mirror of https://github.com/FreeRDP/FreeRDP
534 lines
16 KiB
C
534 lines
16 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Video Redirection Virtual Channel - FFmpeg Decoder
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*
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* Copyright 2010-2011 Vic Lee
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <winpr/crt.h>
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#include <freerdp/channels/log.h>
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#include <freerdp/utils/event.h>
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#include <freerdp/client/tsmf.h>
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#include <libavcodec/avcodec.h>
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#include <libavutil/common.h>
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#include "tsmf_constants.h"
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#include "tsmf_decoder.h"
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/* Compatibility with older FFmpeg */
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#if LIBAVUTIL_VERSION_MAJOR < 50
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#define AVMEDIA_TYPE_VIDEO 0
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#define AVMEDIA_TYPE_AUDIO 1
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#endif
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#if LIBAVCODEC_VERSION_MAJOR < 54
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#define MAX_AUDIO_FRAME_SIZE AVCODEC_MAX_AUDIO_FRAME_SIZE
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#else
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#define MAX_AUDIO_FRAME_SIZE 192000
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#endif
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#if LIBAVCODEC_VERSION_MAJOR < 55
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#define AV_CODEC_ID_VC1 CODEC_ID_VC1
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#define AV_CODEC_ID_WMAV2 CODEC_ID_WMAV2
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#define AV_CODEC_ID_WMAPRO CODEC_ID_WMAPRO
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#define AV_CODEC_ID_MP3 CODEC_ID_MP3
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#define AV_CODEC_ID_MP2 CODEC_ID_MP2
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#define AV_CODEC_ID_MPEG2VIDEO CODEC_ID_MPEG2VIDEO
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#define AV_CODEC_ID_WMV3 CODEC_ID_WMV3
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#define AV_CODEC_ID_AAC CODEC_ID_AAC
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#define AV_CODEC_ID_H264 CODEC_ID_H264
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#define AV_CODEC_ID_AC3 CODEC_ID_AC3
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#endif
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typedef struct _TSMFFFmpegDecoder
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{
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ITSMFDecoder iface;
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int media_type;
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#if LIBAVCODEC_VERSION_MAJOR < 55
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enum CodecID codec_id;
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#else
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enum AVCodecID codec_id;
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#endif
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AVCodecContext *codec_context;
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AVCodec *codec;
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AVFrame *frame;
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int prepared;
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BYTE *decoded_data;
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UINT32 decoded_size;
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UINT32 decoded_size_max;
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} TSMFFFmpegDecoder;
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static BOOL tsmf_ffmpeg_init_context(ITSMFDecoder *decoder)
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{
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TSMFFFmpegDecoder *mdecoder = (TSMFFFmpegDecoder *) decoder;
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mdecoder->codec_context = avcodec_alloc_context3(NULL);
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if(!mdecoder->codec_context)
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{
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CLOG_ERR("avcodec_alloc_context failed.");
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return FALSE;
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}
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return TRUE;
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}
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static BOOL tsmf_ffmpeg_init_video_stream(ITSMFDecoder *decoder, const TS_AM_MEDIA_TYPE *media_type)
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{
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TSMFFFmpegDecoder *mdecoder = (TSMFFFmpegDecoder *) decoder;
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mdecoder->codec_context->width = media_type->Width;
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mdecoder->codec_context->height = media_type->Height;
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mdecoder->codec_context->bit_rate = media_type->BitRate;
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mdecoder->codec_context->time_base.den = media_type->SamplesPerSecond.Numerator;
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mdecoder->codec_context->time_base.num = media_type->SamplesPerSecond.Denominator;
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mdecoder->frame = avcodec_alloc_frame();
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return TRUE;
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}
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static BOOL tsmf_ffmpeg_init_audio_stream(ITSMFDecoder *decoder, const TS_AM_MEDIA_TYPE *media_type)
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{
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TSMFFFmpegDecoder *mdecoder = (TSMFFFmpegDecoder *) decoder;
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mdecoder->codec_context->sample_rate = media_type->SamplesPerSecond.Numerator;
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mdecoder->codec_context->bit_rate = media_type->BitRate;
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mdecoder->codec_context->channels = media_type->Channels;
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mdecoder->codec_context->block_align = media_type->BlockAlign;
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#if LIBAVCODEC_VERSION_MAJOR < 55
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#ifdef AV_CPU_FLAG_SSE2
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mdecoder->codec_context->dsp_mask = AV_CPU_FLAG_SSE2 | AV_CPU_FLAG_MMX2;
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#else
