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ffmpeg.c
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ffmpeg.c
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/*
*
* ffmpeg.c
*
* This software is distributed under the GNU Public License version 2
* See also the file 'COPYING'.
*
* The contents of this file has been derived from output_example.c
* and apiexample.c from the FFmpeg distribution.
*
* This file has been modified so that only major versions greater than
* 53 are supported.
* Note that while the conditions are based upon LIBAVFORMAT, not all of the changes are
* specific to libavformat.h. Some changes could be related to other components of ffmpeg.
* This is for simplicity. The avformat version has historically changed at the same time
* as the other components so it is easier to have a single version number to track rather
* than the particular version numbers which are associated with each component.
* The libav variant also has different apis with the same major/minor version numbers.
* As such, it is occasionally necessary to look at the microversion number. Numbers
* greater than 100 for micro version indicate ffmpeg whereas numbers less than 100
* indicate libav
*/
#include "motion.h"
#ifdef HAVE_FFMPEG
/****************************************************************************
* The section below is the "my" section of functions.
* These are designed to be extremely simple version specific
* variants of the libav functions.
****************************************************************************/
#if (LIBAVFORMAT_VERSION_MAJOR >= 55) || ((LIBAVFORMAT_VERSION_MAJOR == 54) && (LIBAVFORMAT_VERSION_MINOR > 6))
#define MY_FLAG_READ AVIO_FLAG_READ
#define MY_FLAG_WRITE AVIO_FLAG_WRITE
#define MY_FLAG_READ_WRITE AVIO_FLAG_READ_WRITE
#else //Older versions
#define MY_FLAG_READ URL_RDONLY
#define MY_FLAG_WRITE URL_WRONLY
#define MY_FLAG_READ_WRITE URL_RDWR
#endif
/*********************************************/
#if (LIBAVFORMAT_VERSION_MAJOR >= 56)
#define MY_CODEC_ID_MSMPEG4V2 AV_CODEC_ID_MSMPEG4V2
#define MY_CODEC_ID_FLV1 AV_CODEC_ID_FLV1
#define MY_CODEC_ID_FFV1 AV_CODEC_ID_FFV1
#define MY_CODEC_ID_NONE AV_CODEC_ID_NONE
#define MY_CODEC_ID_MPEG2VIDEO AV_CODEC_ID_MPEG2VIDEO
#define MY_CODEC_ID_H264 AV_CODEC_ID_H264
#define MY_CODEC_ID_HEVC AV_CODEC_ID_HEVC
#else
#define MY_CODEC_ID_MSMPEG4V2 CODEC_ID_MSMPEG4V2
#define MY_CODEC_ID_FLV1 CODEC_ID_FLV1
#define MY_CODEC_ID_FFV1 CODEC_ID_FFV1
#define MY_CODEC_ID_NONE CODEC_ID_NONE
#define MY_CODEC_ID_MPEG2VIDEO CODEC_ID_MPEG2VIDEO
#define MY_CODEC_ID_H264 CODEC_ID_H264
#define MY_CODEC_ID_HEVC CODEC_ID_H264
#endif
/*********************************************/
AVFrame *my_frame_alloc(void){
AVFrame *pic;
#if (LIBAVFORMAT_VERSION_MAJOR >= 55)
pic = av_frame_alloc();
#else
pic = avcodec_alloc_frame();
#endif
return pic;
}
/*********************************************/
void my_frame_free(AVFrame *frame){
#if (LIBAVFORMAT_VERSION_MAJOR >= 55)
av_frame_free(&frame);
#else
av_freep(&frame);
#endif
}
/*********************************************/
int my_image_get_buffer_size(enum MyPixelFormat pix_fmt, int width, int height){
int retcd = 0;
#if (LIBAVFORMAT_VERSION_MAJOR >= 57)
int align = 1;
retcd = av_image_get_buffer_size(pix_fmt, width, height, align);
#else
retcd = avpicture_get_size(pix_fmt, width, height);
#endif
return retcd;
}
/*********************************************/
int my_image_copy_to_buffer(AVFrame *frame, uint8_t *buffer_ptr, enum MyPixelFormat pix_fmt,int width, int height,int dest_size){
int retcd = 0;
#if (LIBAVFORMAT_VERSION_MAJOR >= 57)
int align = 1;
retcd = av_image_copy_to_buffer((uint8_t *)buffer_ptr,dest_size
