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mpv/demux/packet.h

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core, demux, vd_ffmpeg: pass side data from demux_lavf to vd_ffmpeg Pass the libavformat packet side_data field from demux_lavf to vd_ffmpeg. Libavcodec/libavformat use this field for palette data, and passing it is required for the playback of some paletted video codecs. The implementation works by giving vd_ffmpeg a copy of the struct demux_packet used to store the video packet (from which it can access the avpacket field). The definition of struct demux_packet is moved to new file demux_packet.h so that vd_ffmpeg.c can use it without including all of demuxer.h.
2011-08-20 17:25:43 +00:00
/*
* This file is part of mplayer2.
*
* mplayer2 is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mplayer2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mplayer2; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPLAYER_DEMUX_PACKET_H
#define MPLAYER_DEMUX_PACKET_H
demux, vd_ffmpeg: fix demux keyframe flag, set AV_PKT_FLAG_KEY There was some confusion about the "flags" field in demuxer packets. Demuxers set it to either 1 or 0x10 to indicate a keyframe (and the field was not used to indicate anything else). This didn't cause visible problems because nothing read the value. Replace the "flags" field with a boolean "keyframe" field. Set AV_PKT_FLAG_KEY based on this field in packets fed to libavcodec video decoders (looks like PNG and ZeroCodec are the only ones which depend on values from demuxer; previously this was hardcoded to true for PNG). Make demux_mf set the keyframe field in every packet. This matters for PNG files now that the demuxer flag is forwarded to libavcodec. Fix logic setting the field in demux_mkv. It had probably not been updated when adding SimpleBlock support. This probably makes no difference for any current practical use.
2012-07-24 21:23:27 +00:00
#include <stdbool.h>
demux: move packet functions to a separate source file
2014-07-05 14:45:28 +00:00
#include <stddef.h>
demux: rename demux_packet.h to packet.h This always bothered me.
2013-11-18 17:46:44 +00:00
#include <inttypes.h>
core, demux, vd_ffmpeg: pass side data from demux_lavf to vd_ffmpeg Pass the libavformat packet side_data field from demux_lavf to vd_ffmpeg. Libavcodec/libavformat use this field for palette data, and passing it is required for the playback of some paletted video codecs. The implementation works by giving vd_ffmpeg a copy of the struct demux_packet used to store the video packet (from which it can access the avpacket field). The definition of struct demux_packet is moved to new file demux_packet.h so that vd_ffmpeg.c can use it without including all of demuxer.h.
2011-08-20 17:25:43 +00:00
// Holds one packet/frame/whatever
typedef struct demux_packet {
int len;
double pts;
demux: export dts from demux_lavf, use it for avi Having the DTS directly can be useful for restoring PTS values. The avi file format doesn't actually store PTS values, just DTS. An older hack explicitly exported the DTS as PTS (ignoring the [I assume] genpts generated non-sense PTS), which is not necessary anymore due to this change.
2013-11-25 22:13:01 +00:00
double dts;
core, demux, vd_ffmpeg: pass side data from demux_lavf to vd_ffmpeg Pass the libavformat packet side_data field from demux_lavf to vd_ffmpeg. Libavcodec/libavformat use this field for palette data, and passing it is required for the playback of some paletted video codecs. The implementation works by giving vd_ffmpeg a copy of the struct demux_packet used to store the video packet (from which it can access the avpacket field). The definition of struct demux_packet is moved to new file demux_packet.h so that vd_ffmpeg.c can use it without including all of demuxer.h.
2011-08-20 17:25:43 +00:00
double duration;
demux: simplify handling of filepos field demuxer->filepos contains the byte offset of the last read packet. This is so that the player can estimate the current playback position, if no proper timestamps are available. Simplify it to use demux_packet->pos in the generic demuxer code, instead of bothering every demuxer implementation about it. (Note that this is still a bit incorrect: it relfects the position of the last packet read by the demuxer, not that returned to the user. But that was already broken, and is not that trivial to fix.)
2013-11-16 20:04:28 +00:00
int64_t pos; // position in source file byte stream
core, demux, vd_ffmpeg: pass side data from demux_lavf to vd_ffmpeg Pass the libavformat packet side_data field from demux_lavf to vd_ffmpeg. Libavcodec/libavformat use this field for palette data, and passing it is required for the playback of some paletted video codecs. The implementation works by giving vd_ffmpeg a copy of the struct demux_packet used to store the video packet (from which it can access the avpacket field). The definition of struct demux_packet is moved to new file demux_packet.h so that vd_ffmpeg.c can use it without including all of demuxer.h.
2011-08-20 17:25:43 +00:00
unsigned char *buffer;
demux, vd_ffmpeg: fix demux keyframe flag, set AV_PKT_FLAG_KEY There was some confusion about the "flags" field in demuxer packets. Demuxers set it to either 1 or 0x10 to indicate a keyframe (and the field was not used to indicate anything else). This didn't cause visible problems because nothing read the value. Replace the "flags" field with a boolean "keyframe" field. Set AV_PKT_FLAG_KEY based on this field in packets fed to libavcodec video decoders (looks like PNG and ZeroCodec are the only ones which depend on values from demuxer; previously this was hardcoded to true for PNG). Make demux_mf set the keyframe field in every packet. This matters for PNG files now that the demuxer flag is forwarded to libavcodec. Fix logic setting the field in demux_mkv. It had probably not been updated when adding SimpleBlock support. This probably makes no difference for any current practical use.