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#if LIBAVCODEC_VERSION_MAJOR < 53
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mdecoder->codec_context->dsp_mask = FF_MM_SSE2 | FF_MM_MMXEXT;
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#else
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mdecoder->codec_context->dsp_mask = FF_MM_SSE2 | FF_MM_MMX2;
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#endif
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#endif
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#else /* LIBAVCODEC_VERSION_MAJOR < 55 */
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#ifdef AV_CPU_FLAG_SSE2
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av_set_cpu_flags_mask(AV_CPU_FLAG_SSE2 | AV_CPU_FLAG_MMX2);
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#else
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av_set_cpu_flags_mask(FF_MM_SSE2 | FF_MM_MMX2);
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#endif
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#endif /* LIBAVCODEC_VERSION_MAJOR < 55 */
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return TRUE;
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}
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static BOOL tsmf_ffmpeg_init_stream(ITSMFDecoder *decoder, const TS_AM_MEDIA_TYPE *media_type)
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{
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BYTE *p;
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UINT32 size;
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const BYTE *s;
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TSMFFFmpegDecoder *mdecoder = (TSMFFFmpegDecoder *) decoder;
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mdecoder->codec = avcodec_find_decoder(mdecoder->codec_id);
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if(!mdecoder->codec)
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{
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CLOG_ERR("avcodec_find_decoder failed.");
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return FALSE;
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}
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mdecoder->codec_context->codec_id = mdecoder->codec_id;
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mdecoder->codec_context->codec_type = mdecoder->media_type;
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if(mdecoder->media_type == AVMEDIA_TYPE_VIDEO)
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{
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if(!tsmf_ffmpeg_init_video_stream(decoder, media_type))
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return FALSE;
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}
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else
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if(mdecoder->media_type == AVMEDIA_TYPE_AUDIO)
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{
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if(!tsmf_ffmpeg_init_audio_stream(decoder, media_type))
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return FALSE;
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}
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if(media_type->ExtraData)
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{
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if(media_type->SubType == TSMF_SUB_TYPE_AVC1 &&
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media_type->FormatType == TSMF_FORMAT_TYPE_MPEG2VIDEOINFO)
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{
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/* The extradata format that FFmpeg uses is following CodecPrivate in Matroska.
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See http://haali.su/mkv/codecs.pdf */
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mdecoder->codec_context->extradata_size = media_type->ExtraDataSize + 8;
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mdecoder->codec_context->extradata = malloc(mdecoder->codec_context->extradata_size);
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ZeroMemory(mdecoder->codec_context->extradata, mdecoder->codec_context->extradata_size);
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p = mdecoder->codec_context->extradata;
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*p++ = 1; /* Reserved? */
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*p++ = media_type->ExtraData[8]; /* Profile */
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*p++ = 0; /* Profile */
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*p++ = media_type->ExtraData[12]; /* Level */
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*p++ = 0xff; /* Flag? */
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*p++ = 0xe0 | 0x01; /* Reserved | #sps */
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s = media_type->ExtraData + 20;
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size = ((UINT32)(*s)) * 256 + ((UINT32)(*(s + 1)));
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memcpy(p, s, size + 2);
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s += size + 2;
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p += size + 2;
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*p++ = 1; /* #pps */
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size = ((UINT32)(*s)) * 256 + ((UINT32)(*(s + 1)));
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memcpy(p, s, size + 2);
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}
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else
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{
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/* Add a padding to avoid invalid memory read in some codec */
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mdecoder->codec_context->extradata_size = media_type->ExtraDataSize + 8;
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mdecoder->codec_context->extradata = malloc(mdecoder->codec_context->extradata_size);
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ZeroMemory(mdecoder->codec_context->extradata, mdecoder->codec_context->extradata_size);
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memcpy(mdecoder->codec_context->extradata, media_type->ExtraData, media_type->ExtraDataSize);
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memset(mdecoder->codec_context->extradata + media_type->ExtraDataSize, 0, 8);
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}
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}
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if(mdecoder->codec->capabilities & CODEC_CAP_TRUNCATED)
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mdecoder->codec_context->flags |= CODEC_FLAG_TRUNCATED;
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return TRUE;
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}
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static BOOL tsmf_ffmpeg_prepare(ITSMFDecoder *decoder)
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{
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TSMFFFmpegDecoder *mdecoder = (TSMFFFmpegDecoder *) decoder;
