SurfaceTextureLayer.cpp revision 5bfc24515bb5c8ea7975f72d538df37753733a2f 
1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <stdlib.h>
18#include <stdint.h>
19#include <sys/types.h>
20
21#include <utils/Errors.h>
22
23#include "Layer.h"
24#include "SurfaceTextureLayer.h"
25
26namespace android {
27// ---------------------------------------------------------------------------
28
29
30SurfaceTextureLayer::SurfaceTextureLayer(GLuint tex, const sp<Layer>& layer)
31    : SurfaceTexture(tex), mLayer(layer) {
32}
33
34SurfaceTextureLayer::~SurfaceTextureLayer() {
35}
36
37
38status_t SurfaceTextureLayer::setDefaultBufferSize(uint32_t w, uint32_t h)
39{
40    //LOGD("%s, w=%u, h=%u", __PRETTY_FUNCTION__, w, h);
41    return SurfaceTexture::setDefaultBufferSize(w, h);
42}
43
44status_t SurfaceTextureLayer::setDefaultBufferFormat(uint32_t format)
45{
46    mDefaultFormat = format;
47    return NO_ERROR;
48}
49
50status_t SurfaceTextureLayer::setBufferCount(int bufferCount) {
51    status_t res = SurfaceTexture::setBufferCount(bufferCount);
52    return res;
53}
54
55status_t SurfaceTextureLayer::queueBuffer(int buf, int64_t timestamp,
56        uint32_t* outWidth, uint32_t* outHeight, uint32_t* outTransform) {
57
58    status_t res = SurfaceTexture::queueBuffer(buf, timestamp,
59            outWidth, outHeight, outTransform);
60
61    sp<Layer> layer(mLayer.promote());
62    if (layer != NULL) {
63        uint32_t orientation = layer->getOrientation();
64        if (orientation & Transform::ROT_INVALID) {
65            orientation = 0;
66        }
67        *outTransform = orientation;
68    }
69
70    return res;
71}
72
73status_t SurfaceTextureLayer::dequeueBuffer(int *buf,
74        uint32_t w, uint32_t h, uint32_t format, uint32_t usage) {
75
76    status_t res(NO_INIT);
77    sp<Layer> layer(mLayer.promote());
78    if (layer != NULL) {
79        if (format == 0)
80            format = mDefaultFormat;
81        uint32_t effectiveUsage = layer->getEffectiveUsage(usage);
82        //LOGD("%s, w=%u, h=%u, format=%u, usage=%08x, effectiveUsage=%08x",
83        //        __PRETTY_FUNCTION__, w, h, format, usage, effectiveUsage);
84        res = SurfaceTexture::dequeueBuffer(buf, w, h, format, effectiveUsage);
85    }
86    return res;
87}
88
89status_t SurfaceTextureLayer::connect(int api,
90        uint32_t* outWidth, uint32_t* outHeight, uint32_t* outTransform) {
91    status_t err = SurfaceTexture::connect(api,
92            outWidth, outHeight, outTransform);
93    if (err == NO_ERROR) {
94        sp<Layer> layer(mLayer.promote());
95        if (layer != NULL) {
96            uint32_t orientation = layer->getOrientation();
97            if (orientation & Transform::ROT_INVALID) {
98                orientation = 0;
99            }
100            *outTransform = orientation;
101        }
102        switch(api) {
103            case NATIVE_WINDOW_API_MEDIA:
104            case NATIVE_WINDOW_API_CAMERA:
105                // Camera preview and videos are rate-limited on the producer
106                // side.  If enabled for this build, we use async mode to always
107                // show the most recent frame at the cost of requiring an
108                // additional buffer.
109#ifndef NEVER_DEFAULT_TO_ASYNC_MODE
110                err = setSynchronousMode(false);
111                break;
112#endif
113                // fall through to set synchronous mode when not defaulting to
114                // async mode.
115            deafult:
116                err = setSynchronousMode(true);
117                break;
118        }
119        if (err != NO_ERROR) {
120            disconnect(api);
121        }
122    }
123    return err;
124}
125
126// ---------------------------------------------------------------------------
127}; // namespace android
128