2012-07-24 21:23:27 +00:00
bool keyframe;
demux_packet: add source stream index Might be helpful later.
2013-11-16 20:28:59 +00:00
int stream; // source stream index
core, demux, vd_ffmpeg: pass side data from demux_lavf to vd_ffmpeg Pass the libavformat packet side_data field from demux_lavf to vd_ffmpeg. Libavcodec/libavformat use this field for palette data, and passing it is required for the playback of some paletted video codecs. The implementation works by giving vd_ffmpeg a copy of the struct demux_packet used to store the video packet (from which it can access the avpacket field). The definition of struct demux_packet is moved to new file demux_packet.h so that vd_ffmpeg.c can use it without including all of demuxer.h.
2011-08-20 17:25:43 +00:00
struct demux_packet *next;
demux: always use AVPacket This is a simplification, because it lets us use the AVPacket functions, instead of handling the details manually. It also allows the libavcodec rawvideo decoder to use reference counting, so it doesn't have to memcpy() the full image data. The change in av_common.c enables this. This change is somewhat risky, because we rely on the following AVPacket implementation details and assumptions: - av_packet_ref() doesn't access the input padding, and just copies the data. By the API, AVPacket is always padded, and we violate this. The lavc implementation would have to go out of its way to make this a real problem, though. - We hope that the way we make the AVPacket refcountable in av_common.c is actually supported API-usage. It's hard to tell whether it is. Of course we still use our own "old" demux_packet struct, just so that libav* API usage is somewhat isolated.
2014-08-24 15:45:28 +00:00
struct AVPacket *avpacket; // keep the buffer allocation
core, demux, vd_ffmpeg: pass side data from demux_lavf to vd_ffmpeg Pass the libavformat packet side_data field from demux_lavf to vd_ffmpeg. Libavcodec/libavformat use this field for palette data, and passing it is required for the playback of some paletted video codecs. The implementation works by giving vd_ffmpeg a copy of the struct demux_packet used to store the video packet (from which it can access the avpacket field). The definition of struct demux_packet is moved to new file demux_packet.h so that vd_ffmpeg.c can use it without including all of demuxer.h.
2011-08-20 17:25:43 +00:00
} demux_packet_t;
demux: move packet functions to a separate source file
2014-07-05 14:45:28 +00:00
struct demux_packet *new_demux_packet(size_t len);
demux: always use AVPacket This is a simplification, because it lets us use the AVPacket functions, instead of handling the details manually. It also allows the libavcodec rawvideo decoder to use reference counting, so it doesn't have to memcpy() the full image data. The change in av_common.c enables this. This change is somewhat risky, because we rely on the following AVPacket implementation details and assumptions: - av_packet_ref() doesn't access the input padding, and just copies the data. By the API, AVPacket is always padded, and we violate this. The lavc implementation would have to go out of its way to make this a real problem, though. - We hope that the way we make the AVPacket refcountable in av_common.c is actually supported API-usage. It's hard to tell whether it is. Of course we still use our own "old" demux_packet struct, just so that libav* API usage is somewhat isolated.
2014-08-24 15:45:28 +00:00
struct demux_packet *new_demux_packet_from_avpacket(struct AVPacket *avpkt);
demux: move packet functions to a separate source file
2014-07-05 14:45:28 +00:00
struct demux_packet *new_demux_packet_from(void *data, size_t len);
void demux_packet_shorten(struct demux_packet *dp, size_t len);
void free_demux_packet(struct demux_packet *dp);
struct demux_packet *demux_copy_packet(struct demux_packet *dp);
demux_mkv: refactor packet parsing Makes it somewhat more uniform, and breaks up the awfully deep nesting. This implicitly changes multiple small details, rather than only moving code around. In particular, this computes the packet fields first and parses them afterwards, which is needed for the next commit.
2015-02-05 20:52:07 +00:00
void demux_packet_copy_attribs(struct demux_packet *dst, struct demux_packet *src);
demux_mkv: implement audio skipping/trimming This mechanism was introduced for Opus, and allows correct skipping of "preroll" data, as well as discarding trailing audio if the file's length isn't a multiple of the audio frame size. Not sure how to handle seeking. I don't understand the purpose of the SeekPreRoll element. This was tested with correctness_trimming_nobeeps.opus, remuxed to mka with mkvmerge v7.2.0. It seems to be correct, although the reported file duration is incorrect (maybe a mkvmerge issue).
2014-11-03 19:00:34 +00:00
int demux_packet_set_padding(struct demux_packet *dp, int start, int end);
core, demux, vd_ffmpeg: pass side data from demux_lavf to vd_ffmpeg Pass the libavformat packet side_data field from demux_lavf to vd_ffmpeg. Libavcodec/libavformat use this field for palette data, and passing it is required for the playback of some paletted video codecs. The implementation works by giving vd_ffmpeg a copy of the struct demux_packet used to store the video packet (from which it can access the avpacket field). The definition of struct demux_packet is moved to new file demux_packet.h so that vd_ffmpeg.c can use it without including all of demuxer.h.
2011-08-20 17:25:43 +00:00
#endif /* MPLAYER_DEMUX_PACKET_H */
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