diff options
Diffstat (limited to 'libavfilter/vf_fps.c')
| -rw-r--r-- | libavfilter/vf_fps.c | 51 |
1 files changed, 26 insertions, 25 deletions
diff --git a/libavfilter/vf_fps.c b/libavfilter/vf_fps.c index 7f5175248c..006c24577f 100644 --- a/libavfilter/vf_fps.c +++ b/libavfilter/vf_fps.c @@ -1,18 +1,22 @@ /* - * This file is part of Libav. + * Copyright 2007 Bobby Bingham + * Copyright 2012 Robert Nagy <ronag89 gmail com> + * Copyright 2012 Anton Khirnov <anton khirnov net> * - * Libav is free software; you can redistribute it and/or + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -41,7 +45,7 @@ typedef struct FPSContext { int64_t pts; ///< pts of the first frame currently in the fifo AVRational framerate; ///< target framerate - char *fps; ///< a string describing target framerate + int rounding; ///< AVRounding method for timestamps /* statistics */ int frames_in; ///< number of frames on input @@ -52,27 +56,23 @@ typedef struct FPSContext { #define OFFSET(x) offsetof(FPSContext, x) #define V AV_OPT_FLAG_VIDEO_PARAM -static const AVOption options[] = { - { "fps", "A string describing desired output framerate", OFFSET(fps), AV_OPT_TYPE_STRING, { .str = "25" }, .flags = V }, +#define F AV_OPT_FLAG_FILTERING_PARAM +static const AVOption fps_options[] = { + { "fps", "A string describing desired output framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, { .str = "25" }, .flags = V|F }, + { "round", "set rounding method for timestamps", OFFSET(rounding), AV_OPT_TYPE_INT, { .i64 = AV_ROUND_NEAR_INF }, 0, 5, V|F, "round" }, + { "zero", "round towards 0", OFFSET(rounding), AV_OPT_TYPE_CONST, { .i64 = AV_ROUND_ZERO }, 0, 5, V|F, "round" }, + { "inf", "round away from 0", OFFSET(rounding), AV_OPT_TYPE_CONST, { .i64 = AV_ROUND_INF }, 0, 5, V|F, "round" }, + { "down", "round towards -infty", OFFSET(rounding), AV_OPT_TYPE_CONST, { .i64 = AV_ROUND_DOWN }, 0, 5, V|F, "round" }, + { "up", "round towards +infty", OFFSET(rounding), AV_OPT_TYPE_CONST, { .i64 = AV_ROUND_UP }, 0, 5, V|F, "round" }, + { "near", "round to nearest", OFFSET(rounding), AV_OPT_TYPE_CONST, { .i64 = AV_ROUND_NEAR_INF }, 0, 5, V|F, "round" }, { NULL }, }; -static const AVClass class = { - .class_name = "FPS filter", - .item_name = av_default_item_name, - .option = options, - .version = LIBAVUTIL_VERSION_INT, -}; +AVFILTER_DEFINE_CLASS(fps); static av_cold int init(AVFilterContext *ctx) { FPSContext *s = ctx->priv; - int ret; - - if ((ret = av_parse_video_rate(&s->framerate, s->fps)) < 0) { - av_log(ctx, AV_LOG_ERROR, "Error parsing framerate %s.\n", s->fps); - return ret; - } if (!(s->fifo = av_fifo_alloc(2*sizeof(AVFrame*)))) return AVERROR(ENOMEM); @@ -96,7 +96,7 @@ static av_cold void uninit(AVFilterContext *ctx) { FPSContext *s = ctx->priv; if (s->fifo) { - s->drop += av_fifo_size(s->fifo) / sizeof(AVFilterBufferRef*); + s->drop += av_fifo_size(s->fifo) / sizeof(AVFrame*); flush_fifo(s->fifo); av_fifo_free(s->fifo); } @@ -109,7 +109,8 @@ static int config_props(AVFilterLink* link) { FPSContext *s = link->src->priv; - link->time_base = (AVRational){ s->framerate.den, s->framerate.num }; + link->time_base = av_inv_q(s->framerate); + link->frame_rate= s->framerate; link->w = link->src->inputs[0]->w; link->h = link->src->inputs[0]->h; @@ -193,8 +194,8 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *buf) } /* number of output frames */ - delta = av_rescale_q(buf->pts - s->pts, inlink->time_base, - outlink->time_base); + delta = av_rescale_q_rnd(buf->pts - s->pts, inlink->time_base, + outlink->time_base, s->rounding); if (delta < 1) { /* drop the frame and everything buffered except the first */ @@ -275,13 +276,13 @@ static const AVFilterPad avfilter_vf_fps_outputs[] = { AVFilter avfilter_vf_fps = { .name = "fps", - .description = NULL_IF_CONFIG_SMALL("Force constant framerate"), + .description = NULL_IF_CONFIG_SMALL("Force constant framerate."), .init = init, .uninit = uninit, .priv_size = sizeof(FPSContext), - .priv_class = &class, + .priv_class = &fps_class, .inputs = avfilter_vf_fps_inputs, .outputs = avfilter_vf_fps_outputs, |