,(const uint8_t * const*)frame,frame->linesize,pix_fmt,width,height,align);
#else
retcd = avpicture_layout((const AVPicture*)frame,pix_fmt,width,height
,(unsigned char *)buffer_ptr,dest_size);
#endif
return retcd;
}
/*********************************************/
int my_image_fill_arrays(AVFrame *frame,uint8_t *buffer_ptr,enum MyPixelFormat pix_fmt,int width,int height){
int retcd = 0;
#if (LIBAVFORMAT_VERSION_MAJOR >= 57)
int align = 1;
retcd = av_image_fill_arrays(
frame->data
,frame->linesize
,buffer_ptr
,pix_fmt
,width
,height
,align
);
#else
retcd = avpicture_fill(
(AVPicture *)frame
,buffer_ptr
,pix_fmt
,width
,height);
#endif
return retcd;
}
/*********************************************/
void my_packet_unref(AVPacket pkt){
#if (LIBAVFORMAT_VERSION_MAJOR >= 57)
av_packet_unref(&pkt);
#else
av_free_packet(&pkt);
#endif
}
/*********************************************/
void my_avcodec_close(AVCodecContext *codec_context){
#if (LIBAVFORMAT_VERSION_MAJOR >= 58) || ((LIBAVFORMAT_VERSION_MAJOR == 57) && (LIBAVFORMAT_VERSION_MINOR >= 41))
avcodec_free_context(&codec_context);
#else
avcodec_close(codec_context);
#endif
}
/*********************************************/
int my_copy_packet(AVPacket *dest_pkt, AVPacket *src_pkt){
#if (LIBAVFORMAT_VERSION_MAJOR >= 55)
return av_packet_ref(dest_pkt, src_pkt);
#else
/* Old versions of libav do not support copying packet
* We therefore disable the pass through recording and
* for this function, simply do not do anything
*/
if (dest_pkt == src_pkt ){
return 0;
} else {
return 0;
}
#endif
}
/*********************************************/
/****************************************************************************
****************************************************************************
****************************************************************************/
static int ffmpeg_timelapse_exists(const char *fname){
FILE *file;
file = fopen(fname, "r");
if (file)
{
fclose(file);
return 1;
}
return 0;
}
static int ffmpeg_timelapse_append(struct ffmpeg *ffmpeg, AVPacket pkt){
FILE *file;
file = fopen(ffmpeg->oc->filename, "a");
if (!file) return -1;
fwrite(pkt.data,1,pkt.size,file);
fclose(file);
return 0;
}
static int ffmpeg_lockmgr_cb(void **arg, enum AVLockOp op){
pthread_mutex_t *mutex = *arg;
int err;
switch (op) {
case AV_LOCK_CREATE:
mutex = malloc(sizeof(*mutex));
if (!mutex)
return AVERROR(ENOMEM);
if ((err = pthread_mutex_init(mutex, NULL))) {
free(mutex);
return AVERROR(err);
}
*arg = mutex;
return 0;
case AV_LOCK_OBTAIN:
if ((err = pthread_mutex_lock(mutex)))
return AVERROR(err);
return 0;
case AV_LOCK_RELEASE:
if ((err = pthread_mutex_unlock(mutex)))
return AVERROR(err);
return 0;
case AV_LOCK_DESTROY:
if (mutex)
pthread_mutex_destroy(mutex);
free(mutex);
*arg = NULL;
return 0;
}
return 1;
}
static void ffmpeg_free_context(struct ffmpeg *ffmpeg){
if (ffmpeg->picture != NULL){
my_frame_free(ffmpeg->picture);
ffmpeg->picture = NULL;
}
if (ffmpeg->ctx_codec != NULL){
my_avcodec_close(ffmpeg->ctx_codec);
ffmpeg->ctx_codec = NULL;
}
if (ffmpeg->oc != NULL){
avformat_free_context(ffmpeg->oc);
ffmpeg->oc = NULL;
}
}
static int ffmpeg_get_oformat(struct ffmpeg *ffmpeg){
size_t codec_name_len = strcspn(ffmpeg->codec_name, ":");
char *codec_name = malloc(codec_name_len + 1);
if (codec_name == NULL) {
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Failed to allocate memory for codec name");
ffmpeg_free_context(ffmpeg);
return -1;
}
memcpy(codec_name, ffmpeg->codec_name, codec_name_len);
codec_name[codec_name_len] = 0;
/* Only the newer codec and containers can handle the really fast FPS */
if (((strcmp(codec_name, "msmpeg4") == 0) ||
(strcmp(codec_name, "mpeg4") == 0) ||
