From 88e0e2054d911b38662f681bdc267e08312d313a Mon Sep 17 00:00:00 2001 From: Paul B Mahol Date: Wed, 8 May 2013 19:48:09 +0000 Subject: lavfi: remove alphaextract special code Signed-off-by: Paul B Mahol --- libavfilter/vf_alphaextract.c | 130 ------------------------------------------ 1 file changed, 130 deletions(-) delete mode 100644 libavfilter/vf_alphaextract.c (limited to 'libavfilter/vf_alphaextract.c') diff --git a/libavfilter/vf_alphaextract.c b/libavfilter/vf_alphaextract.c deleted file mode 100644 index d19a0f7bda..0000000000 --- a/libavfilter/vf_alphaextract.c +++ /dev/null @@ -1,130 +0,0 @@ -/* - * Copyright (c) 2012 Steven Robertson - * - * 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 - * simple channel-swapping filter to get at the alpha component - */ - -#include - -#include "libavutil/pixfmt.h" -#include "avfilter.h" -#include "drawutils.h" -#include "internal.h" -#include "formats.h" -#include "video.h" - -enum { Y, U, V, A }; - -typedef struct { - int is_packed_rgb; - uint8_t rgba_map[4]; -} AlphaExtractContext; - -static int query_formats(AVFilterContext *ctx) -{ - static const enum AVPixelFormat in_fmts[] = { - AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P, - AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA, AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, - AV_PIX_FMT_NONE - }; - static const enum AVPixelFormat out_fmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE }; - ff_formats_ref(ff_make_format_list(in_fmts), &ctx->inputs[0]->out_formats); - ff_formats_ref(ff_make_format_list(out_fmts), &ctx->outputs[0]->in_formats); - return 0; -} - -static int config_input(AVFilterLink *inlink) -{ - AlphaExtractContext *extract = inlink->dst->priv; - extract->is_packed_rgb = - ff_fill_rgba_map(extract->rgba_map, inlink->format) >= 0; - return 0; -} - -static int filter_frame(AVFilterLink *inlink, AVFrame *cur_buf) -{ - AlphaExtractContext *extract = inlink->dst->priv; - AVFilterLink *outlink = inlink->dst->outputs[0]; - AVFrame *out_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h); - int ret; - - if (!out_buf) { - ret = AVERROR(ENOMEM); - goto end; - } - av_frame_copy_props(out_buf, cur_buf); - - if (extract->is_packed_rgb) { - int x, y; - uint8_t *pcur, *pout; - for (y = 0; y < outlink->h; y++) { - pcur = cur_buf->data[0] + y * cur_buf->linesize[0] + extract->rgba_map[A]; - pout = out_buf->data[0] + y * out_buf->linesize[0]; - for (x = 0; x < outlink->w; x++) { - *pout = *pcur; - pout += 1; - pcur += 4; - } - } - } else { - int y; - for (y = 0; y < outlink->h; y++) { - memcpy(out_buf->data[Y] + y * out_buf->linesize[Y], - cur_buf->data[A] + y * cur_buf->linesize[A], - outlink->w); - } - } - - ret = ff_filter_frame(outlink, out_buf); - -end: - av_frame_free(&cur_buf); - return ret; -} - -static const AVFilterPad alphaextract_inputs[] = { - { - .name = "default", - .type = AVMEDIA_TYPE_VIDEO, - .config_props = config_input, - .filter_frame = filter_frame, - }, - { NULL } -}; - -static const AVFilterPad alphaextract_outputs[] = { - { - .name = "default", - .type = AVMEDIA_TYPE_VIDEO, - }, - { NULL } -}; - -AVFilter avfilter_vf_alphaextract = { - .name = "alphaextract", - .description = NULL_IF_CONFIG_SMALL("Extract an alpha channel as a " - "grayscale image component."), - .priv_size = sizeof(AlphaExtractContext), - .query_formats = query_formats, - .inputs = alphaextract_inputs, - .outputs = alphaextract_outputs, -}; -- cgit v1.2.3