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zoneminder/src/zm_videostore.cpp

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// ZoneMinder Video Storage Implementation
// Written by Chris Wiggins
// http://chriswiggins.co.nz
// Modification by Steve Gilvarry
//
// This program 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.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
#define __STDC_FORMAT_MACROS 1
#include <cinttypes>
#include <stdlib.h>
#include <string.h>
#include "zm.h"
#include "zm_videostore.h"
extern "C" {
#include "libavutil/time.h"
}
VideoStore::VideoStore(const char *filename_in, const char *format_in,
AVStream *p_video_in_stream,
AVStream *p_audio_in_stream, int64_t nStartTime,
Monitor *monitor) {
video_in_stream = p_video_in_stream;
audio_in_stream = p_audio_in_stream;
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
video_in_ctx = avcodec_alloc_context3(NULL);
avcodec_parameters_to_context(video_in_ctx,
video_in_stream->codecpar);
// zm_dump_codecpar( video_in_stream->codecpar );
#else
video_in_ctx = video_in_stream->codec;
#endif
// store ins in variables local to class
filename = filename_in;
format = format_in;
Info("Opening video storage stream %s format: %s", filename, format);
ret = avformat_alloc_output_context2(&oc, NULL, NULL, filename);
if (ret < 0) {
Warning(
"Could not create video storage stream %s as no out ctx"
" could be assigned based on filename: %s",
filename, av_make_error_string(ret).c_str());
} else {
Debug(4, "Success allocating out format ctx");
}
// Couldn't deduce format from filename, trying from format name
if ( !oc ) {
avformat_alloc_output_context2(&oc, NULL, format, filename);
if (!oc) {
Error(
"Could not create video storage stream %s as no out ctx"
" could not be assigned based on filename or format %s",
filename, format);
return;
} else {
Debug(4, "Success alocateing out ctx");
}
} // end if ! oc
AVDictionary *pmetadata = NULL;
int dsr =
av_dict_set(&pmetadata, "title", "Zoneminder Security Recording", 0);
if (dsr < 0) Warning("%s:%d: title set failed", __FILE__, __LINE__);
oc->metadata = pmetadata;
out_format = oc->oformat;
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
// Since we are not re-encoding, all we have to do is copy the parameters
video_out_ctx = avcodec_alloc_context3(NULL);
// Copy params from instream to ctx
ret = avcodec_parameters_to_context(video_out_ctx,
video_in_stream->codecpar);
if (ret < 0) {
Error("Could not initialize ctx parameteres");
return;
} else {
zm_dump_codec(video_out_ctx);
}
video_out_stream = avformat_new_stream(oc, NULL);
if (!video_out_stream) {
Error("Unable to create video out stream\n");
return;
} else {
Debug(2, "Success creating video out stream");
}
if ( !video_out_ctx->codec_tag ) {
video_out_ctx->codec_tag =
av_codec_get_tag(oc->oformat->codec_tag, video_in_ctx->codec_id);
Debug(2, "No codec_tag, setting to %d", video_out_ctx->codec_tag);
}
// Now copy them to the out stream
ret = avcodec_parameters_from_context(video_out_stream->codecpar,
video_out_ctx);
if (ret < 0) {
Error("Could not initialize stream parameteres");
return;
} else {
Debug(2, "Success setting parameters");
}
zm_dump_codecpar(video_out_stream->codecpar);
#else
video_out_stream =
avformat_new_stream(oc, NULL);
//(AVCodec *)(video_in_ctx->codec));
//avformat_new_stream(oc,(const AVCodec *)(video_in_ctx->codec));
if ( !video_out_stream ) {
Fatal("Unable to create video out stream\n");
} else {
Debug(2, "Success creating video out stream");
}
video_out_ctx = video_out_stream->codec;
ret = avcodec_copy_context(video_out_ctx, video_in_ctx);
if (ret < 0) {
Fatal("Unable to copy in video ctx to out video ctx %s\n",
av_make_error_string(ret).c_str());
} else {
Debug(3, "Success copying ctx");
}
if (!video_out_ctx->codec_tag) {
Debug(2, "No codec_tag");
if (!oc->oformat->codec_tag ||
av_codec_get_id(oc->oformat->codec_tag,
video_in_ctx->codec_tag) ==
video_out_ctx->codec_id ||
av_codec_get_tag(oc->oformat->codec_tag,
video_in_ctx->codec_id) <= 0) {
Warning("Setting codec tag");
video_out_ctx->codec_tag = video_in_ctx->codec_tag;
