projects/hoofbaby: src/impl/hoofbaby/codec/decoder.d annotate

annotate src/impl/hoofbaby/codec/decoder.d @ 9:05c88622db6b default tip

- Adhoc transcoder now doesn't rely on Platinum - Moved the adhoc transcoder to the main source tree; it can be moved back into test once it's more stable

author	fraserofthenight
date	Tue, 14 Jul 2009 22:04:05 -0700
parents	71ebad05f542
children

rev	line source
7 9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	1 /**
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	2 * Hoofbaby -- http://www.dsource.org/projects/hoofbaby
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	3 * Copyright (C) 2009 Robert Fraser
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	4 *
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	5 * This program is free software; you can redistribute it andor
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	6 * modify it under the terms of the GNU General Public License
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	7 * as published by the Free Software Foundation; either version 2
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	8 * of the License, or (at your option) any later version.
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	9 *
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	10 * This program is distributed in the hope that it will be useful,
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	13 * GNU General Public License for more details.
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	14 */
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	15
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	16 module hoofbaby.codec.decoder;
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	17
8 71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	18 import tango.io.Stdout;
7 9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	19 import tango.stdc.stringz;
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	20
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	21 import hoofbaby.codec.libav.avutil;
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	22 import hoofbaby.codec.libav.avcodec;
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	23 import hoofbaby.codec.libav.avformat;
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	24
9 05c88622db6b - Adhoc transcoder now doesn't rely on Platinum fraserofthenight parents: 8 diff changeset	25 public final class Decoder
7 9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	26 {
8 71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	27 private char[] file;
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	28
7 9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	29 private AVFormatContext* formatContext;
8 71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	30 private bool fileOpen = false;
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	31
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	32 private AVStream* videoStream;
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	33 private AVCodec* videoCodec;
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	34 private AVCodecContext* videoContext;
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	35 private bool videoOpen = false;
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	36
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	37 private AVStream* audioStream;
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	38 private AVCodec* audioCodec;
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	39 private AVCodecContext* audioContext;
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	40 private bool audioOpen = false;
7 9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	41
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	42 public this(char[] inFilename)
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	43 {
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	44 int ret;
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	45
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	46 // Open file & find stream info
8 71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	47 file = inFilename;
7 9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	48 char* filename = toStringz(inFilename);
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	49 ret = av_open_input_file(&formatContext, filename, null, 0, null);
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	50 assert(ret == 0, "Could not open input file");
8 71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	51 fileOpen = true;
7 9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	52 ret = av_find_stream_info(formatContext);
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	53 assert(ret >= 0, "Could not find stream info");
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	54 dump_format(formatContext, 0, filename, false);
8 71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	55
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	56 // Find the first video stream (don't worry about the rest until a much later version)
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	57 for(int i = 0; i < formatContext.nb_streams; i++)
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	58 {
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	59 AVStream* str = formatContext.streams[i];
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	60 if(str !is null && str.codec.codec_type == CODEC_TYPE_VIDEO)
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	61 {
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	62 videoStream = str;
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	63 break;
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	64 }
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	65 }
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	66 assert(videoStream !is null, "Could not find video stream");
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	67 videoContext = videoStream.codec;
9 05c88622db6b - Adhoc transcoder now doesn't rely on Platinum fraserofthenight parents: 8 diff changeset	68 assert(videoContext !is null, "Null codec context from non-null video stream");
8 71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	69 videoCodec = avcodec_find_decoder(videoContext.codec_id);
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	70 assert(videoCodec !is null, "Unsupported video format");
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	71 ret = avcodec_open(videoContext, videoCodec);
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	72 assert(ret >= 0, "Could not open video decoder");
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	73 videoOpen = true;
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	74
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	75 // Find the first audio stream (NEXTVERSION deal with multiple audio streams)
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	76 for(int i = 0; i < formatContext.nb_streams; i++)
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	77 {
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	78 AVStream* str = formatContext.streams[i];
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	79 if(str !is null && str.codec.codec_type == CODEC_TYPE_AUDIO)
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	80 {
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	81 audioStream = str;
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	82 break;
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	83 }
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	84 }
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	85 assert(audioStream !is null, "Could not find audio stream");
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	86 audioContext = audioStream.codec;
9 05c88622db6b - Adhoc transcoder now doesn't rely on Platinum fraserofthenight parents: 8 diff changeset	87 assert(audioContext !is null, "Null codec context from non-null audio stream");
8 71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	88 audioCodec = avcodec_find_decoder(audioContext.codec_id);
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	89 assert(audioCodec !is null, "Unsupported audio format");
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	90 ret = avcodec_open(audioContext, audioCodec);
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	91 assert(ret >= 0, "Could not open audio decoder");
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	92 audioOpen = true;
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	93
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	94 scope(failure) freeResources();
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	95 }
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	96
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	97 public ~this()
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	98 {
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	99 freeResources();
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	100 }
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	101
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	102 private void freeResources()
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	103 {
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	104 if(videoOpen) avcodec_close(videoContext);
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	105 if(audioOpen) avcodec_close(audioContext);
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	106 if(fileOpen) av_close_input_file(formatContext);
71ebad05f542 It seems to be successfully opening input files... Now to transcode! fraserofthenight parents: 7 diff changeset	107 if(formatContext) av_free(formatContext);
7 9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	108 }
9fdfe4a64a13 Added the beginnings of a decoder... Soon I'll have a crappier version of ffmpeg written in D! fraserofthenight parents: diff changeset	109 }

Mercurial > projects > hoofbaby

annotate src/impl/hoofbaby/codec/decoder.d @ 9:05c88622db6b default tip