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describe rd-opt levels introduce VP8RDLevel enum

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makes things somehow clearer compared to using magic constants

Change-Id: I9115cee71252511f722806427ee8a97f1a1cd95f
This commit is contained in:
Pascal Massimino
2013-02-26 02:20:59 -08:00
parent b7eaa85d6a
commit 5189957e07
4 changed files with 26 additions and 20 deletions
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16
src/enc/vp8enci.h
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@ -57,6 +57,13 @@ enum { NUM_MB_SEGMENTS = 4,
MAX_VARIABLE_LEVEL = 67 // last (inclusive) level with variable cost
};
typedef enum { // Rate-distortion optimization levels
RD_OPT_NONE = 0, // no rd-opt
RD_OPT_BASIC = 1, // basic scoring (no trellis)
RD_OPT_TRELLIS = 2, // perform trellis-quant on the final decision only
RD_OPT_TRELLIS_ALL = 3 // trellis-quant for every scoring (much slower)
} VP8RDLevel;
// YUV-cache parameters. Cache is 16-pixels wide.
// The original or reconstructed samples can be accessed using VP8Scan[]
// The predicted blocks can be accessed using offsets to yuv_p_ and
@ -405,9 +412,9 @@ struct VP8Encoder {
int block_count_[3];
// quality/speed settings
int method_; // 0=fastest, 6=best/slowest.
int rd_opt_level_; // Deduced from method_.
int max_i4_header_bits_; // partition #0 safeness factor
int method_; // 0=fastest, 6=best/slowest.
VP8RDLevel rd_opt_level_; // Deduced from method_.
int max_i4_header_bits_; // partition #0 safeness factor
// Memory
VP8MBInfo* mb_info_; // contextual macroblock infos (mb_w_ + 1)
@ -486,7 +493,8 @@ int VP8EncAnalyze(VP8Encoder* const enc);
// Sets up segment's quantization values, base_quant_ and filter strengths.
void VP8SetSegmentParams(VP8Encoder* const enc, float quality);
// Pick best modes and fills the levels. Returns true if skipped.
int VP8Decimate(VP8EncIterator* const it, VP8ModeScore* const rd, int rd_opt);
int VP8Decimate(VP8EncIterator* const it, VP8ModeScore* const rd,
VP8RDLevel rd_opt);
// in alpha.c
void VP8EncInitAlpha(VP8Encoder* const enc); // initialize alpha compression