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2b80be107197841e72d51d85d82dc0dec31e173a
UltraGrid/src/video_compress/libavcodec.cpp
Martin Pulec 2b80be1071 Libavcodec: suppress warnings
2019-10-10 09:20:39 +02:00

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/**
* @file video_compress/libavcodec.cpp
* @author Martin Pulec <pulec@cesnet.cz>
*/
/*
* Copyright (c) 2013-2019 CESNET, z. s. p. o.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, is permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of CESNET nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define __STDC_CONSTANT_MACROS
#ifdef HAVE_CONFIG_H
#include "config.h"
#include "config_unix.h"
#include "config_win32.h"
#endif // HAVE_CONFIG_H
#include "libavcodec_common.h"
#include <cassert>
#include <cmath>
#include <list>
#include <map>
#include <regex>
#include <string>
#include <thread>
#include <unordered_map>
#include "debug.h"
#include "host.h"
#include "lib_common.h"
#include "messaging.h"
#include "module.h"
#include "rang.hpp"
#include "utils/misc.h"
#include "utils/resource_manager.h"
#include "utils/worker.h"
#include "video.h"
#include "video_compress.h"
#ifdef HWACC_VAAPI
extern "C"
{
#include <libavutil/hwcontext.h>
#include <libavutil/hwcontext_vaapi.h>
#include <libavcodec/vaapi.h>
}
#include "hwaccel_libav_common.h"
#endif
#ifdef HAVE_SWSCALE
extern "C"{
#include <libswscale/swscale.h>
}
#endif
#define MOD_NAME "[lavc] "
using namespace std;
using namespace rang;
static constexpr const codec_t DEFAULT_CODEC = MJPG;
static constexpr double DEFAULT_X264_X265_CRF = 22.0;
static constexpr const int DEFAULT_GOP_SIZE = 20;
static constexpr const char *DEFAULT_THREAD_MODE = "slice";
namespace {
struct setparam_param {
double fps;
bool interlaced;
bool no_periodic_intra;
int cpu_count;
string thread_mode;
};
static constexpr const char *DEFAULT_NVENC_PRESET = "llhq";
static constexpr const char *DEFAULT_NVENC_RC = "cbr_hq"; // cbr_ld_hq for equally sized frames
static constexpr const char *DEFAULT_QSV_PRESET = "medium";
typedef struct {
enum AVCodecID av_codec;
const char *(*get_prefered_encoder)(bool is_rgb); ///< can be nullptr
double avg_bpp;
string (*get_preset)(string const & enc_name, int width, int height, double fps);
void (*set_param)(AVCodecContext *, struct setparam_param *);
} codec_params_t;
static void setparam_default(AVCodecContext *, struct setparam_param *);
static void setparam_jpeg(AVCodecContext *, struct setparam_param *);
static void setparam_h264_h265(AVCodecContext *, struct setparam_param *);
static void setparam_vp8_vp9(AVCodecContext *, struct setparam_param *);
static void libavcodec_check_messages(struct state_video_compress_libav *s);
static void libavcodec_compress_done(struct module *mod);
static string get_h264_h265_preset(string const & enc_name, int width, int height, double fps);
typedef void (*pixfmt_callback_t)(AVFrame *out_frame, unsigned char *in_data, int width, int height);
static pixfmt_callback_t select_pixfmt_callback(AVPixelFormat fmt, codec_t src);
static void usage(void);
static int parse_fmt(struct state_video_compress_libav *s, char *fmt);
static void cleanup(struct state_video_compress_libav *s);
static unordered_map<codec_t, codec_params_t, hash<int>> codec_params = {
{ H264, codec_params_t{
AV_CODEC_ID_H264,
[](bool is_rgb) { return is_rgb ? "libx264rgb" : "libx264"; },
0.07 * 2 /* for H.264: 1 - low motion, 2 - medium motion, 4 - high motion */
* 2, // take into consideration that our H.264 is less effective due to specific preset/tune
// note - not used for libx264, which uses CRF by default
get_h264_h265_preset,
setparam_h264_h265
}},
{ H265, codec_params_t{
AV_CODEC_ID_HEVC,
[](bool) { return "libx265"; },
0.04 * 2 * 2, // note - not used for libx265, which uses CRF by default
get_h264_h265_preset,
setparam_h264_h265
}},
{ MJPG, codec_params_t{
AV_CODEC_ID_MJPEG,
nullptr,
1.2,
nullptr,
setparam_jpeg
}},
{ J2K, codec_params_t{
AV_CODEC_ID_JPEG2000,
nullptr,
1.0,
nullptr,
setparam_default
}},
{ VP8, codec_params_t{
AV_CODEC_ID_VP8,
nullptr,
0.4,
nullptr,
setparam_vp8_vp9
}},
{ VP9, codec_params_t{
AV_CODEC_ID_VP9,
nullptr,
0.4,
nullptr,
setparam_vp8_vp9,
}},
{ HFYU, codec_params_t{
AV_CODEC_ID_HUFFYUV,
nullptr,
0,
nullptr,
setparam_default
}},
{ FFV1, codec_params_t{
AV_CODEC_ID_FFV1,
nullptr,
0,
nullptr,
setparam_default
}},
{ AV1, codec_params_t{
AV_CODEC_ID_AV1,
nullptr,
0,
nullptr,
setparam_default
}},
};
codec_t get_ug_for_av_codec(AVCodecID id) {
for (auto it = codec_params.begin(); it != codec_params.end(); ++it) {
if (it->second.av_codec == id) {
return it->first;
}
}
return VIDEO_CODEC_NONE;
}
struct state_video_compress_libav {
struct module module_data;
pthread_mutex_t *lavcd_global_lock;
struct video_desc saved_desc;
AVFrame *in_frame;
// for every core - parts of the above
AVFrame **in_frame_part;
AVCodecContext *codec_ctx;
unsigned char *decoded; ///< intermediate representation for codecs
///< that are not directly supported
codec_t decoded_codec;
decoder_t decoder;
codec_t requested_codec_id;
long long int requested_bitrate;
double requested_bpp;
double requested_crf;
int requested_cqp;
// may be 422, 420 or 0 (no subsampling explicitly requested
int requested_subsampling;
// contains format that is supplied by UG to the encoder or swscale (if used)
AVPixelFormat selected_pixfmt;
codec_t out_codec;
struct video_desc compressed_desc;
struct setparam_param params;
string backend;
int requested_gop;
map<string, string> lavc_opts; ///< user-supplied options from command-line
bool hwenc;
AVFrame *hwframe;
#ifdef HAVE_SWSCALE
struct SwsContext *sws_ctx;
// contains format that is supplied to the encoder
AVPixelFormat out_pixfmt;
AVFrame *sws_frame;
#endif
};
static void print_codec_info(AVCodecID id, char *buf, size_t buflen)
{
#if LIBAVCODEC_VERSION_INT > AV_VERSION_INT(58, 9, 100)
assert(buflen > 0);
buf[0] = '\0';
const AVCodec *codec = nullptr;
void *i = 0;
char *enc = (char *) alloca(buflen);
char *dec = (char *) alloca(buflen);
dec[0] = enc[0] = '\0';
while ((codec = av_codec_iterate(&i))) {
if (av_codec_is_encoder(codec) && codec->id == id) {
strncat(enc, " ", buflen - strlen(enc) - 1);
strncat(enc, codec->name, buflen - strlen(enc) - 1);
}
if (av_codec_is_decoder(codec) && codec->id == id) {
strncat(dec, " ", buflen - strlen(dec) - 1);
strncat(dec, codec->name, buflen - strlen(dec) - 1);
}
}
if (strlen(enc) || strlen(dec)) {
strncat(buf, " (", buflen - strlen(buf) - 1);
if (strlen(enc)) {
strncat(buf, "enc:", buflen - strlen(buf) - 1);
strncat(buf, enc, buflen - strlen(buf) - 1);
}
if (strlen(dec)) {
if (strlen(enc)) {
strncat(buf, ", ", buflen - strlen(buf) - 1);
}
strncat(buf, "dec:", buflen - strlen(buf) - 1);
strncat(buf, dec, buflen - strlen(buf) - 1);
