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 #ifndef II420_COLOR_CONVERTER_H 18 19 #define II420_COLOR_CONVERTER_H 20 21 #include <stdint.h> 22 #include <android/rect.h> 23 24 #ifdef __cplusplus 25 extern "C" { 26 #endif 27 28 typedef struct II420ColorConverter { 29 30 /* 31 * getDecoderOutputFormat 32 * Returns the color format (OMX_COLOR_FORMATTYPE) of the decoder output. 33 * If it is I420 (OMX_COLOR_FormatYUV420Planar), no conversion is needed, 34 * and convertDecoderOutputToI420() can be a no-op. 35 */ 36 int (*getDecoderOutputFormat)(); 37 38 /* 39 * convertDecoderOutputToI420 40 * @Desc Converts from the decoder output format to I420 format. 41 * @note Caller (e.g. VideoEditor) owns the buffers 42 * @param decoderBits (IN) Pointer to the buffer contains decoder output 43 * @param decoderWidth (IN) Buffer width, as reported by the decoder 44 * metadata (kKeyWidth) 45 * @param decoderHeight (IN) Buffer height, as reported by the decoder 46 * metadata (kKeyHeight) 47 * @param decoderRect (IN) The rectangle of the actual frame, as 48 * reported by decoder metadata (kKeyCropRect) 49 * @param dstBits (OUT) Pointer to the output I420 buffer 50 * @return -1 Any error 51 * @return 0 No Error 52 */ 53 int (*convertDecoderOutputToI420)( 54 void* decoderBits, int decoderWidth, int decoderHeight, 55 ARect decoderRect, void* dstBits); 56 57 /* 58 * getEncoderIntputFormat 59 * Returns the color format (OMX_COLOR_FORMATTYPE) of the encoder input. 60 * If it is I420 (OMX_COLOR_FormatYUV420Planar), no conversion is needed, 61 * and convertI420ToEncoderInput() and getEncoderInputBufferInfo() can 62 * be no-ops. 63 */ 64 int (*getEncoderInputFormat)(); 65 66 /* convertI420ToEncoderInput 67 * @Desc This function converts from I420 to the encoder input format 68 * @note Caller (e.g. VideoEditor) owns the buffers 69 * @param srcBits (IN) Pointer to the input I420 buffer 70 * @param srcWidth (IN) Width of the I420 frame 71 * @param srcHeight (IN) Height of the I420 frame 72 * @param encoderWidth (IN) Encoder buffer width, as calculated by 73 * getEncoderBufferInfo() 74 * @param encoderHeight (IN) Encoder buffer height, as calculated by 75 * getEncoderBufferInfo() 76 * @param encoderRect (IN) Rect coordinates of the actual frame inside 77 * the encoder buffer, as calculated by 78 * getEncoderBufferInfo(). 79 * @param encoderBits (OUT) Pointer to the output buffer. The size of 80 * this buffer is calculated by 81 * getEncoderBufferInfo() 82 * @return -1 Any error 83 * @return 0 No Error 84 */ 85 int (*convertI420ToEncoderInput)( 86 void* srcBits, int srcWidth, int srcHeight, 87 int encoderWidth, int encoderHeight, ARect encoderRect, 88 void* encoderBits); 89 90 /* getEncoderInputBufferInfo 91 * @Desc This function returns metadata for the encoder input buffer 92 * based on the actual I420 frame width and height. 93 * @note This API should be be used to obtain the necessary information 94 * before calling convertI420ToEncoderInput(). 95 * VideoEditor knows only the width and height of the I420 buffer, 96 * but it also needs know the width, height, and size of the 97 * encoder input buffer. The encoder input buffer width and height 98 * are used to set the metadata for the encoder. 99 * @param srcWidth (IN) Width of the I420 frame 100 * @param srcHeight (IN) Height of the I420 frame 101 * @param encoderWidth (OUT) Encoder buffer width needed 102 * @param encoderHeight (OUT) Encoder buffer height needed 103 * @param encoderRect (OUT) Rect coordinates of the actual frame inside 104 * the encoder buffer 105 * @param encoderBufferSize (OUT) The size of the buffer that need to be 106 * allocated by the caller before invoking 107 * convertI420ToEncoderInput(). 108 * @return -1 Any error 109 * @return 0 No Error 110 */ 111 int (*getEncoderInputBufferInfo)( 112 int srcWidth, int srcHeight, 113 int* encoderWidth, int* encoderHeight, 114 ARect* encoderRect, int* encoderBufferSize); 115 116 } II420ColorConverter; 117 118 /* The only function that the shared library needs to expose: It fills the 119 function pointers in II420ColorConverter */ 120 void getI420ColorConverter(II420ColorConverter *converter); 121 122 #if defined(__cplusplus) 123 } 124 #endif 125 126 #endif // II420_COLOR_CONVERTER_H 127
