vpx/vp8/common/onyxc_int.h
Timothy B. Terriberry b71962fdc9 Add runtime CPU detection support for ARM.
The primary goal is to allow a binary to be built which supports
 NEON, but can fall back to non-NEON routines, since some Android
 devices do not have NEON, even if they are otherwise ARMv7 (e.g.,
 Tegra).
The configure-generated flags HAVE_ARMV7, etc., are used to decide
 which versions of each function to build, and when
 CONFIG_RUNTIME_CPU_DETECT is enabled, the correct version is chosen
 at run time.
In order for this to work, the CFLAGS must be set to something
 appropriate (e.g., without -mfpu=neon for ARMv7, and with
 appropriate -march and -mcpu for even earlier configurations), or
 the native C code will not be able to run.
The ASFLAGS must remain set for the most advanced instruction set
 required at build time, since the ARM assembler will refuse to emit
 them otherwise.
I have not attempted to make any changes to configure to do this
 automatically.
Doing so will probably require the addition of new configure options.

Many of the hooks for RTCD on ARM were already there, but a lot of
 the code had bit-rotted, and a good deal of the ARM-specific code
 is not integrated into the RTCD structs at all.
I did not try to resolve the latter, merely to add the minimal amount
 of protection around them to allow RTCD to work.
Those functions that were called based on an ifdef at the calling
 site were expanded to check the RTCD flags at that site, but they
 should be added to an RTCD struct somewhere in the future.
The functions invoked with global function pointers still are, but
 these should be moved into an RTCD struct for thread safety (I
 believe every platform currently supported has atomic pointer
 stores, but this is not guaranteed).

The encoder's boolhuff functions did not even have _c and armv7
 suffixes, and the correct version was resolved at link time.
The token packing functions did have appropriate suffixes, but the
 version was selected with a define, with no associated RTCD struct.
However, for both of these, the only armv7 instruction they actually
 used was rbit, and this was completely superfluous, so I reworked
 them to avoid it.
The only non-ARMv4 instruction remaining in them is clz, which is
 ARMv5 (not even ARMv5TE is required).
Considering that there are no ARM-specific configs which are not at
 least ARMv5TE, I did not try to detect these at runtime, and simply
 enable them for ARMv5 and above.

Finally, the NEON register saving code was completely non-reentrant,
 since it saved the registers to a global, static variable.
I moved the storage for this onto the stack.
A single binary built with this code was tested on an ARM11 (ARMv6)
 and a Cortex A8 (ARMv7 w/NEON), for both the encoder and decoder,
 and produced identical output, while using the correct accelerated
 functions on each.
I did not test on any earlier processors.

