diff -r 8ce66f1106f1 -r dcdfcddf37ee hedgewars/avwrapper.c --- a/hedgewars/avwrapper.c Tue Mar 19 16:47:53 2013 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,509 +0,0 @@ -/* - * Hedgewars, a free turn based strategy game - * Copyright (c) 2004-2012 Andrey Korotaev - * - * 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; version 2 of the License - * - * 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 - */ - -#include -#include -#include -#include -#include -#include "libavformat/avformat.h" -#include "libavutil/mathematics.h" - -#ifndef AVIO_FLAG_WRITE -#define AVIO_FLAG_WRITE AVIO_WRONLY -#endif - -static AVFormatContext* g_pContainer; -static AVOutputFormat* g_pFormat; -static AVStream* g_pAStream; -static AVStream* g_pVStream; -static AVFrame* g_pAFrame; -static AVFrame* g_pVFrame; -static AVCodec* g_pACodec; -static AVCodec* g_pVCodec; -static AVCodecContext* g_pAudio; -static AVCodecContext* g_pVideo; - -static int g_Width, g_Height; -static uint32_t g_Frequency, g_Channels; -static int g_VQuality; -static AVRational g_Framerate; - -static FILE* g_pSoundFile; -static int16_t* g_pSamples; -static int g_NumSamples; - - -#if LIBAVCODEC_VERSION_MAJOR < 54 -#define OUTBUFFER_SIZE 200000 -static uint8_t g_OutBuffer[OUTBUFFER_SIZE]; -#endif - -// pointer to function from hwengine (uUtils.pas) -static void (*AddFileLogRaw)(const char* pString); - -static void FatalError(const char* pFmt, ...) -{ - char Buffer[1024]; - va_list VaArgs; - - va_start(VaArgs, pFmt); - vsnprintf(Buffer, 1024, pFmt, VaArgs); - va_end(VaArgs); - - AddFileLogRaw("Error in av-wrapper: "); - AddFileLogRaw(Buffer); - AddFileLogRaw("\n"); - exit(1); -} - -// Function to be called from libav for logging. -// Note: libav can call LogCallback from different threads -// (there is mutex in AddFileLogRaw). -static void LogCallback(void* p, int Level, const char* pFmt, va_list VaArgs) -{ - char Buffer[1024]; - - vsnprintf(Buffer, 1024, pFmt, VaArgs); - AddFileLogRaw(Buffer); -} - -static void Log(const char* pFmt, ...) -{ - char Buffer[1024]; - va_list VaArgs; - - va_start(VaArgs, pFmt); - vsnprintf(Buffer, 1024, pFmt, VaArgs); - va_end(VaArgs); - - AddFileLogRaw(Buffer); -} - -static void AddAudioStream() -{ -#if LIBAVFORMAT_VERSION_MAJOR >= 53 - g_pAStream = avformat_new_stream(g_pContainer, g_pACodec); -#else - g_pAStream = av_new_stream(g_pContainer, 1); -#endif - if(!g_pAStream) - { - Log("Could not allocate audio stream\n"); - return; - } - g_pAStream->id = 1; - - g_pAudio = g_pAStream->codec; - - avcodec_get_context_defaults3(g_pAudio, g_pACodec); - g_pAudio->codec_id = g_pACodec->id; - - // put parameters - g_pAudio->sample_fmt = AV_SAMPLE_FMT_S16; - g_pAudio->sample_rate = g_Frequency; - g_pAudio->channels = g_Channels; - - // set quality - g_pAudio->bit_rate = 160000; - - // for codecs that support variable bitrate use it, it should be better - g_pAudio->flags |= CODEC_FLAG_QSCALE; - g_pAudio->global_quality = 1*FF_QP2LAMBDA; - - // some formats want stream headers to be separate - if (g_pFormat->flags & AVFMT_GLOBALHEADER) - g_pAudio->flags |= CODEC_FLAG_GLOBAL_HEADER; - - // open it -#if LIBAVCODEC_VERSION_MAJOR >= 53 - if (avcodec_open2(g_pAudio, g_pACodec, NULL) < 0) -#else - if (avcodec_open(g_pAudio, g_pACodec) < 0) -#endif - { - Log("Could not open audio codec %s\n", g_pACodec->long_name); - return; - } - -#if LIBAVCODEC_VERSION_MAJOR >= 54 - if (g_pACodec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE) -#else - if (g_pAudio->frame_size == 0) -#endif - g_NumSamples = 4096; - else - g_NumSamples = g_pAudio->frame_size; - g_pSamples = (int16_t*)av_malloc(g_NumSamples*g_Channels*sizeof(int16_t)); - g_pAFrame = avcodec_alloc_frame(); - if (!g_pAFrame) - { - Log("Could not allocate frame\n"); - return; - } -} - -// returns non-zero if there is more sound -static int WriteAudioFrame() -{ - if (!g_pAStream) - return 0; - - AVPacket Packet = { 0 }; - av_init_packet(&Packet); - - int NumSamples = fread(g_pSamples, 2*g_Channels, g_NumSamples, g_pSoundFile); - -#if LIBAVCODEC_VERSION_MAJOR >= 53 - AVFrame* pFrame = NULL; - if (NumSamples > 0) - { - g_pAFrame->nb_samples = NumSamples; - avcodec_fill_audio_frame(g_pAFrame, g_Channels, AV_SAMPLE_FMT_S16, - (uint8_t*)g_pSamples, NumSamples*2*g_Channels, 1); - pFrame = g_pAFrame; - } - // when NumSamples == 0 we still need to call encode_audio2 to flush - int got_packet; - if (avcodec_encode_audio2(g_pAudio, &Packet, pFrame, &got_packet) != 0) - FatalError("avcodec_encode_audio2 failed"); - if (!got_packet) - return 0; -#else - if (NumSamples == 0) - return 0; - int BufferSize = OUTBUFFER_SIZE; - if (g_pAudio->frame_size == 0) - BufferSize = NumSamples*g_Channels*2; - Packet.size = avcodec_encode_audio(g_pAudio, g_OutBuffer, BufferSize, g_pSamples); - if (Packet.size == 0) - return 1; - if (g_pAudio->coded_frame && g_pAudio->coded_frame->pts != AV_NOPTS_VALUE) - Packet.pts = av_rescale_q(g_pAudio->coded_frame->pts, g_pAudio->time_base, g_pAStream->time_base); - Packet.flags |= AV_PKT_FLAG_KEY; - Packet.data = g_OutBuffer; -#endif - - // Write the compressed frame to the media file. - Packet.stream_index = g_pAStream->index; - if (av_interleaved_write_frame(g_pContainer, &Packet) != 0) - FatalError("Error while writing audio frame"); - return 1; -} - -// add a video output stream -static void AddVideoStream() -{ -#if LIBAVFORMAT_VERSION_MAJOR >= 53 - g_pVStream = avformat_new_stream(g_pContainer, g_pVCodec); -#else - g_pVStream = av_new_stream(g_pContainer, 0); -#endif - if (!g_pVStream) - FatalError("Could not allocate video stream"); - - g_pVideo = g_pVStream->codec; - - avcodec_get_context_defaults3(g_pVideo, g_pVCodec); - g_pVideo->codec_id = g_pVCodec->id; - - // put parameters - // resolution must be a multiple of two - g_pVideo->width = g_Width & ~1; // make even (dimensions should be even) - g_pVideo->height = g_Height & ~1; // make even - /* time base: this is the fundamental unit of time (in seconds) in terms - of which frame timestamps are represented. for fixed-fps content, - timebase should be 1/framerate and timestamp increments should be - identically 1. */ - g_pVideo->time_base.den = g_Framerate.num; - g_pVideo->time_base.num = g_Framerate.den; - //g_pVideo->gop_size = 12; /* emit one intra frame every twelve frames at most */ - g_pVideo->pix_fmt = PIX_FMT_YUV420P; - - // set quality - if (g_VQuality > 100) - g_pVideo->bit_rate = g_VQuality; - else - { - g_pVideo->flags |= CODEC_FLAG_QSCALE; - g_pVideo->global_quality = g_VQuality*FF_QP2LAMBDA; - } - - // some formats want stream headers to be separate - if (g_pFormat->flags & AVFMT_GLOBALHEADER) - g_pVideo->flags |= CODEC_FLAG_GLOBAL_HEADER; - -#if LIBAVCODEC_VERSION_MAJOR < 53 - // for some versions of ffmpeg x264 options must be set explicitly - if (strcmp(g_pVCodec->name, "libx264") == 0) - { - g_pVideo->coder_type = FF_CODER_TYPE_AC; - g_pVideo->flags |= CODEC_FLAG_LOOP_FILTER; - g_pVideo->crf = 23; - g_pVideo->thread_count = 3; - g_pVideo->me_cmp = FF_CMP_CHROMA; - g_pVideo->partitions = X264_PART_I8X8 | X264_PART_I4X4 | X264_PART_P8X8 | X264_PART_B8X8; - g_pVideo->me_method = ME_HEX; - g_pVideo->me_subpel_quality = 7; - g_pVideo->me_range = 16; - g_pVideo->gop_size = 250; - g_pVideo->keyint_min = 25; - g_pVideo->scenechange_threshold = 40; - g_pVideo->i_quant_factor = 0.71; - g_pVideo->b_frame_strategy = 1; - g_pVideo->qcompress = 0.6; - g_pVideo->qmin = 10; - g_pVideo->qmax = 51; - g_pVideo->max_qdiff = 4; - g_pVideo->max_b_frames = 3; - g_pVideo->refs = 3; - g_pVideo->directpred = 1; - g_pVideo->trellis = 1; - g_pVideo->flags2 = CODEC_FLAG2_BPYRAMID | CODEC_FLAG2_MIXED_REFS | CODEC_FLAG2_WPRED | CODEC_FLAG2_8X8DCT | CODEC_FLAG2_FASTPSKIP; - g_pVideo->weighted_p_pred = 2; - } -#endif - - // open the codec -#if LIBAVCODEC_VERSION_MAJOR >= 53 - AVDictionary* pDict = NULL; - if (strcmp(g_pVCodec->name, "libx264") == 0) - av_dict_set(&pDict, "preset", "medium", 0); - - if (avcodec_open2(g_pVideo, g_pVCodec, &pDict) < 0) -#else - if (avcodec_open(g_pVideo, g_pVCodec) < 0) -#endif - FatalError("Could not open video codec %s", g_pVCodec->long_name); - - g_pVFrame = avcodec_alloc_frame(); - if (!g_pVFrame) - FatalError("Could not allocate frame"); - - g_pVFrame->linesize[0] = g_Width; - g_pVFrame->linesize[1] = g_Width/2; - g_pVFrame->linesize[2] = g_Width/2; - g_pVFrame->linesize[3] = 0; -} - -static int WriteFrame(AVFrame* pFrame) -{ - double AudioTime, VideoTime; - - // write interleaved audio frame - if (g_pAStream) - { - VideoTime = (double)g_pVStream->pts.val*g_pVStream->time_base.num/g_pVStream->time_base.den; - do - AudioTime = (double)g_pAStream->pts.val*g_pAStream->time_base.num/g_pAStream->time_base.den; - while (AudioTime < VideoTime && WriteAudioFrame()); - } - - if (!g_pVStream) - return 0; - - AVPacket Packet; - av_init_packet(&Packet); - Packet.data = NULL; - Packet.size = 0; - - g_pVFrame->pts++; - if (g_pFormat->flags & AVFMT_RAWPICTURE) - { - /* raw video case. The API will change slightly in the near - future for that. */ - Packet.flags |= AV_PKT_FLAG_KEY; - Packet.stream_index = g_pVStream->index; - Packet.data = (uint8_t*)pFrame; - Packet.size = sizeof(AVPicture); - - if (av_interleaved_write_frame(g_pContainer, &Packet) != 0) - FatalError("Error while writing video frame"); - return 0; - } - else - { -#if LIBAVCODEC_VERSION_MAJOR >= 54 - int got_packet; - if (avcodec_encode_video2(g_pVideo, &Packet, pFrame, &got_packet) < 0) - FatalError("avcodec_encode_video2 failed"); - if (!got_packet) - return 0; - - if (Packet.pts != AV_NOPTS_VALUE) - Packet.pts = av_rescale_q(Packet.pts, g_pVideo->time_base, g_pVStream->time_base); - if (Packet.dts != AV_NOPTS_VALUE) - Packet.dts = av_rescale_q(Packet.dts, g_pVideo->time_base, g_pVStream->time_base); -#else - Packet.size = avcodec_encode_video(g_pVideo, g_OutBuffer, OUTBUFFER_SIZE, pFrame); - if (Packet.size < 0) - FatalError("avcodec_encode_video failed"); - if (Packet.size == 0) - return 0; - - if( g_pVideo->coded_frame->pts != AV_NOPTS_VALUE) - Packet.pts = av_rescale_q(g_pVideo->coded_frame->pts, g_pVideo->time_base, g_pVStream->time_base); - if( g_pVideo->coded_frame->key_frame ) - Packet.flags |= AV_PKT_FLAG_KEY; - Packet.data = g_OutBuffer; -#endif - // write the compressed frame in the media file - Packet.stream_index = g_pVStream->index; - if (av_interleaved_write_frame(g_pContainer, &Packet) != 