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/*
* Copyright (C) 2011 Hendrik Leppkes
* http://www.1f0.de
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "stdafx.h"
#include "lavfutils.h"
extern "C" {
#include "libavcodec/audioconvert.h"
}
#include <sstream>
static int get_bit_rate(AVCodecContext *ctx)
{
int bit_rate;
int bits_per_sample;
switch(ctx->codec_type) {
case AVMEDIA_TYPE_VIDEO:
case AVMEDIA_TYPE_DATA:
case AVMEDIA_TYPE_SUBTITLE:
case AVMEDIA_TYPE_ATTACHMENT:
bit_rate = ctx->bit_rate;
break;
case AVMEDIA_TYPE_AUDIO:
bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
break;
default:
bit_rate = 0;
break;
}
return bit_rate;
}
const char *get_stream_language(const AVStream *pStream)
{
char *lang = NULL;
if (av_metadata_get(pStream->metadata, "language", NULL, 0)) {
lang = av_metadata_get(pStream->metadata, "language", NULL, 0)->value;
}
// Don't bother with undetermined languages (fallback value in some containers)
if(lang && strncmp(lang, "und", 3))
return lang;
return NULL;
}
struct s_id_map {
int id;
const char *name;
};
struct s_id_map nice_codec_names[] = {
// Video
{ CODEC_ID_H264, "h264" }, // XXX: Do not remove, required for custom profile/level formatting
{ CODEC_ID_VC1, "vc-1" }, // XXX: Do not remove, required for custom profile/level formatting
{ CODEC_ID_MPEG2VIDEO, "mpeg2" },
// Audio
{ CODEC_ID_DTS, "dts" },
{ CODEC_ID_AAC_LATM, "aac (latm)" },
// Subs
{ CODEC_ID_TEXT, "txt" },
{ CODEC_ID_MOV_TEXT, "tx3g" },
{ CODEC_ID_SRT, "srt" },
{ CODEC_ID_HDMV_PGS_SUBTITLE, "pgs" },
{ CODEC_ID_DVD_SUBTITLE, "vobsub" },
{ CODEC_ID_DVB_SUBTITLE, "dvbsub" },
{ CODEC_ID_SSA, "ssa/ass" },
{ CODEC_ID_XSUB, "xsub" },
};
// Uppercase the given string
static std::string tolower(const char *str) {
size_t len = strlen(str);
std::string ret(len, char());
for (size_t i = 0; i < len; ++i) {
ret[i] = (str[i] <= 'Z' && str[i] >= 'A') ? str[i]+('a'-'A') : str[i];
}
return ret;
}
std::string get_codec_name(AVCodecContext *pCodecCtx)
{
CodecID id = pCodecCtx->codec_id;
// Grab the codec
AVCodec *p = avcodec_find_decoder(id);
const char *profile = p ? av_get_profile_name(p, pCodecCtx->profile) : NULL;
std::ostringstream codec_name;
const char *nice_name = NULL;
for (int i = 0; i < countof(nice_codec_names); ++i)
{
if (nice_codec_names[i].id == id) {
nice_name = nice_codec_names[i].name;
break;
}
}
if (id == CODEC_ID_DTS && pCodecCtx->codec_tag == 0xA2) {
profile = "DTS Express";
}
if (id == CODEC_ID_H264 && profile) {
codec_name << nice_name << " " << tolower(profile);
if (pCodecCtx->level && pCodecCtx->level != FF_LEVEL_UNKNOWN && pCodecCtx->level < 1000) {
char l_buf[5];
sprintf_s(l_buf, "%.1f", pCodecCtx->level / 10.0);
codec_name << " L" << l_buf;
}
} else if (id == CODEC_ID_VC1 && profile) {
codec_name << nice_name << " " << tolower(profile);
if (pCodecCtx->level != FF_LEVEL_UNKNOWN) {
codec_name << " L" << pCodecCtx->level;
}
} else if (id == CODEC_ID_DTS && profile) {
codec_name << tolower(profile);
} else if (nice_name) {
codec_name << nice_name;
if (profile)
codec_name << " " << tolower(profile);
} else if (p && p->name) {
codec_name << p->name;
if (profile)
codec_name << " " << tolower(profile);
