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author | Stefano Sabatini <stefasab@gmail.com> | 2012-05-18 19:41:44 +0200 |
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committer | Stefano Sabatini <stefasab@gmail.com> | 2012-05-19 13:24:57 +0200 |
commit | 0e82d317ebfc1eda840bdb714c8ecb4630dae389 (patch) | |
tree | 9a502eb194106a0032f1b37f8f981452393d9da9 /libavfilter/f_split.c | |
parent | 150227e8edfcbd5ee30d9236a4d3618937447ed3 (diff) | |
download | ffmpeg-0e82d317ebfc1eda840bdb714c8ecb4630dae389.tar.gz |
lavfi: rename vf_split.c -> f_split.c
The file now contains both an audio and a video split filter.
Diffstat (limited to 'libavfilter/f_split.c')
-rw-r--r-- | libavfilter/f_split.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/libavfilter/f_split.c b/libavfilter/f_split.c new file mode 100644 index 0000000000..2015980452 --- /dev/null +++ b/libavfilter/f_split.c @@ -0,0 +1,138 @@ +/* + * Copyright (c) 2007 Bobby Bingham + * + * 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 + * audio and video splitter + */ + +#include "avfilter.h" +#include "audio.h" + +static int split_init(AVFilterContext *ctx, const char *args, void *opaque) +{ + int i, nb_outputs = 2; + + if (args) { + nb_outputs = strtol(args, NULL, 0); + if (nb_outputs <= 0) { + av_log(ctx, AV_LOG_ERROR, "Invalid number of outputs specified: %d.\n", + nb_outputs); + return AVERROR(EINVAL); + } + } + + for (i = 0; i < nb_outputs; i++) { + char name[32]; + AVFilterPad pad = { 0 }; + + snprintf(name, sizeof(name), "output%d", i); + pad.type = !strcmp(ctx->name, "split") ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO; + pad.name = av_strdup(name); + + avfilter_insert_outpad(ctx, i, &pad); + } + + return 0; +} + +static void split_uninit(AVFilterContext *ctx) +{ + int i; + + for (i = 0; i < ctx->output_count; i++) + av_freep(&ctx->output_pads[i].name); +} + +static void start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref) +{ + AVFilterContext *ctx = inlink->dst; + int i; + + for (i = 0; i < ctx->output_count; i++) + avfilter_start_frame(ctx->outputs[i], + avfilter_ref_buffer(picref, ~AV_PERM_WRITE)); +} + +static void draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir) +{ + AVFilterContext *ctx = inlink->dst; + int i; + + for (i = 0; i < ctx->output_count; i++) + avfilter_draw_slice(ctx->outputs[i], y, h, slice_dir); +} + +static void end_frame(AVFilterLink *inlink) +{ + AVFilterContext *ctx = inlink->dst; + int i; + + for (i = 0; i < ctx->output_count; i++) + avfilter_end_frame(ctx->outputs[i]); + + avfilter_unref_buffer(inlink->cur_buf); +} + +AVFilter avfilter_vf_split = { + .name = "split", + .description = NULL_IF_CONFIG_SMALL("Pass on the input to two outputs."), + + .init = split_init, + .uninit = split_uninit, + + .inputs = (const AVFilterPad[]) {{ .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .get_video_buffer= avfilter_null_get_video_buffer, + .start_frame = start_frame, + .draw_slice = draw_slice, + .end_frame = end_frame, }, + { .name = NULL}}, + .outputs = (AVFilterPad[]) {{ .name = NULL}}, +}; + +static void filter_samples(AVFilterLink *inlink, AVFilterBufferRef *samplesref) +{ + AVFilterContext *ctx = inlink->dst; + int i; + + for (i = 0; i < ctx->output_count; i++) + ff_filter_samples(inlink->dst->outputs[i], + avfilter_ref_buffer(samplesref, ~AV_PERM_WRITE)); +} + +AVFilter avfilter_af_asplit = { + .name = "asplit", + .description = NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."), + + .init = split_init, + .uninit = split_uninit, + + .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 = NULL }}, +}; |