}
}
#endif
// Just copy them from the in, no reason to choose different
video_out_ctx->time_base = video_in_ctx->time_base;
if ( ! (video_out_ctx->time_base.num && video_out_ctx->time_base.den) ) {
video_out_ctx->time_base = AV_TIME_BASE_Q;
}
video_out_stream->time_base = video_in_stream->time_base;
Debug(3,
"Time bases: VIDEO in stream (%d/%d) in codec: (%d/%d) out "
"stream: (%d/%d) out codec (%d/%d)",
video_in_stream->time_base.num, video_in_stream->time_base.den,
video_in_ctx->time_base.num, video_in_ctx->time_base.den,
video_out_stream->time_base.num, video_out_stream->time_base.den,
video_out_ctx->time_base.num,
video_out_ctx->time_base.den);
if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
#if LIBAVCODEC_VERSION_CHECK(56, 35, 0, 64, 0)
video_out_ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
#else
video_out_ctx->flags |= CODEC_FLAG_GLOBAL_HEADER;
#endif
}
Monitor::Orientation orientation = monitor->getOrientation();
if (orientation) {
if (orientation == Monitor::ROTATE_0) {
} else if (orientation == Monitor::ROTATE_90) {
dsr = av_dict_set(&video_out_stream->metadata, "rotate", "90", 0);
if (dsr < 0) Warning("%s:%d: title set failed", __FILE__, __LINE__);
} else if (orientation == Monitor::ROTATE_180) {
dsr = av_dict_set(&video_out_stream->metadata, "rotate", "180", 0);
if (dsr < 0) Warning("%s:%d: title set failed", __FILE__, __LINE__);
} else if (orientation == Monitor::ROTATE_270) {
dsr = av_dict_set(&video_out_stream->metadata, "rotate", "270", 0);
if (dsr < 0) Warning("%s:%d: title set failed", __FILE__, __LINE__);
} else {
Warning("Unsupported Orientation(%d)", orientation);
}
}
converted_in_samples = NULL;
audio_out_codec = NULL;
audio_in_codec = NULL;
audio_in_ctx = NULL;
audio_out_stream = NULL;
in_frame = NULL;
out_frame = NULL;
#if defined(HAVE_LIBSWRESAMPLE) || defined(HAVE_LIBAVRESAMPLE)
resample_ctx = NULL;
#endif
if (audio_in_stream) {
Debug(3, "Have audio stream");
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
audio_in_ctx = avcodec_alloc_context3(NULL);
ret = avcodec_parameters_to_context(audio_in_ctx,
audio_in_stream->codecpar);
#else
audio_in_ctx = audio_in_stream->codec;
#endif
if ( audio_in_ctx->codec_id != AV_CODEC_ID_AAC ) {
static char error_buffer[256];
avcodec_string(error_buffer, sizeof(error_buffer), audio_in_ctx, 0);
Debug(2, "Got something other than AAC (%s)", error_buffer);
if (!setup_resampler()) {
return;
}
} else {
Debug(3, "Got AAC");
audio_out_stream =
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
avformat_new_stream(oc, (const AVCodec *)(audio_in_ctx->codec));
#else
avformat_new_stream(oc, (AVCodec *)audio_in_ctx->codec);
#endif
if ( !audio_out_stream ) {
Error("Unable to create audio out stream");
audio_out_stream = NULL;
} else {
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
audio_out_ctx = avcodec_alloc_context3(audio_out_codec);
// Copy params from instream to ctx
ret = avcodec_parameters_to_context(audio_out_ctx,
audio_in_stream->codecpar);
if ( ret < 0 ) {
Error("Unable to copy audio params to ctx %s",
av_make_error_string(ret).c_str());
}
ret = avcodec_parameters_from_context(audio_out_stream->codecpar,
audio_out_ctx);
if ( ret < 0 ) {
Error("Unable to copy audio params to stream %s",
av_make_error_string(ret).c_str());
}
if ( !audio_out_ctx->codec_tag ) {
audio_out_ctx->codec_tag = av_codec_get_tag(
oc->oformat->codec_tag, audio_in_ctx->codec_id);
Debug(2, "Setting audio codec tag to %d",
audio_out_ctx->codec_tag);
}
#else
audio_out_ctx = audio_out_stream->codec;
ret = avcodec_copy_context(audio_out_ctx, audio_in_ctx);
audio_out_ctx->codec_tag = 0;
#endif
if ( ret < 0 ) {
Error("Unable to copy audio ctx %s",
av_make_error_string(ret).c_str());
audio_out_stream = NULL;
} else {
if ( audio_out_ctx->channels > 1 ) {
Warning("Audio isn't mono, changing it.");
audio_out_ctx->channels = 1;
} else {
Debug(3, "Audio is mono");
}
}
} // end if audio_out_stream
} // end if is AAC
if ( audio_out_stream ) {
if ( oc->oformat->flags & AVFMT_GLOBALHEADER ) {
#if LIBAVCODEC_VERSION_CHECK(56, 35, 0, 64, 0)