}
strncat(buf, ")", buflen - strlen(buf) - 1);
}
#elif LIBAVCODEC_VERSION_MAJOR >= 54
const AVCodec *codec;
if ((codec = avcodec_find_encoder(id))) {
strncpy(buf, " (enc:", buflen - 1);
buf[buflen - 1] = '\0';
do {
if (av_codec_is_encoder(codec) && codec->id == id) {
strncat(buf, " ", buflen - strlen(buf) - 1);
strncat(buf, codec->name, buflen - strlen(buf) - 1);
}
} while ((codec = av_codec_next(codec)));
}
if ((codec = avcodec_find_decoder(id))) {
if (avcodec_find_encoder(id)) {
strncat(buf, ", ", buflen - strlen(buf) - 1);
} else {
strncat(buf, " (", buflen - strlen(buf) - 1);
}
strncat(buf, "dec:", buflen - strlen(buf) - 1);
do {
if (av_codec_is_decoder(codec) && codec->id == id) {
strncat(buf, " ", buflen - strlen(buf) - 1);
strncat(buf, codec->name, buflen - strlen(buf) - 1);
}
} while ((codec = av_codec_next(codec)));
}
if (avcodec_find_encoder(id) || avcodec_find_decoder(id)) {
strncat(buf, ")", buflen - strlen(buf) - 1);
}
#else
UNUSED(id);
UNUSED(buf);
UNUSED(buflen);
#endif
}
static void usage() {
printf("Libavcodec encoder usage:\n");
cout << style::bold << fg::red << "\t-c libavcodec" << fg::reset << "[:codec=<codec_name>|:encoder=<encoder>][:bitrate=<bits_per_sec>|:bpp=<bits_per_pixel>][:crf=<crf>|:cqp=<cqp>]"
"[:subsampling=<subsampling>][:gop=<gop>]"
"[:disable_intra_refresh][:threads=<thr_mode>][:<lavc_opt>=<val>]*\n" <<
style::reset;
cout << style::bold << "\t\t<encoder>" << style::reset << " specifies encoder (eg. nvenc or libx264 for H.264)\n";
cout << style::bold << "\t\t<codec_name>" << style::reset << " may be specified codec name (default MJPEG), supported codecs:\n";
for (auto && param : codec_params) {
if (param.second.av_codec != AV_CODEC_ID_NONE) {
char avail[1024];
const AVCodec *codec;
if ((codec = avcodec_find_encoder(param.second.av_codec))) {
strcpy(avail, "available");
} else {
strcpy(avail, "not available");
}
print_codec_info(param.second.av_codec, avail + strlen(avail), sizeof avail - strlen(avail));
cout << "\t\t\t" << style::bold << get_codec_name(param.first) << style::reset << " - " << avail << "\n";
}
}
cout << style::bold << "\t\tdisable_intra_refresh" << style::reset << " - do not use Periodic Intra Refresh (H.264/H.265)\n";
cout << style::bold << "\t\t<bits_per_sec>" << style::reset << " specifies requested bitrate\n"
<< "\t\t\t0 means codec default (same as when parameter omitted)\n";
cout << style::bold << "\t\t<bits_per_pixel>" << style::reset << " specifies requested bitrate using compressed bits per pixel\n"
<< "\t\t\tbitrate = frame width * frame height * bits_per_pixel * fps\n";
cout << style::bold << "\t\t<crf>" << style::reset << " specifies CRF factor (only for libx264/libx265)\n";
cout << style::bold << "\t\t<subsampling" << style::reset << "> may be one of 444, 422, or 420, default 420 for progresive, 422 for interlaced\n";
cout << style::bold << "\t\t<thr_mode>" << style::reset << " can be one of \"no\", \"frame\" or \"slice\"\n";
cout << style::bold << "\t\t<gop>" << style::reset << " specifies GOP size\n";
cout << style::bold << "\t\t<lavc_opt>" << style::reset << " arbitrary option to be passed directly to libavcodec (eg. preset=veryfast), eventual colons must be backslash-escaped (eg. for x264opts)\n";
printf("\tLibavcodec version (linked): %s\n", LIBAVCODEC_IDENT);
}
static int parse_fmt(struct state_video_compress_libav *s, char *fmt) {
if (!fmt) {
return 0;
}
// replace all '\:' with 2xDEL
replace_all(fmt, ESCAPED_COLON, DELDEL);
char *item, *save_ptr = NULL;
while ((item = strtok_r(fmt, ":", &save_ptr)) != NULL) {
if(strncasecmp("help", item, strlen("help")) == 0) {
usage();
return 1;
} else if(strncasecmp("codec=", item, strlen("codec=")) == 0) {
char *codec = item + strlen("codec=");
s->requested_codec_id = get_codec_from_name(codec);
if (s->requested_codec_id == VIDEO_CODEC_NONE) {
log_msg(LOG_LEVEL_ERROR, "[lavc] Unable to find codec: \"%s\"\n", codec);
return -1;
}
} else if(strncasecmp("bitrate=", item, strlen("bitrate=")) == 0) {
char *bitrate_str = item + strlen("bitrate=");
s->requested_bitrate = unit_evaluate(bitrate_str);
assert(s->requested_bitrate >= 0);
} else if(strncasecmp("bpp=", item, strlen("bpp=")) == 0) {
char *bpp_str = item + strlen("bpp=");
s->requested_bpp = unit_evaluate_dbl(bpp_str);
assert(!std::isnan(s->requested_bpp));
} else if(strncasecmp("crf=", item, strlen("crf=")) == 0) {
char *crf_str = item + strlen("crf=");
s->requested_crf = atof(crf_str);
} else if(strncasecmp("cqp=", item, strlen("cqp=")) == 0) {
char *cqp_str = item + strlen("cqp=");
s->requested_cqp = atoi(cqp_str);
} else if(strncasecmp("subsampling=", item, strlen("subsampling=")) == 0) {
char *subsample_str = item + strlen("subsampling=");
s->requested_subsampling = atoi(subsample_str);
if (s->requested_subsampling != 444 &&
s->requested_subsampling != 422 &&
s->requested_subsampling != 420) {
log_msg(LOG_LEVEL_ERROR, "[lavc] Supported subsampling is 444, 422, or 420.\n");
return -1;
}
} else if (strcasecmp("disable_intra_refresh", item) == 0) {
s->params.no_periodic_intra = true;
} else if(strncasecmp("threads=", item, strlen("threads=")) == 0) {
char *threads = item + strlen("threads=");
s->params.thread_mode = threads;
} else if(strncasecmp("encoder=", item, strlen("encoder=")) == 0) {
char *backend = item + strlen("encoder=");
s->backend = backend;
} else if(strncasecmp("gop=", item, strlen("gop=")) == 0) {
char *gop = item + strlen("gop=");
s->requested_gop = atoi(gop);
} else if (strchr(item, '=')) {
char *c_val_dup = strdup(strchr(item, '=') + 1);
replace_all(c_val_dup, DELDEL, ":");
string key, val;
key = string(item, strchr(item, '='));
s->lavc_opts[key] = c_val_dup;
free(c_val_dup);
} else {
log_msg(LOG_LEVEL_ERROR, "[lavc] Error: unknown option %s.\n",
item);
return -1;
}
fmt = NULL;
}
return 0;
}
static list<compress_preset> get_libavcodec_presets() {
list<compress_preset> ret;
#if LIBAVCODEC_VERSION_INT <= AV_VERSION_INT(58, 9, 100)
avcodec_register_all();
#endif
pthread_mutex_t *lavcd_global_lock = rm_acquire_shared_lock(LAVCD_LOCK_NAME);
pthread_mutex_lock(lavcd_global_lock);
if (avcodec_find_encoder_by_name("libx264")) {
ret.push_back({"encoder=libx264:bpp=0.096", 20, [](const struct video_desc *d){return (long)(d->width * d->height * d->fps * 0.096);}, {25, 1.5, 0}, {15, 1, 0}});
ret.push_back({"encoder=libx264:bpp=0.193", 30, [](const struct video_desc *d){return (long)(d->width * d->height * d->fps * 0.193);}, {28, 1.5, 0}, {20, 1, 0}});
ret.push_back({"encoder=libx264:bpp=0.289", 50, [](const struct video_desc *d){return (long)(d->width * d->height * d->fps * 0.289);}, {30, 1.5, 0}, {25, 1, 0}});
}
// NVENC and MJPEG are disabled in order not to be chosen by CoUniverse.
// Enable if needed (also possible to add H.265 etc).
