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Merge remote-tracking branch 'upstream/master' into pull_requests

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# Conflicts:
#	io/previewgenerator.cpp
#	ui/renderfunctions.cpp
This commit is contained in:
Jonathan Noble
2019-02-19 08:57:47 +00:00
parent 52c2fee142 b848116c63
commit a77901e421
1052 changed files with 114058 additions and 5446 deletions
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io/previewgenerator.cpp
+296 -208
View File
@@ -1,3 +1,23 @@
/***
Olive - Non-Linear Video Editor
Copyright (C) 2019 Olive Team
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 3 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, see <http://www.gnu.org/licenses/>.
***/
#include "previewgenerator.h"
#include "project/media.h"
@@ -13,24 +33,13 @@
#include <QtMath>
#include <QTreeWidgetItem>
#include <QSemaphore>
#include <QCryptographicHash>
#include <QFile>
#include <QDir>
#include <QDateTime>
#define WAVEFORM_RESOLUTION 64
extern "C" {
#include <libavformat/avformat.h>
#include <libavcodec/avcodec.h>
#include <libswscale/swscale.h>
#include <libswresample/swresample.h>
}
QSemaphore sem(5); // only 5 preview generators can run at one time
PreviewGenerator::PreviewGenerator(Media* i, Footage* m, bool r) :
QThread(0),
QThread(nullptr),
fmt_ctx(nullptr),
media(i),
footage(m),
@@ -50,7 +59,7 @@ PreviewGenerator::PreviewGenerator(Media* i, Footage* m, bool r) :
void PreviewGenerator::parse_media() {
// detect video/audio streams in file
for (int i=0;i<(int)fmt_ctx->nb_streams;i++) {
for (int i=0;i<int(fmt_ctx->nb_streams);i++) {
// Find the decoder for the video stream
if (avcodec_find_decoder(fmt_ctx->streams[i]->codecpar->codec_id) == nullptr) {
qCritical() << "Unsupported codec in stream" << i << "of file" << footage->name;
@@ -67,13 +76,7 @@ void PreviewGenerator::parse_media() {
&& fmt_ctx->streams[i]->codecpar->width > 0
&& fmt_ctx->streams[i]->codecpar->height > 0) {
/*dout << "avg_frame_rate was:" << fmt_ctx->streams[i]->avg_frame_rate.num << "/" << fmt_ctx->streams[i]->avg_frame_rate.den;
dout << "r_frame_rate was:" << fmt_ctx->streams[i]->r_frame_rate.num << "/" << fmt_ctx->streams[i]->r_frame_rate.den;
dout << "codec_frame_rate was:" << fmt_ctx->streams[i]->codec->framerate.num << "/" << fmt_ctx->streams[i]->codec->framerate.den;
dout << "nb_frames was:" << fmt_ctx->streams[i]->nb_frames;
dout << "duration was:" << fmt_ctx->streams[i]->duration << "OR fmt_ctx's duration is:" << fmt_ctx->duration;*/
// heuristic to determine if video is a still image
// heuristic to determine if video is a still image (if it is, we treat it differently in the playback/render process)
if (fmt_ctx->streams[i]->avg_frame_rate.den == 0
&& fmt_ctx->streams[i]->codecpar->codec_id != AV_CODEC_ID_DNXHD) { // silly hack but this is the only scenario i've seen this
if (footage->url.contains('%')) {
@@ -84,16 +87,10 @@ void PreviewGenerator::parse_media() {
contains_still_image = true;
ms.video_frame_rate = 0;
}
} else {
// using ffmpeg's built-in heuristic
ms.video_frame_rate = av_q2d(av_guess_frame_rate(fmt_ctx, fmt_ctx->streams[i], nullptr));
// old heuristic
/*if (fmt_ctx->streams[i]->r_frame_rate.den == 0) {
ms.video_frame_rate = av_q2d(fmt_ctx->streams[i]->avg_frame_rate);