audio_out_ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
#else
audio_out_ctx->flags |= CODEC_FLAG_GLOBAL_HEADER;
#endif
}
}
} // end if audio_in_stream
video_last_pts = 0;
video_last_dts = 0;
audio_last_pts = 0;
audio_last_dts = 0;
video_next_pts = 0;
video_next_dts = 0;
audio_next_pts = 0;
audio_next_dts = 0;
} // VideoStore::VideoStore
bool VideoStore::open() {
/* open the out file, if needed */
if ( !(out_format->flags & AVFMT_NOFILE) ) {
ret = avio_open2(&oc->pb, filename, AVIO_FLAG_WRITE, NULL, NULL);
if ( ret < 0 ) {
Error("Could not open out file '%s': %s\n", filename,
av_make_error_string(ret).c_str());
return false;
}
}
// os->ctx_inited = 1;
// avio_flush(ctx->pb);
// av_dict_free(&opts);
zm_dump_stream_format(oc, 0, 0, 1);
if (audio_out_stream) zm_dump_stream_format(oc, 1, 0, 1);
AVDictionary *opts = NULL;
// av_dict_set(&opts, "movflags", "frag_custom+dash+delay_moov", 0);
// av_dict_set(&opts, "movflags", "frag_custom+dash+delay_moov", 0);
// av_dict_set(&opts, "movflags",
// "frag_keyframe+empty_moov+default_base_moof", 0);
if ((ret = avformat_write_header(oc, &opts)) < 0) {
// if ((ret = avformat_write_header(oc, &opts)) < 0) {
Warning("Unable to set movflags to frag_custom+dash+delay_moov");
/* Write the stream header, if any. */
ret = avformat_write_header(oc, NULL);
} else if (av_dict_count(opts) != 0) {
Warning("some options not set\n");
}
if ( opts ) av_dict_free(&opts);
if ( ret < 0 ) {
Error("Error occurred when writing out file header to %s: %s",
filename, av_make_error_string(ret).c_str());
/* free the stream */
avio_closep(&oc->pb);
//avformat_free_context(oc);
return false;
}
return true;
} // end VideoStore::open()
VideoStore::~VideoStore() {
if ( oc->pb ) {
if (audio_out_codec) {
// The codec queues data. We need to send a flush command and out
// whatever we get. Failures are not fatal.
AVPacket pkt;
// Without these we seg fault I don't know why.
pkt.data = NULL;
pkt.size = 0;
av_init_packet(&pkt);
while (1) {
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
// Put encoder into flushing mode
avcodec_send_frame(audio_out_ctx, NULL);
ret = avcodec_receive_packet(audio_out_ctx, &pkt);
if ( ret < 0 ) {
if ( AVERROR_EOF != ret ) {
Error("ERror encoding audio while flushing (%d) (%s)", ret,
av_err2str(ret));
}
break;
}
#else
int got_packet = 0;
ret =
avcodec_encode_audio2(audio_out_ctx, &pkt, NULL, &got_packet);
if ( ret < 0 ) {
Error("ERror encoding audio while flushing (%d) (%s)", ret,
av_err2str(ret));
break;
}
Debug(1, "Have audio encoder, need to flush it's out");
if ( !got_packet ) {
break;
}
#endif
Debug(2, "writing flushed packet pts(%d) dts(%d) duration(%d)", pkt.pts,
pkt.dts, pkt.duration);
pkt.pts = audio_next_pts;
pkt.dts = audio_next_dts;
if ( pkt.duration > 0 )
pkt.duration =
av_rescale_q(pkt.duration, audio_out_ctx->time_base,
audio_out_stream->time_base);
audio_next_pts += pkt.duration;
audio_next_dts += pkt.duration;
Debug(2, "writing flushed packet pts(%d) dts(%d) duration(%d)", pkt.pts,
pkt.dts, pkt.duration);
pkt.stream_index = audio_out_stream->index;
av_interleaved_write_frame(oc, &pkt);
zm_av_packet_unref(&pkt);
} // while have buffered frames
} // end if audio_out_codec
// Flush Queues
Debug(1,"Flushing interleaved queues");
av_interleaved_write_frame(oc, NULL);
Debug(1,"Writing trailer");
/* Write the trailer before close */
if (int rc = av_write_trailer(oc)) {
Error("Error writing trailer %s", av_err2str(rc));
} else {
Debug(3, "Success Writing trailer");
}
// When will we not be using a file ?
if ( !(out_format->flags & AVFMT_NOFILE) ) {
/* Close the out file. */
Debug(2, "Closing");
if (int rc = avio_close(oc->pb)) {
oc->pb = NULL;
Error("Error closing avio %s", av_err2str(rc));
}
} else {
Debug(3, "Not closing avio because we are not writing to a file.");
}
} // end if ( oc->pb )
// I wonder if we should be closing the file first.
// I also wonder if we really need to be doing all the ctx
// allocation/de-allocation constantly, or whether we can just re-use it.
// Just do a file open/close/writeheader/etc.
// What if we were only doing audio recording?
