blob: 14360320ffa42f07b600c038a6a449436ee4635b
| 1 | /* |
| 2 | * AVFrame wrapper |
| 3 | * Copyright (c) 2015 Luca Barbato |
| 4 | * |
| 5 | * This file is part of FFmpeg. |
| 6 | * |
| 7 | * FFmpeg is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FFmpeg is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with FFmpeg; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | /** |
| 23 | * @file |
| 24 | * Simple wrapper to store an AVFrame and forward it as AVPacket. |
| 25 | */ |
| 26 | |
| 27 | #include "avcodec.h" |
| 28 | #include "internal.h" |
| 29 | |
| 30 | #include "libavutil/internal.h" |
| 31 | #include "libavutil/frame.h" |
| 32 | #include "libavutil/buffer.h" |
| 33 | #include "libavutil/pixdesc.h" |
| 34 | |
| 35 | static void wrapped_avframe_release_buffer(void *unused, uint8_t *data) |
| 36 | { |
| 37 | AVFrame *frame = (AVFrame *)data; |
| 38 | |
| 39 | av_frame_free(&frame); |
| 40 | } |
| 41 | |
| 42 | static int wrapped_avframe_encode(AVCodecContext *avctx, AVPacket *pkt, |
| 43 | const AVFrame *frame, int *got_packet) |
| 44 | { |
| 45 | AVFrame *wrapped = av_frame_clone(frame); |
| 46 | uint8_t *data; |
| 47 | int size = sizeof(*wrapped) + AV_INPUT_BUFFER_PADDING_SIZE; |
| 48 | |
| 49 | if (!wrapped) |
| 50 | return AVERROR(ENOMEM); |
| 51 | |
| 52 | data = av_mallocz(size); |
| 53 | if (!data) { |
| 54 | av_frame_free(&wrapped); |
| 55 | return AVERROR(ENOMEM); |
| 56 | } |
| 57 | |
| 58 | pkt->buf = av_buffer_create(data, size, |
| 59 | wrapped_avframe_release_buffer, NULL, |
| 60 | AV_BUFFER_FLAG_READONLY); |
| 61 | if (!pkt->buf) { |
| 62 | av_frame_free(&wrapped); |
| 63 | av_freep(&data); |
| 64 | return AVERROR(ENOMEM); |
| 65 | } |
| 66 | |
| 67 | av_frame_move_ref((AVFrame*)data, wrapped); |
| 68 | av_frame_free(&wrapped); |
| 69 | |
| 70 | pkt->data = data; |
| 71 | pkt->size = sizeof(*wrapped); |
| 72 | |
| 73 | pkt->flags |= AV_PKT_FLAG_KEY; |
| 74 | *got_packet = 1; |
| 75 | return 0; |
| 76 | } |
| 77 | |
| 78 | AVCodec ff_wrapped_avframe_encoder = { |
| 79 | .name = "wrapped_avframe", |
| 80 | .long_name = NULL_IF_CONFIG_SMALL("AVFrame to AVPacket passthrough"), |
| 81 | .type = AVMEDIA_TYPE_VIDEO, |
| 82 | .id = AV_CODEC_ID_WRAPPED_AVFRAME, |
| 83 | .encode2 = wrapped_avframe_encode, |
| 84 | .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, |
| 85 | }; |
| 86 |