} else {
ms.video_frame_rate = av_q2d(fmt_ctx->streams[i]->r_frame_rate);
}*/
}
ms.video_width = fmt_ctx->streams[i]->codecpar->width;
@@ -106,7 +103,7 @@ void PreviewGenerator::parse_media() {
append = true;
} else if (fmt_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
ms.audio_channels = fmt_ctx->streams[i]->codecpar->channels;
ms.audio_layout = fmt_ctx->streams[i]->codecpar->channel_layout;
ms.audio_layout = int(fmt_ctx->streams[i]->codecpar->channel_layout);
ms.audio_frequency = fmt_ctx->streams[i]->codecpar->sample_rate;
append = true;
@@ -223,200 +220,287 @@ void PreviewGenerator::generate_waveform() {
SwsContext* sws_ctx;
SwrContext* swr_ctx;
AVFrame* temp_frame = av_frame_alloc();
// stores codec contexts for format's streams
AVCodecContext** codec_ctx = new AVCodecContext* [fmt_ctx->nb_streams];
// stores media lengths while scanning in case the format has no duration metadata
int64_t* media_lengths = new int64_t[fmt_ctx->nb_streams]{0};
// stores samples while scanning before they get sent to preview file
qint16*** waveform_cache_data = new qint16** [fmt_ctx->nb_streams];
int waveform_cache_count = 0;
// defaults to false, sets to true if we find a valid stream to make a preview of
bool create_previews = false;
for (unsigned int i=0;i<fmt_ctx->nb_streams;i++) {
// default to nullptr values for easier memory management later
codec_ctx[i] = nullptr;
if (fmt_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO || fmt_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
waveform_cache_data[i] = nullptr;
// we only generate previews for video and audio
// and only if the thumbnail and waveform sizes are > 0
if ((fmt_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && Olive::CurrentConfig.thumbnail_resolution > 0)
|| (fmt_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && Olive::CurrentConfig.waveform_resolution > 0)) {
AVCodec* codec = avcodec_find_decoder(fmt_ctx->streams[i]->codecpar->codec_id);
if (codec != nullptr) {
// alloc the context and load the params into it
codec_ctx[i] = avcodec_alloc_context3(codec);
avcodec_parameters_to_context(codec_ctx[i], fmt_ctx->streams[i]->codecpar);
// open the decoder
avcodec_open2(codec_ctx[i], codec, nullptr);
if (fmt_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && codec_ctx[i]->channel_layout == 0) {
codec_ctx[i]->channel_layout = av_get_default_channel_layout(fmt_ctx->streams[i]->codecpar->channels);
// audio specific functions
if (fmt_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
// allocate sample cache for this stream
waveform_cache_data[i] = new qint16* [fmt_ctx->streams[i]->codecpar->channels];
// each channel gets a min and a max value so we allocate two ints for each one
for (int j=0;j<fmt_ctx->streams[i]->codecpar->channels;j++) {
waveform_cache_data[i][j] = new qint16[2];
}
// if codec context has no defined channel layout, guess it from the channel count
if (codec_ctx[i]->channel_layout == 0) {
codec_ctx[i]->channel_layout = av_get_default_channel_layout(fmt_ctx->streams[i]->codecpar->channels);
}
}
// enable next step of process
create_previews = true;
}
}
}
}
AVPacket* packet = av_packet_alloc();
bool done = true;
if (create_previews) {
// TODO may be unnecessary - doesn't av_read_frame allocate a packet itself?
