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0971fcf0a0
The aim of this is twofold: a) Clang warns when setting a deprecated
field in a definition and because several of the widely set
AVCodec fields are deprecated, one gets several hundred warnings
from Clang for an ordinary build. Yet fortunately Clang (unlike GCC)
allows to disable deprecation warnings inside a definition, so
that one can create simple macros to set these fields that also suppress
deprecation warnings for Clang. This has already been done in
fdff1b9cbf for AVCodec.channel_layouts.
b) Using macros will allow to easily migrate these fields to internal ones.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
/*
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* WebP encoding support via libwebp
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* Copyright (c) 2013 Justin Ruggles <justin.ruggles@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* WebP encoder using libwebp (WebPEncode API)
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*/
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#include "libavutil/mem.h"
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#include "codec_internal.h"
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#include "encode.h"
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#include "libwebpenc_common.h"
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typedef LibWebPContextCommon LibWebPContext;
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static av_cold int libwebp_encode_init(AVCodecContext *avctx)
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{
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return ff_libwebp_encode_init_common(avctx);
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}
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static int libwebp_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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const AVFrame *frame, int *got_packet)
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{
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LibWebPContext *s = avctx->priv_data;
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WebPPicture *pic = NULL;
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AVFrame *alt_frame = NULL;
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WebPMemoryWriter mw = { 0 };
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int ret = ff_libwebp_get_frame(avctx, s, frame, &alt_frame, &pic);
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if (ret < 0)
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goto end;
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WebPMemoryWriterInit(&mw);
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pic->custom_ptr = &mw;
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pic->writer = WebPMemoryWrite;
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ret = WebPEncode(&s->config, pic);
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if (!ret) {
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av_log(avctx, AV_LOG_ERROR, "WebPEncode() failed with error: %d\n",
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pic->error_code);
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ret = ff_libwebp_error_to_averror(pic->error_code);
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goto end;
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}
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ret = ff_get_encode_buffer(avctx, pkt, mw.size, 0);
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if (ret < 0)
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goto end;
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memcpy(pkt->data, mw.mem, mw.size);
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*got_packet = 1;
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end:
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#if (WEBP_ENCODER_ABI_VERSION > 0x0203)
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WebPMemoryWriterClear(&mw);
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#else
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free(mw.mem); /* must use free() according to libwebp documentation */
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#endif
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WebPPictureFree(pic);
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av_freep(&pic);
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av_frame_free(&alt_frame);
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return ret;
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}
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static int libwebp_encode_close(AVCodecContext *avctx)
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{
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LibWebPContextCommon *s = avctx->priv_data;
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av_frame_free(&s->ref);
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return 0;
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}
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const FFCodec ff_libwebp_encoder = {
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.p.name = "libwebp",
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CODEC_LONG_NAME("libwebp WebP image"),
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.p.type = AVMEDIA_TYPE_VIDEO,
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.p.id = AV_CODEC_ID_WEBP,
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.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
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CODEC_PIXFMTS_ARRAY(ff_libwebpenc_pix_fmts),
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.color_ranges = AVCOL_RANGE_MPEG,
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.p.priv_class = &ff_libwebpenc_class,
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.p.wrapper_name = "libwebp",
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.caps_internal = FF_CODEC_CAP_NOT_INIT_THREADSAFE,
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.priv_data_size = sizeof(LibWebPContext),
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.defaults = ff_libwebp_defaults,
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.init = libwebp_encode_init,
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FF_CODEC_ENCODE_CB(libwebp_encode_frame),
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.close = libwebp_encode_close,
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};
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