(strcmp(codec_name, "swf") == 0) ) && (ffmpeg->fps >50)){
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "The frame rate specified is too high for the ffmpeg movie type specified. Choose a different ffmpeg container or lower framerate.");
ffmpeg_free_context(ffmpeg);
free(codec_name);
return -1;
}
if (ffmpeg->tlapse == TIMELAPSE_APPEND){
ffmpeg->oc->oformat = av_guess_format ("mpeg2video", NULL, NULL);
if (ffmpeg->oc->oformat) ffmpeg->oc->oformat->video_codec = MY_CODEC_ID_MPEG2VIDEO;
strncat(ffmpeg->filename, ".mpg", 4);
if (!ffmpeg->oc->oformat) {
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "ffmpeg_video_codec option value %s is not supported", codec_name);
ffmpeg_free_context(ffmpeg);
free(codec_name);
return -1;
}
free(codec_name);
return 0;
}
if (strcmp(codec_name, "mpeg4") == 0) {
ffmpeg->oc->oformat = av_guess_format("avi", NULL, NULL);
strncat(ffmpeg->filename, ".avi", 4);
}
if (strcmp(codec_name, "msmpeg4") == 0) {
ffmpeg->oc->oformat = av_guess_format("avi", NULL, NULL);
strncat(ffmpeg->filename, ".avi", 4);
if (ffmpeg->oc->oformat) ffmpeg->oc->oformat->video_codec = MY_CODEC_ID_MSMPEG4V2;
}
if (strcmp(codec_name, "swf") == 0) {
ffmpeg->oc->oformat = av_guess_format("swf", NULL, NULL);
strncat(ffmpeg->filename, ".swf", 4);
}
if (strcmp(codec_name, "flv") == 0) {
ffmpeg->oc->oformat = av_guess_format("flv", NULL, NULL);
strncat(ffmpeg->filename, ".flv", 4);
if (ffmpeg->oc->oformat) ffmpeg->oc->oformat->video_codec = MY_CODEC_ID_FLV1;
}
if (strcmp(codec_name, "ffv1") == 0) {
ffmpeg->oc->oformat = av_guess_format("avi", NULL, NULL);
strncat(ffmpeg->filename, ".avi", 4);
if (ffmpeg->oc->oformat) ffmpeg->oc->oformat->video_codec = MY_CODEC_ID_FFV1;
}
if (strcmp(codec_name, "mov") == 0) {
ffmpeg->oc->oformat = av_guess_format("mov", NULL, NULL);
strncat(ffmpeg->filename, ".mov", 4);
}
if (strcmp(codec_name, "mp4") == 0) {
ffmpeg->oc->oformat = av_guess_format("mp4", NULL, NULL);
strncat(ffmpeg->filename, ".mp4", 4);
if (ffmpeg->oc->oformat) ffmpeg->oc->oformat->video_codec = MY_CODEC_ID_H264;
}
if (strcmp(codec_name, "mkv") == 0) {
ffmpeg->oc->oformat = av_guess_format("matroska", NULL, NULL);
strncat(ffmpeg->filename, ".mkv", 4);
if (ffmpeg->oc->oformat) ffmpeg->oc->oformat->video_codec = MY_CODEC_ID_H264;
}
if (strcmp(codec_name, "hevc") == 0) {
ffmpeg->oc->oformat = av_guess_format("mp4", NULL, NULL);
strncat(ffmpeg->filename, ".mp4", 4);
if (ffmpeg->oc->oformat) ffmpeg->oc->oformat->video_codec = MY_CODEC_ID_HEVC;
}
//Check for valid results
if (!ffmpeg->oc->oformat) {
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "codec option value %s is not supported", codec_name);
ffmpeg_free_context(ffmpeg);
free(codec_name);
return -1;
}
if (ffmpeg->oc->oformat->video_codec == MY_CODEC_ID_NONE) {
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Could not get the codec");
ffmpeg_free_context(ffmpeg);
free(codec_name);
return -1;
}
free(codec_name);
return 0;
}
static int ffmpeg_encode_video(struct ffmpeg *ffmpeg){
#if (LIBAVFORMAT_VERSION_MAJOR >= 58) || ((LIBAVFORMAT_VERSION_MAJOR == 57) && (LIBAVFORMAT_VERSION_MINOR >= 41))
//ffmpeg version 3.1 and after
int retcd = 0;
char errstr[128];
retcd = avcodec_send_frame(ffmpeg->ctx_codec, ffmpeg->picture);
if (retcd < 0 ){
av_strerror(retcd, errstr, sizeof(errstr));
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Error sending frame for encoding:%s",errstr);
return -1;
}
retcd = avcodec_receive_packet(ffmpeg->ctx_codec, &ffmpeg->pkt);
if (retcd == AVERROR(EAGAIN)){
//Buffered packet. Throw special return code
av_strerror(retcd, errstr, sizeof(errstr));
MOTION_LOG(DBG, TYPE_ENCODER, NO_ERRNO, "Receive packet threw EAGAIN returning -2 code :%s",errstr);