AVPacket* packet = av_packet_alloc();
bool end_of_file = false;
bool done = true;
// get the ball rolling
do {
av_read_frame(fmt_ctx, packet);
} while (codec_ctx[packet->stream_index] == nullptr);
avcodec_send_packet(codec_ctx[packet->stream_index], packet);
bool end_of_file = false;
while (!end_of_file) {
while (codec_ctx[packet->stream_index] == nullptr || avcodec_receive_frame(codec_ctx[packet->stream_index], temp_frame) == AVERROR(EAGAIN)) {
av_packet_unref(packet);
int read_ret = av_read_frame(fmt_ctx, packet);
// get the ball rolling
do {
av_read_frame(fmt_ctx, packet);
} while (codec_ctx[packet->stream_index] == nullptr);
avcodec_send_packet(codec_ctx[packet->stream_index], packet);
//dout << "read frame for" << footage->name << footage->url << read_ret << "retrieve_duration:" << retrieve_duration << "eof:" << end_of_file << "packet pts:" << packet->pts;
while (!end_of_file) {
while (codec_ctx[packet->stream_index] == nullptr || avcodec_receive_frame(codec_ctx[packet->stream_index], temp_frame) == AVERROR(EAGAIN)) {
av_packet_unref(packet);
int read_ret = av_read_frame(fmt_ctx, packet);
if (read_ret < 0) {
end_of_file = true;
if (read_ret != AVERROR_EOF) qCritical() << "Failed to read packet for preview generation" << read_ret;
break;
}
if (codec_ctx[packet->stream_index] != nullptr) {
int send_ret = avcodec_send_packet(codec_ctx[packet->stream_index], packet);
if (send_ret < 0 && send_ret != AVERROR(EAGAIN)) {
qCritical() << "Failed to send packet for preview generation - aborting" << send_ret;
end_of_file = true;
break;
}
}
}
if (!end_of_file) {
FootageStream* s = footage->get_stream_from_file_index(fmt_ctx->streams[packet->stream_index]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO, packet->stream_index);
if (s != nullptr) {
if (fmt_ctx->streams[packet->stream_index]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
if (!s->preview_done) {
int dstH = 120;
int dstW = dstH * ((float)temp_frame->width/(float)temp_frame->height);
uint8_t* data = new uint8_t[dstW*dstH*4];
//dout << "read frame for" << footage->name << footage->url << read_ret << "retrieve_duration:" << retrieve_duration << "eof:" << end_of_file << "packet pts:" << packet->pts;
sws_ctx = sws_getContext(
temp_frame->width,
temp_frame->height,
static_cast<AVPixelFormat>(temp_frame->format),
dstW,
dstH,
static_cast<AVPixelFormat>(AV_PIX_FMT_RGBA),
SWS_FAST_BILINEAR,
nullptr,
nullptr,
nullptr
);
if (read_ret < 0) {
end_of_file = true;
if (read_ret != AVERROR_EOF) qCritical() << "Failed to read packet for preview generation" << read_ret;
break;
}
if (codec_ctx[packet->stream_index] != nullptr) {
int send_ret = avcodec_send_packet(codec_ctx[packet->stream_index], packet);
if (send_ret < 0 && send_ret != AVERROR(EAGAIN)) {
qCritical() << "Failed to send packet for preview generation - aborting" << send_ret;
end_of_file = true;
break;
}
}
}
if (!end_of_file) {
FootageStream* s = footage->get_stream_from_file_index(fmt_ctx->streams[packet->stream_index]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO, packet->stream_index);
if (s != nullptr) {
if (fmt_ctx->streams[packet->stream_index]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
if (!s->preview_done) {
int dstH = Olive::CurrentConfig.thumbnail_resolution;
int dstW = qRound(dstH * (float(temp_frame->width)/float(temp_frame->height)));
uint8_t* data = new uint8_t[size_t(dstW*dstH*4)];
int linesize[AV_NUM_DATA_POINTERS];
linesize[0] = dstW*4;
sws_scale(sws_ctx, temp_frame->data, temp_frame->linesize, 0, temp_frame->height, &data, linesize);
sws_ctx = sws_getContext(
temp_frame->width,
temp_frame->height,
static_cast<AVPixelFormat>(temp_frame->format),
dstW,
dstH,
static_cast<AVPixelFormat>(AV_PIX_FMT_RGBA),
SWS_FAST_BILINEAR,
nullptr,
nullptr,
nullptr
);
s->video_preview = QImage(data, dstW, dstH, linesize[0], QImage::Format_RGBA8888, thumb_data_cleanup);
s->make_square_thumb();
int linesize[AV_NUM_DATA_POINTERS];
linesize[0] = dstW*4;
sws_scale(sws_ctx, temp_frame->data, temp_frame->linesize, 0, temp_frame->height, &data, linesize);
// is video interlaced?
