--------------------- 2009/02/25 ---------------------
投影片連結
這禮拜是先介紹一下 OpenMAX
沒有實作過，所以整個架構上還沒有說很清楚
目前是打算把 DL 後面幾個feature看完
再來看一下應該怎麼去實作
OpenMAX AL 與 OpenMAX IL 的差別?
AL : OpenMAX AL is meant for media application developers.
主要是被用來開發應用程式的
在論壇中有提到說 目前 AL 1.0版 目前還沒正式發布
所以還沒有implementation 存在 有提到說大概在今年夏天就會公布 XD
IL : to integrate and communicate with multimedia codecs implemented in hardware or software.
代表是整合下層的codecs 像是把下層codecs包起來
而被包起來的名稱在 AL 這一層被稱做為object
--------------------- 2009/03/02 ---------------------
這禮拜是繼續將上禮拜沒看完的文件看完 至於會不會用到想說留到看完再來討論。
基本上OpenMAX IL 這一層主要重點是在於各個components之間的關係與溝通，而component內容可以寫到跟硬體或底層的軟體作溝通(像是可以呼叫alsa函式庫去播音樂，或者要遵循OpenMAX DL的規範 像 arm 有提供ARM OpenMAX DL Libraries有幾個codecs的API function可以使用(ex. mp3, h264...))就看自己要怎麼寫，因為跟寫slim component沒差多少。
另外有去看一個open source 的東西叫做 "Bellagio"，是一個OpenMAX IL sample implementation for Linux，它上面有不多也不少的components在上面(10~30)個吧，我只有十個，看別人文章有三十個Orz，因為我一直安裝不起來，還沒辦法放一首mp3來聽聽。這個東西比較適合在學習寫IL的components的入門範例程式。有提供簡單的applications讓你連接各個components去做測試。網址 http://omxil.sourceforge.net/
還有，就是也稍微去找了一下nvidia cuda上有沒有跟 OpenMAX上相關的東西，發現是..只有新聞文章。其它就沒有了，可能還得再找找。
--------------------- 2009/03/24 ---------------------
這次主要對bellagio的做法加以了解，看是如何去驅動每個component去做初始化，連結，執行等等，為了之後看是否能使slim的架構上能夠讓OMX components 加個adapter 就能夠與slim的component 相連。並且思考該怎麼去實作。還必須要搞懂slim中如何去操作component，之前只有個概念而已。之後多找個時間看一下。
--------------------- 2009/04/07 ---------------------
報告目前進度，之前是將Bellagio的編譯環境建起來，並粗略去trace他其中一個寫好的系統，就是撥放audio的專案，目前是想先去試著將某一部分的功能試著在slim上面寫，還在嘗試的階段，先不考慮到OpenMAX component與slim中的component作連結，先試著把Bellagio中專案拆開到slim上就好，之後，還需要研究一下如何將OpenMAX中傳遞資料的"buffer"轉換成slim中的data channel和 signal channel。
--------------------- 2009/05/19 ---------------------
這次終於算是把OMX的mp3元件兜起來了,目前也把他掛在slim上可以正常work了，想一下做這麼久的原因，是一開始對mp3 decoder順序及特性的不熟悉，以及對OMX所規定的函數參數傳進傳出的不熟悉。目前有拿過不同類型的mp3去執行。到目前是都可以正常播放的，不過有去利用slim原本提供的mp3 decoder做比較，都分別將pcm檔輸出做比較，檔案內容不太一樣，可是去看一下波形兩個的差異不大。
--------------------- 2009/05/29 ---------------------
列一下目前知道可用的codec：
ARM OpenMAX_DL Sample Code
AC(Audio Coding)
mp3
aac
VC(Video Coding)
Common
MPEG4 Part2
MPEG4 Part10
IC(Image Coding)
JPEG codec
FFmpeg那個我不知道該怎麼列，太多不懂的格式了，直接列出他程式碼的一段提到他的codec格式，覺得需要什麼在去挖看看有沒有。
/* video codecs */