0) - FatalError("Error while writing video frame"); - - return 1; - } -} - -void AVWrapper_WriteFrame(uint8_t* pY, uint8_t* pCb, uint8_t* pCr) -{ - g_pVFrame->data[0] = pY; - g_pVFrame->data[1] = pCb; - g_pVFrame->data[2] = pCr; - WriteFrame(g_pVFrame); -} - -void AVWrapper_Init( - void (*pAddFileLogRaw)(const char*), - const char* pFilename, - const char* pDesc, - const char* pSoundFile, - const char* pFormatName, - const char* pVCodecName, - const char* pACodecName, - int Width, int Height, - int FramerateNum, int FramerateDen, - int VQuality) -{ - AddFileLogRaw = pAddFileLogRaw; - av_log_set_callback( &LogCallback ); - - g_Width = Width; - g_Height = Height; - g_Framerate.num = FramerateNum; - g_Framerate.den = FramerateDen; - g_VQuality = VQuality; - - // initialize libav and register all codecs and formats - av_register_all(); - - // find format - g_pFormat = av_guess_format(pFormatName, NULL, NULL); - if (!g_pFormat) - FatalError("Format \"%s\" was not found", pFormatName); - - // allocate the output media context - g_pContainer = avformat_alloc_context(); - if (!g_pContainer) - FatalError("Could not allocate output context"); - - g_pContainer->oformat = g_pFormat; - - // store description of file - av_dict_set(&g_pContainer->metadata, "comment", pDesc, 0); - - // append extesnion to filename - char ext[16]; - strncpy(ext, g_pFormat->extensions, 16); - ext[15] = 0; - ext[strcspn(ext,",")] = 0; - snprintf(g_pContainer->filename, sizeof(g_pContainer->filename), "%s.%s", pFilename, ext); - - // find codecs - g_pVCodec = avcodec_find_encoder_by_name(pVCodecName); - g_pACodec = avcodec_find_encoder_by_name(pACodecName); - - // add audio and video stream to container - g_pVStream = NULL; - g_pAStream = NULL; - - if (g_pVCodec) - AddVideoStream(); - else - Log("Video codec \"%s\" was not found; video will be ignored.\n", pVCodecName); - - if (g_pACodec) - { - g_pSoundFile = fopen(pSoundFile, "rb"); - if (g_pSoundFile) - { - fread(&g_Frequency, 4, 1, g_pSoundFile); - fread(&g_Channels, 4, 1, g_pSoundFile); - AddAudioStream(); - } - else - Log("Could not open %s\n", pSoundFile); - } - else - Log("Audio codec \"%s\" was not found; audio will be ignored.\n", pACodecName); - - if (!g_pAStream && !g_pVStream) - FatalError("No video, no audio, aborting..."); - - // write format info to log - av_dump_format(g_pContainer, 0, g_pContainer->filename, 1); - - // open the output file, if needed - if (!(g_pFormat->flags & AVFMT_NOFILE)) - { - if (avio_open(&g_pContainer->pb, g_pContainer->filename, AVIO_FLAG_WRITE) < 0) - FatalError("Could not open output file (%s)", g_pContainer->filename); - } - - // write the stream header, if any - avformat_write_header(g_pContainer, NULL); - - g_pVFrame->pts = -1; -} - -void AVWrapper_Close() -{ - // output buffered frames - if (g_pVCodec->capabilities & CODEC_CAP_DELAY) - while( WriteFrame(NULL) ); - // output any remaining audio - while( WriteAudioFrame() ); - - // write the trailer, if any. - av_write_trailer(g_pContainer); - - // close the output file - if (!(g_pFormat->flags & AVFMT_NOFILE)) - avio_close(g_pContainer->pb); - - // free everything - if (g_pVStream) - { - avcodec_close(g_pVideo); - av_free(g_pVideo); - av_free(g_pVStream); - av_free(g_pVFrame); - } - if (g_pAStream) - { - avcodec_close(g_pAudio); - av_free(g_pAudio); - av_free(g_pAStream); - av_free(g_pAFrame); - av_free(g_pSamples); - fclose(g_pSoundFile); - } - - av_free(g_pContainer); -}