#if 0
AVCodec *codec;
if ((codec = avcodec_find_encoder_by_name("nvenc_h264"))) {
AVCodecContext *codec_ctx = avcodec_alloc_context3(codec);
assert(codec_ctx);
codec_ctx->pix_fmt = AV_PIX_FMT_NV12;
codec_ctx->width = 1920;
codec_ctx->height = 1080;
if (avcodec_open2(codec_ctx, codec, NULL) == 0) {
ret.push_back({"encoder=nvenc_h264:bpp=0.096", 20, [](const struct video_desc *d){return (long)(d->width * d->height * d->fps * 0.096);}, {25, 0, 0.2}, {15, 1, 0}});
ret.push_back({"encoder=nvenc_h264:bpp=0.193", 30, [](const struct video_desc *d){return (long)(d->width * d->height * d->fps * 0.193);}, {28, 0, 0.2}, {20, 1, 0}});
ret.push_back({"encoder=nvenc_h264:bitrate=0.289", 50, [](const struct video_desc *d){return (long)(d->width * d->height * d->fps * 0.289);}, {30, 0, 0.2}, {25, 1, 0}});
avcodec_close(codec_ctx);
}
av_free(codec_ctx);
}
#endif
#if 0
ret.push_back({ "codec=MJPEG", 35, 50*1000*1000, {20, 0.75, 0}, {10, 0.5, 0}});
#endif
pthread_mutex_unlock(lavcd_global_lock);
rm_release_shared_lock(LAVCD_LOCK_NAME);
return ret;
}
struct module * libavcodec_compress_init(struct module *parent, const char *opts)
{
struct state_video_compress_libav *s;
s = new state_video_compress_libav();
s->lavcd_global_lock = rm_acquire_shared_lock(LAVCD_LOCK_NAME);
if (log_level >= LOG_LEVEL_VERBOSE) {
av_log_set_level(AV_LOG_VERBOSE);
}
#if LIBAVCODEC_VERSION_INT <= AV_VERSION_INT(58, 9, 100)
/* register all the codecs (you can also register only the codec
* you wish to have smaller code */
avcodec_register_all();
#endif
s->codec_ctx = NULL;
s->in_frame = NULL;
s->requested_codec_id = VIDEO_CODEC_NONE;
s->requested_subsampling = 0;
s->params.thread_mode = DEFAULT_THREAD_MODE;
// both following options take 0 as a valid argument, so we use -1 as an implicit value
s->requested_crf = -1;
s->requested_cqp = -1;
memset(&s->saved_desc, 0, sizeof(s->saved_desc));
char *fmt = strdup(opts);
int ret = parse_fmt(s, fmt);
free(fmt);
if(ret != 0) {
delete s;
if(ret > 0)
return &compress_init_noerr;
else
return NULL;
}
s->params.cpu_count = thread::hardware_concurrency();
if(s->params.cpu_count < 1) {
log_msg(LOG_LEVEL_WARNING, "Warning: Cannot get number of CPU cores!\n");
s->params.cpu_count = 1;
}
s->in_frame_part = (AVFrame **) calloc(s->params.cpu_count, sizeof(AVFrame *));
for(int i = 0; i < s->params.cpu_count; i++) {
s->in_frame_part[i] = av_frame_alloc();
}
s->decoded = NULL;
module_init_default(&s->module_data);
s->module_data.cls = MODULE_CLASS_DATA;
s->module_data.priv_data = s;
s->module_data.deleter = libavcodec_compress_done;
module_register(&s->module_data, parent);
s->hwenc = false;
s->hwframe = NULL;
#ifdef HAVE_SWSCALE
s->sws_ctx = nullptr;
s->out_pixfmt = AV_PIX_FMT_NONE;
s->sws_frame = nullptr;
#endif
return &s->module_data;
}
#ifdef HWACC_VAAPI
static int vaapi_init(struct AVCodecContext *s){
int pool_size = 20; //Default in ffmpeg examples
AVBufferRef *device_ref = nullptr;
AVBufferRef *hw_frames_ctx = nullptr;
int ret = create_hw_device_ctx(AV_HWDEVICE_TYPE_VAAPI, &device_ref);
if(ret < 0)
goto fail;
if (s->active_thread_type & FF_THREAD_FRAME)
pool_size += s->thread_count;
ret = create_hw_frame_ctx(device_ref,
s->width,
s->height,
AV_PIX_FMT_VAAPI,
AV_PIX_FMT_NV12,
pool_size,
&hw_frames_ctx);
if(ret < 0)
goto fail;
s->hw_frames_ctx = hw_frames_ctx;
av_buffer_unref(&device_ref);
return 0;
fail:
av_buffer_unref(&hw_frames_ctx);
av_buffer_unref(&device_ref);
return ret;
}
#endif
static void print_codec_supp_pix_fmts(const list<enum AVPixelFormat>
&req_pix_fmts, const enum AVPixelFormat *first) {
char out[1024] = "[lavc] Codec supported pixel formats:";
const enum AVPixelFormat *it = first;
while (*it != AV_PIX_FMT_NONE) {
strncat(out, " ", sizeof out - strlen(out) - 1);
strncat(out, av_get_pix_fmt_name(*it++), sizeof out - strlen(out) - 1);
}
fprintf(stderr, "%s\n", out);
out[0] = '\0';
strncat(out, "[lavd] Usable pixel formats:", sizeof out - strlen(out) - 1);
for (auto &c : req_pix_fmts) {
strncat(out, " ", sizeof out - strlen(out) - 1);
strncat(out, av_get_pix_fmt_name(c), sizeof out - strlen(out) - 1);
}
fprintf(stderr, "%s\n", out);
}
/**
* Finds best pixel format
*
* Iterates over formats in req_pix_fmts and tries to find the same format in
* second list, codec_pix_fmts. If found, returns that format. Efectivelly
* select first match of item from first list in second list.
*
* @note
* Unusable pixel formats and a currently selected one are removed from
* req_pix_fmts.
*/
static enum AVPixelFormat get_first_matching_pix_fmt(list<enum AVPixelFormat>
&req_pix_fmts, const enum AVPixelFormat *codec_pix_fmts)
{
if(codec_pix_fmts == NULL)
return AV_PIX_FMT_NONE;
for (auto it = req_pix_fmts.begin(); it != req_pix_fmts.end(); ) {
const enum AVPixelFormat *tmp = codec_pix_fmts;
enum AVPixelFormat fmt;
while((fmt = *tmp++) != AV_PIX_FMT_NONE) {
if (fmt == *it) {
enum AVPixelFormat ret = *it;
req_pix_fmts.erase(it);
return ret;
}
}
it = req_pix_fmts.erase(it);
}
return AV_PIX_FMT_NONE;
}
bool set_codec_ctx_params(struct state_video_compress_libav *s, AVPixelFormat pix_fmt, struct video_desc desc, codec_t ug_codec)
{
bool is_x264_x265 = strncmp(s->codec_ctx->codec->name, "libx264", strlen("libx264")) == 0 ||
strcmp(s->codec_ctx->codec->name, "libx265") == 0;
double avg_bpp; // average bit per pixel
avg_bpp = s->requested_bpp > 0.0 ? s->requested_bpp :
codec_params[ug_codec].avg_bpp;
int bitrate = s->requested_bitrate > 0 ? s->requested_bitrate :
desc.width * desc.height * avg_bpp * desc.fps;
bool have_preset = s->lavc_opts.find("preset") != s->lavc_opts.end();
s->codec_ctx->strict_std_compliance = -2;
// set bitrate
if ((s->requested_bitrate > 0 || s->requested_bpp > 0.0)
|| !is_x264_x265) {
s->codec_ctx->bit_rate = bitrate;
s->codec_ctx->bit_rate_tolerance = bitrate / desc.fps * 6;
log_msg(LOG_LEVEL_INFO, "[lavc] Setting bitrate to %d bps.\n", bitrate);
}
if (is_x264_x265) {
// set CRF unless explicitly specified CQP or ABR (bitrate)
if (s->requested_crf >= 0.0 || (s->requested_bitrate == 0 && s->requested_bpp == 0.0 && s->requested_cqp == -1)) {
double crf = s->requested_crf >= 0.0 ? s->requested_crf : DEFAULT_X264_X265_CRF;
av_opt_set_double(s->codec_ctx->priv_data, "crf", crf, 0);
log_msg(LOG_LEVEL_INFO, "[lavc] Setting CRF to %.2f.\n", crf);
}
if (s->requested_cqp >= 0) {
av_opt_set_int(s->codec_ctx->priv_data, "qp", s->requested_cqp, 0);
log_msg(LOG_LEVEL_INFO, "[lavc] Setting CQP to %d.\n", s->requested_cqp);
}
} else {
if (s->requested_crf >= 0.0) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unable to set CRF! Not supported for this encoder, ignored.\n");
}
if (s->requested_cqp >= 0.0) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unable to set CQP! Not supported for this encoder, ignored.\n");
}
}
/* resolution must be a multiple of two */
s->codec_ctx->width = desc.width;
s->codec_ctx->height = desc.height;
/* frames per second */
s->codec_ctx->time_base = (AVRational){1,(int) desc.fps};
if (s->requested_gop) {
s->codec_ctx->gop_size = s->requested_gop;
} else {
s->codec_ctx->gop_size = DEFAULT_GOP_SIZE;
}
s->codec_ctx->max_b_frames = 0;
s->codec_ctx->pix_fmt = pix_fmt;
codec_params[ug_codec].set_param(s->codec_ctx, &s->params);
if (!have_preset) {
string preset{};
if (codec_params[ug_codec].get_preset) {
preset = codec_params[ug_codec].get_preset(s->codec_ctx->codec->name, desc.width, desc.height, desc.fps);
}
if (!preset.empty()) {
if (av_opt_set(s->codec_ctx->priv_data, "preset", preset.c_str(), 0) != 0) {
LOG(LOG_LEVEL_WARNING) << "[lavc] Warning: Unable to set preset.\n";
} else {
LOG(LOG_LEVEL_INFO) << "[lavc] Setting preset to " << preset << ".\n";
}
} else {
LOG(LOG_LEVEL_WARNING) << "[lavc] Warning: Unable to find suitable preset for encoder " << s->codec_ctx->codec->name << ".\n";
}
}
// set user supplied parameters
for (auto item : s->lavc_opts) {
if(av_opt_set(s->codec_ctx->priv_data, item.first.c_str(), item.second.c_str(), 0) != 0) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Error: Unable to set '%s' to '%s'. Check command-line options.\n", item.first.c_str(), item.second.c_str());
return false;
}
}
return true;
}
/**
* Returns a UltraGrid decoder needed to decode from the UltraGrid codec in
* to out with respect to conversions in @ref conversions. Therefore it should
* be feasible to convert in to out and then convert out to av (last step may
* be omitted if the format is native for both indicated in
* ug_to_av_pixfmt_map).
