author | Stepan777 <stepik-777@mail.ru> |
Sun, 24 Jun 2012 21:15:20 +0400 | |
changeset 7282 | c65992e2d794 |
parent 7280 | fd707afbc3a2 |
child 7306 | 3cff5c769509 |
permissions | -rw-r--r-- |
7180 | 1 |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <stdint.h> |
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#include <string.h> |
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#include <stdarg.h> |
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#include "libavformat/avformat.h" |
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static AVFormatContext* g_pContainer; |
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static AVOutputFormat* g_pFormat; |
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static AVStream* g_pAStream; |
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static AVStream* g_pVStream; |
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static AVFrame* g_pAFrame; |
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static AVFrame* g_pVFrame; |
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static AVCodec* g_pACodec; |
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static AVCodec* g_pVCodec; |
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static AVCodecContext* g_pAudio; |
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static AVCodecContext* g_pVideo; |
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static int g_Width, g_Height; |
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static uint32_t g_Frequency, g_Channels; |
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static int g_VQuality, g_AQuality; |
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static AVRational g_Framerate; |
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static const char* g_pPreset; |
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static FILE* g_pSoundFile; |
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static int16_t* g_pSamples; |
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static int g_NumSamples; |
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/* |
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Initially I wrote code for latest ffmpeg, but on Linux (Ubuntu) |
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only older version is available from repository. That's why you see here |
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all of this #if LIBAVCODEC_VERSION_MAJOR < 54. |
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Actually, it may be possible to remove code for newer version |
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and use only code for older version. |
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*/ |
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#if LIBAVCODEC_VERSION_MAJOR < 54 |
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#define OUTBUFFER_SIZE 200000 |
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static uint8_t g_OutBuffer[OUTBUFFER_SIZE]; |
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#endif |
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// pointer to function from hwengine (uUtils.pas) |
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static void (*AddFileLogRaw)(const char* pString); |
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static void FatalError(const char* pFmt, ...) |
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{ |
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const char Buffer[1024]; |
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va_list VaArgs; |
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va_start(VaArgs, pFmt); |
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vsnprintf(Buffer, 1024, pFmt, VaArgs); |
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va_end(VaArgs); |
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AddFileLogRaw("Error in av-wrapper: "); |
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AddFileLogRaw(Buffer); |
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AddFileLogRaw("\n"); |
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exit(1); |
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} |
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// Function to be called from libav for logging. |
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// Note: libav can call LogCallback from different threads |
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// (there is mutex in AddFileLogRaw). |
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static void LogCallback(void* p, int Level, const char* pFmt, va_list VaArgs) |
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{ |
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const char Buffer[1024]; |
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vsnprintf(Buffer, 1024, pFmt, VaArgs); |
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AddFileLogRaw(Buffer); |
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} |
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static void Log(const char* pFmt, ...) |
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{ |
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const char Buffer[1024]; |
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va_list VaArgs; |
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va_start(VaArgs, pFmt); |
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vsnprintf(Buffer, 1024, pFmt, VaArgs); |
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va_end(VaArgs); |
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AddFileLogRaw(Buffer); |
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} |
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static void AddAudioStream() |
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{ |
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#if LIBAVFORMAT_VERSION_MAJOR >= 54 |
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g_pAStream = avformat_new_stream(g_pContainer, g_pACodec); |
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#else |
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g_pAStream = av_new_stream(g_pContainer, 1); |
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#endif |
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if(!g_pAStream) |
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Stepan777 <stepik-777@mail.ru>
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{ |
fd707afbc3a2
pagevideos is now much better that before:
