| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * This file is part of FFmpeg. | ||
| 3 | * | ||
| 4 | * FFmpeg is free software; you can redistribute it and/or | ||
| 5 | * modify it under the terms of the GNU Lesser General Public | ||
| 6 | * License as published by the Free Software Foundation; either | ||
| 7 | * version 2.1 of the License, or (at your option) any later version. | ||
| 8 | * | ||
| 9 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 12 | * Lesser General Public License for more details. | ||
| 13 | * | ||
| 14 | * You should have received a copy of the GNU Lesser General Public | ||
| 15 | * License along with FFmpeg; if not, write to the Free Software | ||
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 17 | */ | ||
| 18 | |||
| 19 | /** | ||
| 20 | * Header providing the internals of AVHWAccel. | ||
| 21 | */ | ||
| 22 | |||
| 23 | #ifndef AVCODEC_HWACCEL_INTERNAL_H | ||
| 24 | #define AVCODEC_HWACCEL_INTERNAL_H | ||
| 25 | |||
| 26 | #include <stdint.h> | ||
| 27 | |||
| 28 | #include "avcodec.h" | ||
| 29 | #include "libavutil/refstruct.h" | ||
| 30 | |||
| 31 | #define HWACCEL_CAP_ASYNC_SAFE (1 << 0) | ||
| 32 | #define HWACCEL_CAP_THREAD_SAFE (1 << 1) | ||
| 33 | |||
| 34 | typedef struct FFHWAccel { | ||
| 35 | /** | ||
| 36 | * The public AVHWAccel. See avcodec.h for it. | ||
| 37 | */ | ||
| 38 | AVHWAccel p; | ||
| 39 | |||
| 40 | /** | ||
| 41 | * Allocate a custom buffer | ||
| 42 | */ | ||
| 43 | int (*alloc_frame)(AVCodecContext *avctx, AVFrame *frame); | ||
| 44 | |||
| 45 | /** | ||
| 46 | * Called at the beginning of each frame or field picture. | ||
| 47 | * | ||
| 48 | * Meaningful frame information (codec specific) is guaranteed to | ||
| 49 | * be parsed at this point. This function is mandatory. | ||
| 50 | * | ||
| 51 | * Note that buf can be NULL along with buf_size set to 0. | ||
| 52 | * Otherwise, this means the whole frame is available at this point. | ||
| 53 | * | ||
| 54 | * @param avctx the codec context | ||
| 55 | * @param buf_ref the frame data buffer reference (optional) | ||
| 56 | * @param buf the frame data buffer base | ||
| 57 | * @param buf_size the size of the frame in bytes | ||
| 58 | * @return zero if successful, a negative value otherwise | ||
| 59 | */ | ||
| 60 | int (*start_frame)(AVCodecContext *avctx, const AVBufferRef *buf_ref, | ||
| 61 | const uint8_t *buf, uint32_t buf_size); | ||
| 62 | |||
| 63 | /** | ||
| 64 | * Callback for parameter data (SPS/PPS/VPS etc). | ||
| 65 | * | ||
| 66 | * Useful for hardware decoders which keep persistent state about the | ||
| 67 | * video parameters, and need to receive any changes to update that state. | ||
| 68 | * | ||
| 69 | * @param avctx the codec context | ||
| 70 | * @param type the nal unit type | ||
| 71 | * @param buf the nal unit data buffer | ||
| 72 | * @param buf_size the size of the nal unit in bytes | ||
| 73 | * @return zero if successful, a negative value otherwise | ||
| 74 | */ | ||
| 75 | int (*decode_params)(AVCodecContext *avctx, int type, const uint8_t *buf, uint32_t buf_size); | ||
| 76 | |||
| 77 | /** | ||
| 78 | * Callback for each slice. | ||
| 79 | * | ||
| 80 | * Meaningful slice information (codec specific) is guaranteed to | ||
| 81 | * be parsed at this point. This function is mandatory. | ||
| 82 | * | ||
| 83 | * @param avctx the codec context | ||
| 84 | * @param buf the slice data buffer base | ||
| 85 | * @param buf_size the size of the slice in bytes | ||
| 86 | * @return zero if successful, a negative value otherwise | ||
| 87 | */ | ||
| 88 | int (*decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size); | ||
| 89 | |||
| 90 | /** | ||
