ArDrone SDK 1.8 added

[mardrone] / mardrone / ARDrone_SDK_Version_1_8_20110726 / ARDroneLib / VLIB / P264 / p264_intra_pred.h

diff --git a/mardrone/ARDrone_SDK_Version_1_8_20110726/ARDroneLib/VLIB/P264/p264_intra_pred.h b/mardrone/ARDrone_SDK_Version_1_8_20110726/ARDroneLib/VLIB/P264/p264_intra_pred.h
new file mode 100644 (file)
index 0000000..efc5b67
--- /dev/null
+++ b/mardrone/ARDrone_SDK_Version_1_8_20110726/ARDroneLib/VLIB/P264/p264_intra_pred.h
@@ -0,0 +1,82 @@
+#include <VP_Os/vp_os_types.h>
+#include "p264_common.h"
+
+
+// 4x4 block luma Availability :
+//         ------ ------
+//        |      |      |
+//        |  B   |  C   |
+//        |      |      |
+//  ------ ------ ------
+// |      |      |
+// |  A   |  E   |
+// |      |      |
+//  ------ ------
+//
+// E is the current block to be intra predicted based on block A,B,C. However depending on the location of E in the decoded frame
+// A,B or C are not necessarily available (i.e. already decoded).
+// Several cases are handled to make A,B,C available :
+// - In DC_4x4_MODE, if A AND B are on a frame boundary => A,B are supposed to be a uniform block of 128 and becomes available.
+// - In DIAGONAL_DL_4x4_MODE OR VERTICAL_LEFT_4x4_MODE, if C is not available => extend the down-right pixel of B on C. C becomes available.
+// - in other cases, modes that use unavailable blocks are forbidden.
+
+
+#define A_UNAVAILABLE (1<<0)
+#define B_UNAVAILABLE (1<<1)
+#define C_UNAVAILABLE (1<<2)
+
+// 4x4 intra block reconstruction order in luma MB
+//  -------------
+// |  0  1  4  5 |
+// |  2  3  6  7 |
+// |  8  9 12 13 |
+// | 10 11 14 15 |
+//  -------------
+
+// 4x4 block availability case in a frame (raster scan)
+// case 0 : all available
+// case 1 : A not available
+// case 2 : B not available
+// case 3 : A&B not available
+// case 4 : C not available
+// cases 1,2,3 affect DC_4x4_MODE
+// case 4 affects DIAGONAL_DL_4x4_MODE and VERTICAL_LEFT_4x4_MODE
+//  --------- ---------         ---------
+// | 3 2 2 2 | 2 2 2 2 |       | 2 2 2 2 |
+// | 1 4 0 4 | 0 4 0 4 |  ...  | 0 4 0 4 |
+// | 1 0 0 4 | 0 0 0 4 |       | 0 0 0 4 |
+// | 1 4 0 4 | 0 4 0 4 |       | 0 4 0 4 |
+//  --------- ---------         ---------
+// | 1 0 0 0 | 0 0 0 0 |       | 0 0 0 4 |
+// | 1 4 0 4 | 0 4 0 4 |  ...  | 0 4 0 4 |
+// | 1 0 0 4 | 0 0 0 4 |       | 0 0 0 4 |
+// | 1 4 0 4 | 0 4 0 4 |       | 0 4 0 4 |
+//  --------- ---------         ---------
+// |                                     |
+// |             ...                     |
+// |                                     |
+// |                                     |
+//  --------- ---------         ---------
+
+C_RESULT p264_intra_4x4_luma (intra_4x4_mode_t mode, uint8_t *picture, uint32_t picture_width, uint32_t x, uint32_t y, uint32_t linesize);
+
+// luma 16x16 block and chroma 8x8 block availability in a frame (raster scan)
+// the same rules apply as in 4x4 intra mode
+
+// 16x16 - 8x8 block availability mode in a frame (raster scan)
+// case 0 : all available
+// case 1 : A not available
+// case 2 : B not available
+// case 3 : A&B not available
+//  --- ---       ---
+// | 3 | 2 | ... | 2 |
+//  --- ---       ---
+// | 1 | 0 | ... | 0 |
+//  --- ---       ---
+// |      ...        |
+//  --- ---       ---
+
+C_RESULT p264_intra_16x16_luma (intra_16x16_luma_mode_t mode, uint8_t *picture, uint32_t x, uint32_t y, uint32_t linesize);
+
+C_RESULT p264_intra_8x8_chroma (intra_8x8_chroma_mode_t mode, uint8_t *picture, uint32_t x, uint32_t y, uint32_t linesize);
+