Change-Id: I45cbd63a614f4554c3b325c45d46c0806f009eaa
2010-10-25 09:23:29 -04:00

209 lines
5.5 KiB
C

/*
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef __INC_VP8C_INT_H
#define __INC_VP8C_INT_H
#include "vpx_config.h"
#include "vpx/internal/vpx_codec_internal.h"
#include "loopfilter.h"
#include "entropymv.h"
#include "entropy.h"
#include "idct.h"
#include "recon.h"
#include "postproc.h"
//#ifdef PACKET_TESTING
#include "header.h"
//#endif
/* Create/destroy static data structures. */
void vp8_initialize_common(void);
#define MINQ 0
#define MAXQ 127
#define QINDEX_RANGE (MAXQ + 1)
#define NUM_YV12_BUFFERS 4
typedef struct frame_contexts
{
vp8_prob bmode_prob [VP8_BINTRAMODES-1];
vp8_prob ymode_prob [VP8_YMODES-1]; /* interframe intra mode probs */
vp8_prob uv_mode_prob [VP8_UV_MODES-1];
vp8_prob sub_mv_ref_prob [VP8_SUBMVREFS-1];
vp8_prob coef_probs [BLOCK_TYPES] [COEF_BANDS] [PREV_COEF_CONTEXTS] [vp8_coef_tokens-1];
MV_CONTEXT mvc[2];
MV_CONTEXT pre_mvc[2]; //not to caculate the mvcost for the frame if mvc doesn't change.
} FRAME_CONTEXT;
typedef enum
{
ONE_PARTITION = 0,
TWO_PARTITION = 1,
FOUR_PARTITION = 2,
EIGHT_PARTITION = 3
} TOKEN_PARTITION;
typedef enum
{
RECON_CLAMP_REQUIRED = 0,
RECON_CLAMP_NOTREQUIRED = 1
} CLAMP_TYPE;
typedef enum
{
SIXTAP = 0,
BILINEAR = 1
} INTERPOLATIONFILTERTYPE;
typedef struct VP8_COMMON_RTCD
{
#if CONFIG_RUNTIME_CPU_DETECT
vp8_idct_rtcd_vtable_t idct;
vp8_recon_rtcd_vtable_t recon;
vp8_subpix_rtcd_vtable_t subpix;
vp8_loopfilter_rtcd_vtable_t loopfilter;
vp8_postproc_rtcd_vtable_t postproc;
int flags;
#else
int unused;
#endif
} VP8_COMMON_RTCD;
typedef struct VP8Common
{
struct vpx_internal_error_info error;
DECLARE_ALIGNED(16, short, Y1dequant[QINDEX_RANGE][16]);
DECLARE_ALIGNED(16, short, Y2dequant[QINDEX_RANGE][16]);
DECLARE_ALIGNED(16, short, UVdequant[QINDEX_RANGE][16]);
int Width;
int Height;
int horiz_scale;
int vert_scale;
YUV_TYPE clr_type;
CLAMP_TYPE clamp_type;
YV12_BUFFER_CONFIG *frame_to_show;
YV12_BUFFER_CONFIG yv12_fb[NUM_YV12_BUFFERS];
int fb_idx_ref_cnt[NUM_YV12_BUFFERS];
int new_fb_idx, lst_fb_idx, gld_fb_idx, alt_fb_idx;
YV12_BUFFER_CONFIG post_proc_buffer;
YV12_BUFFER_CONFIG temp_scale_frame;
FRAME_TYPE last_frame_type; //Add to check if vp8_frame_init_loop_filter() can be skipped.
FRAME_TYPE frame_type;
int show_frame;
int frame_flags;
int MBs;
int mb_rows;
int mb_cols;
int mode_info_stride;
// prfile settings
int mb_no_coeff_skip;
int no_lpf;
int simpler_lpf;
int use_bilinear_mc_filter;
int full_pixel;
int base_qindex;
int last_kf_gf_q; // Q used on the last GF or KF
int y1dc_delta_q;
int y2dc_delta_q;
int y2ac_delta_q;
int uvdc_delta_q;
int uvac_delta_q;
unsigned int frames_since_golden;
unsigned int frames_till_alt_ref_frame;
/* We allocate a MODE_INFO struct for each macroblock, together with
an extra row on top and column on the left to simplify prediction. */
MODE_INFO *mip; /* Base of allocated array */
MODE_INFO *mi; /* Corresponds to upper left visible macroblock */
INTERPOLATIONFILTERTYPE mcomp_filter_type;
LOOPFILTERTYPE last_filter_type;
LOOPFILTERTYPE filter_type;
loop_filter_info lf_info[MAX_LOOP_FILTER+1];
prototype_loopfilter_block((*lf_mbv));
prototype_loopfilter_block((*lf_mbh));
prototype_loopfilter_block((*lf_bv));
prototype_loopfilter_block((*lf_bh));
int filter_level;
int last_sharpness_level;
int sharpness_level;
int refresh_last_frame; // Two state 0 = NO, 1 = YES
int refresh_golden_frame; // Two state 0 = NO, 1 = YES
int refresh_alt_ref_frame; // Two state 0 = NO, 1 = YES
int copy_buffer_to_gf; // 0 none, 1 Last to GF, 2 ARF to GF
int copy_buffer_to_arf; // 0 none, 1 Last to ARF, 2 GF to ARF
int refresh_entropy_probs; // Two state 0 = NO, 1 = YES
int ref_frame_sign_bias[MAX_REF_FRAMES]; // Two state 0, 1
// Y,U,V,Y2
ENTROPY_CONTEXT_PLANES *above_context; // row of context for each plane
ENTROPY_CONTEXT_PLANES left_context; // (up to) 4 contexts ""
// keyframe block modes are predicted by their above, left neighbors
vp8_prob kf_bmode_prob [VP8_BINTRAMODES] [VP8_BINTRAMODES] [VP8_BINTRAMODES-1];
vp8_prob kf_ymode_prob [VP8_YMODES-1]; /* keyframe "" */
vp8_prob kf_uv_mode_prob [VP8_UV_MODES-1];
FRAME_CONTEXT lfc; // last frame entropy
FRAME_CONTEXT fc; // this frame entropy
unsigned int current_video_frame;
int near_boffset[3];
int version;
TOKEN_PARTITION multi_token_partition;
#ifdef PACKET_TESTING
VP8_HEADER oh;
#endif
double bitrate;
double framerate;
#if CONFIG_RUNTIME_CPU_DETECT
VP8_COMMON_RTCD rtcd;
#endif
struct postproc_state postproc_state;
} VP8_COMMON;
void vp8_adjust_mb_lf_value(MACROBLOCKD *mbd, int *filter_level);
void vp8_init_loop_filter(VP8_COMMON *cm);
void vp8_frame_init_loop_filter(loop_filter_info *lfi, int frame_type);
extern void vp8_loop_filter_frame(VP8_COMMON *cm, MACROBLOCKD *mbd, int filt_val);
#endif