if ( video_out_stream ) {
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
// We allocate and copy in newer ffmpeg, so need to free it
avcodec_free_context(&video_in_ctx);
#endif
video_in_ctx = NULL;
avcodec_close(video_out_ctx);
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
avcodec_free_context(&video_out_ctx);
#endif
video_out_ctx = NULL;
Debug(4, "Success freeing video_out_ctx");
}
if ( audio_out_stream ) {
if ( audio_in_codec ) {
avcodec_close(audio_in_ctx);
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
// We allocate and copy in newer ffmpeg, so need to free it
avcodec_free_context(&audio_in_ctx);
#endif
audio_in_ctx = NULL;
audio_in_codec = NULL;
} // end if audio_in_codec
avcodec_close(audio_out_ctx);
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
avcodec_free_context(&audio_out_ctx);
#endif
audio_out_ctx = NULL;
#if defined(HAVE_LIBAVRESAMPLE) || defined(HAVE_LIBSWRESAMPLE)
if ( resample_ctx ) {
#if defined(HAVE_LIBSWRESAMPLE)
swr_free(&resample_ctx);
#else
#if defined(HAVE_LIBAVRESAMPLE)
avresample_close(resample_ctx);
avresample_free(&resample_ctx);
#endif
#endif
}
if ( in_frame ) {
av_frame_free(&in_frame);
in_frame = NULL;
}
if ( out_frame ) {
av_frame_free(&out_frame);
out_frame = NULL;
}
if ( converted_in_samples ) {
av_free(converted_in_samples);
converted_in_samples = NULL;
}
#endif
}
/* free the stream */
avformat_free_context(oc);
} // VideoStore::~VideoStore()
bool VideoStore::setup_resampler() {
#if !defined(HAVE_LIBSWRESAMPLE) && !defined(HAVE_LIBAVRESAMPLE)
Error(
"Not built with resample library. "
"Cannot do audio conversion to AAC");
return false;
#else
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
// Newer ffmpeg wants to keep everything separate... so have to lookup our own
// decoder, can't reuse the one from the camera.
audio_in_codec =
avcodec_find_decoder(audio_in_stream->codecpar->codec_id);
#else
audio_in_codec = avcodec_find_decoder(audio_in_ctx->codec_id);
#endif
ret = avcodec_open2(audio_in_ctx, audio_in_codec, NULL);
if ( ret < 0 ) {
Error("Can't open in codec!");
return false;
}
audio_out_codec = avcodec_find_encoder(AV_CODEC_ID_AAC);
if ( !audio_out_codec ) {
Error("Could not find codec for AAC");
return false;
}
Debug(2, "Have audio out codec");
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
// audio_out_ctx = audio_out_stream->codec;
audio_out_ctx = avcodec_alloc_context3(audio_out_codec);
if ( !audio_out_ctx ) {
Error("could not allocate codec ctx for AAC");
audio_out_stream = NULL;
return false;
}
Debug(2, "Have audio_out_ctx");
// Now copy them to the out stream
audio_out_stream = avformat_new_stream(oc, audio_out_codec);
#else
audio_out_stream = avformat_new_stream(oc, NULL);
audio_out_ctx = audio_out_stream->codec;
#endif
// Some formats (i.e. WAV) do not produce the proper channel layout
if ( audio_in_ctx->channel_layout == 0 )
audio_in_ctx->channel_layout = av_get_channel_layout("mono");
/* put sample parameters */
audio_out_ctx->bit_rate = audio_in_ctx->bit_rate <= 96000 ? audio_in_ctx->bit_rate : 96000;
audio_out_ctx->sample_rate = audio_in_ctx->sample_rate;
audio_out_ctx->channels = audio_in_ctx->channels;
audio_out_ctx->channel_layout = audio_in_ctx->channel_layout;
audio_out_ctx->sample_fmt = audio_in_ctx->sample_fmt;
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
#else
audio_out_ctx->refcounted_frames = 1;
#endif
if ( ! audio_out_ctx->channel_layout ) {
Debug(3, "Correcting channel layout from (%d) to (%d)",
audio_out_ctx->channel_layout,
av_get_default_channel_layout(audio_out_ctx->channels)
);
audio_out_ctx->channel_layout = av_get_default_channel_layout(audio_out_ctx->channels);
}
if ( audio_out_codec->supported_samplerates ) {
int found = 0;
for ( unsigned int i = 0; audio_out_codec->supported_samplerates[i]; i++) {
if ( audio_out_ctx->sample_rate ==
audio_out_codec->supported_samplerates[i] ) {
found = 1;
break;
}
}
if ( found ) {
Debug(3, "Sample rate is good");
} else {
audio_out_ctx->sample_rate =
audio_out_codec->supported_samplerates[0];
Debug(1, "Sample rate is no good, setting to (%d)",
audio_out_codec->supported_samplerates[0]);
}
}
/* check that the encoder supports s16 pcm in */
if ( !check_sample_fmt(audio_out_codec, audio_out_ctx->sample_fmt) ) {
Debug(3, "Encoder does not support sample format %s, setting to FLTP",
av_get_sample_fmt_name(audio_out_ctx->sample_fmt));
audio_out_ctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
}
audio_out_ctx->time_base =
(AVRational){1, audio_out_ctx->sample_rate};
AVDictionary *opts = NULL;