s->video_auto_interlacing = (temp_frame->interlaced_frame) ? ((temp_frame->top_field_first) ? VIDEO_TOP_FIELD_FIRST : VIDEO_BOTTOM_FIELD_FIRST) : VIDEO_PROGRESSIVE;
s->video_interlacing = s->video_auto_interlacing;
s->video_preview = QImage(data, dstW, dstH, linesize[0], QImage::Format_RGBA8888, thumb_data_cleanup);
s->make_square_thumb();
s->preview_done = true;
// is video interlaced?
s->video_auto_interlacing = (temp_frame->interlaced_frame) ? ((temp_frame->top_field_first) ? VIDEO_TOP_FIELD_FIRST : VIDEO_BOTTOM_FIELD_FIRST) : VIDEO_PROGRESSIVE;
s->video_interlacing = s->video_auto_interlacing;
sws_freeContext(sws_ctx);
s->preview_done = true;
if (!retrieve_duration) {
avcodec_close(codec_ctx[packet->stream_index]);
codec_ctx[packet->stream_index] = nullptr;
}
}
media_lengths[packet->stream_index]++;
} else if (fmt_ctx->streams[packet->stream_index]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
int interval = qFloor((temp_frame->sample_rate/WAVEFORM_RESOLUTION)/4)*4;
sws_freeContext(sws_ctx);
AVFrame* swr_frame = av_frame_alloc();
swr_frame->channel_layout = temp_frame->channel_layout;
swr_frame->sample_rate = temp_frame->sample_rate;
swr_frame->format = AV_SAMPLE_FMT_S16P;
if (!retrieve_duration) {
avcodec_close(codec_ctx[packet->stream_index]);
codec_ctx[packet->stream_index] = nullptr;
}
}
media_lengths[packet->stream_index]++;
} else if (fmt_ctx->streams[packet->stream_index]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
AVFrame* swr_frame = av_frame_alloc();
swr_frame->channel_layout = temp_frame->channel_layout;
swr_frame->sample_rate = temp_frame->sample_rate;
swr_frame->format = AV_SAMPLE_FMT_S16P;
swr_ctx = swr_alloc_set_opts(
nullptr,
temp_frame->channel_layout,
static_cast<AVSampleFormat>(swr_frame->format),
temp_frame->sample_rate,
temp_frame->channel_layout,
static_cast<AVSampleFormat>(temp_frame->format),
temp_frame->sample_rate,
0,
nullptr
);
swr_ctx = swr_alloc_set_opts(
nullptr,
temp_frame->channel_layout,
static_cast<AVSampleFormat>(swr_frame->format),
temp_frame->sample_rate,
temp_frame->channel_layout,
static_cast<AVSampleFormat>(temp_frame->format),
temp_frame->sample_rate,
0,
nullptr
);
swr_init(swr_ctx);
swr_init(swr_ctx);
swr_convert_frame(swr_ctx, swr_frame, temp_frame);
swr_convert_frame(swr_ctx, swr_frame, temp_frame);
// TODO implement a way to terminate this if the user suddenly closes the project while the waveform is being generated
int sample_size = av_get_bytes_per_sample(static_cast<AVSampleFormat>(swr_frame->format));
int nb_bytes = swr_frame->nb_samples * sample_size;
int byte_interval = interval * sample_size;
for (int i=0;i<nb_bytes;i+=byte_interval) {
for (int j=0;j<swr_frame->channels;j++) {
qint16 min = 0;
qint16 max = 0;
for (int k=0;k<byte_interval;k+=sample_size) {
if (i+k < nb_bytes) {
qint16 sample = ((swr_frame->data[j][i+k+1] << 8) | swr_frame->data[j][i+k]);
if (sample > max) {
max = sample;
} else if (sample < min) {
min = sample;
}
} else {
break;
}
}
s->audio_preview.append(min >> 8);
s->audio_preview.append(max >> 8);
if (cancelled) break;
}
}
// `config.waveform_resolution` determines how many samples per second are stored in waveform.
