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| author | Alex Converse <alex.converse@gmail.com> | 2009-09-21 04:32:51 +0000 |
|---|---|---|
| committer | Alex Converse <alex.converse@gmail.com> | 2009-09-21 04:32:51 +0000 |
| commit | f5e82fec3d879e50789ec46e25d630a210467477 (patch) | |
| tree | acb446bfa5c762209c2f32cd8d5cc63ee35acdfb | |
| parent | 9072c29e40284d2ddf9d1f2cc0921e20a91f89c6 (diff) | |
| download | ffmpeg-f5e82fec3d879e50789ec46e25d630a210467477.tar.gz | |
aacenc: Use preprocessor constants for trellis states and stages.
Originally committed as revision 19948 to svn://svn.ffmpeg.org/ffmpeg/trunk
| -rw-r--r-- | libavcodec/aaccoder.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/libavcodec/aaccoder.c b/libavcodec/aaccoder.c index a6e69f0ac6..0a51aa7759 100644 --- a/libavcodec/aaccoder.c +++ b/libavcodec/aaccoder.c @@ -463,6 +463,9 @@ typedef struct TrellisPath { int max_val; } TrellisPath; +#define TRELLIS_STAGES 121 +#define TRELLIS_STATES 256 + static void search_for_quantizers_anmr(AVCodecContext *avctx, AACEncContext *s, SingleChannelElement *sce, const float lambda) @@ -470,19 +473,19 @@ static void search_for_quantizers_anmr(AVCodecContext *avctx, AACEncContext *s, int q, w, w2, g, start = 0; int i, j; int idx; - TrellisPath paths[121][256]; - int bandaddr[121]; + TrellisPath paths[TRELLIS_STAGES][TRELLIS_STATES]; + int bandaddr[TRELLIS_STAGES]; int minq; float mincost; - for (i = 0; i < 256; i++) { + for (i = 0; i < TRELLIS_STATES; i++) { paths[0][i].cost = 0.0f; paths[0][i].prev = -1; paths[0][i].min_val = i; paths[0][i].max_val = i; } - for (j = 1; j < 121; j++) { - for (i = 0; i < 256; i++) { + for (j = 1; j < TRELLIS_STAGES; j++) { + for (i = 0; i < TRELLIS_STATES; i++) { paths[j][i].cost = INFINITY; paths[j][i].prev = -2; paths[j][i].min_val = INT_MAX; @@ -538,7 +541,7 @@ static void search_for_quantizers_anmr(AVCodecContext *avctx, AACEncContext *s, dist = FFMIN(dist, dists[i]); minrd = FFMIN(minrd, dist); - for (i = FFMAX(q - SCALE_MAX_DIFF, 0); i < FFMIN(q + SCALE_MAX_DIFF, 256); i++) { + for (i = FFMAX(q - SCALE_MAX_DIFF, 0); i < FFMIN(q + SCALE_MAX_DIFF, TRELLIS_STATES); i++) { float cost; int minv, maxv; if (isinf(paths[idx - 1][i].cost)) @@ -556,7 +559,7 @@ static void search_for_quantizers_anmr(AVCodecContext *avctx, AACEncContext *s, } } } else { - for (q = 0; q < 256; q++) { + for (q = 0; q < TRELLIS_STATES; q++) { if (!isinf(paths[idx - 1][q].cost)) { paths[idx][q].cost = paths[idx - 1][q].cost + 1; paths[idx][q].prev = q; @@ -564,7 +567,7 @@ static void search_for_quantizers_anmr(AVCodecContext *avctx, AACEncContext *s, paths[idx][q].max_val = FFMAX(paths[idx - 1][q].max_val, q); continue; } - for (i = FFMAX(q - SCALE_MAX_DIFF, 0); i < FFMIN(q + SCALE_MAX_DIFF, 256); i++) { + for (i = FFMAX(q - SCALE_MAX_DIFF, 0); i < FFMIN(q + SCALE_MAX_DIFF, TRELLIS_STATES); i++) { float cost; int minv, maxv; if (isinf(paths[idx - 1][i].cost)) @@ -589,7 +592,7 @@ static void search_for_quantizers_anmr(AVCodecContext *avctx, AACEncContext *s, idx--; mincost = paths[idx][0].cost; minq = 0; - for (i = 1; i < 256; i++) { + for (i = 1; i < TRELLIS_STATES; i++) { if (paths[idx][i].cost < mincost) { mincost = paths[idx][i].cost; minq = i; |