| 91 | * Called at the end of each frame or field picture. | ||
| 92 | * | ||
| 93 | * The whole picture is parsed at this point and can now be sent | ||
| 94 | * to the hardware accelerator. This function is mandatory. | ||
| 95 | * | ||
| 96 | * @param avctx the codec context | ||
| 97 | * @return zero if successful, a negative value otherwise | ||
| 98 | */ | ||
| 99 | int (*end_frame)(AVCodecContext *avctx); | ||
| 100 | |||
| 101 | /** | ||
| 102 | * Size of per-frame hardware accelerator private data. | ||
| 103 | * | ||
| 104 | * Private data is allocated with av_mallocz() before | ||
| 105 | * AVCodecContext.get_buffer() and deallocated after | ||
| 106 | * AVCodecContext.release_buffer(). | ||
| 107 | */ | ||
| 108 | int frame_priv_data_size; | ||
| 109 | |||
| 110 | /** | ||
| 111 | * Size of the private data to allocate in | ||
| 112 | * AVCodecInternal.hwaccel_priv_data. | ||
| 113 | */ | ||
| 114 | int priv_data_size; | ||
| 115 | |||
| 116 | /** | ||
| 117 | * Internal hwaccel capabilities. | ||
| 118 | */ | ||
| 119 | int caps_internal; | ||
| 120 | |||
| 121 | /** | ||
| 122 | * Initialize the hwaccel private data. | ||
| 123 | * | ||
| 124 | * This will be called from ff_get_format(), after hwaccel and | ||
| 125 | * hwaccel_context are set and the hwaccel private data in AVCodecInternal | ||
| 126 | * is allocated. | ||
| 127 | */ | ||
| 128 | int (*init)(AVCodecContext *avctx); | ||
| 129 | |||
| 130 | /** | ||
| 131 | * Uninitialize the hwaccel private data. | ||
| 132 | * | ||
| 133 | * This will be called from get_format() or ff_codec_close(), after hwaccel | ||
| 134 | * and hwaccel_context are already uninitialized. | ||
| 135 | */ | ||
| 136 | int (*uninit)(AVCodecContext *avctx); | ||
| 137 | |||
| 138 | /** | ||
| 139 | * Fill the given hw_frames context with current codec parameters. Called | ||
| 140 | * from get_format. Refer to avcodec_get_hw_frames_parameters() for | ||
| 141 | * details. | ||
| 142 | * | ||
| 143 | * This CAN be called before AVHWAccel.init is called, and you must assume | ||
| 144 | * that avctx->hwaccel_priv_data is invalid. | ||
| 145 | */ | ||
| 146 | int (*frame_params)(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx); | ||
| 147 | |||
| 148 | /** | ||
| 149 | * Copy necessary context variables from a previous thread context to the current one. | ||
| 150 | * For thread-safe hwaccels only. | ||
| 151 | */ | ||
| 152 | int (*update_thread_context)(AVCodecContext *dst, const AVCodecContext *src); | ||
| 153 | |||
| 154 | /** | ||
| 155 | * Callback to free the hwaccel-specific frame data. | ||
| 156 | * | ||
| 157 | * @param hwctx a pointer to an AVHWDeviceContext. | ||
| 158 | * @param data the per-frame hardware accelerator private data to be freed. | ||
| 159 | */ | ||
| 160 | void (*free_frame_priv)(AVRefStructOpaque hwctx, void *data); | ||
| 161 | |||
| 162 | /** | ||
| 163 | * Callback to flush the hwaccel state. | ||
| 164 | */ | ||
| 165 | void (*flush)(AVCodecContext *avctx); | ||
| 166 | } FFHWAccel; | ||
| 167 | |||
| 168 | 435872 | static inline const FFHWAccel *ffhwaccel(const AVHWAccel *codec) | |
| 169 | { | ||
| 170 | 435872 | return (const FFHWAccel*)codec; | |
| 171 | } | ||
| 172 | |||
| 173 | #define FF_HW_CALL(avctx, function, ...) \ | ||
| 174 | (ffhwaccel((avctx)->hwaccel)->function((avctx), __VA_ARGS__)) | ||
| 175 | |||
| 176 | #define FF_HW_SIMPLE_CALL(avctx, function) \ | ||
| 177 | (ffhwaccel((avctx)->hwaccel)->function(avctx)) | ||
| 178 | |||
| 179 | #define FF_HW_HAS_CB(avctx, function) \ | ||
| 180 | ((avctx)->hwaccel && ffhwaccel((avctx)->hwaccel)->function) | ||
| 181 | |||
| 182 | #endif /* AVCODEC_HWACCEL_INTERNAL */ | ||
| 183 |