// `sample_rate` is samples per second, so `interval` is how many samples are averaged in
// each "point" of the waveform
int interval = qFloor((temp_frame->sample_rate/Olive::CurrentConfig.waveform_resolution)/4)*4;
swr_free(&swr_ctx);
av_frame_unref(swr_frame);
av_frame_free(&swr_frame);
// get the amount of bytes in an audio sample
int sample_size = av_get_bytes_per_sample(static_cast<AVSampleFormat>(swr_frame->format));
if (cancelled) {
end_of_file = true;
break;
}
}
}
// total amount of data in this frame
int nb_bytes = swr_frame->nb_samples * sample_size;
// loop through entire frame
for (int i=0;i<nb_bytes;i+=sample_size) {
// check if we've hit sample threshold
if (waveform_cache_count == interval) {
// if so, we dump our cached values into the preview and reset them
// for the next interval
for (int j=0;j<swr_frame->channels;j++) {
qint16& min = waveform_cache_data[packet->stream_index][j][0];
qint16& max = waveform_cache_data[packet->stream_index][j][1];
s->audio_preview.append(min >> 8);
s->audio_preview.append(max >> 8);
}
waveform_cache_count = 0;
}
// standard processing for each channel of information
for (int j=0;j<swr_frame->channels;j++) {
qint16& min = waveform_cache_data[packet->stream_index][j][0];
qint16& max = waveform_cache_data[packet->stream_index][j][1];
// if we're starting over, reset cache to zero
if (waveform_cache_count == 0) {
min = 0;
max = 0;
}
// store most minimum and most maximum samples of this interval
qint16 sample = qint16((swr_frame->data[j][i+1] << 8) | swr_frame->data[j][i]);
min = qMin(min, sample);
max = qMax(max, sample);
}
waveform_cache_count++;
if (cancelled) {
break;
}
}
swr_free(&swr_ctx);
av_frame_free(&swr_frame);
if (cancelled) {
end_of_file = true;
break;
}
}
}
// check if we've got all our previews
if (retrieve_duration) {
done = false;
} else if (footage->audio_tracks.size() == 0) {
done = true;
for (int i=0;i<footage->video_tracks.size();i++) {
if (!footage->video_tracks.at(i).preview_done) {
done = false;
break;
}
}
if (done) {
end_of_file = true;
break;
}
}
av_packet_unref(packet);
}
}
av_frame_free(&temp_frame);
av_packet_free(&packet);
for (unsigned int i=0;i<fmt_ctx->nb_streams;i++) {
if (waveform_cache_data[i] != nullptr) {
for (int j=0;j<codec_ctx[i]->channels;j++) {
delete [] waveform_cache_data[i][j];
}
delete [] waveform_cache_data[i];
}
if (codec_ctx[i] != nullptr) {
avcodec_close(codec_ctx[i]);
avcodec_free_context(&codec_ctx[i]);
}
}
// by this point, we'll have made all audio waveform previews
for (int i=0;i<footage->audio_tracks.size();i++) {
footage->audio_tracks[i].preview_done = true;
}
}
// check if we've got all our previews
if (retrieve_duration) {
done = false;
} else if (footage->audio_tracks.size() == 0) {
done = true;
for (int i=0;i<footage->video_tracks.size();i++) {
if (!footage->video_tracks.at(i).preview_done) {
done = false;
break;
}
}
if (done) {
end_of_file = true;
break;
}
}
av_packet_unref(packet);
}
}
for (int i=0;i<footage->audio_tracks.size();i++) {
footage->audio_tracks[i].preview_done = true;
}
av_frame_free(&temp_frame);
av_packet_free(&packet);
for (unsigned int i=0;i<fmt_ctx->nb_streams;i++) {
if (codec_ctx[i] != nullptr) {
avcodec_close(codec_ctx[i]);
