| Line | Branch | Exec | Source |
|---|---|---|---|
| 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 "codec_internal.h" | ||
| 29 | #include "decode.h" | ||
| 30 | |||
| 31 | #include "libavutil/frame.h" | ||
| 32 | #include "libavutil/buffer.h" | ||
| 33 | #include "libavutil/mem.h" | ||
| 34 | |||
| 35 | 74 | static void wrapped_avframe_release_buffer(void *unused, uint8_t *data) | |
| 36 | { | ||
| 37 | 74 | AVFrame *frame = (AVFrame *)data; | |
| 38 | |||
| 39 | 74 | av_frame_free(&frame); | |
| 40 | 74 | } | |
| 41 | |||
| 42 | 74 | static int wrapped_avframe_encode(AVCodecContext *avctx, AVPacket *pkt, | |
| 43 | const AVFrame *frame, int *got_packet) | ||
| 44 | { | ||
| 45 | 74 | AVFrame *wrapped = av_frame_clone(frame); | |
| 46 | uint8_t *data; | ||
| 47 | 74 | int size = sizeof(*wrapped) + AV_INPUT_BUFFER_PADDING_SIZE; | |
| 48 | |||
| 49 |
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74 | if (!wrapped) |
| 50 | ✗ | return AVERROR(ENOMEM); | |
| 51 | |||
| 52 | 74 | data = av_mallocz(size); | |
| 53 |
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74 | if (!data) { |
| 54 | ✗ | av_frame_free(&wrapped); | |
| 55 | ✗ | return AVERROR(ENOMEM); | |
| 56 | } | ||
| 57 | |||
| 58 | 74 | pkt->buf = av_buffer_create(data, size, | |
| 59 | wrapped_avframe_release_buffer, NULL, | ||
| 60 | AV_BUFFER_FLAG_READONLY); | ||
| 61 |
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74 | if (!pkt->buf) { |
| 62 | ✗ | av_frame_free(&wrapped); | |
| 63 | ✗ | av_freep(&data); | |
| 64 | ✗ | return AVERROR(ENOMEM); | |
| 65 | } | ||
| 66 | |||
| 67 | 74 | av_frame_move_ref((AVFrame*)data, wrapped); | |
| 68 | 74 | av_frame_free(&wrapped); | |
| 69 | |||
| 70 | 74 | pkt->data = data; | |
| 71 | 74 | pkt->size = sizeof(*wrapped); | |
| 72 | |||
| 73 | 74 | pkt->flags |= AV_PKT_FLAG_KEY; | |
| 74 | 74 | *got_packet = 1; | |
| 75 | 74 | return 0; | |
| 76 | } | ||
| 77 | |||
| 78 | 717 | static int wrapped_avframe_decode(AVCodecContext *avctx, AVFrame *out, | |
| 79 | int *got_frame, AVPacket *pkt) | ||
| 80 | { | ||
| 81 | AVFrame *in; | ||
| 82 | int err; | ||
| 83 | |||
| 84 |
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717 | if (!(pkt->flags & AV_PKT_FLAG_TRUSTED)) { |
| 85 | // This decoder is not usable with untrusted input. | ||
| 86 | ✗ | return AVERROR(EPERM); | |
| 87 | } | ||
| 88 | |||
| 89 |
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717 | if (pkt->size < sizeof(AVFrame)) |
| 90 | ✗ | return AVERROR(EINVAL); | |
| 91 | |||
| 92 | 717 | in = (AVFrame*)pkt->data; | |
| 93 | |||
| 94 | 717 | err = av_frame_ref(out, in); | |
| 95 |
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717 | if (err < 0) |
| 96 | ✗ | return err; | |
| 97 | |||
| 98 | 717 | err = ff_decode_frame_props(avctx, out); | |
| 99 |
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717 | if (err < 0) |
| 100 | ✗ | return err; | |
| 101 | |||
| 102 | 717 | *got_frame = 1; | |
| 103 | 717 | return 0; | |
| 104 | } | ||
| 105 | |||
| 106 | const FFCodec ff_wrapped_avframe_encoder = { | ||
| 107 | .p.name = "wrapped_avframe", | ||
| 108 | CODEC_LONG_NAME("AVFrame to AVPacket passthrough"), | ||
| 109 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
| 110 | .p.id = AV_CODEC_ID_WRAPPED_AVFRAME, | ||
| 111 | .p.capabilities = AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE, | ||
| 112 | FF_CODEC_ENCODE_CB(wrapped_avframe_encode), | ||
| 113 | }; | ||
| 114 | |||
| 115 | const FFCodec ff_wrapped_avframe_decoder = { | ||
| 116 | .p.name = "wrapped_avframe", | ||
| 117 | CODEC_LONG_NAME("AVPacket to AVFrame passthrough"), | ||
| 118 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
| 119 | .p.id = AV_CODEC_ID_WRAPPED_AVFRAME, | ||
| 120 | FF_CODEC_DECODE_CB(wrapped_avframe_decode), | ||
| 121 | }; | ||
| 122 |