my_packet_unref(ffmpeg->pkt);
return -2;
}
if (retcd < 0 ){
av_strerror(retcd, errstr, sizeof(errstr));
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Error receiving encoded packet video:%s",errstr);
//Packet is freed upon failure of encoding
return -1;
}
return 0;
#elif (LIBAVFORMAT_VERSION_MAJOR >= 55) || ((LIBAVFORMAT_VERSION_MAJOR == 54) && (LIBAVFORMAT_VERSION_MINOR > 6))
int retcd = 0;
char errstr[128];
int got_packet_ptr;
retcd = avcodec_encode_video2(ffmpeg->ctx_codec, &ffmpeg->pkt, ffmpeg->picture, &got_packet_ptr);
if (retcd < 0 ){
av_strerror(retcd, errstr, sizeof(errstr));
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Error encoding video:%s",errstr);
//Packet is freed upon failure of encoding
return -1;
}
if (got_packet_ptr == 0){
//Buffered packet. Throw special return code
my_packet_unref(ffmpeg->pkt);
return -2;
}
return 0;
#else
int retcd = 0;
uint8_t *video_outbuf;
int video_outbuf_size;
video_outbuf_size = (ffmpeg->ctx_codec->width +16) * (ffmpeg->ctx_codec->height +16) * 1;
video_outbuf = mymalloc(video_outbuf_size);
retcd = avcodec_encode_video(ffmpeg->video_st->codec, video_outbuf, video_outbuf_size, ffmpeg->picture);
if (retcd < 0 ){
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Error encoding video");
my_packet_unref(ffmpeg->pkt);
return -1;
}
if (retcd == 0 ){
// No bytes encoded => buffered=>special handling
my_packet_unref(ffmpeg->pkt);
return -2;
}
// Encoder did not provide metadata, set it up manually
ffmpeg->pkt.size = retcd;
ffmpeg->pkt.data = video_outbuf;
if (ffmpeg->picture->key_frame == 1)
ffmpeg->pkt.flags |= AV_PKT_FLAG_KEY;
ffmpeg->pkt.pts = ffmpeg->picture->pts;
ffmpeg->pkt.dts = ffmpeg->pkt.pts;
free(video_outbuf);
return 0;
#endif
}
static int ffmpeg_set_pts(struct ffmpeg *ffmpeg, const struct timeval *tv1){
int64_t pts_interval;
if (ffmpeg->tlapse != TIMELAPSE_NONE) {
ffmpeg->last_pts++;
ffmpeg->picture->pts = ffmpeg->last_pts;
} else {
pts_interval = ((1000000L * (tv1->tv_sec - ffmpeg->start_time.tv_sec)) + tv1->tv_usec - ffmpeg->start_time.tv_usec);
if (pts_interval < 0){
/* This can occur when we have pre-capture frames. Reset start time of video. */
ffmpeg_reset_movie_start_time(ffmpeg, tv1);
pts_interval = 0;
}
ffmpeg->picture->pts = av_rescale_q(pts_interval,(AVRational){1, 1000000L},ffmpeg->video_st->time_base) + ffmpeg->base_pts;
if (ffmpeg->test_mode == 1){
MOTION_LOG(INF, TYPE_ENCODER, NO_ERRNO, "PTS %"PRId64" Base PTS %"PRId64" ms interval %"PRId64" timebase %d-%d",
ffmpeg->picture->pts,ffmpeg->base_pts,pts_interval,
ffmpeg->video_st->time_base.num,ffmpeg->video_st->time_base.den);
}
if (ffmpeg->picture->pts <= ffmpeg->last_pts){
//We have a problem with our motion loop timing and sending frames or the rounding into the PTS.
if (ffmpeg->test_mode == 1){
MOTION_LOG(INF, TYPE_ENCODER, NO_ERRNO, "BAD TIMING!! Frame skipped.");
}
return -1;
}
ffmpeg->last_pts = ffmpeg->picture->pts;
}
return 0;
}
static int ffmpeg_set_pktpts(struct ffmpeg *ffmpeg, const struct timeval *tv1){
int64_t pts_interval;
if (ffmpeg->tlapse != TIMELAPSE_NONE) {
ffmpeg->last_pts++;
ffmpeg->pkt.pts = ffmpeg->last_pts;
} else {
pts_interval = ((1000000L * (tv1->tv_sec - ffmpeg->start_time.tv_sec)) + tv1->tv_usec - ffmpeg->start_time.tv_usec);
if (pts_interval < 0){
/* This can occur when we have pre-capture frames. Reset start time of video. */
ffmpeg_reset_movie_start_time(ffmpeg, tv1);
pts_interval = 0;
}
ffmpeg->pkt.pts = av_rescale_q(pts_interval,(AVRational){1, 1000000L},ffmpeg->video_st->time_base) + ffmpeg->base_pts;
if (ffmpeg->pkt.pts <= ffmpeg->last_pts){
//We have a problem with our motion loop timing and sending frames or the rounding into the PTS.
