| 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 | #include "libavcodec/avcodec.h" |
| 20 | #include "libavcodec/vda.h" |
| 21 | #include "libavutil/imgutils.h" |
| 22 | |
| 23 | #include "ffmpeg.h" |
| 24 | |
| 25 | typedef struct VDAContext { |
| 26 | AVFrame *tmp_frame; |
| 27 | } VDAContext; |
| 28 | |
| 29 | static int vda_retrieve_data(AVCodecContext *s, AVFrame *frame) |
| 30 | { |
| 31 | InputStream *ist = s->opaque; |
| 32 | VDAContext *vda = ist->hwaccel_ctx; |
| 33 | CVPixelBufferRef pixbuf = (CVPixelBufferRef)frame->data[3]; |
| 34 | OSType pixel_format = CVPixelBufferGetPixelFormatType(pixbuf); |
| 35 | CVReturn err; |
| 36 | uint8_t *data[4] = { 0 }; |
| 37 | int linesize[4] = { 0 }; |
| 38 | int planes, ret, i; |
| 39 | |
| 40 | av_frame_unref(vda->tmp_frame); |
| 41 | |
| 42 | switch (pixel_format) { |
| 43 | case kCVPixelFormatType_420YpCbCr8Planar: vda->tmp_frame->format = AV_PIX_FMT_YUV420P; break; |
| 44 | case kCVPixelFormatType_422YpCbCr8: vda->tmp_frame->format = AV_PIX_FMT_UYVY422; break; |
| 45 | default: |
| 46 | av_log(NULL, AV_LOG_ERROR, |
| 47 | "Unsupported pixel format: %u\n", pixel_format); |
| 48 | return AVERROR(ENOSYS); |
| 49 | } |
| 50 | |
| 51 | vda->tmp_frame->width = frame->width; |
| 52 | vda->tmp_frame->height = frame->height; |
| 53 | ret = av_frame_get_buffer(vda->tmp_frame, 32); |
| 54 | if (ret < 0) |
| 55 | return ret; |
| 56 | |
| 57 | err = CVPixelBufferLockBaseAddress(pixbuf, kCVPixelBufferLock_ReadOnly); |
| 58 | if (err != kCVReturnSuccess) { |
| 59 | av_log(NULL, AV_LOG_ERROR, "Error locking the pixel buffer.\n"); |
| 60 | return AVERROR_UNKNOWN; |
| 61 | } |
| 62 | |
| 63 | if (CVPixelBufferIsPlanar(pixbuf)) { |
| 64 | |
| 65 | planes = CVPixelBufferGetPlaneCount(pixbuf); |
| 66 | for (i = 0; i < planes; i++) { |
| 67 | data[i] = CVPixelBufferGetBaseAddressOfPlane(pixbuf, i); |
| 68 | linesize[i] = CVPixelBufferGetBytesPerRowOfPlane(pixbuf, i); |
| 69 | } |
| 70 | } else { |
| 71 | data[0] = CVPixelBufferGetBaseAddress(pixbuf); |
| 72 | linesize[0] = CVPixelBufferGetBytesPerRow(pixbuf); |
| 73 | } |
| 74 | |
| 75 | av_image_copy(vda->tmp_frame->data, vda->tmp_frame->linesize, |
| 76 | data, linesize, vda->tmp_frame->format, |
| 77 | frame->width, frame->height); |
| 78 | |
| 79 | ret = av_frame_copy_props(vda->tmp_frame, frame); |
| 80 | if (ret < 0) |
| 81 | return ret; |
| 82 | |
| 83 | av_frame_unref(frame); |
| 84 | av_frame_move_ref(frame, vda->tmp_frame); |
| 85 | |
| 86 | return 0; |
| 87 | } |
| 88 | |
| 89 | static void vda_uninit(AVCodecContext *s) |
| 90 | { |
| 91 | InputStream *ist = s->opaque; |
| 92 | VDAContext *vda = ist->hwaccel_ctx; |
| 93 | |
| 94 | ist->hwaccel_uninit = NULL; |
| 95 | ist->hwaccel_retrieve_data = NULL; |
| 96 | |
| 97 | av_frame_free(&vda->tmp_frame); |
| 98 | |
| 99 | av_vda_default_free(s); |
| 100 | av_freep(&ist->hwaccel_ctx); |
| 101 | } |
| 102 | |
| 103 | int vda_init(AVCodecContext *s) |
| 104 | { |
| 105 | InputStream *ist = s->opaque; |
| 106 | int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR; |
| 107 | VDAContext *vda; |
| 108 | int ret; |
| 109 | |
| 110 | vda = av_mallocz(sizeof(*vda)); |
| 111 | if (!vda) |
| 112 | return AVERROR(ENOMEM); |
| 113 | |
| 114 | ist->hwaccel_ctx = vda; |
| 115 | ist->hwaccel_uninit = vda_uninit; |
| 116 | ist->hwaccel_retrieve_data = vda_retrieve_data; |
| 117 | |
| 118 | vda->tmp_frame = av_frame_alloc(); |
| 119 | if (!vda->tmp_frame) { |
| 120 | ret = AVERROR(ENOMEM); |
| 121 | goto fail; |
| 122 | } |
| 123 | |
| 124 | ret = av_vda_default_init(s); |
| 125 | if (ret < 0) { |
| 126 | av_log(NULL, loglevel, "Error creating VDA decoder.\n"); |
| 127 | goto fail; |
| 128 | } |
| 129 | |
| 130 | return 0; |
| 131 | fail: |
| 132 | vda_uninit(s); |
| 133 | return ret; |
| 134 | } |