overlayRotator.h revision 513ddc2124abf90c63af41999201f0d2031af0c8 
1/*
2* Copyright (c) 2011,2013 The Linux Foundation. All rights reserved.
3*
4* Redistribution and use in source and binary forms, with or without
5* modification, are permitted provided that the following conditions are
6* met:
7*    * Redistributions of source code must retain the above copyright
8*      notice, this list of conditions and the following disclaimer.
9*    * Redistributions in binary form must reproduce the above
10*      copyright notice, this list of conditions and the following
11*      disclaimer in the documentation and/or other materials provided
12*      with the distribution.
13*    * Neither the name of The Linux Foundation. nor the names of its
14*      contributors may be used to endorse or promote products derived
15*      from this software without specific prior written permission.
16*
17* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
18* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
20* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
21* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
26* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28*/
29
30#ifndef OVERlAY_ROTATOR_H
31#define OVERlAY_ROTATOR_H
32
33#include <stdlib.h>
34
35#include "mdpWrapper.h"
36#include "overlayUtils.h"
37#include "overlayMem.h"
38
39namespace overlay {
40
41/*
42   Manages the case where new rotator memory needs to be
43   allocated, before previous is freed, due to resolution change etc. If we make
44   rotator memory to be always max size, irrespctive of source resolution then
45   we don't need this RotMem wrapper. The inner class is sufficient.
46*/
47struct RotMem {
48    // Max rotator memory allocations
49    enum { MAX_ROT_MEM = 2};
50
51    //Manages the rotator buffer offsets.
52    struct Mem {
53        Mem();
54        ~Mem();
55        bool valid() { return m.valid(); }
56        bool close() { return m.close(); }
57        uint32_t size() const { return m.bufSz(); }
58        void setReleaseFd(const int& fence);
59        // Max rotator buffers
60        enum { ROT_NUM_BUFS = 2 };
61        // rotator data info dst offset
62        uint32_t mRotOffset[ROT_NUM_BUFS];
63        int mRelFence[ROT_NUM_BUFS];
64        // current offset slot from mRotOffset
65        uint32_t mCurrOffset;
66        OvMem m;
67    };
68
69    RotMem() : _curr(0) {}
70    Mem& curr() { return m[_curr % MAX_ROT_MEM]; }
71    const Mem& curr() const { return m[_curr % MAX_ROT_MEM]; }
72    Mem& prev() { return m[(_curr+1) % MAX_ROT_MEM]; }
73    RotMem& operator++() { ++_curr; return *this; }
74    void setReleaseFd(const int& fence) { curr().setReleaseFd(fence); }
75    bool close();
76    uint32_t _curr;
77    Mem m[MAX_ROT_MEM];
78};
79
80class Rotator
81{
82public:
83    enum { TYPE_MDP, TYPE_MDSS };
84    virtual ~Rotator();
85    virtual void setSource(const utils::Whf& wfh) = 0;
86    virtual void setCrop(const utils::Dim& crop) = 0;
87    virtual void setFlags(const utils::eMdpFlags& flags) = 0;
88    virtual void setTransform(const utils::eTransform& rot) = 0;
89    virtual bool commit() = 0;
90    virtual void setDownscale(int ds) = 0;
91    virtual int getDstMemId() const = 0;
92    virtual uint32_t getDstOffset() const = 0;
93    virtual uint32_t getDstFormat() const = 0;
94    virtual uint32_t getSessId() const = 0;
95    virtual bool queueBuffer(int fd, uint32_t offset) = 0;
96    virtual void dump() const = 0;
97    virtual void getDump(char *buf, size_t len) const = 0;
98    void setReleaseFd(const int& fence) { mMem.setReleaseFd(fence); }
99    static Rotator *getRotator();
100
101protected:
102    /* Rotator memory manager */
103    RotMem mMem;
104    explicit Rotator() {}
105    static uint32_t calcOutputBufSize(const utils::Whf& destWhf);
106
107private:
108    /*Returns rotator h/w type */
109    static int getRotatorHwType();
110    friend class RotMgr;
111};
112
113/*
114* MDP rot holds MDP's rotation related structures.