if (ffmpeg->test_mode == 1){
MOTION_LOG(INF, TYPE_ENCODER, NO_ERRNO, "BAD TIMING!! Frame skipped.");
}
return -1;
}
ffmpeg->last_pts = ffmpeg->pkt.pts;
ffmpeg->pkt.dts=ffmpeg->pkt.pts;
}
return 0;
}
static int ffmpeg_set_quality(struct ffmpeg *ffmpeg){
ffmpeg->opts = 0;
if (ffmpeg->vbr > 100) ffmpeg->vbr = 100;
if (ffmpeg->ctx_codec->codec_id == MY_CODEC_ID_H264 ||
ffmpeg->ctx_codec->codec_id == MY_CODEC_ID_HEVC){
if (ffmpeg->vbr <= 0)
ffmpeg->vbr = 45; // default to 45% quality
av_dict_set(&ffmpeg->opts, "preset", "ultrafast", 0);
av_dict_set(&ffmpeg->opts, "tune", "zerolatency", 0);
if ((strcmp(ffmpeg->codec->name, "h264_omx") == 0) || (strcmp(ffmpeg->codec->name, "mpeg4_omx") == 0)) {
// H264 OMX encoder quality can only be controlled via bit_rate
// bit_rate = ffmpeg->width * ffmpeg->height * ffmpeg->fps * quality_factor
ffmpeg->vbr = (ffmpeg->width * ffmpeg->height * ffmpeg->fps * ffmpeg->vbr) >> 7;
// Clip bit rate to min
if (ffmpeg->vbr < 4000) // magic number
ffmpeg->vbr = 4000;
ffmpeg->ctx_codec->profile = FF_PROFILE_H264_HIGH;
ffmpeg->ctx_codec->bit_rate = ffmpeg->vbr;
} else {
// Control other H264 encoders quality via CRF
char crf[4];
ffmpeg->vbr = (int)(( (100-ffmpeg->vbr) * 51)/100);
snprintf(crf, 4, "%d", ffmpeg->vbr);
av_dict_set(&ffmpeg->opts, "crf", crf, 0);
}
} else {
/* The selection of 8000 in the else is a subjective number based upon viewing output files */
if (ffmpeg->vbr > 0){
ffmpeg->vbr =(int)(((100-ffmpeg->vbr)*(100-ffmpeg->vbr)*(100-ffmpeg->vbr) * 8000) / 1000000) + 1;
ffmpeg->ctx_codec->flags |= CODEC_FLAG_QSCALE;
ffmpeg->ctx_codec->global_quality=ffmpeg->vbr;
}
}
MOTION_LOG(INF, TYPE_ENCODER, NO_ERRNO, "%s codec vbr/crf/bit_rate: %d", ffmpeg->codec->name, ffmpeg->vbr);
return 0;
}
static int ffmpeg_codec_is_blacklisted(const char *codec_name){
static const char *blacklisted_codec[] =
{
/* h264_omx & ffmpeg combination locks up on Raspberry Pi.
* To use h264_omx encoder and workaround the lock up issue:
* - disable input_zerocopy in ffmpeg omx.c:omx_encode_init function.
* - remove the "h264_omx" from this blacklist.
* More information: https://github.com/Motion-Project/motion/issues/433
*/
"h264_omx",
};
size_t i;
for (i = 0; i < sizeof(blacklisted_codec)/sizeof(blacklisted_codec[0]); i++) {
if (strcmp(codec_name, blacklisted_codec[i]) == 0)
return 1;
}
return 0;
}
static int ffmpeg_set_codec(struct ffmpeg *ffmpeg){
int retcd;
char errstr[128];
int chkrate;
size_t codec_name_len = strcspn(ffmpeg->codec_name, ":");
ffmpeg->codec = NULL;
if (ffmpeg->codec_name[codec_name_len]) {
if (ffmpeg_codec_is_blacklisted(&ffmpeg->codec_name[codec_name_len+1])) {
MOTION_LOG(WRN, TYPE_ENCODER, NO_ERRNO, "Preferred codec %s has been blacklisted",
&ffmpeg->codec_name[codec_name_len+1]);
} else {
ffmpeg->codec = avcodec_find_encoder_by_name(&ffmpeg->codec_name[codec_name_len+1]);
if (!ffmpeg->codec)
MOTION_LOG(WRN, TYPE_ENCODER, NO_ERRNO, "Preferred codec %s not found",
&ffmpeg->codec_name[codec_name_len+1]);
}
}
if (!ffmpeg->codec)
ffmpeg->codec = avcodec_find_encoder(ffmpeg->oc->oformat->video_codec);
if (!ffmpeg->codec) {
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Codec %s not found", ffmpeg->codec_name);
ffmpeg_free_context(ffmpeg);
return -1;
}
if (ffmpeg->codec_name[codec_name_len])
MOTION_LOG(NTC, TYPE_ENCODER, NO_ERRNO, "Using codec %s", ffmpeg->codec->name);
#if (LIBAVFORMAT_VERSION_MAJOR >= 58) || ((LIBAVFORMAT_VERSION_MAJOR == 57) && (LIBAVFORMAT_VERSION_MINOR >= 41))
//If we provide the codec to this, it results in a memory leak. ffmpeg ticket: 5714
ffmpeg->video_st = avformat_new_stream(ffmpeg->oc, NULL);
if (!ffmpeg->video_st) {
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Could not alloc stream");
ffmpeg_free_context(ffmpeg);
return -1;
}
ffmpeg->ctx_codec = avcodec_alloc_context3(ffmpeg->codec);
if (ffmpeg->ctx_codec == NULL) {
MOTION_LOG(ERR, TYPE_NETCAM, NO_ERRNO, "Failed to allocate decoder!");
ffmpeg_free_context(ffmpeg);
return -1;
}
#else
ffmpeg->video_st = avformat_new_stream(ffmpeg->oc, ffmpeg->codec);
if (!ffmpeg->video_st) {
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Could not alloc stream");
ffmpeg_free_context(ffmpeg);
return -1;
}
ffmpeg->ctx_codec = ffmpeg->video_st->codec;
#endif
if (ffmpeg->tlapse != TIMELAPSE_NONE) {
ffmpeg->ctx_codec->gop_size = 1;
} else {
if (ffmpeg->fps <= 5){
ffmpeg->ctx_codec->gop_size = 1;
} else if (ffmpeg->fps > 30){
ffmpeg->ctx_codec->gop_size = 15;
} else {
ffmpeg->ctx_codec->gop_size = (ffmpeg->fps / 2);
