Commit | Line | Data |
---|---|---|
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 "dualinput.h" | |
20 | #include "libavutil/timestamp.h" | |
21 | ||
22 | static int process_frame(FFFrameSync *fs) | |
23 | { | |
24 | AVFilterContext *ctx = fs->parent; | |
25 | FFDualInputContext *s = fs->opaque; | |
26 | AVFrame *mainpic = NULL, *secondpic = NULL; | |
27 | int ret = 0; | |
28 | ||
29 | if ((ret = ff_framesync_get_frame(&s->fs, 0, &mainpic, 1)) < 0 || | |
30 | (ret = ff_framesync_get_frame(&s->fs, 1, &secondpic, 0)) < 0) { | |
31 | av_frame_free(&mainpic); | |
32 | return ret; | |
33 | } | |
34 | av_assert0(mainpic); | |
35 | mainpic->pts = av_rescale_q(mainpic->pts, s->fs.time_base, ctx->outputs[0]->time_base); | |
36 | if (secondpic && !ctx->is_disabled) | |
37 | mainpic = s->process(ctx, mainpic, secondpic); | |
38 | ret = ff_filter_frame(ctx->outputs[0], mainpic); | |
39 | av_assert1(ret != AVERROR(EAGAIN)); | |
40 | return ret; | |
41 | } | |
42 | ||
43 | int ff_dualinput_init(AVFilterContext *ctx, FFDualInputContext *s) | |
44 | { | |
45 | FFFrameSyncIn *in = s->fs.in; | |
46 | ||
47 | ff_framesync_init(&s->fs, ctx, 2); | |
48 | s->fs.opaque = s; | |
49 | s->fs.on_event = process_frame; | |
50 | in[0].time_base = ctx->inputs[0]->time_base; | |
51 | in[1].time_base = ctx->inputs[1]->time_base; | |
52 | in[0].sync = 2; | |
53 | in[0].before = EXT_STOP; | |
54 | in[0].after = EXT_INFINITY; | |
55 | in[1].sync = 1; | |
56 | in[1].before = EXT_NULL; | |
57 | in[1].after = EXT_INFINITY; | |
58 | ||
59 | if (s->shortest) | |
60 | in[0].after = in[1].after = EXT_STOP; | |
61 | if (!s->repeatlast) { | |
62 | in[1].after = EXT_NULL; | |
63 | in[1].sync = 0; | |
64 | } | |
65 | ||
66 | return ff_framesync_configure(&s->fs); | |
67 | } | |
68 | ||
69 | int ff_dualinput_filter_frame(FFDualInputContext *s, | |
70 | AVFilterLink *inlink, AVFrame *in) | |
71 | { | |
72 | return ff_framesync_filter_frame(&s->fs, inlink, in); | |
73 | } | |
74 | ||
75 | int ff_dualinput_request_frame(FFDualInputContext *s, AVFilterLink *outlink) | |
76 | { | |
77 | return ff_framesync_request_frame(&s->fs, outlink); | |
78 | } | |
79 | ||
80 | void ff_dualinput_uninit(FFDualInputContext *s) | |
81 | { | |
82 | ff_framesync_uninit(&s->fs); | |
83 | } |