115*
116* */
117class MdpRot : public Rotator {
118public:
119    virtual ~MdpRot();
120    virtual void setSource(const utils::Whf& wfh);
121    virtual void setCrop(const utils::Dim& crop);
122    virtual void setFlags(const utils::eMdpFlags& flags);
123    virtual void setTransform(const utils::eTransform& rot);
124    virtual bool commit();
125    virtual void setDownscale(int ds);
126    virtual int getDstMemId() const;
127    virtual uint32_t getDstOffset() const;
128    virtual uint32_t getDstFormat() const;
129    virtual uint32_t getSessId() const;
130    virtual bool queueBuffer(int fd, uint32_t offset);
131    virtual void dump() const;
132    virtual void getDump(char *buf, size_t len) const;
133
134private:
135    explicit MdpRot();
136    bool init();
137    bool close();
138    void setRotations(uint32_t r);
139    bool enabled () const;
140    /* remap rot buffers */
141    bool remap(uint32_t numbufs);
142    bool open_i(uint32_t numbufs, uint32_t bufsz);
143    /* Deferred transform calculations */
144    void doTransform();
145    /* reset underlying data, basically memset 0 */
146    void reset();
147    /* return true if current rotator config is different
148     * than last known config */
149    bool rotConfChanged() const;
150    /* save mRotImgInfo to be last known good config*/
151    void save();
152    /* Calculates the rotator's o/p buffer size post the transform calcs and
153     * knowing the o/p format depending on whether fastYuv is enabled or not */
154    uint32_t calcOutputBufSize();
155
156    /* rot info*/
157    msm_rotator_img_info mRotImgInfo;
158    /* Last saved rot info*/
159    msm_rotator_img_info mLSRotImgInfo;
160    /* rot data */
161    msm_rotator_data_info mRotDataInfo;
162    /* Orientation */
163    utils::eTransform mOrientation;
164    /* rotator fd */
165    OvFD mFd;
166
167    friend Rotator* Rotator::getRotator();
168};
169
170/*
171+* MDSS Rot holds MDSS's rotation related structures.
172+*
173+* */
174class MdssRot : public Rotator {
175public:
176    virtual ~MdssRot();
177    virtual void setSource(const utils::Whf& wfh);
178    virtual void setCrop(const utils::Dim& crop);
179    virtual void setFlags(const utils::eMdpFlags& flags);
180    virtual void setTransform(const utils::eTransform& rot);
181    virtual bool commit();
182    virtual void setDownscale(int ds);
183    virtual int getDstMemId() const;
184    virtual uint32_t getDstOffset() const;
185    virtual uint32_t getDstFormat() const;
186    virtual uint32_t getSessId() const;
187    virtual bool queueBuffer(int fd, uint32_t offset);
188    virtual void dump() const;
189    virtual void getDump(char *buf, size_t len) const;
190
191private:
192    explicit MdssRot();
193    bool init();
194    bool close();
195    void setRotations(uint32_t r);
196    bool enabled () const;
197    /* remap rot buffers */
198    bool remap(uint32_t numbufs);
199    bool open_i(uint32_t numbufs, uint32_t bufsz);
200    /* Deferred transform calculations */
201    void doTransform();
202    /* reset underlying data, basically memset 0 */
203    void reset();
204    /* Calculates the rotator's o/p buffer size post the transform calcs and
205     * knowing the o/p format depending on whether fastYuv is enabled or not */
206    uint32_t calcOutputBufSize();
207    // Calculate the compressed o/p buffer size for BWC
208    uint32_t calcCompressedBufSize();
209
210    /* MdssRot info structure */
211    mdp_overlay   mRotInfo;
212    /* MdssRot data structure */
213    msmfb_overlay_data mRotData;
214    /* Orientation */
215    utils::eTransform mOrientation;
216    /* rotator fd */
217    OvFD mFd;
218    /* Enable/Disable Mdss Rot*/
219    bool mEnabled;
220
221    friend Rotator* Rotator::getRotator();
222};
223
224// Holder of rotator objects. Manages lifetimes
225class RotMgr {
226public:
227    //Maximum sessions based on VG pipes, since rotator is used only for videos.
228    //Even though we can have 4 mixer stages, that much may be unnecessary.
229    enum { MAX_ROT_SESS = 3 };
230    RotMgr();
231    ~RotMgr();
232    void configBegin();
233    void configDone();
234    overlay::Rotator *getNext();
235    void clear(); //Removes all instances
236    /* Returns rot dump.
237     * Expects a NULL terminated buffer of big enough size.
238     */
239    void getDump(char *buf, size_t len);
240    int getRotDevFd(); //Called on A-fam only
241private:
242    overlay::Rotator *mRot[MAX_ROT_SESS];
243    int mUseCount;
244    int mRotDevFd; //A-fam
245};
246
247
248} // overlay
249
250#endif // OVERlAY_ROTATOR_H
251