*/
decoder_t get_decoder_from_uv_to_uv(codec_t in, AVPixelFormat av, codec_t *out) {
bool slow[] = {false, true};
for (auto use_slow : slow) {
for (auto const &i : ug_to_av_pixfmt_map) { // no FFMPEG conversion needed
auto decoder = get_decoder_from_to(in, i.first, use_slow);
if (decoder && i.second == av) {
*out = i.first;
return decoder;
}
}
for (auto c = get_uv_to_av_conversions(); c->src != VIDEO_CODEC_NONE; c++) { // FFMPEG conversion needed
auto decoder = get_decoder_from_to(in, c->src, use_slow);
if (decoder && c->dst == av) {
*out = c->src;
return decoder;
}
}
}
*out = VIDEO_CODEC_NONE;
return nullptr;
}
static int get_subsampling(enum AVPixelFormat fmt) {
const struct AVPixFmtDescriptor *pd = av_pix_fmt_desc_get(fmt);
if (pd->log2_chroma_w == 0 && pd->log2_chroma_h == 0) {
return 444;
}
if (pd->log2_chroma_w == 1 && pd->log2_chroma_h == 0) {
return 422;
}
if (pd->log2_chroma_w == 1 && pd->log2_chroma_h == 1) {
return 420;
}
return 0; // other (todo)
}
/**
* Returns list of pix_fmts that UltraGrid can supply to the encoder.
* The list is ordered according to input description and requested subsampling.
*/
static list<enum AVPixelFormat> get_available_pix_fmts(struct video_desc in_desc,
AVCodec *codec, int requested_subsampling, codec_t force_conv_to)
{
list<enum AVPixelFormat> fmts;
#ifdef HWACC_VAAPI
if (regex_match(codec->name, regex(".*vaapi.*"))) {
fmts.push_back(AV_PIX_FMT_VAAPI);
}
#else
UNUSED(codec);
#endif
// add the format itself if it matches the ultragrid one
if (ug_to_av_pixfmt_map.find(in_desc.color_spec) != ug_to_av_pixfmt_map.end()) {
if (!force_conv_to || force_conv_to == in_desc.color_spec) {
fmts.push_back(ug_to_av_pixfmt_map.find(in_desc.color_spec)->second);
}
}
vector<enum AVPixelFormat> available_formats; // those for that there exitst a conversion and respect requested subsampling (if given)
for (auto const & i : ug_to_av_pixfmt_map) { // no to FFMPEG conversion, just UG conversion
if (get_decoder_from_to(in_desc.color_spec, i.first, true)) {
int codec_subsampling = get_subsampling(i.second);
if ((requested_subsampling == 0 ||
requested_subsampling == codec_subsampling) &&
(!force_conv_to || force_conv_to == i.first)) {
available_formats.push_back(i.second);
}
}
}
for (auto c = get_uv_to_av_conversions(); c->src != VIDEO_CODEC_NONE; c++) { // FFMPEG conversion needed
if (c->src == in_desc.color_spec ||
get_decoder_from_to(in_desc.color_spec, c->src, true)) {
int codec_subsampling = get_subsampling(c->dst);
if ((requested_subsampling == 0 ||
requested_subsampling == codec_subsampling) &&
(!force_conv_to || force_conv_to == c->src)) {
available_formats.push_back(c->dst);
}
}
}
int bits_per_comp = get_bits_per_component(in_desc.color_spec);
bool is_rgb = codec_is_a_rgb(in_desc.color_spec);
int preferred_subsampling = requested_subsampling;
if (requested_subsampling == 0) {
if (in_desc.interlacing == INTERLACED_MERGED) {
preferred_subsampling = 422;
} else {
preferred_subsampling = 420;
}
}
// sort
sort(available_formats.begin(), available_formats.end(), [bits_per_comp, is_rgb, preferred_subsampling](enum AVPixelFormat a, enum AVPixelFormat b) {
const struct AVPixFmtDescriptor *pda = av_pix_fmt_desc_get(a);
const struct AVPixFmtDescriptor *pdb = av_pix_fmt_desc_get(b);
#if defined(FF_API_PLUS1_MINUS1)
int deptha = pda->comp[0].depth;
int depthb = pdb->comp[0].depth;
#else
int deptha = pda->comp[0].depth_minus1;
int depthb = pdb->comp[0].depth_minus1;
#endif
#if defined(AV_PIX_FMT_FLAG_RGB)
bool rgba = pda->flags & AV_PIX_FMT_FLAG_RGB;
bool rgbb = pdb->flags & AV_PIX_FMT_FLAG_RGB;
#else
bool rgba = pda->flags & PIX_FMT_RGB;
bool rgbb = pdb->flags & PIX_FMT_RGB;
#endif
int subsa = get_subsampling(a);
int subsb = get_subsampling(b);
if (rgba != rgbb) {
if (rgba == is_rgb) {
return true;
}
return false;
}
if (deptha != depthb) {
if (deptha == bits_per_comp) {
return true;
}
if (depthb == bits_per_comp) {
return false;
}
if (deptha == 8) { // still default to 8-bit if not found exact bit depth
return true;
}
if (depthb == 8) {
return false;
}
return deptha > depthb;
}
if (subsa != subsb) {
if (subsa == preferred_subsampling) {
return true;
}
if (subsb == preferred_subsampling) {
return false;
}
return subsa > subsb;
}
return a < b;
});
for (auto &c : available_formats) {
fmts.push_back(c);
}
return fmts;
}
ADD_TO_PARAM(lavc_use_codec, "lavc-use-codec",
"* lavc-use-codec=<c>\n"
" Restrict codec to use user specified pix fmt. Can be used eg. to enforce\n"
" AV_PIX_FMT_NV12 (nv12) since some time ago, other codecs were broken\n"
" for NVENC encoder.\n"
" Another possibility is to use yuv420p10le, yuv422p10le or yuv444p10le\n"
" to force 10-bit encoding.\n"
" UltraGrid pixel formats (v210, R10k, UYVY etc.) are also accepted.\n");
/**
* Returns ordered list of codec preferences for input description and
* requested_subsampling.