REGISTER_DECODER (AASC, aasc);
REGISTER_DECODER (AMV, amv);
REGISTER_ENCDEC (ASV1, asv1);
REGISTER_ENCDEC (ASV2, asv2);
REGISTER_DECODER (AVS, avs);
REGISTER_DECODER (BETHSOFTVID, bethsoftvid);
REGISTER_DECODER (BFI, bfi);
REGISTER_ENCDEC (BMP, bmp);
REGISTER_DECODER (C93, c93);
REGISTER_DECODER (CAVS, cavs);
REGISTER_DECODER (CINEPAK, cinepak);
REGISTER_DECODER (CLJR, cljr);
REGISTER_DECODER (CSCD, cscd);
REGISTER_DECODER (CYUV, cyuv);
REGISTER_ENCDEC (DNXHD, dnxhd);
REGISTER_DECODER (DSICINVIDEO, dsicinvideo);
REGISTER_ENCDEC (DVVIDEO, dvvideo);
REGISTER_DECODER (DXA, dxa);
REGISTER_DECODER (EACMV, eacmv);
REGISTER_DECODER (EATGQ, eatgq);
REGISTER_DECODER (EATGV, eatgv);
REGISTER_DECODER (EATQI, eatqi);
REGISTER_DECODER (EIGHTBPS, eightbps);
REGISTER_DECODER (EIGHTSVX_EXP, eightsvx_exp);
REGISTER_DECODER (EIGHTSVX_FIB, eightsvx_fib);
REGISTER_DECODER (ESCAPE124, escape124);
REGISTER_ENCDEC (FFV1, ffv1);
REGISTER_ENCDEC (FFVHUFF, ffvhuff);
REGISTER_ENCDEC (FLASHSV, flashsv);
REGISTER_DECODER (FLIC, flic);
REGISTER_ENCDEC (FLV, flv);
REGISTER_DECODER (FOURXM, fourxm);
REGISTER_DECODER (FRAPS, fraps);
REGISTER_ENCDEC (GIF, gif);
REGISTER_ENCDEC (H261, h261);
REGISTER_ENCDEC (H263, h263);
REGISTER_DECODER (H263I, h263i);
REGISTER_ENCODER (H263P, h263p);
REGISTER_DECODER (H264, h264);
REGISTER_DECODER (H264_VDPAU, h264_vdpau);
REGISTER_ENCDEC (HUFFYUV, huffyuv);
REGISTER_DECODER (IDCIN, idcin);
REGISTER_DECODER (INDEO2, indeo2);
REGISTER_DECODER (INDEO3, indeo3);
REGISTER_DECODER (INTERPLAY_VIDEO, interplay_video);
REGISTER_ENCDEC (JPEGLS, jpegls);
REGISTER_DECODER (KMVC, kmvc);
REGISTER_ENCODER (LJPEG, ljpeg);
REGISTER_DECODER (LOCO, loco);
REGISTER_DECODER (MDEC, mdec);
REGISTER_DECODER (MIMIC, mimic);
REGISTER_ENCDEC (MJPEG, mjpeg);
REGISTER_DECODER (MJPEGB, mjpegb);
REGISTER_DECODER (MMVIDEO, mmvideo);
REGISTER_DECODER (MOTIONPIXELS, motionpixels);
REGISTER_DECODER (MPEG_XVMC, mpeg_xvmc);
REGISTER_ENCDEC (MPEG1VIDEO, mpeg1video);
REGISTER_ENCDEC (MPEG2VIDEO, mpeg2video);
REGISTER_ENCDEC (MPEG4, mpeg4);
REGISTER_DECODER (MPEGVIDEO, mpegvideo);
REGISTER_DECODER (MPEG_VDPAU, mpeg_vdpau);
REGISTER_DECODER (MPEG1_VDPAU, mpeg1_vdpau);
REGISTER_ENCDEC (MSMPEG4V1, msmpeg4v1);
