mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
3.0 KiB
104 lines
3.0 KiB
/* |
|
* WebP encoding support via libwebp |
|
* Copyright (c) 2013 Justin Ruggles <justin.ruggles@gmail.com> |
|
* |
|
* 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 |
|
* WebP encoder using libwebp (WebPEncode API) |
|
*/ |
|
|
|
#include "codec_internal.h" |
|
#include "encode.h" |
|
#include "libwebpenc_common.h" |
|
|
|
typedef LibWebPContextCommon LibWebPContext; |
|
|
|
static av_cold int libwebp_encode_init(AVCodecContext *avctx) |
|
{ |
|
return ff_libwebp_encode_init_common(avctx); |
|
} |
|
|
|
static int libwebp_encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
|
const AVFrame *frame, int *got_packet) |
|
{ |
|
LibWebPContext *s = avctx->priv_data; |
|
WebPPicture *pic = NULL; |
|
AVFrame *alt_frame = NULL; |
|
WebPMemoryWriter mw = { 0 }; |
|
|
|
int ret = ff_libwebp_get_frame(avctx, s, frame, &alt_frame, &pic); |
|
if (ret < 0) |
|
goto end; |
|
|
|
WebPMemoryWriterInit(&mw); |
|
pic->custom_ptr = &mw; |
|
pic->writer = WebPMemoryWrite; |
|
|
|
ret = WebPEncode(&s->config, pic); |
|
if (!ret) { |
|
av_log(avctx, AV_LOG_ERROR, "WebPEncode() failed with error: %d\n", |
|
pic->error_code); |
|
ret = ff_libwebp_error_to_averror(pic->error_code); |
|
goto end; |
|
} |
|
|
|
ret = ff_get_encode_buffer(avctx, pkt, mw.size, 0); |
|
if (ret < 0) |
|
goto end; |
|
memcpy(pkt->data, mw.mem, mw.size); |
|
|
|
*got_packet = 1; |
|
|
|
end: |
|
#if (WEBP_ENCODER_ABI_VERSION > 0x0203) |
|
WebPMemoryWriterClear(&mw); |
|
#else |
|
free(mw.mem); /* must use free() according to libwebp documentation */ |
|
#endif |
|
WebPPictureFree(pic); |
|
av_freep(&pic); |
|
av_frame_free(&alt_frame); |
|
|
|
return ret; |
|
} |
|
|
|
static int libwebp_encode_close(AVCodecContext *avctx) |
|
{ |
|
LibWebPContextCommon *s = avctx->priv_data; |
|
av_frame_free(&s->ref); |
|
|
|
return 0; |
|
} |
|
|
|
const FFCodec ff_libwebp_encoder = { |
|
.p.name = "libwebp", |
|
.p.long_name = NULL_IF_CONFIG_SMALL("libwebp WebP image"), |
|
.p.type = AVMEDIA_TYPE_VIDEO, |
|
.p.id = AV_CODEC_ID_WEBP, |
|
.p.capabilities = AV_CODEC_CAP_DR1, |
|
.p.pix_fmts = ff_libwebpenc_pix_fmts, |
|
.p.priv_class = &ff_libwebpenc_class, |
|
.p.wrapper_name = "libwebp", |
|
.priv_data_size = sizeof(LibWebPContext), |
|
.defaults = ff_libwebp_defaults, |
|
.init = libwebp_encode_init, |
|
FF_CODEC_ENCODE_CB(libwebp_encode_frame), |
|
.close = libwebp_encode_close, |
|
};
|
|
|