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parents:
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Log("Could not allocate audio stream"); |
fd707afbc3a2
pagevideos is now much better that before:
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parents:
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return; |
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} |
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g_pAStream->id = 1; |
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g_pAudio = g_pAStream->codec; |
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avcodec_get_context_defaults3(g_pAudio, g_pACodec); |
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g_pAudio->codec_id = g_pACodec->id; |
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// put parameters |
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g_pAudio->sample_fmt = AV_SAMPLE_FMT_S16; |
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g_pAudio->sample_rate = g_Frequency; |
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g_pAudio->channels = g_Channels; |
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// set quality |
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if (g_AQuality > 100) |
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g_pAudio->bit_rate = g_AQuality; |
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else |
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{ |
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g_pAudio->flags |= CODEC_FLAG_QSCALE; |
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g_pAudio->global_quality = g_AQuality*FF_QP2LAMBDA; |
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} |
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// some formats want stream headers to be separate |
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if (g_pFormat->flags & AVFMT_GLOBALHEADER) |
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g_pAudio->flags |= CODEC_FLAG_GLOBAL_HEADER; |
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// open it |
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if (avcodec_open2(g_pAudio, g_pACodec, NULL) < 0) |
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pagevideos is now much better that before:
Stepan777 <stepik-777@mail.ru>
parents:
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{ |
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parents:
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Log("Could not open audio codec %s", g_pACodec->long_name); |
fd707afbc3a2
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return; |
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} |
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#if LIBAVCODEC_VERSION_MAJOR >= 54 |
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if (g_pACodec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE) |
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#else |
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if (g_pAudio->frame_size == 0) |
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#endif |
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g_NumSamples = 4096; |
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else |
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g_NumSamples = g_pAudio->frame_size; |
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g_pSamples = (int16_t*)av_malloc(g_NumSamples*g_Channels*sizeof(int16_t)); |
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g_pAFrame = avcodec_alloc_frame(); |
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if (!g_pAFrame) |
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Stepan777 <stepik-777@mail.ru>
parents:
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{ |
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Log("Could not allocate frame"); |
fd707afbc3a2
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return; |
fd707afbc3a2
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} |
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} |
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// returns non-zero if there is more sound |
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static int WriteAudioFrame() |
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{ |
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if (!g_pAStream) |
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return 0; |
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AVPacket Packet = { 0 }; |
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av_init_packet(&Packet); |
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int NumSamples = fread(g_pSamples, 2*g_Channels, g_NumSamples, g_pSoundFile); |
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#if LIBAVCODEC_VERSION_MAJOR >= 54 |
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AVFrame* pFrame = NULL; |
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if (NumSamples > 0) |
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{ |
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g_pAFrame->nb_samples = NumSamples; |
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avcodec_fill_audio_frame(g_pAFrame, g_Channels, AV_SAMPLE_FMT_S16, |
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(uint8_t*)g_pSamples, NumSamples*2*g_Channels, 1); |
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pFrame = g_pAFrame; |
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} |
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// when NumSamples == 0 we still need to call encode_audio2 to flush |
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int got_packet; |
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if (avcodec_encode_audio2(g_pAudio, &Packet, pFrame, &got_packet) != 0) |
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FatalError("avcodec_encode_audio2 failed"); |
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if (!got_packet) |
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return 0; |
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#else |
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if (NumSamples == 0) |
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return 0; |
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int BufferSize = OUTBUFFER_SIZE; |
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if (g_pAudio->frame_size == 0) |
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BufferSize = NumSamples*g_Channels*2; |