if ( (ret = av_dict_set(&opts, "strict", "experimental", 0)) < 0 ) {
Error("Couldn't set experimental");
}
ret = avcodec_open2(audio_out_ctx, audio_out_codec, &opts);
av_dict_free(&opts);
if ( ret < 0 ) {
Error("could not open codec (%d) (%s)\n", ret, av_make_error_string(ret).c_str());
audio_out_codec = NULL;
audio_out_ctx = NULL;
audio_out_stream = NULL;
return false;
}
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
ret = avcodec_parameters_from_context(
audio_out_stream->codecpar, audio_out_ctx);
if ( ret < 0 ) {
Error("Could not initialize stream parameteres");
return false;
}
#endif
Debug(1,
"Audio out bit_rate (%d) sample_rate(%d) channels(%d) fmt(%d) "
"layout(%d) frame_size(%d)",
audio_out_ctx->bit_rate, audio_out_ctx->sample_rate,
audio_out_ctx->channels, audio_out_ctx->sample_fmt,
audio_out_ctx->channel_layout, audio_out_ctx->frame_size);
/** Create a new frame to store the audio samples. */
if ( !(in_frame = zm_av_frame_alloc()) ) {
Error("Could not allocate in frame");
return false;
}
/** Create a new frame to store the audio samples. */
if ( !(out_frame = zm_av_frame_alloc()) ) {
Error("Could not allocate out frame");
av_frame_free(&in_frame);
return false;
}
#if defined(HAVE_LIBSWRESAMPLE)
resample_ctx = swr_alloc_set_opts(NULL,
av_get_default_channel_layout(audio_out_ctx->channels),
audio_out_ctx->sample_fmt,
audio_out_ctx->sample_rate,
av_get_default_channel_layout(audio_in_ctx->channels),
audio_in_ctx->sample_fmt,
audio_in_ctx->sample_rate,
0, NULL);
if ( !resample_ctx ) {
Error("Could not allocate resample context");
av_frame_free(&in_frame);
av_frame_free(&out_frame);
return false;
}
if ( (ret = swr_init(resample_ctx)) < 0 ) {
Error("Could not open resampler");
av_frame_free(&in_frame);
av_frame_free(&out_frame);
swr_free(&resample_ctx);
return false;
}
#else
#if defined(HAVE_LIBAVRESAMPLE)
// Setup the audio resampler
resample_ctx = avresample_alloc_context();
if ( !resample_ctx ) {
Error("Could not allocate resample ctx");
av_frame_free(&in_frame);
av_frame_free(&out_frame);
return false;
}
av_opt_set_int(resample_ctx, "in_channel_layout",
audio_in_ctx->channel_layout, 0);
av_opt_set_int(resample_ctx, "in_sample_fmt",
audio_in_ctx->sample_fmt, 0);
av_opt_set_int(resample_ctx, "in_sample_rate",
audio_in_ctx->sample_rate, 0);
av_opt_set_int(resample_ctx, "in_channels",
audio_in_ctx->channels, 0);
av_opt_set_int(resample_ctx, "out_channel_layout",
audio_in_ctx->channel_layout, 0);
av_opt_set_int(resample_ctx, "out_sample_fmt",
audio_out_ctx->sample_fmt, 0);
av_opt_set_int(resample_ctx, "out_sample_rate",
audio_out_ctx->sample_rate, 0);
av_opt_set_int(resample_ctx, "out_channels",
audio_out_ctx->channels, 0);
ret = avresample_open(resample_ctx);
if ( ret < 0 ) {
Error("Could not open resample ctx");
return false;
} else {
Debug(2, "Success opening resampler");
}
#endif
#endif
out_frame->nb_samples = audio_out_ctx->frame_size;
out_frame->format = audio_out_ctx->sample_fmt;
out_frame->channel_layout = audio_out_ctx->channel_layout;
// The codec gives us the frame size, in samples, we calculate the size of the
// samples buffer in bytes
unsigned int audioSampleBuffer_size = av_samples_get_buffer_size(
NULL, audio_out_ctx->channels,
audio_out_ctx->frame_size,
audio_out_ctx->sample_fmt, 0);
converted_in_samples = (uint8_t *)av_malloc(audioSampleBuffer_size);
if ( !converted_in_samples ) {
Error("Could not allocate converted in sample pointers");
return false;
} else {
Debug(2, "Frame Size %d, sample buffer size %d", audio_out_ctx->frame_size, audioSampleBuffer_size);
}
// Setup the data pointers in the AVFrame
if ( avcodec_fill_audio_frame(out_frame, audio_out_ctx->channels,
audio_out_ctx->sample_fmt,
(const uint8_t *)converted_in_samples,
audioSampleBuffer_size, 0) < 0) {
Error("Could not allocate converted in sample pointers");
return false;
}
return true;
#endif
} // end bool VideoStore::setup_resampler()
int VideoStore::writeVideoFramePacket(AVPacket *ipkt) {
av_init_packet(&opkt);
opkt.pts = video_next_pts;
opkt.dts = video_next_dts;
opkt.duration = 0;
int64_t duration;
if ( !video_last_pts ) {
duration = 0;
} else {
duration =
av_rescale_q(ipkt->pts - video_last_pts, video_in_stream->time_base,
video_out_stream->time_base);
Debug(1, "duration calc: pts(%" PRId64 ") - last_pts(% " PRId64 ") = (%" PRId64 ")",
ipkt->pts,
video_last_pts,
duration);
if (duration <= 0) {
duration = ipkt->duration ? ipkt->duration : av_rescale_q(1,video_in_stream->time_base, video_out_stream->time_base);
}
}
//#if ( 0 && video_last_pts && ( ipkt->duration == AV_NOPTS_VALUE || !