}
}
/* For certain containers, setting the fps to very low numbers results in
** a very poor quality playback. We can set the FPS to a higher number and
** then let the PTS display the frames correctly.
*/
if ((ffmpeg->tlapse == TIMELAPSE_NONE) && (ffmpeg->fps <= 5)){
if ((strcmp(ffmpeg->codec_name, "msmpeg4") == 0) ||
(strcmp(ffmpeg->codec_name, "flv") == 0) ||
(strcmp(ffmpeg->codec_name, "mov") == 0) ||
(strcmp(ffmpeg->codec_name, "mp4") == 0) ||
(strcmp(ffmpeg->codec_name, "hevc") == 0) ||
(strcmp(ffmpeg->codec_name, "mpeg4") == 0)) {
MOTION_LOG(NTC, TYPE_ENCODER, NO_ERRNO, "Low fps. Encoding %d frames into a %d frames container.", ffmpeg->fps, 10);
ffmpeg->fps = 10;
}
}
ffmpeg->ctx_codec->codec_id = ffmpeg->oc->oformat->video_codec;
ffmpeg->ctx_codec->codec_type = AVMEDIA_TYPE_VIDEO;
ffmpeg->ctx_codec->bit_rate = ffmpeg->bps;
ffmpeg->ctx_codec->width = ffmpeg->width;
ffmpeg->ctx_codec->height = ffmpeg->height;
ffmpeg->ctx_codec->time_base.num = 1;
ffmpeg->ctx_codec->time_base.den = ffmpeg->fps;
ffmpeg->ctx_codec->pix_fmt = MY_PIX_FMT_YUV420P;
ffmpeg->ctx_codec->max_b_frames = 0;
if (strcmp(ffmpeg->codec_name, "ffv1") == 0){
ffmpeg->ctx_codec->strict_std_compliance = -2;
ffmpeg->ctx_codec->level = 3;
}
ffmpeg->ctx_codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
retcd = ffmpeg_set_quality(ffmpeg);
if (retcd < 0){
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Unable to set quality");
return -1;
}
retcd = avcodec_open2(ffmpeg->ctx_codec, ffmpeg->codec, &ffmpeg->opts);
if (retcd < 0) {
if (ffmpeg->codec->supported_framerates) {
const AVRational *fps = ffmpeg->codec->supported_framerates;
while (fps->num) {
MOTION_LOG(INF, TYPE_ENCODER, NO_ERRNO, "Reported FPS Supported %d/%d", fps->num, fps->den);
fps++;
}
}
chkrate = 1;
while ((chkrate < 36) && (retcd != 0)) {
ffmpeg->ctx_codec->time_base.den = chkrate;
retcd = avcodec_open2(ffmpeg->ctx_codec, ffmpeg->codec, &ffmpeg->opts);
chkrate++;
}
if (retcd < 0){
av_strerror(retcd, errstr, sizeof(errstr));
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Could not open codec %s",errstr);
av_dict_free(&ffmpeg->opts);
ffmpeg_free_context(ffmpeg);
return -1;
}
}
av_dict_free(&ffmpeg->opts);
return 0;
}
static int ffmpeg_set_stream(struct ffmpeg *ffmpeg){
#if (LIBAVFORMAT_VERSION_MAJOR >= 58) || ((LIBAVFORMAT_VERSION_MAJOR == 57) && (LIBAVFORMAT_VERSION_MINOR >= 41))
int retcd;
char errstr[128];
retcd = avcodec_parameters_from_context(ffmpeg->video_st->codecpar,ffmpeg->ctx_codec);
if (retcd < 0) {
av_strerror(retcd, errstr, sizeof(errstr));
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Failed to copy decoder parameters!: %s", errstr);
ffmpeg_free_context(ffmpeg);
return -1;
}
#endif
ffmpeg->video_st->time_base = (AVRational){1, ffmpeg->fps};
return 0;
}
static int ffmpeg_set_picture(struct ffmpeg *ffmpeg){
ffmpeg->picture = my_frame_alloc();
if (!ffmpeg->picture) {
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "could not alloc frame");
ffmpeg_free_context(ffmpeg);
return -1;
}
/* Take care of variable bitrate setting. */
if (ffmpeg->vbr)
ffmpeg->picture->quality = ffmpeg->vbr;
ffmpeg->picture->linesize[0] = ffmpeg->ctx_codec->width;
ffmpeg->picture->linesize[1] = ffmpeg->ctx_codec->width / 2;
ffmpeg->picture->linesize[2] = ffmpeg->ctx_codec->width / 2;
