| /* |
| * 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" |
| #include "video.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 = ctx->filter->inputs[0].type; |
| 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= ff_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 }}, |
| }; |