MB_TYPE_ACPRED is currently reused for MB_TYPE_REF0 by H.264, so that the value fits into an uint16_t. Given that MB_TYPE_ACPRED is not subject to any such restriction (apart from fitting into 32bits), it can be remapped to a hithereto unused bit. The then available bit will be declared to be codec-specific (i.e. unused by generic code), so that H.264 can use it for MB_TYPE_REF0 and so that it can be reused later for e.g. MB_TYPE_H261_FIL.
Unified · Split
| @@ -33,7 +33,7 @@ · 32 unmodified lines | ||
| 33 | 33 | #include "get_bits.h" |
| 34 | 34 | #include "h264_ps.h" |
| 35 | 35 | |
| 36 | −#define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit | |
| 36 | +#define MB_TYPE_REF0 MB_TYPE_CODEC_SPECIFIC | |
| 37 | 37 | #define MB_TYPE_8x8DCT 0x01000000 |
| 38 | 38 | |
| 39 | 39 | // This table must be here because scan8[constant] must be known at compiletime |
| @@ -109,7 +109,7 @@ static char get_type_mv_char(int mb_type) · 108 unmodified lines | ||
| 109 | 109 | // Type & MV direction |
| 110 | 110 | if (IS_PCM(mb_type)) |
| 111 | 111 | return 'P'; |
| 112 | − else if (IS_INTRA(mb_type) && IS_ACPRED(mb_type)) | |
| 112 | + else if (IS_ACPRED(mb_type)) | |
| 113 | 113 | return 'A'; |
| 114 | 114 | else if (IS_INTRA4x4(mb_type)) |
| 115 | 115 | return 'i'; |
| @@ -45,7 +45,6 @@ · 44 unmodified lines | ||
| 45 | 45 | #define MB_TYPE_8x8 (1 << 6) |
| 46 | 46 | #define MB_TYPE_INTERLACED (1 << 7) |
| 47 | 47 | #define MB_TYPE_DIRECT2 (1 << 8) // FIXME |
| 48 | −#define MB_TYPE_ACPRED (1 << 9) | |
| 49 | 48 | #define MB_TYPE_GMC (1 << 10) |
| 50 | 49 | #define MB_TYPE_SKIP (1 << 11) |
| 51 | 50 | #define MB_TYPE_P0L0 (1 << 12) |
| @@ -57,9 +56,13 @@ · 5 unmodified lines | ||
| 57 | 56 | #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1) |
| 58 | 57 | #define MB_TYPE_QUANT (1 << 16) |
| 59 | 58 | #define MB_TYPE_CBP (1 << 17) |
| 59 | +#define MB_TYPE_ACPRED (1 << 18) | |
| 60 | 60 | |
| 61 | 61 | #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 // default mb_type if there is just one type |
| 62 | 62 | |
| 63 | +// The following MB-type can be used by each codec as it sees fit. | |
| 64 | +#define MB_TYPE_CODEC_SPECIFIC (1 << 9) | |
| 65 | + | |
| 63 | 66 | #define IS_INTRA4x4(a) ((a) & MB_TYPE_INTRA4x4) |
| 64 | 67 | #define IS_INTRA16x16(a) ((a) & MB_TYPE_INTRA16x16) |
| 65 | 68 | #define IS_PCM(a) ((a) & MB_TYPE_INTRA_PCM) |