REGISTER_ENCDEC (MSMPEG4V2, msmpeg4v2);
REGISTER_ENCDEC (MSMPEG4V3, msmpeg4v3);
REGISTER_DECODER (MSRLE, msrle);
REGISTER_DECODER (MSVIDEO1, msvideo1);
REGISTER_DECODER (MSZH, mszh);
REGISTER_DECODER (NUV, nuv);
REGISTER_ENCODER (PAM, pam);
REGISTER_ENCODER (PBM, pbm);
REGISTER_DECODER (PCX, pcx);
REGISTER_ENCODER (PGM, pgm);
REGISTER_ENCODER (PGMYUV, pgmyuv);
REGISTER_ENCDEC (PNG, png);
REGISTER_ENCODER (PPM, ppm);
REGISTER_DECODER (PTX, ptx);
REGISTER_DECODER (QDRAW, qdraw);
REGISTER_DECODER (QPEG, qpeg);
REGISTER_ENCDEC (QTRLE, qtrle);
REGISTER_ENCDEC (RAWVIDEO, rawvideo);
REGISTER_DECODER (RL2, rl2);
REGISTER_ENCDEC (ROQ, roq);
REGISTER_DECODER (RPZA, rpza);
REGISTER_ENCDEC (RV10, rv10);
REGISTER_ENCDEC (RV20, rv20);
REGISTER_DECODER (RV30, rv30);
REGISTER_DECODER (RV40, rv40);
REGISTER_ENCDEC (SGI, sgi);
REGISTER_DECODER (SMACKER, smacker);
REGISTER_DECODER (SMC, smc);
REGISTER_ENCDEC (SNOW, snow);
REGISTER_DECODER (SP5X, sp5x);
REGISTER_DECODER (SUNRAST, sunrast);
REGISTER_ENCDEC (SVQ1, svq1);
REGISTER_DECODER (SVQ3, svq3);
REGISTER_ENCDEC (TARGA, targa);
REGISTER_DECODER (THEORA, theora);
REGISTER_DECODER (THP, thp);
REGISTER_DECODER (TIERTEXSEQVIDEO, tiertexseqvideo);
REGISTER_ENCDEC (TIFF, tiff);
REGISTER_DECODER (TRUEMOTION1, truemotion1);
REGISTER_DECODER (TRUEMOTION2, truemotion2);
REGISTER_DECODER (TSCC, tscc);
REGISTER_DECODER (TXD, txd);
REGISTER_DECODER (ULTI, ulti);
REGISTER_DECODER (VB, vb);
REGISTER_DECODER (VC1, vc1);
REGISTER_DECODER (VC1_VDPAU, vc1_vdpau);
REGISTER_DECODER (VCR1, vcr1);
REGISTER_DECODER (VMDVIDEO, vmdvideo);
REGISTER_DECODER (VMNC, vmnc);
REGISTER_DECODER (VP3, vp3);
REGISTER_DECODER (VP5, vp5);
REGISTER_DECODER (VP6, vp6);
REGISTER_DECODER (VP6A, vp6a);
REGISTER_DECODER (VP6F, vp6f);
REGISTER_DECODER (VQA, vqa);
REGISTER_ENCDEC (WMV1, wmv1);
REGISTER_ENCDEC (WMV2, wmv2);
REGISTER_DECODER (WMV3, wmv3);
REGISTER_DECODER (WMV3_VDPAU, wmv3_vdpau);
REGISTER_DECODER (WNV1, wnv1);
REGISTER_DECODER (XAN_WC3, xan_wc3);
REGISTER_DECODER (XL, xl);
REGISTER_ENCDEC (ZLIB, zlib);
REGISTER_ENCDEC (ZMBV, zmbv);
/* audio codecs */
REGISTER_DECODER (AAC, aac);
REGISTER_ENCDEC (AC3, ac3);
REGISTER_ENCDEC (ALAC, alac);