//ipkt->duration ) ) {
// Video packets don't really have a duration. Audio does.
// opkt.duration = av_rescale_q(duration, video_in_stream->time_base,
// video_out_stream->time_base);
// opkt.duration = 0;
//} else {
// duration = opkt.duration = av_rescale_q(ipkt->duration,
// video_in_stream->time_base, video_out_stream->time_base);
//}
video_last_pts = ipkt->pts;
video_last_dts = ipkt->dts;
#if 0
//Scale the PTS of the outgoing packet to be the correct time base
if ( ipkt->pts != AV_NOPTS_VALUE ) {
if ( ! video_last_pts ) {
// This is the first packet.
opkt.pts = 0;
Debug(2, "Starting video video_last_pts will become (%d)", ipkt->pts);
} else {
if ( ipkt->pts < video_last_pts ) {
Debug(1, "Resetting video_last_pts from (%d) to (%d)", video_last_pts, ipkt->pts);
// wrap around, need to figure out the distance FIXME having this wrong should cause a jump, but then play ok?
opkt.pts = video_next_pts + av_rescale_q( ipkt->pts, video_in_stream->time_base, video_out_stream->time_base);
} else {
opkt.pts = video_next_pts + av_rescale_q( ipkt->pts - video_last_pts, video_in_stream->time_base, video_out_stream->time_base);
}
}
Debug(3, "opkt.pts = %d from ipkt->pts(%d) - last_pts(%d)", opkt.pts, ipkt->pts, video_last_pts);
video_last_pts = ipkt->pts;
} else {
Debug(3, "opkt.pts = undef");
opkt.pts = AV_NOPTS_VALUE;
}
// Just because the in stream wraps, doesn't mean the out needs to. Really, if we are limiting ourselves to 10min segments I can't imagine every wrapping in the out. So need to handle in wrap, without causing out wrap.
if ( !video_last_dts ) {
// This is the first packet.
opkt.dts = 0;
Debug(1, "Starting video video_last_dts will become (%lu)", ipkt->dts);
video_last_dts = ipkt->dts;
} else {
// Scale the DTS of the outgoing packet to be the correct time base
if ( ipkt->dts == AV_NOPTS_VALUE ) {
// why are we using cur_dts instead of packet.dts? I think cur_dts is in AV_TIME_BASE_Q, but ipkt.dts is in video_in_stream->time_base
if ( video_in_stream->cur_dts < video_last_dts ) {
Debug(1, "Resetting video_last_dts from (%d) to (%d) p.dts was (%d)", video_last_dts, video_in_stream->cur_dts, ipkt->dts);
opkt.dts = video_next_dts + av_rescale_q(video_in_stream->cur_dts, AV_TIME_BASE_Q, video_out_stream->time_base);
} else {
opkt.dts = video_next_dts + av_rescale_q(video_in_stream->cur_dts - video_last_dts, AV_TIME_BASE_Q, video_out_stream->time_base);
}
Debug(3, "opkt.dts = %d from video_in_stream->cur_dts(%d) - previus_dts(%d)", opkt.dts, video_in_stream->cur_dts, video_last_dts);
video_last_dts = video_in_stream->cur_dts;
} else {
if ( ipkt->dts < video_last_dts ) {
Debug(1, "Resetting video_last_dts from (%d) to (%d)", video_last_dts, ipkt->dts);
opkt.dts = video_next_dts + av_rescale_q( ipkt->dts, video_in_stream->time_base, video_out_stream->time_base);
} else {
opkt.dts = video_next_dts + av_rescale_q( ipkt->dts - video_last_dts, video_in_stream->time_base, video_out_stream->time_base);
}
Debug(3, "opkt.dts = %d from ipkt.dts(%d) - previus_dts(%d)", opkt.dts, ipkt->dts, video_last_dts);
video_last_dts = ipkt->dts;
}
}
#endif
if (opkt.dts > opkt.pts) {
Debug(1,
"opkt.dts(%d) must be <= opkt.pts(%d). Decompression must happen "
"before presentation.",
opkt.dts, opkt.pts);
opkt.dts = opkt.pts;
}
opkt.flags = ipkt->flags;
opkt.pos = -1;
opkt.data = ipkt->data;
opkt.size = ipkt->size;
opkt.stream_index = video_out_stream->index;
AVPacket safepkt;
memcpy(&safepkt, &opkt, sizeof(AVPacket));
dumpPacket( &opkt, "writing video packet" );
if ((opkt.data == NULL) || (opkt.size < 1)) {
Warning("%s:%d: Mangled AVPacket: discarding frame", __FILE__, __LINE__);
dumpPacket(ipkt);
dumpPacket(&opkt);
} else if ((video_next_dts > 0) && (video_next_dts > opkt.dts)) {
Warning("%s:%d: DTS out of order: %lld \u226E %lld; discarding frame",
__FILE__, __LINE__, video_next_dts, opkt.dts);
video_next_dts = opkt.dts;
dumpPacket(&opkt);
} else {
video_next_dts = opkt.dts + duration;
video_next_pts = opkt.pts + duration;
ret = av_interleaved_write_frame(oc, &opkt);
if (ret < 0) {
// There's nothing we can really do if the frame is rejected, just drop it
// and get on with the next
Warning(
"%s:%d: Writing frame [av_interleaved_write_frame()] failed: %s(%d) "
" ",
__FILE__, __LINE__, av_make_error_string(ret).c_str(), ret);
dumpPacket(&safepkt);
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