*/
list<enum AVPixelFormat> get_requested_pix_fmts(struct video_desc in_desc,
AVCodec *codec, int requested_subsampling) {
codec_t force_conv_to = VIDEO_CODEC_NONE; // if non-zero, use only this codec as a target
// of UG conversions (before FFMPEG conversion)
// or (likely) no conversion at all
if (get_commandline_param("lavc-use-codec")) {
const char *val = get_commandline_param("lavc-use-codec");
enum AVPixelFormat fmt = av_get_pix_fmt(val);
if (fmt != AV_PIX_FMT_NONE) {
return { fmt };
}
force_conv_to = get_codec_from_name(val);
if (!force_conv_to) {
LOG(LOG_LEVEL_FATAL) << MOD_NAME << "Wrong codec string: " << val << ".\n";
exit_uv(1);
return {};
}
}
return get_available_pix_fmts(in_desc, codec, requested_subsampling, force_conv_to);
}
static bool try_open_codec(struct state_video_compress_libav *s,
AVPixelFormat &pix_fmt,
struct video_desc desc,
codec_t ug_codec,
AVCodec *codec)
{
// avcodec_alloc_context3 allocates context and sets default value
s->codec_ctx = avcodec_alloc_context3(codec);
if (!s->codec_ctx) {
log_msg(LOG_LEVEL_ERROR, "Could not allocate video codec context\n");
return false;
}
if (!set_codec_ctx_params(s, pix_fmt, desc, ug_codec)) {
avcodec_free_context(&s->codec_ctx);
s->codec_ctx = NULL;
return false;
}
log_msg(LOG_LEVEL_VERBOSE, "[lavc] Trying pixfmt: %s\n", av_get_pix_fmt_name(pix_fmt));
#ifdef HWACC_VAAPI
if (pix_fmt == AV_PIX_FMT_VAAPI){
int ret = vaapi_init(s->codec_ctx);
if (ret != 0) {
avcodec_free_context(&s->codec_ctx);
s->codec_ctx = NULL;
return false;
}
s->hwenc = true;
s->hwframe = av_frame_alloc();
av_hwframe_get_buffer(s->codec_ctx->hw_frames_ctx, s->hwframe, 0);
pix_fmt = AV_PIX_FMT_NV12;
}
#endif
/* open it */
pthread_mutex_lock(s->lavcd_global_lock);
if (avcodec_open2(s->codec_ctx, codec, NULL) < 0) {
avcodec_free_context(&s->codec_ctx);
s->codec_ctx = NULL;
log_msg(LOG_LEVEL_ERROR, "[lavc] Could not open codec for pixel format %s\n", av_get_pix_fmt_name(pix_fmt));
pthread_mutex_unlock(s->lavcd_global_lock);
return false;
}
pthread_mutex_unlock(s->lavcd_global_lock);
return true;
}
static bool find_decoder(struct video_desc desc,
AVPixelFormat pixfmt,
codec_t *decoded_codec,
decoder_t *decoder)
{
if (ug_to_av_pixfmt_map.find(desc.color_spec) != ug_to_av_pixfmt_map.end()
&& pixfmt == ug_to_av_pixfmt_map.find(desc.color_spec)->second) {
*decoded_codec = desc.color_spec;
*decoder = vc_memcpy;
} else {
*decoder = get_decoder_from_uv_to_uv(desc.color_spec, pixfmt, decoded_codec);
}
return *decoder != nullptr;
}
static bool configure_with(struct state_video_compress_libav *s, struct video_desc desc)
{
int ret;
codec_t ug_codec = VIDEO_CODEC_NONE;
AVPixelFormat pix_fmt;
AVCodec *codec = nullptr;
#ifdef HAVE_SWSCALE
sws_freeContext(s->sws_ctx);
s->sws_ctx = nullptr;
av_frame_free(&s->sws_frame);
s->out_pixfmt = AV_PIX_FMT_NONE;
#endif //HAVE_SWSCALE
s->params.fps = desc.fps;
s->params.interlaced = desc.interlacing == INTERLACED_MERGED;
// Open encoder specified by user if given
if (!s->backend.empty()) {
codec = avcodec_find_encoder_by_name(s->backend.c_str());
if (!codec) {
log_msg(LOG_LEVEL_ERROR, "[lavc] Warning: requested encoder \"%s\" not found!\n",
s->backend.c_str());
return false;
}
if (s->requested_codec_id != VIDEO_CODEC_NONE && s->requested_codec_id != get_ug_for_av_codec(codec->id)) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Codec and encoder don't match!\n");
return false;
}
ug_codec = get_ug_for_av_codec(codec->id);
if (ug_codec == VIDEO_CODEC_NONE) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Requested encoder not supported in UG!\n");
return false;
}
}
if (ug_codec == VIDEO_CODEC_NONE) {
if (s->requested_codec_id == VIDEO_CODEC_NONE) {
ug_codec = DEFAULT_CODEC;
} else {
ug_codec = s->requested_codec_id;
}
}
if (codec_params.find(ug_codec) == codec_params.end()) {
log_msg(LOG_LEVEL_ERROR, "[lavc] Requested output codec isn't "
"currently supported.\n");
return false;
}
// Else, try to open prefered encoder for requested codec
if (!codec && codec_params[ug_codec].get_prefered_encoder) {
const char *prefered_encoder = codec_params[ug_codec].get_prefered_encoder(
codec_is_a_rgb(desc.color_spec));
codec = avcodec_find_encoder_by_name(prefered_encoder);
if (!codec) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Warning: prefered encoder \"%s\" not found! Trying default encoder.\n",
prefered_encoder);
}
}
// Finally, try to open any encoder for requested codec
if (!codec) {
codec = avcodec_find_encoder(codec_params[ug_codec].av_codec);
}
if (!codec) {
log_msg(LOG_LEVEL_ERROR, "Libavcodec doesn't contain encoder for specified codec.\n"
"Hint: Check if you have libavcodec-extra package installed.\n");
return false;
} else {
log_msg(LOG_LEVEL_NOTICE, "[lavc] Using codec: %s, encoder: %s\n",
get_codec_name(ug_codec), codec->name);
}
// Try to open the codec context
// It is done in a loop because some pixel formats that are reported
// by codec can actually fail (typically YUV444 in hevc_nvenc for Maxwell
// cards).