ffmpeg->picture->format = ffmpeg->ctx_codec->pix_fmt;
ffmpeg->picture->width = ffmpeg->ctx_codec->width;
ffmpeg->picture->height = ffmpeg->ctx_codec->height;
return 0;
}
static int ffmpeg_set_outputfile(struct ffmpeg *ffmpeg){
int retcd;
char errstr[128];
snprintf(ffmpeg->oc->filename, sizeof(ffmpeg->oc->filename), "%s", ffmpeg->filename);
/* Open the output file, if needed. */
if ((ffmpeg_timelapse_exists(ffmpeg->filename) == 0) || (ffmpeg->tlapse != TIMELAPSE_APPEND)) {
if (!(ffmpeg->oc->oformat->flags & AVFMT_NOFILE)) {
if (avio_open(&ffmpeg->oc->pb, ffmpeg->filename, MY_FLAG_WRITE) < 0) {
if (errno == ENOENT) {
if (create_path(ffmpeg->filename) == -1) {
ffmpeg_free_context(ffmpeg);
return -1;
}
if (avio_open(&ffmpeg->oc->pb, ffmpeg->filename, MY_FLAG_WRITE) < 0) {
MOTION_LOG(ERR, TYPE_ENCODER, SHOW_ERRNO, "error opening file %s", ffmpeg->filename);
ffmpeg_free_context(ffmpeg);
return -1;
}
/* Permission denied */
} else if (errno == EACCES) {
MOTION_LOG(ERR, TYPE_ENCODER, SHOW_ERRNO, "Permission denied. %s",ffmpeg->filename);
ffmpeg_free_context(ffmpeg);
return -1;
} else {
MOTION_LOG(ERR, TYPE_ENCODER, SHOW_ERRNO, "Error opening file %s", ffmpeg->filename);
ffmpeg_free_context(ffmpeg);
return -1;
}
}
}
/* Write the stream header, For the TIMELAPSE_APPEND
* we write the data via standard file I/O so we close the
* items here
*/
retcd = avformat_write_header(ffmpeg->oc, NULL);
if (retcd < 0){
av_strerror(retcd, errstr, sizeof(errstr));
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Could not write ffmpeg header %s",errstr);
ffmpeg_free_context(ffmpeg);
return -1;
}
if (ffmpeg->tlapse == TIMELAPSE_APPEND) {
av_write_trailer(ffmpeg->oc);
avio_close(ffmpeg->oc->pb);
}
}
return 0;
}
static int ffmpeg_flush_codec(struct ffmpeg *ffmpeg){
#if (LIBAVFORMAT_VERSION_MAJOR >= 58) || ((LIBAVFORMAT_VERSION_MAJOR == 57) && (LIBAVFORMAT_VERSION_MINOR >= 41))
//ffmpeg version 3.1 and after
int retcd;
int recv_cd = 0;
char errstr[128];
retcd = 0;
recv_cd = 0;
if (ffmpeg->tlapse == TIMELAPSE_NONE) {
retcd = avcodec_send_frame(ffmpeg->ctx_codec, NULL);
if (retcd < 0 ){
av_strerror(retcd, errstr, sizeof(errstr));
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Error entering draining mode:%s",errstr);
return -1;
}
while (recv_cd != AVERROR_EOF){
av_init_packet(&ffmpeg->pkt);
ffmpeg->pkt.data = NULL;
ffmpeg->pkt.size = 0;
recv_cd = avcodec_receive_packet(ffmpeg->ctx_codec, &ffmpeg->pkt);
if (recv_cd != AVERROR_EOF){
if (recv_cd < 0){
av_strerror(recv_cd, errstr, sizeof(errstr));
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Error draining codec:%s",errstr);
my_packet_unref(ffmpeg->pkt);
return -1;
}
retcd = av_write_frame(ffmpeg->oc, &ffmpeg->pkt);
if (retcd < 0) {
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Error writing draining video frame");
return -1;
}
}
my_packet_unref(ffmpeg->pkt);
}
}
return 0;
#else
/* Dummy to kill warnings. No draining in older ffmpeg versions */
if (ffmpeg) {
return 0;
} else{
return 0;
}
#endif
}
static int ffmpeg_put_frame(struct ffmpeg *ffmpeg, const struct timeval *tv1){
int retcd;
av_init_packet(&ffmpeg->pkt);
ffmpeg->pkt.data = NULL;
ffmpeg->pkt.size = 0;
retcd = ffmpeg_set_pts(ffmpeg, tv1);
if (retcd < 0) {
//If there is an error, it has already been reported.