zm_dump_codecpar(video_in_stream->codecpar);
zm_dump_codecpar(video_out_stream->codecpar);
#endif
}
}
zm_av_packet_unref(&opkt);
return 0;
} // end int VideoStore::writeVideoFramePacket( AVPacket *ipkt )
int VideoStore::writeAudioFramePacket(AVPacket *ipkt) {
Debug(4, "writeAudioFrame");
if ( !audio_out_stream ) {
Debug(1, "Called writeAudioFramePacket when no audio_out_stream");
return 0; // FIXME -ve return codes do not free packet in ffmpeg_camera at
// the moment
}
if ( audio_out_codec ) {
Debug(3, "Have audio codec");
#if defined(HAVE_LIBSWRESAMPLE) || defined(HAVE_LIBAVRESAMPLE)
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
ret = avcodec_send_packet(audio_in_ctx, ipkt);
if ( ret < 0 ) {
Error("avcodec_send_packet fail %s", av_make_error_string(ret).c_str());
return 0;
}
ret = avcodec_receive_frame(audio_in_ctx, in_frame);
if (ret < 0) {
Error("avcodec_receive_frame fail %s", av_make_error_string(ret).c_str());
return 0;
}
Debug(2,
"Input Frame: samples(%d), format(%d), sample_rate(%d), channel "
"layout(%d)",
in_frame->nb_samples, in_frame->format,
in_frame->sample_rate, in_frame->channel_layout);
#else
/**
* Decode the audio frame stored in the packet.
* The in audio stream decoder is used to do this.
* If we are at the end of the file, pass an empty packet to the decoder
* to flush it.
*/
int data_present;
if ( (ret = avcodec_decode_audio4(
audio_in_ctx, in_frame, &data_present, ipkt)) < 0 ) {
Error("Could not decode frame (error '%s')",
av_make_error_string(ret).c_str());
dumpPacket(ipkt);
av_frame_free(&in_frame);
return 0;
}
if ( !data_present ) {
Debug(2, "Not ready to transcode a frame yet.");
return 0;
}
#endif
int frame_size = out_frame->nb_samples;
// Resample the in into the audioSampleBuffer until we proceed the whole
// decoded data
Debug(2, "Converting %d to %d samples", in_frame->nb_samples, out_frame->nb_samples);
if (
#if defined(HAVE_LIBSWRESAMPLE)
(ret = swr_convert(resample_ctx,
out_frame->data, frame_size,
(const uint8_t**)in_frame->data,
in_frame->nb_samples))
#else
#if defined(HAVE_LIBAVRESAMPLE)
(ret = avresample_convert(resample_ctx, NULL, 0, 0, in_frame->data,
0, in_frame->nb_samples))
#endif
#endif
< 0) {
Error("Could not resample frame (error '%s')",
av_make_error_string(ret).c_str());
av_frame_unref(in_frame);
return 0;
}
av_frame_unref(in_frame);
#if defined(HAVE_LIBAVRESAMPLE)
int samples_available = avresample_available(resample_ctx);
if ( samples_available < frame_size ) {
Debug(1, "Not enough samples yet (%d)", samples_available);
return 0;
}
Debug(3, "Output_frame samples (%d)", out_frame->nb_samples);
// Read a frame audio data from the resample fifo
if ( avresample_read(resample_ctx, out_frame->data, frame_size) !=
frame_size) {
Warning("Error reading resampled audio:");
return 0;
}
#endif
Debug(2,
"Frame: samples(%d), format(%d), sample_rate(%d), channel layout(%d)",
out_frame->nb_samples, out_frame->format,
out_frame->sample_rate, out_frame->channel_layout);
av_init_packet(&opkt);
Debug(5, "after init packet");
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
if ( (ret = avcodec_send_frame(audio_out_ctx, out_frame)) < 0 ) {
Error("Could not send frame (error '%s')",
av_make_error_string(ret).c_str());
zm_av_packet_unref(&opkt);
return 0;
}
// av_frame_unref( out_frame );
if ( (ret = avcodec_receive_packet(audio_out_ctx, &opkt)) < 0 ) {
if ( AVERROR(EAGAIN) == ret ) {
// THe codec may need more samples than it has, perfectly valid
Debug(3, "Could not recieve packet (error '%s')",
av_make_error_string(ret).c_str());
} else {
Error("Could not recieve packet (error %d = '%s')", ret,
av_make_error_string(ret).c_str());
}
zm_av_packet_unref(&opkt);
av_frame_unref(in_frame);
// av_frame_unref( out_frame );
return 0;
}
#else
if ( (ret = avcodec_encode_audio2(audio_out_ctx, &opkt, out_frame,
&data_present)) < 0 ) {
Error("Could not encode frame (error '%s')",
av_make_error_string(ret).c_str());
zm_av_packet_unref(&opkt);
return 0;
}
if (!data_present) {
Debug(2, "Not ready to out a frame yet.");
zm_av_packet_unref(&opkt);
return 0;
}
#endif
#else
Error("Have audio codec but no resampler?!");
#endif
} else {
av_init_packet(&opkt);
Debug(5, "after init packet");
opkt.data = ipkt->data;
opkt.size = ipkt->size;
}
// PTS is difficult, because of the buffering of the audio packets in the
// resampler. So we have to do it once we actually have a packet...
