mirror of
https://github.com/Motion-Project/motion.git
synced 2026-01-25 15:18:42 -05:00
8372f591e1
avformat_network_init only needs to be called once on startup and once on shutdown. The functions aren't thread safe, and we can't fix that by protecting them with the 'global_lock' as other functions in ffmpeg that we call and that access the same data are not protected by the global_lock (and can't be protected by that lock). Fixes #194 - the particular issue we're seeing there is something like: thread 1: lock mutex thread 1: deinit network thread 1: init network thread 1: unlock mutex thread 2: lock mutex thread 2: deinit network thread 1: call into an ffmpeg operation thread 1: ffmpeg complains "init network" not called
109 lines
3.0 KiB
C
109 lines
3.0 KiB
C
#ifndef _INCLUDE_FFMPEG_H_
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#define _INCLUDE_FFMPEG_H_
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#include <stdio.h>
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#include <stdarg.h>
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#include <sys/time.h>
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#include "config.h"
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#ifdef HAVE_FFMPEG
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#include <errno.h>
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#include <libavformat/avformat.h>
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#include <libavutil/imgutils.h>
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#include <libavutil/mathematics.h>
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#if (LIBAVFORMAT_VERSION_MAJOR >= 56)
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#define MY_PIX_FMT_YUV420P AV_PIX_FMT_YUV420P
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#define MY_PIX_FMT_YUVJ420P AV_PIX_FMT_YUVJ420P
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#define MyPixelFormat AVPixelFormat
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#else
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#define MY_PIX_FMT_YUV420P PIX_FMT_YUV420P
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#define MY_PIX_FMT_YUVJ420P PIX_FMT_YUVJ420P
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#define MyPixelFormat PixelFormat
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#endif
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#endif /* HAVE_FFMPEG */
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#define TIMELAPSE_NONE 0 /* No timelapse, regular processing */
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#define TIMELAPSE_APPEND 1 /* Use append version of timelapse */
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#define TIMELAPSE_NEW 2 /* Use create new file version of timelapse */
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struct ffmpeg {
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#ifdef HAVE_FFMPEG
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AVFormatContext *oc;
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AVStream *video_st;
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AVCodecContext *c;
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AVFrame *picture; /* contains default image pointers */
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uint8_t *video_outbuf;
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int video_outbuf_size;
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void *udata; /* U & V planes for greyscale images */
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int vbr; /* variable bitrate setting */
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char codec[20]; /* codec name */
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int tlapse;
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int64_t last_pts;
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struct timeval start_time;
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#else
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int dummy;
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#endif
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};
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/* Initialize FFmpeg stuff. Needs to be called before ffmpeg_open. */
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void ffmpeg_init(void);
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/** Finalise ffmpeg; call only after all threads have finished */
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void ffmpeg_finalise(void);
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struct ffmpeg *ffmpeg_open(
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const char *ffmpeg_video_codec,
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char *filename,
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unsigned char *y, /* YUV420 Y plane */
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unsigned char *u, /* YUV420 U plane */
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unsigned char *v, /* YUV420 V plane */
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int width,
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int height,
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int rate, /* framerate, fps */
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int bps, /* bitrate; bits per second */
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int vbr, /* variable bitrate */
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int tlapse
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);
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/* Puts the image pointed to by the picture member of struct ffmpeg. */
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int ffmpeg_put_image(struct ffmpeg *);
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/* Puts the image defined by u, y and v (YUV420 format). */
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int ffmpeg_put_other_image(
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struct ffmpeg *ffmpeg,
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unsigned char *y,
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unsigned char *u,
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unsigned char *v
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);
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/* Closes the mpeg file. */
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void ffmpeg_close(struct ffmpeg *);
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/* Setup an avcodec log handler. */
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void ffmpeg_avcodec_log(void *, int, const char *, va_list);
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#ifdef HAVE_FFMPEG
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AVFrame *my_frame_alloc(void);
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void my_frame_free(AVFrame *frame);
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int ffmpeg_put_frame(struct ffmpeg *, AVFrame *);
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void ffmpeg_cleanups(struct ffmpeg *);
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AVFrame *ffmpeg_prepare_frame(struct ffmpeg *, unsigned char *,
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unsigned char *, unsigned char *);
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int my_image_get_buffer_size(enum MyPixelFormat pix_fmt, int width, int height);
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int my_image_copy_to_buffer(AVFrame *frame,uint8_t *buffer_ptr,enum MyPixelFormat pix_fmt,int width,int height,int dest_size);
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int my_image_fill_arrays(AVFrame *frame,uint8_t *buffer_ptr,enum MyPixelFormat pix_fmt,int width,int height);
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void my_packet_unref(AVPacket pkt);
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#endif
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#endif /* _INCLUDE_FFMPEG_H_ */
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