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2ba45a60 DM |
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 | } |