// audio_last_pts is the pts of ipkt, audio_next_pts is the last pts of the
// out
// Scale the PTS of the outgoing packet to be the correct time base
#if 0
if ( ipkt->pts != AV_NOPTS_VALUE ) {
if ( !audio_last_pts ) {
opkt.pts = 0;
Debug(1, "No audio_last_pts");
} else {
if ( audio_last_pts > ipkt->pts ) {
Debug(1, "Resetting audio_start_pts from (%d) to (%d)", audio_last_pts, ipkt->pts);
opkt.pts = audio_next_pts + av_rescale_q(ipkt->pts, audio_in_stream->time_base, audio_out_stream->time_base);
} else {
opkt.pts = audio_next_pts + av_rescale_q(ipkt->pts - audio_last_pts, audio_in_stream->time_base, audio_out_stream->time_base);
}
Debug(2, "audio opkt.pts = %d from ipkt->pts(%d) - last_pts(%d)", opkt.pts, ipkt->pts, audio_last_pts);
}
audio_last_pts = ipkt->pts;
} else {
Debug(2, "opkt.pts = undef");
opkt.pts = AV_NOPTS_VALUE;
}
#else
opkt.pts = audio_next_pts;
opkt.dts = audio_next_dts;
#endif
#if 0
if ( ipkt->dts == AV_NOPTS_VALUE ) {
// So if the in has no dts assigned... still need an out dts... so we use cur_dts?
if ( audio_last_dts >= audio_in_stream->cur_dts ) {
Debug(1, "Resetting audio_last_dts from (%d) to cur_dts (%d)", audio_last_dts, audio_in_stream->cur_dts);
opkt.dts = audio_next_dts + av_rescale_q( audio_in_stream->cur_dts, AV_TIME_BASE_Q, audio_out_stream->time_base);
} else {
opkt.dts = audio_next_dts + av_rescale_q( audio_in_stream->cur_dts - audio_last_dts, AV_TIME_BASE_Q, audio_out_stream->time_base);
}
audio_last_dts = audio_in_stream->cur_dts;
Debug(2, "opkt.dts = %d from video_in_stream->cur_dts(%d) - last_dts(%d)", opkt.dts, audio_in_stream->cur_dts, audio_last_dts);
} else {
if ( audio_last_dts >= ipkt->dts ) {
Debug(1, "Resetting audio_last_dts from (%d) to (%d)", audio_last_dts, ipkt->dts );
opkt.dts = audio_next_dts + av_rescale_q(ipkt->dts, audio_in_stream->time_base, audio_out_stream->time_base);
} else {
opkt.dts = audio_next_dts + av_rescale_q(ipkt->dts - audio_last_dts, audio_in_stream->time_base, audio_out_stream->time_base);
Debug(2, "opkt.dts = %d from previous(%d) + ( ipkt->dts(%d) - last_dts(%d) )", opkt.dts, audio_next_dts, ipkt->dts, audio_last_dts );
}
}
}
#endif
// audio_last_dts = ipkt->dts;
if (opkt.dts > opkt.pts) {
Debug(1,
"opkt.dts(%d) must be <= opkt.pts(%d). Decompression must happen "
"before presentation.",
opkt.dts, opkt.pts);
opkt.dts = opkt.pts;
}
// I wonder if we could just use duration instead of all the hoop jumping
// above?
//
if (out_frame) {
opkt.duration = out_frame->nb_samples;
} else {
opkt.duration = ipkt->duration;
}
// opkt.duration = av_rescale_q(ipkt->duration, audio_in_stream->time_base,
// audio_out_stream->time_base);
Debug(2, "opkt.pts (%d), opkt.dts(%d) opkt.duration = (%d)", opkt.pts,
opkt.dts, opkt.duration);
// pkt.pos: byte position in stream, -1 if unknown
opkt.pos = -1;
opkt.stream_index = audio_out_stream->index;
audio_next_dts = opkt.dts + opkt.duration;
audio_next_pts = opkt.pts + opkt.duration;
AVPacket safepkt;
memcpy(&safepkt, &opkt, sizeof(AVPacket));
ret = av_interleaved_write_frame(oc, &opkt);
if (ret != 0) {
Error("Error writing audio frame packet: %s\n",
av_make_error_string(ret).c_str());
dumpPacket(&safepkt);
} else {
Debug(2, "Success writing audio frame");
}
zm_av_packet_unref(&opkt);
return 0;
} // end int VideoStore::writeAudioFramePacket( AVPacket *ipkt )
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