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 #ifndef AVCODEC_VT_INTERNAL_H 20 #define AVCODEC_VT_INTERNAL_H 21 22 #include "avcodec.h" 23 #include "videotoolbox.h" 24 25 typedef struct VTContext { 26 // The current bitstream buffer. 27 uint8_t *bitstream; 28 29 // The current size of the bitstream. 30 int bitstream_size; 31 32 // The reference size used for fast reallocation. 33 int allocated_size; 34 35 // The core video buffer 36 CVImageBufferRef frame; 37 38 // Current dummy frames context (depends on exact CVImageBufferRef params). 39 struct AVBufferRef *cached_hw_frames_ctx; 40 41 // Non-NULL if the new hwaccel API is used. This is only a separate struct 42 // to ease compatibility with the old API. 43 struct AVVideotoolboxContext *vt_ctx; 44 45 // Current H264 parameters (used to trigger decoder restart on SPS changes). 46 uint8_t sps[3]; 47 bool reconfig_needed; 48 49 void *logctx; 50 } VTContext; 51 52 int ff_videotoolbox_alloc_frame(AVCodecContext *avctx, AVFrame *frame); 53 int ff_videotoolbox_common_init(AVCodecContext *avctx); 54 int ff_videotoolbox_frame_params(AVCodecContext *avctx, 55 AVBufferRef *hw_frames_ctx); 56 int ff_videotoolbox_buffer_copy(VTContext *vtctx, 57 const uint8_t *buffer, 58 uint32_t size); 59 int ff_videotoolbox_uninit(AVCodecContext *avctx); 60 int ff_videotoolbox_h264_start_frame(AVCodecContext *avctx, 61 const uint8_t *buffer, 62 uint32_t size); 63 int ff_videotoolbox_h264_decode_slice(AVCodecContext *avctx, 64 const uint8_t *buffer, 65 uint32_t size); 66 int ff_videotoolbox_common_end_frame(AVCodecContext *avctx, AVFrame *frame); 67 CFDataRef ff_videotoolbox_avcc_extradata_create(AVCodecContext *avctx); 68 CFDataRef ff_videotoolbox_hvcc_extradata_create(AVCodecContext *avctx); 69 CFDataRef ff_videotoolbox_vpcc_extradata_create(AVCodecContext *avctx); 70 71 #endif /* AVCODEC_VT_INTERNAL_H */ 72