list<enum AVPixelFormat> requested_pix_fmt_it = get_requested_pix_fmts(desc, codec, s->requested_subsampling);
while ((pix_fmt = get_first_matching_pix_fmt(requested_pix_fmt_it, codec->pix_fmts)) != AV_PIX_FMT_NONE) {
if(try_open_codec(s, pix_fmt, desc, ug_codec, codec)){
break;
}
}
if (pix_fmt == AV_PIX_FMT_NONE || log_level >= LOG_LEVEL_DEBUG) {
print_codec_supp_pix_fmts(get_requested_pix_fmts(desc, codec, s->requested_subsampling), codec->pix_fmts);
}
if (pix_fmt == AV_PIX_FMT_NONE) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unable to find suitable pixel format for: %s.\n", get_codec_name(desc.color_spec));
if (s->requested_subsampling != 0) {
log_msg(LOG_LEVEL_ERROR, "[lavc] Requested subsampling not supported. "
"Try different subsampling, eg. "
"\"subsampling={420,422,444}\".\n");
}
return false;
}
log_msg(LOG_LEVEL_INFO, "[lavc] Selected pixfmt: %s\n", av_get_pix_fmt_name(pix_fmt));
s->selected_pixfmt = pix_fmt;
if(!find_decoder(desc, s->selected_pixfmt, &s->decoded_codec, &s->decoder)){
log_msg(LOG_LEVEL_ERROR, "[lavc] Failed to find a way to convert %s to %s\n",
get_codec_name(desc.color_spec), av_get_pix_fmt_name(s->selected_pixfmt));
#ifndef HAVE_SWSCALE
return false;
#else
log_msg(LOG_LEVEL_NOTICE, "[lavc] Attempting to use swscale to convert.\n");
//get all AVPixelFormats we can convert to and pick the first
auto fmts = get_available_pix_fmts(desc, codec, s->requested_subsampling, VIDEO_CODEC_NONE);
s->out_pixfmt = s->selected_pixfmt;
s->selected_pixfmt = fmts.front();
if(!find_decoder(desc, s->selected_pixfmt, &s->decoded_codec, &s->decoder)){
//Should not happen as get_available_pix_fmts should only
//return formats we can decode to
log_msg(LOG_LEVEL_ERROR, "[lavc] Unable to convert even using swscale. Giving up.\n");
return false;
}
s->sws_ctx = sws_getContext(desc.width,
desc.height,
s->selected_pixfmt,
desc.width,
desc.height,
s->out_pixfmt,
SWS_POINT,
NULL,
NULL,
NULL);
if(!s->sws_ctx){
log_msg(LOG_LEVEL_ERROR, "[lavc] Unable to init sws context.\n");
return false;
}
s->sws_frame = av_frame_alloc();
if (!s->sws_frame) {
log_msg(LOG_LEVEL_ERROR, "Could not allocate sws frame\n");
return false;
}
s->sws_frame->width = s->codec_ctx->width;
s->sws_frame->height = s->codec_ctx->height;
s->sws_frame->format = s->out_pixfmt;
ret = av_image_alloc(s->sws_frame->data, s->sws_frame->linesize,
s->sws_frame->width, s->sws_frame->height,
s->out_pixfmt, 32);
if (ret < 0) {
log_msg(LOG_LEVEL_ERROR, "Could not allocate raw picture buffer for sws\n");
return false;
}
log_msg(LOG_LEVEL_NOTICE, "[lavc] Using swscale to convert %s to %s.\n",
av_get_pix_fmt_name(s->selected_pixfmt),
av_get_pix_fmt_name(s->out_pixfmt));
#endif //HAVE_SWSCALE
}
s->decoded = (unsigned char *) malloc(vc_get_linesize(desc.width, s->decoded_codec) * desc.height);
s->in_frame = av_frame_alloc();
if (!s->in_frame) {
log_msg(LOG_LEVEL_ERROR, "Could not allocate video frame\n");
return false;
}
AVPixelFormat fmt = (s->hwenc) ? AV_PIX_FMT_NV12 : s->selected_pixfmt;
#if LIBAVCODEC_VERSION_MAJOR >= 53
s->in_frame->format = fmt;
s->in_frame->width = s->codec_ctx->width;
s->in_frame->height = s->codec_ctx->height;
#endif
/* the image can be allocated by any means and av_image_alloc() is
* just the most convenient way if av_malloc() is to be used */
ret = av_image_alloc(s->in_frame->data, s->in_frame->linesize,
s->codec_ctx->width, s->codec_ctx->height,
fmt, 32);
if (ret < 0) {
log_msg(LOG_LEVEL_ERROR, "Could not allocate raw picture buffer\n");
return false;
}
// conversion needed
if (ug_to_av_pixfmt_map.find(desc.color_spec) == ug_to_av_pixfmt_map.end()
|| ug_to_av_pixfmt_map.find(desc.color_spec)->second != s->selected_pixfmt) {
for(int i = 0; i < s->params.cpu_count; ++i) {
int chunk_size = s->codec_ctx->height / s->params.cpu_count;
chunk_size = chunk_size / 2 * 2;
s->in_frame_part[i]->data[0] = s->in_frame->data[0] + s->in_frame->linesize[0] * i *
chunk_size;
if (av_pix_fmt_desc_get(s->selected_pixfmt)->log2_chroma_h == 1) { // eg. 4:2:0
chunk_size /= 2;
}
s->in_frame_part[i]->data[1] = s->in_frame->data[1] + s->in_frame->linesize[1] * i *
chunk_size;
s->in_frame_part[i]->data[2] = s->in_frame->data[2] + s->in_frame->linesize[2] * i *
chunk_size;
s->in_frame_part[i]->linesize[0] = s->in_frame->linesize[0];
s->in_frame_part[i]->linesize[1] = s->in_frame->linesize[1];
s->in_frame_part[i]->linesize[2] = s->in_frame->linesize[2];
}
} else {
av_freep(s->in_frame->data); // allocated buffers won't be needed and pointers
// will be filled by input buffers. av_image_alloc()
// was called to fill linesizes, however.
}
s->saved_desc = desc;
s->compressed_desc = desc;
s->compressed_desc.color_spec = ug_codec;
s->compressed_desc.tile_count = 1;
s->out_codec = s->compressed_desc.color_spec;
return true;
}
static pixfmt_callback_t select_pixfmt_callback(AVPixelFormat fmt, codec_t src) {
// no conversion needed
if (ug_to_av_pixfmt_map.find(src) != ug_to_av_pixfmt_map.end()
&& ug_to_av_pixfmt_map.find(src)->second == fmt) {
return nullptr;
}
for (auto c = get_uv_to_av_conversions(); c->src != VIDEO_CODEC_NONE; c++) { // FFMPEG conversion needed
if (c->src == src && c->dst == fmt) {
return c->func;
}
}
log_msg(LOG_LEVEL_FATAL, "[lavc] Cannot find conversion to any of encoder supported pixel format.\n");
abort();
}
struct my_task_data {
void (*callback)(AVFrame *out_frame, unsigned char *in_data, int width, int height);
AVFrame *out_frame;
unsigned char *in_data;
int width;
int height;
};
void *my_task(void *arg);
void *my_task(void *arg) {
struct my_task_data *data = (struct my_task_data *) arg;
data->callback(data->out_frame, data->in_data, data->width, data->height);
return NULL;
}
static shared_ptr<video_frame> libavcodec_compress_tile(struct module *mod, shared_ptr<video_frame> tx)
{
struct state_video_compress_libav *s = (struct state_video_compress_libav *) mod->priv_data;
static int frame_seq = 0;
int ret;
unsigned char *decoded;
shared_ptr<video_frame> out{};
list<unique_ptr<state_video_compress_libav, void (*)(void *)>> cleanup_callbacks; // at function exit handlers
libavcodec_check_messages(s);
if(!video_desc_eq_excl_param(video_desc_from_frame(tx.get()),
s->saved_desc, PARAM_TILE_COUNT)) {
cleanup(s);
int ret = configure_with(s, video_desc_from_frame(tx.get()));
if(!ret) {
return {};
}
}
auto dispose = [](struct video_frame *frame) {
#if LIBAVCODEC_VERSION_MAJOR >= 54 && LIBAVCODEC_VERSION_INT < AV_VERSION_INT(57, 37, 100)
AVPacket *pkt = (AVPacket *) frame->callbacks.dispose_udata;
av_packet_unref(pkt);
free(pkt);
#else
free(frame->tiles[0].data);
#endif // LIBAVCODEC_VERSION_MAJOR >= 54
vf_free(frame);
};
out = shared_ptr<video_frame>(vf_alloc_desc(s->compressed_desc), dispose);
#if LIBAVCODEC_VERSION_MAJOR >= 54 && LIBAVCODEC_VERSION_INT < AV_VERSION_INT(57, 37, 100)
int got_output;
AVPacket *pkt;
pkt = (AVPacket *) malloc(sizeof(AVPacket));
av_init_packet(pkt);
pkt->data = NULL;
pkt->size = 0;
out->callbacks.dispose_udata = pkt;
#else
out->tiles[0].data = (char *) malloc(s->compressed_desc.width *
s->compressed_desc.height * 4);
#endif // LIBAVCODEC_VERSION_MAJOR >= 54
s->in_frame->pts = frame_seq++;
if (s->decoder != vc_memcpy) {
unsigned char *line1 = (unsigned char *) tx->tiles[0].data;
unsigned char *line2 = (unsigned char *) s->decoded;
int src_linesize = vc_get_linesize(tx->tiles[0].width, tx->color_spec);
int dst_linesize = vc_get_linesize(tx->tiles[0].width, s->decoded_codec);
for (int i = 0; i < (int) tx->tiles[0].height; ++i) {
s->decoder(line2, line1, dst_linesize,
0, 8, 16);
line1 += src_linesize;
line2 += dst_linesize;
}
decoded = s->decoded;
} else {
decoded = (unsigned char *) tx->tiles[0].data;
}
auto pixfmt_conv_callback = select_pixfmt_callback(s->selected_pixfmt, s->decoded_codec);
if (pixfmt_conv_callback != nullptr) {
task_result_handle_t handle[s->params.cpu_count];
struct my_task_data data[s->params.cpu_count];
for(int i = 0; i < s->params.cpu_count; ++i) {
data[i].callback = pixfmt_conv_callback;
data[i].out_frame = s->in_frame_part[i];
size_t height = tx->tiles[0].height / s->params.cpu_count;
// height needs to be even
height = height / 2 * 2;
if (i < s->params.cpu_count - 1) {
data[i].height = height;
} else { // we are last so we need to do the rest
data[i].height = tx->tiles[0].height -
height * (s->params.cpu_count - 1);
}
data[i].width = tx->tiles[0].width;
data[i].in_data = decoded + i * height *
vc_get_linesize(tx->tiles[0].width, s->decoded_codec);
// run !
