--- a/hedgewars/avwrapper.c Mon Jun 17 10:48:50 2013 -0400
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,509 +0,0 @@
-/*
- * Hedgewars, a free turn based strategy game
- * Copyright (c) 2004-2013 Andrey Korotaev <unC0Rr@gmail.com>
- *
- * 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 <stdlib.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <string.h>
-#include <stdarg.h>
-#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);
-}