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Packet.size = avcodec_encode_audio(g_pAudio, g_OutBuffer, BufferSize, g_pSamples); |
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if (Packet.size == 0) |
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return 1; |
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if (g_pAudio->coded_frame && g_pAudio->coded_frame->pts != AV_NOPTS_VALUE) |
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Packet.pts = av_rescale_q(g_pAudio->coded_frame->pts, g_pAudio->time_base, g_pAStream->time_base); |
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Packet.flags |= AV_PKT_FLAG_KEY; |
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Packet.data = g_OutBuffer; |
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#endif |
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// Write the compressed frame to the media file. |
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Packet.stream_index = g_pAStream->index; |
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if (av_interleaved_write_frame(g_pContainer, &Packet) != 0) |
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FatalError("Error while writing audio frame"); |
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return 1; |
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} |
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// add a video output stream |
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static void AddVideoStream() |
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{ |
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#if LIBAVFORMAT_VERSION_MAJOR >= 54 |
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g_pVStream = avformat_new_stream(g_pContainer, g_pVCodec); |
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#else |
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g_pVStream = av_new_stream(g_pContainer, 0); |
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200 |
#endif |
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if (!g_pVStream) |
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FatalError("Could not allocate video stream"); |
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204 |
g_pVideo = g_pVStream->codec; |
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avcodec_get_context_defaults3(g_pVideo, g_pVCodec); |
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g_pVideo->codec_id = g_pVCodec->id; |
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// put parameters |
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// resolution must be a multiple of two |
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g_pVideo->width = g_Width & ~1; // make even (dimensions should be even) |
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correctly fix odd dimensions (it was incorrectly fixed in previous commit)
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g_pVideo->height = g_Height & ~1; // make even |
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/* time base: this is the fundamental unit of time (in seconds) in terms |
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of which frame timestamps are represented. for fixed-fps content, |
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timebase should be 1/framerate and timestamp increments should be |
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identically 1. */ |
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g_pVideo->time_base.den = g_Framerate.num; |
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g_pVideo->time_base.num = g_Framerate.den; |
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//g_pVideo->gop_size = 12; /* emit one intra frame every twelve frames at most */ |
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g_pVideo->pix_fmt = PIX_FMT_YUV420P; |
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// set quality |
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if (g_VQuality > 100) |
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g_pVideo->bit_rate = g_VQuality; |
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else |
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{ |
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g_pVideo->flags |= CODEC_FLAG_QSCALE; |
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g_pVideo->global_quality = g_VQuality*FF_QP2LAMBDA; |
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} |
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AVDictionary* pDict = NULL; |
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if (strcmp(g_pVCodec->name, "libx264") == 0) |
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av_dict_set(&pDict, "preset", g_pPreset, 0); |
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// some formats want stream headers to be separate |
236 |
if (g_pFormat->flags & AVFMT_GLOBALHEADER) |
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237 |
g_pVideo->flags |= CODEC_FLAG_GLOBAL_HEADER; |
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239 |
// open the codec |
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240 |
if (avcodec_open2(g_pVideo, g_pVCodec, &pDict) < 0) |
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241 |
FatalError("Could not open video codec %s", g_pVCodec->long_name); |
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242 |
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243 |
g_pVFrame = avcodec_alloc_frame(); |
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244 |
if (!g_pVFrame) |
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245 |
FatalError("Could not allocate frame"); |
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246 |
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247 |
g_pVFrame->linesize[0] = g_Width; |
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248 |
g_pVFrame->linesize[1] = g_Width/2; |
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249 |
g_pVFrame->linesize[2] = g_Width/2; |
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g_pVFrame->linesize[3] = 0; |
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251 |
} |
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parents:
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static int WriteFrame(AVFrame* pFrame) |
7180 | 254 |
{ |
255 |
double AudioTime, VideoTime; |
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256 |
||
257 |
// write interleaved audio frame |
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258 |
if (g_pAStream) |
|
259 |
{ |