handle[i] = task_run_async(my_task, (void *) &data[i]);
}
for(int i = 0; i < s->params.cpu_count; ++i) {
wait_task(handle[i]);
}
} else { // no pixel format conversion needed
s->in_frame->data[0] = (uint8_t *) decoded;
// prevent leaving dangling pointer to the input buffer that may
// be freed by cleanup()
std::unique_ptr<state_video_compress_libav, void (*)(void*)> clean_data_ptr{s,
static_cast<void(*)(void *)>([](void *state) {
auto s = (state_video_compress_libav *) state;
s->in_frame->data[0] = nullptr;
})};
cleanup_callbacks.push_back(move(clean_data_ptr));
}
AVFrame *frame = s->in_frame;
#ifdef HWACC_VAAPI
if(s->hwenc){
av_hwframe_transfer_data(s->hwframe, s->in_frame, 0);
frame = s->hwframe;
}
#endif
#ifdef HAVE_SWSCALE
if(s->sws_ctx){
sws_scale(s->sws_ctx,
s->in_frame->data,
s->in_frame->linesize,
0,
s->in_frame->height,
s->sws_frame->data,
s->sws_frame->linesize);
frame = s->sws_frame;
}
#endif //HAVE_SWSCALE
/* encode the image */
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 37, 100)
out->tiles[0].data_len = 0;
if (libav_codec_has_extradata(s->out_codec)) { // we need to store extradata for HuffYUV/FFV1 in the beginning
out->tiles[0].data_len += sizeof(uint32_t) + s->codec_ctx->extradata_size;
*(uint32_t *)(void *) out->tiles[0].data = s->codec_ctx->extradata_size;
memcpy(out->tiles[0].data + sizeof(uint32_t), s->codec_ctx->extradata, s->codec_ctx->extradata_size);
}
ret = avcodec_send_frame(s->codec_ctx, frame);
if (ret == 0) {
AVPacket pkt;
av_init_packet(&pkt);
ret = avcodec_receive_packet(s->codec_ctx, &pkt);
while (ret == 0) {
assert(pkt.size + out->tiles[0].data_len <= s->compressed_desc.width * s->compressed_desc.height * 4 - out->tiles[0].data_len);
memcpy((uint8_t *) out->tiles[0].data + out->tiles[0].data_len,
pkt.data, pkt.size);
out->tiles[0].data_len += pkt.size;
av_packet_unref(&pkt);
ret = avcodec_receive_packet(s->codec_ctx, &pkt);
}
if (ret != AVERROR(EAGAIN) && ret != 0) {
print_libav_error(LOG_LEVEL_WARNING, "[lavc] Receive packet error", ret);
}
} else {
print_libav_error(LOG_LEVEL_WARNING, "[lavc] Error encoding frame", ret);
return {};
}
#elif LIBAVCODEC_VERSION_MAJOR >= 54
ret = avcodec_encode_video2(s->codec_ctx, pkt,
frame, &got_output);
if (ret < 0) {
log_msg(LOG_LEVEL_INFO, "Error encoding frame\n");
return {};
}
if (got_output) {
//printf("Write frame %3d (size=%5d)\n", frame_seq, s->pkt[buffer_idx].size);
out->tiles[0].data = (char *) pkt->data;
out->tiles[0].data_len = pkt->size;
} else {
return {};
}
#else
ret = avcodec_encode_video(s->codec_ctx, (uint8_t *) out->tiles[0].data,
out->tiles[0].width * out->tiles[0].height * 4,
frame);
if (ret < 0) {
log_msg(LOG_LEVEL_INFO, "Error encoding frame\n");
return {};
}
if (ret) {
//printf("Write frame %3d (size=%5d)\n", frame_seq, s->pkt[buffer_idx].size);
out->tiles[0].data_len = ret;
} else {
return {};
}
#endif // LIBAVCODEC_VERSION_MAJOR >= 54
log_msg(LOG_LEVEL_DEBUG, "[lavc] Compressed frame size: %d\n", out->tiles[0].data_len);
if (out->tiles[0].data_len == 0) { // videotoolbox returns sometimes frames with pkt->size == 0 but got_output == true
return {};
}
return out;
}
static void cleanup(struct state_video_compress_libav *s)
{
if(s->codec_ctx) {
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 37, 100)
int ret;
ret = avcodec_send_frame(s->codec_ctx, NULL);
if (ret != 0) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unexpected return value %d\n",
ret);
}
do {
AVPacket pkt;
av_init_packet(&pkt);
ret = avcodec_receive_packet(s->codec_ctx, &pkt);
av_packet_unref(&pkt);
if (ret != 0 && ret != AVERROR_EOF) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unexpected return value %d\n",
ret);
break;
}
} while (ret != AVERROR_EOF);
#endif
pthread_mutex_lock(s->lavcd_global_lock);
avcodec_close(s->codec_ctx);
avcodec_free_context(&s->codec_ctx);
pthread_mutex_unlock(s->lavcd_global_lock);
s->codec_ctx = NULL;
}
if(s->in_frame) {
av_freep(s->in_frame->data);
av_free(s->in_frame);
s->in_frame = NULL;
}
free(s->decoded);
s->decoded = NULL;
av_frame_free(&s->hwframe);
#ifdef HAVE_SWSCALE
sws_freeContext(s->sws_ctx);
av_frame_free(&s->sws_frame);
#endif //HAVE_SWSCALE
}
static void libavcodec_compress_done(struct module *mod)
{
struct state_video_compress_libav *s = (struct state_video_compress_libav *) mod->priv_data;
cleanup(s);
rm_release_shared_lock(LAVCD_LOCK_NAME);
for(int i = 0; i < s->params.cpu_count; i++) {
av_free(s->in_frame_part[i]);
}
free(s->in_frame_part);
delete s;
}
static void setparam_default(AVCodecContext *codec_ctx, struct setparam_param *param)
{
if (codec_ctx->codec->id == AV_CODEC_ID_JPEG2000) {
log_msg(LOG_LEVEL_WARNING, "[lavc] J2K support is experimental and may be broken!\n");
}
if (!param->thread_mode.empty() && param->thread_mode != "no") {
if (param->thread_mode == "slice") {
// zero should mean count equal to the number of virtual cores
if (codec_ctx->codec->capabilities & AV_CODEC_CAP_SLICE_THREADS) {
codec_ctx->thread_count = 0;
codec_ctx->thread_type = FF_THREAD_SLICE;
} else {
log_msg(LOG_LEVEL_WARNING, "[lavc] Warning: Codec doesn't support slice-based multithreading.\n");
}
} else if (param->thread_mode == "frame") {
if (codec_ctx->codec->capabilities & AV_CODEC_CAP_FRAME_THREADS) {
codec_ctx->thread_count = 0;
codec_ctx->thread_type = FF_THREAD_FRAME;
} else {
log_msg(LOG_LEVEL_WARNING, "[lavc] Warning: Codec doesn't support frame-based multithreading.\n");
}
} else {
log_msg(LOG_LEVEL_ERROR, "[lavc] Warning: unknown thread mode: %s.\n", param->thread_mode.c_str());
}
}
}
static void setparam_jpeg(AVCodecContext *codec_ctx, struct setparam_param *param)
{
if (param->thread_mode == "slice") {
// zero should mean count equal to the number of virtual cores
codec_ctx->thread_count = 0;
codec_ctx->thread_type = FF_THREAD_SLICE;
}
if (av_opt_set(codec_ctx->priv_data, "huffman", "default", 0) != 0) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Warning: Cannot set default Huffman tables.\n");
}
}
ADD_TO_PARAM(lavc_h264_interlaced_dct, "lavc-h264-interlaced-dct", "* lavc-h264-interlaced-dct\n"
" Use interlaced DCT for H.264\n");
static void configure_x264_x265(AVCodecContext *codec_ctx, struct setparam_param *param)
{
const char *tune;
if (codec_ctx->codec->id == AV_CODEC_ID_H264) {
tune = "zerolatency,fastdecode";
} else { // x265 supports only single tune parameter
tune = "zerolatency";
}
int ret = av_opt_set(codec_ctx->priv_data, "tune", tune, 0);
if (ret != 0) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unable to set tune %s.\n", tune);
}
// try to keep frame sizes as even as possible
codec_ctx->rc_max_rate = codec_ctx->bit_rate;
//codec_ctx->rc_min_rate = s->codec_ctx->bit_rate / 4 * 3;
//codec_ctx->rc_buffer_aggressivity = 1.0;
codec_ctx->rc_buffer_size = codec_ctx->rc_max_rate / param->fps * 8; // "emulate" CBR. Note that less than 8 frame sizes causes encoder buffer overflows and artifacts in stream.