} else if (pCodecCtx->codec_name[0] != '\0') {
codec_name << pCodecCtx->codec_name;
} else {
/* output avi tags */
char buf[32];
av_get_codec_tag_string(buf, sizeof(buf), pCodecCtx->codec_tag);
codec_name << buf;
sprintf_s(buf, "0x%04X", pCodecCtx->codec_tag);
codec_name << " / " << buf;
}
return codec_name.str();
}
#define SUPPORTED_FLAGS (AV_DISPOSITION_FORCED|AV_DISPOSITION_DEFAULT|AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED|LAVF_DISPOSITION_SUB_STREAM|LAVF_DISPOSITION_SECONDARY_AUDIO)
static std::string format_flags(int flags){
std::ostringstream out;
#define FLAG_TAG(f, s) if(flags & f) { if(!first) out << ","; out << s; first = false; }
if (flags & SUPPORTED_FLAGS) {
bool first = true;
out << " [";
FLAG_TAG(AV_DISPOSITION_DEFAULT, "default");
FLAG_TAG(AV_DISPOSITION_FORCED, "forced");
FLAG_TAG(AV_DISPOSITION_HEARING_IMPAIRED, "hearing impaired");
FLAG_TAG(AV_DISPOSITION_VISUAL_IMPAIRED, "visual impaired");
FLAG_TAG(LAVF_DISPOSITION_SUB_STREAM, "sub");
FLAG_TAG(LAVF_DISPOSITION_SECONDARY_AUDIO, "secondary");
out << "]";
}
return out.str();
}
static bool show_sample_fmt(CodecID codec_id) {
// PCM Codecs
if (codec_id >= 0x10000 && codec_id < 0x12000) {
return true;
}
// Lossless Codecs
if (codec_id == CODEC_ID_MLP
|| codec_id == CODEC_ID_TRUEHD
|| codec_id == CODEC_ID_FLAC
|| codec_id == CODEC_ID_WMALOSSLESS
|| codec_id == CODEC_ID_WAVPACK
|| codec_id == CODEC_ID_MP4ALS
|| codec_id == CODEC_ID_ALAC) {
return true;
}
return false;
}
HRESULT lavf_describe_stream(AVStream *pStream, WCHAR **ppszName)
{
CheckPointer(pStream, E_POINTER);
CheckPointer(ppszName, E_POINTER);
AVCodecContext *enc = pStream->codec;
std::string codec_name = get_codec_name(enc);
const char *lang = get_stream_language(pStream);
std::string sLanguage;
if(lang) {
sLanguage = ProbeLangForLanguage(lang);
if (sLanguage.empty()) {
sLanguage = lang;
}
}
char *title = NULL;
if (av_metadata_get(pStream->metadata, "title", NULL, 0)) {
title = av_metadata_get(pStream->metadata, "title", NULL, 0)->value;
} else if (av_metadata_get(pStream->metadata, "handler_name", NULL, 0)) {
title = av_metadata_get(pStream->metadata, "handler_name", NULL, 0)->value;
if (strcmp(title, "GPAC ISO Video Handler") == 0 || strcmp(title, "GPAC ISO Audio Handler") == 0 || strcmp(title, "GPAC Streaming Text Handler") == 0)
title = NULL;
}
// Empty titles are rather useless
if (title && strlen(title) == 0)
title = NULL;
int bitrate = get_bit_rate(enc);
std::ostringstream buf;
switch(enc->codec_type) {
case AVMEDIA_TYPE_VIDEO:
buf << "V: ";
// Title/Language
if (title && lang) {
buf << title << " [" << lang << "] (";
} else if (title) {
// Print either title or lang
buf << title << " (";
} else if (lang) {
buf << sLanguage << " [" << lang << "] (";
}
// Codec
buf << codec_name;
// Pixel Format
if (enc->pix_fmt != PIX_FMT_NONE) {
buf << ", " << avcodec_get_pix_fmt_name(enc->pix_fmt);
}
// Dimensions
if (enc->width) {
buf << ", " << enc->width << "x" << enc->height;
}
// Bitrate
if (bitrate > 0) {
buf << ", " << (bitrate / 1000) << " kb/s";
}
// Closing tag
if (title || lang) {
buf << ")";
}
buf << format_flags(pStream->disposition);
break;