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260 |
VideoTime = (double)g_pVStream->pts.val*g_pVStream->time_base.num/g_pVStream->time_base.den; |
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261 |
do |
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262 |
AudioTime = (double)g_pAStream->pts.val*g_pAStream->time_base.num/g_pAStream->time_base.den; |
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263 |
while (AudioTime < VideoTime && WriteAudioFrame()); |
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264 |
} |
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if (!g_pVStream) |
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|
267 |
return 0; |
7180 | 268 |
|
269 |
AVPacket Packet; |
|
270 |
av_init_packet(&Packet); |
|
271 |
Packet.data = NULL; |
|
272 |
Packet.size = 0; |
|
273 |
||
274 |
g_pVFrame->pts++; |
|
275 |
if (g_pFormat->flags & AVFMT_RAWPICTURE) |
|
276 |
{ |
|
277 |
/* raw video case. The API will change slightly in the near |
|
278 |
future for that. */ |
|
279 |
Packet.flags |= AV_PKT_FLAG_KEY; |
|
280 |
Packet.stream_index = g_pVStream->index; |
|
281 |
Packet.data = (uint8_t*)pFrame; |
|
282 |
Packet.size = sizeof(AVPicture); |
|
283 |
||
284 |
if (av_interleaved_write_frame(g_pContainer, &Packet) != 0) |
|
285 |
FatalError("Error while writing video frame"); |
|
286 |
return 0; |
|
287 |
} |
|
288 |
else |
|
289 |
{ |
|
290 |
#if LIBAVCODEC_VERSION_MAJOR >= 54 |
|
291 |
int got_packet; |
|
292 |
if (avcodec_encode_video2(g_pVideo, &Packet, pFrame, &got_packet) < 0) |
|
293 |
FatalError("avcodec_encode_video2 failed"); |
|
294 |
if (!got_packet) |
|
295 |
return 0; |
|
296 |
||
297 |
if (Packet.pts != AV_NOPTS_VALUE) |
|
298 |
Packet.pts = av_rescale_q(Packet.pts, g_pVideo->time_base, g_pVStream->time_base); |
|
299 |
if (Packet.dts != AV_NOPTS_VALUE) |
|
300 |
Packet.dts = av_rescale_q(Packet.dts, g_pVideo->time_base, g_pVStream->time_base); |
|
301 |
#else |
|
302 |
Packet.size = avcodec_encode_video(g_pVideo, g_OutBuffer, OUTBUFFER_SIZE, pFrame); |
|
303 |
if (Packet.size < 0) |
|
304 |
FatalError("avcodec_encode_video failed"); |
|
305 |
if (Packet.size == 0) |
|
306 |
return 0; |
|
307 |
||
308 |
if( g_pVideo->coded_frame->pts != AV_NOPTS_VALUE) |
|
309 |
Packet.pts = av_rescale_q(g_pVideo->coded_frame->pts, g_pVideo->time_base, g_pVStream->time_base); |
|
310 |
if( g_pVideo->coded_frame->key_frame ) |
|
311 |
Packet.flags |= AV_PKT_FLAG_KEY; |
|
312 |
Packet.data = g_OutBuffer; |
|
313 |
#endif |
|
314 |
// write the compressed frame in the media file |
|
315 |
Packet.stream_index = g_pVStream->index; |
|
316 |
if (av_interleaved_write_frame(g_pContainer, &Packet) != 0) |
|
317 |
FatalError("Error while writing video frame"); |
|
318 |
||
319 |
return 1; |
|
320 |
} |
|
321 |
} |
|
322 |
||
323 |
void AVWrapper_WriteFrame(uint8_t* pY, uint8_t* pCb, uint8_t* pCr) |
|
324 |
{ |
|
325 |
g_pVFrame->data[0] = pY; |
|
326 |
g_pVFrame->data[1] = pCb; |
|
327 |
g_pVFrame->data[2] = pCr; |
|
328 |
WriteFrame(g_pVFrame); |
|
329 |
} |
|
330 |
||
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|
331 |
void AVWrapper_Init( |
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|
332 |
void (*pAddFileLogRaw)(const char*), |
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|
333 |
const char* pFilename, |
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|
334 |
const char* pDesc, |
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|
335 |
const char* pSoundFile, |
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|
336 |
const char* pFormatName, |
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|
337 |
const char* pVCodecName, |
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|
338 |
const char* pACodecName, |
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|
339 |
const char* pVPreset, |
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|
340 |
int Width, int Height, |
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|
341 |
int FramerateNum, int FramerateDen, |
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|
342 |
int VQuality, int AQuality) |
7180 | 343 |
{ |
344 |
AddFileLogRaw = pAddFileLogRaw; |
|
345 |
av_log_set_callback( &LogCallback ); |
|
346 |
||
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|
347 |
g_Width = Width; |
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correctly fix odd dimensions (it was incorrectly fixed in previous commit)
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|
348 |
g_Height = Height; |
7198
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|
349 |
g_Framerate.num = FramerateNum; |
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|
350 |
g_Framerate.den = FramerateDen; |
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|
351 |
g_VQuality = VQuality; |
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|
352 |
g_AQuality = AQuality; |
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|
353 |
g_pPreset = pVPreset; |
7180 | 354 |
|
355 |
// initialize libav and register all codecs and formats |
|
356 |
av_register_all(); |
|
357 |
||
7198
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|
358 |
// find format |
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|
359 |
g_pFormat = av_guess_format(pFormatName, NULL, NULL); |
7180 | 360 |
if (!g_pFormat) |
7198
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diff
changeset
|
361 |
FatalError("Format \"%s\" was not found", pFormatName); |
7180 | 362 |
|
363 |
// allocate the output media context |
|
364 |
g_pContainer = avformat_alloc_context(); |
|
365 |
if (!g_pContainer) |
|
366 |
FatalError("Could not allocate output context"); |
|
367 |
||
7198
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changeset
|
368 |
g_pContainer->oformat = g_pFormat; |
7180 | 369 |
|
7280
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changeset
|
370 |
// store description of file |
fd707afbc3a2
pagevideos is now much better that before:
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changeset
|
371 |
av_dict_set(&g_pContainer->metadata, "comment", pDesc, 0); |
fd707afbc3a2
pagevideos is now much better that before:
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diff
changeset
|
372 |
|
7198
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1. Add IFDEFs for video recording
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diff
changeset
|
373 |
// append extesnion to filename |
7235
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1. Implement new page in frontend with options for video recording.