codec_ctx->qcompress = 0.0f;
//codec_ctx->qblur = 0.0f;
//codec_ctx->rc_min_vbv_overflow_use = 1.0f;
//codec_ctx->rc_max_available_vbv_use = 1.0f;
codec_ctx->qmin = 0;
codec_ctx->qmax = 69;
codec_ctx->max_qdiff = 69;
//codec_ctx->rc_qsquish = 0;
//codec_ctx->scenechange_threshold = 100;
if (get_commandline_param("lavc-h264-interlaced-dct")) {
// this options increases variance in frame sizes quite a lot
if (param->interlaced) {
codec_ctx->flags |= AV_CODEC_FLAG_INTERLACED_DCT;
}
}
/// turn on periodic intra refresh, unless explicitely disabled
if (!param->no_periodic_intra){
codec_ctx->refs = 1;
if(strncmp(codec_ctx->codec->name, "libx264", strlen("libx264"))){
int ret = av_opt_set(codec_ctx->priv_data, "intra-refresh", "1", 0);
if (ret != 0) {
print_libav_error(LOG_LEVEL_WARNING, "[lavc] Unable to set Intra Refresh", ret);
}
}
}
if(strcmp(codec_ctx->codec->name, "libx265") == 0){
char buf[512] = "";
snprintf(buf, sizeof(buf), "keyint=%d", codec_ctx->gop_size);
if(!param->no_periodic_intra){
strncat(buf, ":intra-refresh=1", sizeof(buf) - strlen(buf) - 1);
}
int ret = av_opt_set(codec_ctx->priv_data, "x265-params", buf, 0);
if (ret != 0) {
print_libav_error(LOG_LEVEL_WARNING, "[lavc] Unable to set x265-params", ret);
}
}
}
static void configure_qsv(AVCodecContext *codec_ctx, struct setparam_param *param)
{
int ret;
ret = av_opt_set(codec_ctx->priv_data, "look_ahead", "0", 0);
if (ret != 0) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unable to set unset look-ahead.\n");
}
if (!param->no_periodic_intra) {
ret = av_opt_set(codec_ctx->priv_data, "int_ref_type", "vertical", 0);
if (ret != 0) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unable to set intra refresh.\n");
}
#if 0
ret = av_opt_set(codec_ctx->priv_data, "int_ref_cycle_size", "100", 0);
if (ret != 0) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unable to set intra refresh size.\n");
}
#endif
}
codec_ctx->rc_max_rate = codec_ctx->bit_rate;
// no look-ahead and rc_max_rate == bit_rate result in use of CBR for QSV
}
static void configure_nvenc(AVCodecContext *codec_ctx, struct setparam_param *param)
{
int ret;
ret = av_opt_set(codec_ctx->priv_data, "rc", DEFAULT_NVENC_RC, 0);
if (ret != 0) { // older FFMPEG had only cbr
log_msg(LOG_LEVEL_WARNING, "[lavc] Cannot set RC %s. Trying cbr.\n", DEFAULT_NVENC_RC);
ret = av_opt_set(codec_ctx->priv_data, "rc", "cbr", 0);
}
if (ret != 0) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unable to set RC.\n");
}
ret = av_opt_set(codec_ctx->priv_data, "spatial_aq", "0", 0);
if (ret != 0) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unable to unset spatial AQ.\n");
}
char gpu[3] = "";
snprintf(gpu, 2, "%d", cuda_devices[0]);
ret = av_opt_set(codec_ctx->priv_data, "gpu", gpu, 0);
if (ret != 0) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unable to set GPU.\n");
}
ret = av_opt_set(codec_ctx->priv_data, "delay", "0", 0);
if (ret != 0) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unable to set delay.\n");
}
ret = av_opt_set(codec_ctx->priv_data, "zerolatency", "1", 0);
if (ret != 0) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unable to set zero latency operation (no reordering delay).\n");
}
codec_ctx->rc_max_rate = codec_ctx->bit_rate;
codec_ctx->rc_buffer_size = codec_ctx->rc_max_rate / param->fps;
}
static void setparam_h264_h265(AVCodecContext *codec_ctx, struct setparam_param *param)
{
if (strncmp(codec_ctx->codec->name, "libx264", strlen("libx264")) == 0 || // libx264 and libx264rgb
strcmp(codec_ctx->codec->name, "libx265") == 0) {
configure_x264_x265(codec_ctx, param);
} else if (regex_match(codec_ctx->codec->name, regex(".*nvenc.*"))) {
configure_nvenc(codec_ctx, param);
} else if (strcmp(codec_ctx->codec->name, "h264_qsv") == 0 ||
strcmp(codec_ctx->codec->name, "hevc_qsv") == 0) {
configure_qsv(codec_ctx, param);
} else {
log_msg(LOG_LEVEL_WARNING, "[lavc] Warning: Unknown encoder %s. Using default configuration values.\n", codec_ctx->codec->name);
}
}
static string get_h264_h265_preset(string const & enc_name, int width, int height, double fps)
{
if (enc_name == "libx264" || enc_name == "libx264rgb") {
if (width <= 1920 && height <= 1080 && fps <= 30) {
return string("veryfast");
} else {
return string("ultrafast");
}
} else if (enc_name == "libx265") {
return string("ultrafast");
} else if (regex_match(enc_name, regex(".*nvenc.*"))) { // so far, there are at least nvenc, nvenc_h264 and h264_nvenc variants
return string(DEFAULT_NVENC_PRESET);
} else if (enc_name == "h264_qsv") {
return string(DEFAULT_QSV_PRESET);
} else {
return {};
}
}
static void setparam_vp8_vp9(AVCodecContext *codec_ctx, struct setparam_param *param)
{
codec_ctx->thread_count = param->cpu_count;
codec_ctx->rc_buffer_size = codec_ctx->bit_rate / param->fps;
//codec_ctx->rc_buffer_aggressivity = 0.5;
if (av_opt_set(codec_ctx->priv_data, "deadline", "realtime", 0) != 0) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unable to set deadline.\n");
}
if (av_opt_set(codec_ctx->priv_data, "cpu-used", "8", 0)) {
log_msg(LOG_LEVEL_WARNING, "[lavc] Unable to set quality/speed ratio modifier.\n");
}
}
static void libavcodec_check_messages(struct state_video_compress_libav *s)
{
struct message *msg;
while ((msg = check_message(&s->module_data))) {
struct msg_change_compress_data *data =
(struct msg_change_compress_data *) msg;
struct response *r;
if (parse_fmt(s, data->config_string) == 0) {
log_msg(LOG_LEVEL_NOTICE, "[Libavcodec] Compression successfully changed.\n");
r = new_response(RESPONSE_OK, NULL);
} else {
log_msg(LOG_LEVEL_ERROR, "[Libavcodec] Unable to change compression!\n");
r = new_response(RESPONSE_INT_SERV_ERR, NULL);
}
memset(&s->saved_desc, 0, sizeof(s->saved_desc));
free_message(msg, r);
}
}
const struct video_compress_info libavcodec_info = {
"libavcodec",
libavcodec_compress_init,
NULL,
libavcodec_compress_tile,
NULL,
NULL,
NULL,
NULL,
get_libavcodec_presets,
};
REGISTER_MODULE(libavcodec, &libavcodec_info, LIBRARY_CLASS_VIDEO_COMPRESS, VIDEO_COMPRESS_ABI_VERSION);
} // end of anonymous namespace
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