REGISTER_DECODER (APE, ape);
REGISTER_DECODER (ATRAC3, atrac3);
REGISTER_DECODER (COOK, cook);
REGISTER_DECODER (DCA, dca);
REGISTER_DECODER (DSICINAUDIO, dsicinaudio);
REGISTER_DECODER (EAC3, eac3);
REGISTER_ENCDEC (FLAC, flac);
REGISTER_DECODER (IMC, imc);
REGISTER_DECODER (MACE3, mace3);
REGISTER_DECODER (MACE6, mace6);
REGISTER_DECODER (MLP, mlp);
REGISTER_DECODER (MP1, mp1);
REGISTER_ENCDEC (MP2, mp2);
REGISTER_DECODER (MP3, mp3);
REGISTER_DECODER (MP3ADU, mp3adu);
REGISTER_DECODER (MP3ON4, mp3on4);
REGISTER_DECODER (MPC7, mpc7);
REGISTER_DECODER (MPC8, mpc8);
REGISTER_ENCDEC (NELLYMOSER, nellymoser);
REGISTER_DECODER (QCELP, qcelp);
REGISTER_DECODER (QDM2, qdm2);
REGISTER_DECODER (RA_144, ra_144);
REGISTER_DECODER (RA_288, ra_288);
REGISTER_DECODER (SHORTEN, shorten);
REGISTER_DECODER (SMACKAUD, smackaud);
REGISTER_ENCDEC (SONIC, sonic);
REGISTER_ENCODER (SONIC_LS, sonic_ls);
REGISTER_DECODER (TRUESPEECH, truespeech);
REGISTER_DECODER (TTA, tta);
REGISTER_DECODER (VMDAUDIO, vmdaudio);
REGISTER_ENCDEC (VORBIS, vorbis);
REGISTER_DECODER (WAVPACK, wavpack);
REGISTER_ENCDEC (WMAV1, wmav1);
REGISTER_ENCDEC (WMAV2, wmav2);
REGISTER_DECODER (WS_SND1, ws_snd1);
/* PCM codecs */
REGISTER_ENCDEC (PCM_ALAW, pcm_alaw);
REGISTER_DECODER (PCM_DVD, pcm_dvd);
REGISTER_ENCDEC (PCM_F32BE, pcm_f32be);
REGISTER_ENCDEC (PCM_F32LE, pcm_f32le);
REGISTER_ENCDEC (PCM_F64BE, pcm_f64be);
REGISTER_ENCDEC (PCM_F64LE, pcm_f64le);
REGISTER_ENCDEC (PCM_MULAW, pcm_mulaw);
REGISTER_ENCDEC (PCM_S8, pcm_s8);
REGISTER_ENCDEC (PCM_S16BE, pcm_s16be);
REGISTER_ENCDEC (PCM_S16LE, pcm_s16le);
REGISTER_DECODER (PCM_S16LE_PLANAR, pcm_s16le_planar);
REGISTER_ENCDEC (PCM_S24BE, pcm_s24be);
REGISTER_ENCDEC (PCM_S24DAUD, pcm_s24daud);
REGISTER_ENCDEC (PCM_S24LE, pcm_s24le);
REGISTER_ENCDEC (PCM_S32BE, pcm_s32be);
REGISTER_ENCDEC (PCM_S32LE, pcm_s32le);
REGISTER_ENCDEC (PCM_U8, pcm_u8);
REGISTER_ENCDEC (PCM_U16BE, pcm_u16be);
REGISTER_ENCDEC (PCM_U16LE, pcm_u16le);
REGISTER_ENCDEC (PCM_U24BE, pcm_u24be);
REGISTER_ENCDEC (PCM_U24LE, pcm_u24le);
REGISTER_ENCDEC (PCM_U32BE, pcm_u32be);
REGISTER_ENCDEC (PCM_U32LE, pcm_u32le);
REGISTER_ENCDEC (PCM_ZORK , pcm_zork);
/* DPCM codecs */
REGISTER_DECODER (INTERPLAY_DPCM, interplay_dpcm);