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diff
changeset
|
374 |
char ext[16]; |
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1. Implement new page in frontend with options for video recording.
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diff
changeset
|
375 |
strncpy(ext, g_pFormat->extensions, 16); |
baa69bd025d9
1. Implement new page in frontend with options for video recording.
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diff
changeset
|
376 |
ext[15] = 0; |
baa69bd025d9
1. Implement new page in frontend with options for video recording.
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diff
changeset
|
377 |
ext[strcspn(ext,",")] = 0; |
baa69bd025d9
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diff
changeset
|
378 |
snprintf(g_pContainer->filename, sizeof(g_pContainer->filename), "%s.%s", pFilename, ext); |
7180 | 379 |
|
7198
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diff
changeset
|
380 |
// find codecs |
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changeset
|
381 |
g_pVCodec = avcodec_find_encoder_by_name(pVCodecName); |
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diff
changeset
|
382 |
g_pACodec = avcodec_find_encoder_by_name(pACodecName); |
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1. Add IFDEFs for video recording
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diff
changeset
|
383 |
|
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1. Add IFDEFs for video recording
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parents:
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diff
changeset
|
384 |
// add audio and video stream to container |
7180 | 385 |
g_pVStream = NULL; |
386 |
g_pAStream = NULL; |
|
7198
5debd5fe526e
1. Add IFDEFs for video recording
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parents:
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diff
changeset
|
387 |
|
5debd5fe526e
1. Add IFDEFs for video recording
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parents:
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diff
changeset
|
388 |
if (g_pVCodec) |
5debd5fe526e
1. Add IFDEFs for video recording
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parents:
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diff
changeset
|
389 |
AddVideoStream(); |
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1. Add IFDEFs for video recording
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parents:
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diff
changeset
|
390 |
else |
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parents:
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diff
changeset
|
391 |
Log("Video codec \"%s\" was not found; video will be ignored.\n", pVCodecName); |
7180 | 392 |
|
7198
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parents:
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diff
changeset
|
393 |
if (g_pACodec) |
7280
fd707afbc3a2
pagevideos is now much better that before:
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parents:
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diff
changeset
|
394 |
{ |
fd707afbc3a2
pagevideos is now much better that before:
Stepan777 <stepik-777@mail.ru>
parents:
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diff
changeset
|
395 |
g_pSoundFile = fopen(pSoundFile, "rb"); |
fd707afbc3a2
pagevideos is now much better that before:
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parents:
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diff
changeset
|
396 |
if (g_pSoundFile) |
fd707afbc3a2
pagevideos is now much better that before:
Stepan777 <stepik-777@mail.ru>
parents:
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diff
changeset
|
397 |
{ |
fd707afbc3a2
pagevideos is now much better that before:
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parents:
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diff
changeset
|
398 |
fread(&g_Frequency, 4, 1, g_pSoundFile); |
fd707afbc3a2
pagevideos is now much better that before:
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parents:
7235
diff
changeset
|
399 |
fread(&g_Channels, 4, 1, g_pSoundFile); |
fd707afbc3a2
pagevideos is now much better that before:
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parents:
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diff
changeset
|
400 |
AddAudioStream(); |
fd707afbc3a2
pagevideos is now much better that before:
Stepan777 <stepik-777@mail.ru>
parents:
7235
diff
changeset
|
401 |
} |
fd707afbc3a2
pagevideos is now much better that before:
Stepan777 <stepik-777@mail.ru>
parents:
7235
diff
changeset
|
402 |
else |
