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 "config.h"
20
21 #if HAVE_UTGETOSTYPEFROMSTRING
22 #include <CoreServices/CoreServices.h>
23 #endif
24
25 #include "libavcodec/avcodec.h"
26 #include "libavcodec/videotoolbox.h"
27 #include "libavutil/imgutils.h"
28 #include "ffmpeg.h"
29
30 typedef struct VTContext {
31 AVFrame *tmp_frame;
32 } VTContext;
33
34 char *videotoolbox_pixfmt;
35
videotoolbox_retrieve_data(AVCodecContext * s,AVFrame * frame)36 static int videotoolbox_retrieve_data(AVCodecContext *s, AVFrame *frame)
37 {
38 InputStream *ist = s->opaque;
39 VTContext *vt = ist->hwaccel_ctx;
40 CVPixelBufferRef pixbuf = (CVPixelBufferRef)frame->data[3];
41 OSType pixel_format = CVPixelBufferGetPixelFormatType(pixbuf);
42 CVReturn err;
43 uint8_t *data[4] = { 0 };
44 int linesize[4] = { 0 };
45 int planes, ret, i;
46
47 av_frame_unref(vt->tmp_frame);
48
49 switch (pixel_format) {
50 case kCVPixelFormatType_420YpCbCr8Planar: vt->tmp_frame->format = AV_PIX_FMT_YUV420P; break;
51 case kCVPixelFormatType_422YpCbCr8: vt->tmp_frame->format = AV_PIX_FMT_UYVY422; break;
52 case kCVPixelFormatType_32BGRA: vt->tmp_frame->format = AV_PIX_FMT_BGRA; break;
53 #ifdef kCFCoreFoundationVersionNumber10_7
54 case kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange:
55 case kCVPixelFormatType_420YpCbCr8BiPlanarFullRange: vt->tmp_frame->format = AV_PIX_FMT_NV12; break;
56 #endif
57 #if HAVE_KCVPIXELFORMATTYPE_420YPCBCR10BIPLANARVIDEORANGE
58 case kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange:
59 case kCVPixelFormatType_420YpCbCr10BiPlanarFullRange: vt->tmp_frame->format = AV_PIX_FMT_P010; break;
60 #endif
61 default:
62 av_log(NULL, AV_LOG_ERROR,
63 "%s: Unsupported pixel format: %s\n",
64 av_fourcc2str(s->codec_tag), videotoolbox_pixfmt);
65 return AVERROR(ENOSYS);
66 }
67
68 vt->tmp_frame->width = frame->width;
69 vt->tmp_frame->height = frame->height;
70 ret = av_frame_get_buffer(vt->tmp_frame, 0);
71 if (ret < 0)
72 return ret;
73
74 err = CVPixelBufferLockBaseAddress(pixbuf, kCVPixelBufferLock_ReadOnly);
75 if (err != kCVReturnSuccess) {
76 av_log(NULL, AV_LOG_ERROR, "Error locking the pixel buffer.\n");
77 return AVERROR_UNKNOWN;
78 }
79
80 if (CVPixelBufferIsPlanar(pixbuf)) {
81
82 planes = CVPixelBufferGetPlaneCount(pixbuf);
83 for (i = 0; i < planes; i++) {
84 data[i] = CVPixelBufferGetBaseAddressOfPlane(pixbuf, i);
85 linesize[i] = CVPixelBufferGetBytesPerRowOfPlane(pixbuf, i);
86 }
87 } else {
88 data[0] = CVPixelBufferGetBaseAddress(pixbuf);
89 linesize[0] = CVPixelBufferGetBytesPerRow(pixbuf);
90 }
91
92 av_image_copy(vt->tmp_frame->data, vt->tmp_frame->linesize,
93 (const uint8_t **)data, linesize, vt->tmp_frame->format,
94 frame->width, frame->height);
95
96 ret = av_frame_copy_props(vt->tmp_frame, frame);
97 CVPixelBufferUnlockBaseAddress(pixbuf, kCVPixelBufferLock_ReadOnly);
98 if (ret < 0)
99 return ret;
100
101 av_frame_unref(frame);
102 av_frame_move_ref(frame, vt->tmp_frame);
103
104 return 0;
105 }
106
videotoolbox_uninit(AVCodecContext * s)107 static void videotoolbox_uninit(AVCodecContext *s)
108 {
109 InputStream *ist = s->opaque;
110 VTContext *vt = ist->hwaccel_ctx;
111
112 ist->hwaccel_uninit = NULL;
113 ist->hwaccel_retrieve_data = NULL;
114
115 av_frame_free(&vt->tmp_frame);
116
117 av_videotoolbox_default_free(s);
118 av_freep(&ist->hwaccel_ctx);
119 }
120
videotoolbox_init(AVCodecContext * s)121 int videotoolbox_init(AVCodecContext *s)
122 {
123 InputStream *ist = s->opaque;
124 int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
125 int ret = 0;
126 VTContext *vt;
127
128 vt = av_mallocz(sizeof(*vt));
129 if (!vt)
130 return AVERROR(ENOMEM);
131
132 ist->hwaccel_ctx = vt;
133 ist->hwaccel_uninit = videotoolbox_uninit;
134 ist->hwaccel_retrieve_data = videotoolbox_retrieve_data;
135
136 vt->tmp_frame = av_frame_alloc();
137 if (!vt->tmp_frame) {
138 ret = AVERROR(ENOMEM);
139 goto fail;
140 }
141
142 // TODO: reindent
143 if (!videotoolbox_pixfmt) {
144 ret = av_videotoolbox_default_init(s);
145 } else {
146 AVVideotoolboxContext *vtctx = av_videotoolbox_alloc_context();
147 CFStringRef pixfmt_str = CFStringCreateWithCString(kCFAllocatorDefault,
148 videotoolbox_pixfmt,
149 kCFStringEncodingUTF8);
150 #if HAVE_UTGETOSTYPEFROMSTRING
151 vtctx->cv_pix_fmt_type = UTGetOSTypeFromString(pixfmt_str);
152 #else
153 av_log(s, loglevel, "UTGetOSTypeFromString() is not available "
154 "on this platform, %s pixel format can not be honored from "
155 "the command line\n", videotoolbox_pixfmt);
156 #endif
157 ret = av_videotoolbox_default_init2(s, vtctx);
158 CFRelease(pixfmt_str);
159 }
160 if (ret < 0) {
161 av_log(NULL, loglevel, "Error creating Videotoolbox decoder.\n");
162 goto fail;
163 }
164
165 return 0;
166 fail:
167 videotoolbox_uninit(s);
168 return ret;
169 }
170