my_packet_unref(ffmpeg->pkt);
return 0;
}
retcd = ffmpeg_encode_video(ffmpeg);
if (retcd != 0){
if (retcd != -2) MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Error while encoding picture");
my_packet_unref(ffmpeg->pkt);
return retcd;
}
if (ffmpeg->tlapse == TIMELAPSE_APPEND) {
retcd = ffmpeg_timelapse_append(ffmpeg, ffmpeg->pkt);
} else {
retcd = av_write_frame(ffmpeg->oc, &ffmpeg->pkt);
}
my_packet_unref(ffmpeg->pkt);
if (retcd < 0) {
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Error while writing video frame");
return -1;
}
return retcd;
}
static int ffmpeg_put_passthrough(struct ffmpeg *ffmpeg, const struct timeval *tv1, struct image_data *img_data){
int retcd;
char errstr[128];
av_init_packet(&ffmpeg->pkt);
ffmpeg->pkt.data = NULL;
ffmpeg->pkt.size = 0;
if (ffmpeg->high_resolution){
retcd = my_copy_packet(&ffmpeg->pkt, &img_data->packet_high);
} else {
retcd = my_copy_packet(&ffmpeg->pkt, &img_data->packet_norm);
}
if (retcd < 0) {
av_strerror(retcd, errstr, sizeof(errstr));
MOTION_LOG(INF, TYPE_NETCAM, NO_ERRNO, "av_copy_packet: %s",errstr);
my_packet_unref(img_data->packet_norm);
}
retcd = ffmpeg_set_pktpts(ffmpeg, tv1);
if (retcd < 0) {
//If there is an error, it has already been reported.
my_packet_unref(ffmpeg->pkt);
return 0;
}
retcd = av_write_frame(ffmpeg->oc, &ffmpeg->pkt);
my_packet_unref(ffmpeg->pkt);
if (retcd < 0) {
av_strerror(retcd, errstr, sizeof(errstr));
MOTION_LOG(ERR, TYPE_ENCODER, NO_ERRNO, "Error while writing video frame: %s",errstr);
return -1;
}
return retcd;
}
void ffmpeg_avcodec_log(void *ignoreme ATTRIBUTE_UNUSED, int errno_flag ATTRIBUTE_UNUSED, const char *fmt, va_list vl){
char buf[1024];
char *end;
/* Valgrind occasionally reports use of uninitialized values in here when we interrupt
* some rtsp functions. The offending value is either fmt or vl and seems to be from a
* debug level of av functions. To address it we flatten the message after we know
* the log level. Now we put the avcodec messages to INF level since their error
* are not necessarily our errors.
*/
if (errno_flag <= AV_LOG_WARNING){
/* Flatten the message coming in from avcodec. */
vsnprintf(buf, sizeof(buf), fmt, vl);
end = buf + strlen(buf);
if (end > buf && end[-1] == '\n')
{
*--end = 0;
}
MOTION_LOG(INF, TYPE_ENCODER, NO_ERRNO, "%s", buf);
}
}
#endif /* HAVE_FFMPEG */
/****************************************************************************
****************************************************************************
****************************************************************************/
void ffmpeg_global_init(void){
#ifdef HAVE_FFMPEG
int ret;
MOTION_LOG(NTC, TYPE_ENCODER, NO_ERRNO,
"ffmpeg libavcodec version %d.%d.%d"
" libavformat version %d.%d.%d"
, LIBAVCODEC_VERSION_MAJOR, LIBAVCODEC_VERSION_MINOR, LIBAVCODEC_VERSION_MICRO
, LIBAVFORMAT_VERSION_MAJOR, LIBAVFORMAT_VERSION_MINOR, LIBAVFORMAT_VERSION_MICRO);
av_register_all();
avcodec_register_all();
avformat_network_init();
avdevice_register_all();
av_log_set_callback((void *)ffmpeg_avcodec_log);
ret = av_lockmgr_register(ffmpeg_lockmgr_cb);
if (ret < 0)
{
MOTION_LOG(EMG, TYPE_ALL, SHOW_ERRNO, "av_lockmgr_register failed (%d)", ret);
exit(1);
}
#else /* No FFMPEG */
MOTION_LOG(NTC, TYPE_ENCODER, NO_ERRNO, "No ffmpeg functionality included");
#endif /* HAVE_FFMPEG */
}
void ffmpeg_global_deinit(void) {
#ifdef HAVE_FFMPEG
avformat_network_deinit();
if (av_lockmgr_register(NULL) < 0)
{
MOTION_LOG(EMG, TYPE_ALL, SHOW_ERRNO, "av_lockmgr_register reset failed on cleanup");
}
#else /* No FFMPEG */