fd707afbc3a2
pagevideos is now much better that before:
Stepan777 <stepik-777@mail.ru>
parents:
7235
diff
changeset
|
403 |
Log("Could not open %s", pSoundFile); |
fd707afbc3a2
pagevideos is now much better that before:
Stepan777 <stepik-777@mail.ru>
parents:
7235
diff
changeset
|
404 |
} |
7198
5debd5fe526e
1. Add IFDEFs for video recording
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parents:
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diff
changeset
|
405 |
else |
5debd5fe526e
1. Add IFDEFs for video recording
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parents:
7180
diff
changeset
|
406 |
Log("Audio codec \"%s\" was not found; audio will be ignored.\n", pACodecName); |
5debd5fe526e
1. Add IFDEFs for video recording
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parents:
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diff
changeset
|
407 |
|
5debd5fe526e
1. Add IFDEFs for video recording
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parents:
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diff
changeset
|
408 |
if (!g_pAStream && !g_pVStream) |
5debd5fe526e
1. Add IFDEFs for video recording
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parents:
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diff
changeset
|
409 |
FatalError("No video, no audio, aborting..."); |
7180 | 410 |
|
411 |
// write format info to log |
|
7198
5debd5fe526e
1. Add IFDEFs for video recording
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parents:
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diff
changeset
|
412 |
av_dump_format(g_pContainer, 0, g_pContainer->filename, 1); |
7180 | 413 |
|
414 |
// open the output file, if needed |
|
415 |
if (!(g_pFormat->flags & AVFMT_NOFILE)) |
|
416 |
{ |
|
7198
5debd5fe526e
1. Add IFDEFs for video recording
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diff
changeset
|
417 |
if (avio_open(&g_pContainer->pb, g_pContainer->filename, AVIO_FLAG_WRITE) < 0) |
7180 | 418 |
FatalError("Could not open output file (%s)", pFilename); |
419 |
} |
|
420 |
||
421 |
// write the stream header, if any |
|
422 |
avformat_write_header(g_pContainer, NULL); |
|
7198
5debd5fe526e
1. Add IFDEFs for video recording
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diff
changeset
|
423 |
|
7180 | 424 |
g_pVFrame->pts = -1; |
425 |
} |
|
426 |
||
427 |
void AVWrapper_Close() |
|
428 |
{ |
|
429 |
// output buffered frames |
|
430 |
if (g_pVCodec->capabilities & CODEC_CAP_DELAY) |
|
431 |
while( WriteFrame(NULL) ); |
|
432 |
// output any remaining audio |
|
433 |
while( WriteAudioFrame() ); |
|
434 |
||
435 |
// write the trailer, if any. |
|
436 |
av_write_trailer(g_pContainer); |
|
437 |
||
7198
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diff
changeset
|
438 |
// close the output file |
5debd5fe526e
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diff
changeset
|
439 |
if (!(g_pFormat->flags & AVFMT_NOFILE)) |
5debd5fe526e
1. Add IFDEFs for video recording
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diff
changeset
|
440 |
avio_close(g_pContainer->pb); |
5debd5fe526e
1. Add IFDEFs for video recording
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diff
changeset
|
441 |
|
5debd5fe526e
1. Add IFDEFs for video recording
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parents:
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diff
changeset
|
442 |
// free everything |
5debd5fe526e
1. Add IFDEFs for video recording
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diff
changeset
|
443 |
if (g_pVStream) |
7180 | 444 |
{ |
7198
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diff
changeset
|
445 |
avcodec_close(g_pVideo); |
5debd5fe526e
1. Add IFDEFs for video recording
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diff
changeset
|
446 |
av_free(g_pVideo); |
5debd5fe526e
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diff
changeset
|
447 |
av_free(g_pVStream); |
7180 | 448 |
av_free(g_pVFrame); |
449 |
} |
|
7198
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changeset
|
450 |
if (g_pAStream) |
7180 | 451 |
{ |
7198
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changeset
|
452 |
avcodec_close(g_pAudio); |
5debd5fe526e
1. Add IFDEFs for video recording
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diff
changeset
|
453 |
av_free(g_pAudio); |
5debd5fe526e
1. Add IFDEFs for video recording
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diff
changeset
|
454 |
av_free(g_pAStream); |
7180 | 455 |
av_free(g_pAFrame); |
456 |
av_free(g_pSamples); |
|
457 |
fclose(g_pSoundFile); |
|
458 |
} |
|
459 |
||
460 |
av_free(g_pContainer); |
|
461 |
} |