REGISTER_ENCDEC (ROQ_DPCM, roq_dpcm);
REGISTER_DECODER (SOL_DPCM, sol_dpcm);
REGISTER_DECODER (XAN_DPCM, xan_dpcm);
/* ADPCM codecs */
REGISTER_DECODER (ADPCM_4XM, adpcm_4xm);
REGISTER_ENCDEC (ADPCM_ADX, adpcm_adx);
REGISTER_DECODER (ADPCM_CT, adpcm_ct);
REGISTER_DECODER (ADPCM_EA, adpcm_ea);
REGISTER_DECODER (ADPCM_EA_MAXIS_XA, adpcm_ea_maxis_xa);
REGISTER_DECODER (ADPCM_EA_R1, adpcm_ea_r1);
REGISTER_DECODER (ADPCM_EA_R2, adpcm_ea_r2);
REGISTER_DECODER (ADPCM_EA_R3, adpcm_ea_r3);
REGISTER_DECODER (ADPCM_EA_XAS, adpcm_ea_xas);
REGISTER_ENCDEC (ADPCM_G726, adpcm_g726);
REGISTER_DECODER (ADPCM_IMA_AMV, adpcm_ima_amv);
REGISTER_DECODER (ADPCM_IMA_DK3, adpcm_ima_dk3);
REGISTER_DECODER (ADPCM_IMA_DK4, adpcm_ima_dk4);
REGISTER_DECODER (ADPCM_IMA_EA_EACS, adpcm_ima_ea_eacs);
REGISTER_DECODER (ADPCM_IMA_EA_SEAD, adpcm_ima_ea_sead);
REGISTER_DECODER (ADPCM_IMA_ISS, adpcm_ima_iss);
REGISTER_ENCDEC (ADPCM_IMA_QT, adpcm_ima_qt);
REGISTER_DECODER (ADPCM_IMA_SMJPEG, adpcm_ima_smjpeg);
REGISTER_ENCDEC (ADPCM_IMA_WAV, adpcm_ima_wav);
REGISTER_DECODER (ADPCM_IMA_WS, adpcm_ima_ws);
REGISTER_ENCDEC (ADPCM_MS, adpcm_ms);
REGISTER_DECODER (ADPCM_SBPRO_2, adpcm_sbpro_2);
REGISTER_DECODER (ADPCM_SBPRO_3, adpcm_sbpro_3);
REGISTER_DECODER (ADPCM_SBPRO_4, adpcm_sbpro_4);
REGISTER_ENCDEC (ADPCM_SWF, adpcm_swf);
REGISTER_DECODER (ADPCM_THP, adpcm_thp);
REGISTER_DECODER (ADPCM_XA, adpcm_xa);
REGISTER_ENCDEC (ADPCM_YAMAHA, adpcm_yamaha);
/* subtitles */
REGISTER_ENCDEC (DVBSUB, dvbsub);
REGISTER_ENCDEC (DVDSUB, dvdsub);
REGISTER_DECODER (XSUB, xsub);
/* external libraries */
REGISTER_ENCDEC (LIBAMR_NB, libamr_nb);
REGISTER_ENCDEC (LIBAMR_WB, libamr_wb);
REGISTER_ENCDEC (LIBDIRAC, libdirac);
REGISTER_ENCODER (LIBFAAC, libfaac);
REGISTER_DECODER (LIBFAAD, libfaad);
REGISTER_ENCDEC (LIBGSM, libgsm);
REGISTER_ENCDEC (LIBGSM_MS, libgsm_ms);
REGISTER_ENCODER (LIBMP3LAME, libmp3lame);
REGISTER_DECODER (LIBOPENJPEG, libopenjpeg);
REGISTER_ENCDEC (LIBSCHROEDINGER, libschroedinger);
REGISTER_DECODER (LIBSPEEX, libspeex);
REGISTER_ENCODER (LIBTHEORA, libtheora);
REGISTER_ENCODER (LIBVORBIS, libvorbis);
REGISTER_ENCODER (LIBX264, libx264);
REGISTER_ENCODER (LIBXVID, libxvid);
