d68a083b41827d667a.zip
ffmpeg-streaming-f76e47877c0f85a3e620a1d68a083b41827d667a.tar.gz
huffman: update to current coding style
Diffstat (limited to 'libavcodec/huffman.c')
-rw-r--r--libavcodec/huffman.c47
1 files changed, 26 insertions, 21 deletions
diff --git a/libavcodec/huffman.c b/libavcodec/huffman.c
index 9446332..676fffe 100644
--- a/libavcodec/huffman.c
+++ b/libavcodec/huffman.c
@@ -31,24 +31,26 @@
#define HNODE -1
-static void get_tree_codes(uint32_t *bits, int16_t *lens, uint8_t *xlat, Node *nodes, int node, uint32_t pfx, int pl, int *pos, int no_zero_count)
+static void get_tree_codes(uint32_t *bits, int16_t *lens, uint8_t *xlat,
+ Node *nodes, int node,
+ uint32_t pfx, int pl, int *pos, int no_zero_count)
{
int s;
s = nodes[node].sym;
- if(s != HNODE || (no_zero_count && !nodes[node].count)){
+ if (s != HNODE || (no_zero_count && !nodes[node].count)) {
bits[*pos] = pfx;
lens[*pos] = pl;
xlat[*pos] = s;
(*pos)++;
- }else{
+ } else {
pfx <<= 1;
pl++;
- get_tree_codes(bits, lens, xlat, nodes, nodes[node].n0, pfx, pl, pos,
- no_zero_count);
+ get_tree_codes(bits, lens, xlat, nodes, nodes[node].n0, pfx, pl,
+ pos, no_zero_count);
pfx |= 1;
- get_tree_codes(bits, lens, xlat, nodes, nodes[node].n0+1, pfx, pl, pos,
- no_zero_count);
+ get_tree_codes(bits, lens, xlat, nodes, nodes[node].n0 + 1, pfx, pl,
+ pos, no_zero_count);
}
}
@@ -60,7 +62,8 @@ static int build_huff_tree(VLC *vlc, Node *nodes, int head, int flags)
uint8_t xlat[256];
int pos = 0;
- get_tree_codes(bits, lens, xlat, nodes, head, 0, 0, &pos, no_zero_count);
+ get_tree_codes(bits, lens, xlat, nodes, head, 0, 0,
+ &pos, no_zero_count);
return ff_init_vlc_sparse(vlc, 9, pos, lens, 2, 2, bits, 4, 4, xlat, 1, 1, 0);
}
@@ -76,35 +79,37 @@ int ff_huff_build_tree(AVCodecContext *avctx, VLC *vlc, int nb_codes,
int cur_node;
int64_t sum = 0;
- for(i = 0; i < nb_codes; i++){
+ for (i = 0; i < nb_codes; i++) {
nodes[i].sym = i;
nodes[i].n0 = -2;
sum += nodes[i].count;
}
- if(sum >> 31) {
- av_log(avctx, AV_LOG_ERROR, "Too high symbol frequencies. Tree construction is not possible\n");
+ if (sum >> 31) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Too high symbol frequencies. "
+ "Tree construction is not possible\n");
return -1;
}
qsort(nodes, nb_codes, sizeof(Node), cmp);
cur_node = nb_codes;
nodes[nb_codes*2-1].count = 0;
- for(i = 0; i < nb_codes*2-1; i += 2){
+ for (i = 0; i < nb_codes * 2 - 1; i += 2) {
nodes[cur_node].sym = HNODE;
- nodes[cur_node].count = nodes[i].count + nodes[i+1].count;
+ nodes[cur_node].count = nodes[i].count + nodes[i + 1].count;
nodes[cur_node].n0 = i;
- for(j = cur_node; j > 0; j--){
- if(nodes[j].count > nodes[j-1].count ||
- (nodes[j].count == nodes[j-1].count &&
- (!(flags & FF_HUFFMAN_FLAG_HNODE_FIRST) ||
- nodes[j].n0==j-1 || nodes[j].n0==j-2 ||
- (nodes[j].sym!=HNODE && nodes[j-1].sym!=HNODE))))
+ for (j = cur_node; j > 0; j--) {
+ if (nodes[j].count > nodes[j - 1].count ||
+ (nodes[j].count == nodes[j - 1].count &&
+ (!(flags & FF_HUFFMAN_FLAG_HNODE_FIRST) ||
+ nodes[j].n0 == j - 1 || nodes[j].n0 == j - 2 ||
+ (nodes[j].sym!=HNODE && nodes[j-1].sym!=HNODE))))
break;
- FFSWAP(Node, nodes[j], nodes[j-1]);
+ FFSWAP(Node, nodes[j], nodes[j - 1]);
}
cur_node++;
}
- if(build_huff_tree(vlc, nodes, nb_codes*2-2, flags) < 0){
+ if (build_huff_tree(vlc, nodes, nb_codes * 2 - 2, flags) < 0) {
av_log(avctx, AV_LOG_ERROR, "Error building tree\n");
return -1;
}
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