avcodec_free_context(&codec_ctx[i]);
}
}
if (retrieve_duration) {
footage->length = 0;
int maximum_stream = 0;
unsigned int maximum_stream = 0;
for (unsigned int i=0;i<fmt_ctx->nb_streams;i++) {
if (media_lengths[i] > media_lengths[maximum_stream]) {
maximum_stream = i;
}
}
footage->length = (double) media_lengths[maximum_stream] / av_q2d(fmt_ctx->streams[maximum_stream]->avg_frame_rate) * AV_TIME_BASE; // TODO redo with PTS
finalize_media();
// FIXME: length is currently retrieved as a frame count rather than a timestamp
footage->length = qRound(double(media_lengths[maximum_stream]) / av_q2d(fmt_ctx->streams[maximum_stream]->avg_frame_rate) * AV_TIME_BASE);
finalize_media();
}
delete [] waveform_cache_data;
delete [] media_lengths;
delete [] codec_ctx;
}
@@ -457,30 +541,31 @@ void PreviewGenerator::run() {
parse_media();
// see if we already have data for this
QFileInfo file_info(footage->url);
QString cache_file = footage->url.mid(footage->url.lastIndexOf('/')+1) + QString::number(file_info.size()) + QString::number(file_info.lastModified().toMSecsSinceEpoch());
//dout << "using hash" << cache_file;
QString hash = QCryptographicHash::hash(cache_file.toUtf8(), QCryptographicHash::Md5).toHex();
QString hash = get_file_hash(footage->url);
if (retrieve_preview(hash)) {
sem.acquire();
generate_waveform();
if (!cancelled) {
generate_waveform();
// save preview to file
for (int i=0;i<footage->video_tracks.size();i++) {
FootageStream& ms = footage->video_tracks[i];
ms.video_preview.save(get_thumbnail_path(hash, ms), "PNG");
//dout << "saved" << ms->file_index << "thumbnail to" << get_thumbnail_path(hash, ms);
}
for (int i=0;i<footage->audio_tracks.size();i++) {
FootageStream& ms = footage->audio_tracks[i];
QFile f(get_waveform_path(hash, ms));
f.open(QFile::WriteOnly);
f.write(ms.audio_preview.constData(), ms.audio_preview.size());
f.close();
//dout << "saved" << ms->file_index << "waveform to" << get_waveform_path(hash, ms);
}
if (!cancelled) {
// save preview to file
for (int i=0;i<footage->video_tracks.size();i++) {
FootageStream& ms = footage->video_tracks[i];
ms.video_preview.save(get_thumbnail_path(hash, ms), "PNG");
//dout << "saved" << ms->file_index << "thumbnail to" << get_thumbnail_path(hash, ms);
}
for (int i=0;i<footage->audio_tracks.size();i++) {
FootageStream& ms = footage->audio_tracks[i];
QFile f(get_waveform_path(hash, ms));
f.open(QFile::WriteOnly);
f.write(ms.audio_preview.constData(), ms.audio_preview.size());
f.close();
//dout << "saved" << ms->file_index << "waveform to" << get_waveform_path(hash, ms);
}
}
}
sem.release();
}
@@ -488,14 +573,16 @@ void PreviewGenerator::run() {
avformat_close_input(&fmt_ctx);
}
if (error) {
media->update_tooltip(errorStr);
emit set_icon(ICON_TYPE_ERROR, replace);
footage->invalid = true;
footage->ready_lock.unlock();
} else {
media->update_tooltip();
}
if (!cancelled) {
if (error) {
media->update_tooltip(errorStr);
emit set_icon(ICON_TYPE_ERROR, replace);
footage->invalid = true;
footage->ready_lock.unlock();
} else {
media->update_tooltip();
}
}
delete [] filename;
footage->preview_gen = nullptr;
@@ -503,4 +590,5 @@ void PreviewGenerator::run() {
void PreviewGenerator::cancel() {
cancelled = true;
wait();
}