diff options
author | Nicolas George <nicolas.george@normalesup.org> | 2012-07-08 21:45:33 +0400 |
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committer | Nicolas George <nicolas.george@normalesup.org> | 2012-07-08 21:54:08 +0400 |
commit | 299387ebf4d98d4808f065fd3797b0fa108f506f (patch) | |
tree | 1f55f1abe50974028b412a48dd5eb0d7180b0641 /libavfilter/vf_settb.c | |
parent | 65e65e3ce28e4311b5d8ed28ecfe1edd11581a4a (diff) |
vf_settb: rename the file as f_settb.
Diffstat (limited to 'libavfilter/vf_settb.c')
-rw-r--r-- | libavfilter/vf_settb.c | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/libavfilter/vf_settb.c b/libavfilter/vf_settb.c deleted file mode 100644 index 6549a5c26c..0000000000 --- a/libavfilter/vf_settb.c +++ /dev/null @@ -1,185 +0,0 @@ -/* - * Copyright (c) 2010 Stefano Sabatini - * - * 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. - * - * 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 FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * Set timebase for the output link. - */ - -#include "libavutil/avstring.h" -#include "libavutil/eval.h" -#include "libavutil/mathematics.h" -#include "libavutil/rational.h" -#include "avfilter.h" -#include "internal.h" -#include "audio.h" -#include "video.h" - -static const char *const var_names[] = { - "AVTB", /* default timebase 1/AV_TIME_BASE */ - "intb", /* input timebase */ - "sr", /* sample rate */ - NULL -}; - -enum var_name { - VAR_AVTB, - VAR_INTB, - VAR_SR, - VAR_VARS_NB -}; - -typedef struct { - char tb_expr[256]; - double var_values[VAR_VARS_NB]; -} SetTBContext; - -static av_cold int init(AVFilterContext *ctx, const char *args) -{ - SetTBContext *settb = ctx->priv; - av_strlcpy(settb->tb_expr, "intb", sizeof(settb->tb_expr)); - - if (args) - sscanf(args, "%255[^:]", settb->tb_expr); - - return 0; -} - -static int config_output_props(AVFilterLink *outlink) -{ - AVFilterContext *ctx = outlink->src; - SetTBContext *settb = ctx->priv; - AVFilterLink *inlink = ctx->inputs[0]; - AVRational time_base; - int ret; - double res; - - settb->var_values[VAR_AVTB] = av_q2d(AV_TIME_BASE_Q); - settb->var_values[VAR_INTB] = av_q2d(inlink->time_base); - settb->var_values[VAR_SR] = inlink->sample_rate; - - outlink->w = inlink->w; - outlink->h = inlink->h; - - if ((ret = av_expr_parse_and_eval(&res, settb->tb_expr, var_names, settb->var_values, - NULL, NULL, NULL, NULL, NULL, 0, NULL)) < 0) { - av_log(ctx, AV_LOG_ERROR, "Invalid expression '%s' for timebase.\n", settb->tb_expr); - return ret; - } - time_base = av_d2q(res, INT_MAX); - if (time_base.num <= 0 || time_base.den <= 0) { - av_log(ctx, AV_LOG_ERROR, - "Invalid non-positive values for the timebase num:%d or den:%d.\n", - time_base.num, time_base.den); - return AVERROR(EINVAL); - } - - outlink->time_base = time_base; - av_log(outlink->src, AV_LOG_VERBOSE, "tb:%d/%d -> tb:%d/%d\n", - inlink ->time_base.num, inlink ->time_base.den, - outlink->time_base.num, outlink->time_base.den); - - return 0; -} - -static void start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref) -{ - AVFilterContext *ctx = inlink->dst; - AVFilterLink *outlink = ctx->outputs[0]; - AVFilterBufferRef *picref2 = picref; - - if (av_cmp_q(inlink->time_base, outlink->time_base)) { - picref2 = avfilter_ref_buffer(picref, ~0); - picref2->pts = av_rescale_q(picref->pts, inlink->time_base, outlink->time_base); - av_log(ctx, AV_LOG_DEBUG, "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n", - inlink ->time_base.num, inlink ->time_base.den, picref ->pts, - outlink->time_base.num, outlink->time_base.den, picref2->pts); - avfilter_unref_buffer(picref); - } - - ff_start_frame(outlink, picref2); -} - -static void filter_samples(AVFilterLink *inlink, AVFilterBufferRef *insamples) -{ - AVFilterContext *ctx = inlink->dst; - AVFilterLink *outlink = ctx->outputs[0]; - AVFilterBufferRef *outsamples = insamples; - - if (av_cmp_q(inlink->time_base, outlink->time_base)) { - outsamples = avfilter_ref_buffer(insamples, ~0); - outsamples->pts = av_rescale_q(insamples->pts, inlink->time_base, outlink->time_base); - av_log(ctx, AV_LOG_DEBUG, "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n", - inlink ->time_base.num, inlink ->time_base.den, insamples ->pts, - outlink->time_base.num, outlink->time_base.den, outsamples->pts); - avfilter_unref_buffer(insamples); - } - - ff_filter_samples(outlink, outsamples); -} - -#if CONFIG_SETTB_FILTER -AVFilter avfilter_vf_settb = { - .name = "settb", - .description = NULL_IF_CONFIG_SMALL("Set timebase for the video output link."), - .init = init, - - .priv_size = sizeof(SetTBContext), - - .inputs = (const AVFilterPad[]) { - { .name = "default", - .type = AVMEDIA_TYPE_VIDEO, - .get_video_buffer = ff_null_get_video_buffer, - .start_frame = start_frame, - .end_frame = ff_null_end_frame }, - { .name = NULL } - }, - .outputs = (const AVFilterPad[]) { - { .name = "default", - .type = AVMEDIA_TYPE_VIDEO, - .config_props = config_output_props, }, - { .name = NULL} - }, -}; -#endif - -#if CONFIG_ASETTB_FILTER -AVFilter avfilter_af_asettb = { - .name = "asettb", - .description = NULL_IF_CONFIG_SMALL("Set timebase for the audio output link."), - .init = init, - - .priv_size = sizeof(SetTBContext), - - .inputs = (const AVFilterPad[]) { - { .name = "default", - .type = AVMEDIA_TYPE_AUDIO, - .get_audio_buffer = ff_null_get_audio_buffer, - .filter_samples = filter_samples, }, - { .name = NULL } - }, - .outputs = (const AVFilterPad[]) { - { .name = "default", - .type = AVMEDIA_TYPE_AUDIO, - .config_props = config_output_props, }, - { .name = NULL} - }, -}; -#endif |