case AVMEDIA_TYPE_AUDIO:
buf << "A: ";
// Title/Language
if (title && lang) {
buf << title << " [" << lang << "] (";
} else if (title) {
// Print either title or lang
buf << title << " (";
} else if (lang) {
buf << sLanguage << " [" << lang << "] (";
}
// Codec
buf << codec_name;
// Sample Rate
if (enc->sample_rate) {
buf << ", " << enc->sample_rate << " Hz";
}
if (enc->channels) {
// Get channel layout
char channel[32];
av_get_channel_layout_string(channel, 32, enc->channels, enc->channel_layout);
buf << ", " << channel;
}
// Sample Format
if (show_sample_fmt(enc->codec_id) && get_bits_per_sample(enc)) {
if (enc->sample_fmt == AV_SAMPLE_FMT_FLT || enc->sample_fmt == AV_SAMPLE_FMT_DBL) {
buf << ", fp";
} else {
buf << ", s";
}
buf << get_bits_per_sample(enc);
}
// Bitrate
if (bitrate > 0) {
buf << ", " << (bitrate / 1000) << " kb/s";
}
// Closing tag
if (title || lang) {
buf << ")";
}
// Flags
buf << format_flags(pStream->disposition);
break;
case AVMEDIA_TYPE_SUBTITLE:
buf << "S: ";
// Title/Language
if (title && lang) {
buf << title << " [" << lang << "] (";
} else if (title) {
// Print either title or lang
buf << title << " (";
} else if (lang) {
buf << sLanguage << " [" << lang << "] (";
}
// Codec
buf << codec_name;
if (title || lang) {
buf << ")";
}
// Subtitle flags
buf << format_flags(pStream->disposition);
break;
default:
buf << "Unknown: Stream #" << pStream->index;
break;
}
std::string info = buf.str();
size_t len = info.size() + 1;
*ppszName = (WCHAR *)CoTaskMemAlloc(len * sizeof(WCHAR));
MultiByteToWideChar(CP_UTF8, 0, info.c_str(), -1, *ppszName, (int)len);
return S_OK;
}
#ifdef DEBUG
extern "C" {
#define LAVF_PARSE_TYPE(x) case x: return #x;
const char *lavf_get_parsing_string(enum AVStreamParseType parsing)
{
switch (parsing) {
LAVF_PARSE_TYPE(AVSTREAM_PARSE_NONE);
LAVF_PARSE_TYPE(AVSTREAM_PARSE_FULL);
LAVF_PARSE_TYPE(AVSTREAM_PARSE_HEADERS);
LAVF_PARSE_TYPE(AVSTREAM_PARSE_TIMESTAMPS);
LAVF_PARSE_TYPE(AVSTREAM_PARSE_FULL_ONCE);
};
return "unknown";
};
#define LOG_BUF_LEN 2048
void lavf_log_callback(void* ptr, int level, const char* fmt, va_list vl)
{
static int print_prefix=1;
static int count;
static char line[LOG_BUF_LEN], prev[LOG_BUF_LEN];
if(level>AV_LOG_VERBOSE)
return;
AVClass* avc= ptr ? *(AVClass**)ptr : NULL;
line[0]=0;
if(print_prefix && avc) {
if(avc->version >= (50<<16 | 15<<8 | 3) && avc->parent_log_context_offset){
AVClass** parent= *(AVClass***)(((uint8_t*)ptr) + avc->parent_log_context_offset);
if(parent && *parent){
sprintf_s(line, LOG_BUF_LEN, "[%s @ %p] ", (*parent)->item_name(parent), parent);
}
}
sprintf_s(line + strlen(line), LOG_BUF_LEN - strlen(line), "[%s @ %p] ", avc->item_name(ptr), ptr);
}
vsnprintf(line + strlen(line), LOG_BUF_LEN - strlen(line), fmt, vl);
print_prefix= line[strlen(line)-1] == '\n';
if(print_prefix && !strcmp(line, prev)){
count++;
return;
}
if(count>0){
fprintf(stderr, " Last message repeated %d times\n", count);
count=0;
}
if (line[strlen(line)-1] == '\n') {
line[strlen(line)-1] = 0;
}
DbgLog((LOG_CUSTOM1, level, L"%S", line));
strncpy_s(prev, LOG_BUF_LEN, line, _TRUNCATE);
}
}
#endif
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