1 /*
2 * generic decoding-related code
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #ifndef AVCODEC_DECODE_H
22 #define AVCODEC_DECODE_H
23
27
29
30 /**
31 * This struct stores per-frame lavc-internal data and is attached to it via
32 * private_ref.
33 */
35 /**
36 * The callback to perform some delayed processing on the frame right
37 * before it is returned to the caller.
38 *
39 * @note This code is called at some unspecified point after the frame is
40 * returned from the decoder's decode/receive_frame call. Therefore it cannot rely
41 * on AVCodecContext being in any specific state, so it does not get to
42 * access AVCodecContext directly at all. All the state it needs must be
43 * stored in the post_process_opaque object.
44 */
48
49 /**
50 * Per-frame private data for hwaccels.
51 */
55
56 /**
57 * Called by decoders to get the next packet for decoding.
58 *
59 * @param pkt An empty packet to be filled with data.
60 * @return 0 if a new reference has been successfully written to pkt
61 * AVERROR(EAGAIN) if no data is currently available
62 * AVERROR_EOF if and end of stream has been reached, so no more data
63 * will be available
64 */
66
68
69 /**
70 * Make sure avctx.hw_frames_ctx is set. If it's not set, the function will
71 * try to allocate it from hw_device_ctx. If that is not possible, an error
72 * message is printed, and an error code is returned.
73 */
76
78
79 #endif /* AVCODEC_DECODE_H */
This structure describes decoded (raw) audio or video data.
void(* post_process_opaque_free)(void *opaque)
void(* hwaccel_priv_free)(void *priv)
int(* post_process)(void *logctx, AVFrame *frame)
The callback to perform some delayed processing on the frame right before it is returned to the calle...
void * post_process_opaque
reference-counted frame API
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
Libavcodec external API header.
main external API structure.
void ff_decode_bsfs_uninit(AVCodecContext *avctx)
refcounted data buffer API
int ff_attach_decode_data(AVFrame *frame)
int ff_decode_get_packet(AVCodecContext *avctx, AVPacket *pkt)
Called by decoders to get the next packet for decoding.
This struct stores per-frame lavc-internal data and is attached to it via private_ref.
int ff_decode_get_hw_frames_ctx(AVCodecContext *avctx, enum AVHWDeviceType dev_type)
Make sure avctx.hw_frames_ctx is set.
void * hwaccel_priv
Per-frame private data for hwaccels.
This structure stores compressed data.