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author | Dmitry Kovalev <dkovalev@google.com> | 2013-05-07 18:19:50 -0700 |
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committer | Dmitry Kovalev <dkovalev@google.com> | 2013-05-07 18:19:50 -0700 |
commit | cd5113ceec8ebcb3276a6924906626e4b2c96bd7 (patch) | |
tree | d730b07ea44f3fda26c34b4c8351e2714e1a7cdd /vp9/encoder | |
parent | e8747866dc1c2eee2c366a34506acbdf87843378 (diff) | |
download | libvpx-cd5113ceec8ebcb3276a6924906626e4b2c96bd7.tar libvpx-cd5113ceec8ebcb3276a6924906626e4b2c96bd7.tar.gz libvpx-cd5113ceec8ebcb3276a6924906626e4b2c96bd7.tar.bz2 libvpx-cd5113ceec8ebcb3276a6924906626e4b2c96bd7.zip |
Replacing vp9_{write, write_literal, bit} macros with functions.
Also removing BOOL_CODER and using vp9_writer instead.
Change-Id: I31d1ec661872f7eb1fe869607b6ed0ebfbb03e01
Diffstat (limited to 'vp9/encoder')
-rw-r--r-- | vp9/encoder/vp9_boolhuff.c | 21 | ||||
-rw-r--r-- | vp9/encoder/vp9_boolhuff.h | 20 | ||||
-rw-r--r-- | vp9/encoder/vp9_treewriter.h | 4 |
3 files changed, 22 insertions, 23 deletions
diff --git a/vp9/encoder/vp9_boolhuff.c b/vp9/encoder/vp9_boolhuff.c index 0d8a1b814..e9436af8b 100644 --- a/vp9/encoder/vp9_boolhuff.c +++ b/vp9/encoder/vp9_boolhuff.c @@ -52,7 +52,7 @@ void vp9_stop_encode(vp9_writer *br) { int i; for (i = 0; i < 32; i++) - encode_bool(br, 0, 128); + vp9_write_bit(br, 0); // Ensure there's no ambigous collision with any index marker bytes if ((br->buffer[br->pos - 1] & 0xe0) == 0xc0) @@ -60,17 +60,10 @@ void vp9_stop_encode(vp9_writer *br) { } -void vp9_encode_value(vp9_writer *br, int data, int bits) { - int bit; - - for (bit = bits - 1; bit >= 0; bit--) - encode_bool(br, (1 & (data >> bit)), 0x80); -} - void vp9_encode_unsigned_max(vp9_writer *br, int data, int max) { assert(data <= max); while (max) { - encode_bool(br, data & 1, 128); + vp9_write_bit(br, data & 1); data >>= 1; max >>= 1; } @@ -98,10 +91,10 @@ void vp9_encode_uniform(vp9_writer *br, int v, int n) { if (l == 0) return; m = (1 << l) - n; if (v < m) - vp9_encode_value(br, v, l - 1); + vp9_write_literal(br, v, l - 1); else { - vp9_encode_value(br, m + ((v - m) >> 1), l - 1); - vp9_encode_value(br, (v - m) & 1, 1); + vp9_write_literal(br, m + ((v - m) >> 1), l - 1); + vp9_write_literal(br, (v - m) & 1, 1); } } @@ -127,12 +120,12 @@ void vp9_encode_term_subexp(vp9_writer *br, int word, int k, int num_syms) { break; } else { int t = (word >= mk + a); - vp9_encode_value(br, t, 1); + vp9_write_literal(br, t, 1); if (t) { i = i + 1; mk += a; } else { - vp9_encode_value(br, word - mk, b); + vp9_write_literal(br, word - mk, b); break; } } diff --git a/vp9/encoder/vp9_boolhuff.h b/vp9/encoder/vp9_boolhuff.h index a31e7de1e..58b40fb39 100644 --- a/vp9/encoder/vp9_boolhuff.h +++ b/vp9/encoder/vp9_boolhuff.h @@ -32,15 +32,11 @@ typedef struct { // Variables used to track bit costs without outputing to the bitstream unsigned int measure_cost; unsigned long bit_counter; -} BOOL_CODER; - -typedef BOOL_CODER vp9_writer; +} vp9_writer; extern const unsigned int vp9_prob_cost[256]; void vp9_start_encode(vp9_writer *bc, uint8_t *buffer); - -void vp9_encode_value(vp9_writer *br, int data, int bits); void vp9_encode_unsigned_max(vp9_writer *br, int data, int max); void vp9_stop_encode(vp9_writer *bc); @@ -54,7 +50,7 @@ int vp9_recenter_nonneg(int v, int m); DECLARE_ALIGNED(16, extern const unsigned char, vp9_norm[256]); -static void encode_bool(vp9_writer *br, int bit, int probability) { +static void vp9_write(vp9_writer *br, int bit, int probability) { unsigned int split; int count = br->count; unsigned int range = br->range; @@ -113,4 +109,16 @@ static void encode_bool(vp9_writer *br, int bit, int probability) { br->range = range; } +static void vp9_write_bit(vp9_writer *w, int bit) { + vp9_write(w, bit, 128); // vp9_prob_half +} + +static void vp9_write_literal(vp9_writer *w, int data, int bits) { + int bit; + + for (bit = bits - 1; bit >= 0; bit--) + vp9_write_bit(w, 1 & (data >> bit)); +} + + #endif // VP9_ENCODER_VP9_BOOLHUFF_H_ diff --git a/vp9/encoder/vp9_treewriter.h b/vp9/encoder/vp9_treewriter.h index 35059365a..eeda5cda7 100644 --- a/vp9/encoder/vp9_treewriter.h +++ b/vp9/encoder/vp9_treewriter.h @@ -19,9 +19,7 @@ #include "vp9/encoder/vp9_boolhuff.h" /* for now */ -#define vp9_write encode_bool -#define vp9_write_literal vp9_encode_value -#define vp9_write_bit(w, v) vp9_write((w), (v), vp9_prob_half) + #define vp9_write_prob(w, v) vp9_write_literal((w), (v), 8) /* Approximate length of an encoded bool in 256ths of a bit at given prob */ |