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/* |
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* AVFrame wrapper |
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* Copyright (c) 2015 Luca Barbato |
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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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* Simple wrapper to store an AVFrame and forward it as AVPacket. |
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*/ |
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#include "avcodec.h" |
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#include "decode.h" |
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#include "internal.h" |
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#include "libavutil/internal.h" |
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#include "libavutil/frame.h" |
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#include "libavutil/buffer.h" |
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#include "libavutil/pixdesc.h" |
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static void wrapped_avframe_release_buffer(void *unused, uint8_t *data) |
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{ |
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AVFrame *frame = (AVFrame *)data; |
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av_frame_free(&frame); |
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} |
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static int wrapped_avframe_encode(AVCodecContext *avctx, AVPacket *pkt, |
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const AVFrame *frame, int *got_packet) |
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{ |
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AVFrame *wrapped = av_frame_clone(frame); |
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uint8_t *data; |
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int size = sizeof(*wrapped) + AV_INPUT_BUFFER_PADDING_SIZE; |
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✗✓ |
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if (!wrapped) |
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return AVERROR(ENOMEM); |
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data = av_mallocz(size); |
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✗✓ |
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if (!data) { |
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av_frame_free(&wrapped); |
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return AVERROR(ENOMEM); |
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} |
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pkt->buf = av_buffer_create(data, size, |
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wrapped_avframe_release_buffer, NULL, |
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AV_BUFFER_FLAG_READONLY); |
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✗✓ |
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if (!pkt->buf) { |
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av_frame_free(&wrapped); |
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av_freep(&data); |
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return AVERROR(ENOMEM); |
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} |
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av_frame_move_ref((AVFrame*)data, wrapped); |
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av_frame_free(&wrapped); |
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pkt->data = data; |
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pkt->size = sizeof(*wrapped); |
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pkt->flags |= AV_PKT_FLAG_KEY; |
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*got_packet = 1; |
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return 0; |
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} |
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static int wrapped_avframe_decode(AVCodecContext *avctx, void *data, |
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int *got_frame, AVPacket *pkt) |
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{ |
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AVFrame *in, *out; |
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int err; |
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if (!(pkt->flags & AV_PKT_FLAG_TRUSTED)) { |
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// This decoder is not usable with untrusted input. |
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return AVERROR(EPERM); |
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} |
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if (pkt->size < sizeof(AVFrame)) |
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return AVERROR(EINVAL); |
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in = (AVFrame*)pkt->data; |
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out = data; |
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err = ff_decode_frame_props(avctx, out); |
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if (err < 0) |
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return err; |
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av_frame_move_ref(out, in); |
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err = ff_attach_decode_data(out); |
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if (err < 0) { |
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av_frame_unref(out); |
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return err; |
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} |
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*got_frame = 1; |
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return 0; |
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} |
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AVCodec ff_wrapped_avframe_encoder = { |
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.name = "wrapped_avframe", |
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.long_name = NULL_IF_CONFIG_SMALL("AVFrame to AVPacket passthrough"), |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = AV_CODEC_ID_WRAPPED_AVFRAME, |
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.encode2 = wrapped_avframe_encode, |
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.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, |
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}; |
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AVCodec ff_wrapped_avframe_decoder = { |
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.name = "wrapped_avframe", |
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.long_name = NULL_IF_CONFIG_SMALL("AVPacket to AVFrame passthrough"), |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = AV_CODEC_ID_WRAPPED_AVFRAME, |
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.decode = wrapped_avframe_decode, |
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.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, |
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}; |