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if(avcodec_open2(mdecoder->codec_context, mdecoder->codec, NULL) < 0)
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{
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CLOG_ERR("avcodec_open2 failed.");
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return FALSE;
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}
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mdecoder->prepared = 1;
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return TRUE;
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}
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static BOOL tsmf_ffmpeg_set_format(ITSMFDecoder *decoder, TS_AM_MEDIA_TYPE *media_type)
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{
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TSMFFFmpegDecoder *mdecoder = (TSMFFFmpegDecoder *) decoder;
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switch(media_type->MajorType)
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{
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case TSMF_MAJOR_TYPE_VIDEO:
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mdecoder->media_type = AVMEDIA_TYPE_VIDEO;
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break;
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case TSMF_MAJOR_TYPE_AUDIO:
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mdecoder->media_type = AVMEDIA_TYPE_AUDIO;
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break;
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default:
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return FALSE;
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}
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switch(media_type->SubType)
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{
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case TSMF_SUB_TYPE_WVC1:
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mdecoder->codec_id = AV_CODEC_ID_VC1;
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break;
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case TSMF_SUB_TYPE_WMA2:
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mdecoder->codec_id = AV_CODEC_ID_WMAV2;
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break;
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case TSMF_SUB_TYPE_WMA9:
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mdecoder->codec_id = AV_CODEC_ID_WMAPRO;
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break;
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case TSMF_SUB_TYPE_MP3:
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mdecoder->codec_id = AV_CODEC_ID_MP3;
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break;
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case TSMF_SUB_TYPE_MP2A:
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mdecoder->codec_id = AV_CODEC_ID_MP2;
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break;
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case TSMF_SUB_TYPE_MP2V:
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mdecoder->codec_id = AV_CODEC_ID_MPEG2VIDEO;
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break;
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case TSMF_SUB_TYPE_WMV3:
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mdecoder->codec_id = AV_CODEC_ID_WMV3;
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break;
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case TSMF_SUB_TYPE_AAC:
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mdecoder->codec_id = AV_CODEC_ID_AAC;
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/* For AAC the pFormat is a HEAACWAVEINFO struct, and the codec data
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is at the end of it. See
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http://msdn.microsoft.com/en-us/library/dd757806.aspx */
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if(media_type->ExtraData)
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{
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media_type->ExtraData += 12;
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media_type->ExtraDataSize -= 12;
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}
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break;
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case TSMF_SUB_TYPE_H264:
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case TSMF_SUB_TYPE_AVC1:
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mdecoder->codec_id = AV_CODEC_ID_H264;
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break;
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case TSMF_SUB_TYPE_AC3:
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mdecoder->codec_id = AV_CODEC_ID_AC3;
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break;
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default:
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return FALSE;
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}
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if(!tsmf_ffmpeg_init_context(decoder))
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return FALSE;
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if(!tsmf_ffmpeg_init_stream(decoder, media_type))
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return FALSE;
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if(!tsmf_ffmpeg_prepare(decoder))
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return FALSE;
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return TRUE;
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}
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static BOOL tsmf_ffmpeg_decode_video(ITSMFDecoder *decoder, const BYTE *data, UINT32 data_size, UINT32 extensions)
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{
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TSMFFFmpegDecoder *mdecoder = (TSMFFFmpegDecoder *) decoder;
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int decoded;
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int len;
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AVFrame *frame;
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BOOL ret = TRUE;
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#if LIBAVCODEC_VERSION_MAJOR < 52 || (LIBAVCODEC_VERSION_MAJOR == 52 && LIBAVCODEC_VERSION_MINOR <= 20)
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len = avcodec_decode_video(mdecoder->codec_context, mdecoder->frame, &decoded, data, data_size);
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#else
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{
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AVPacket pkt;
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av_init_packet(&pkt);
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pkt.data = (BYTE *) data;
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pkt.size = data_size;
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if(extensions & TSMM_SAMPLE_EXT_CLEANPOINT)
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pkt.flags |= AV_PKT_FLAG_KEY;
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len = avcodec_decode_video2(mdecoder->codec_context, mdecoder->frame, &decoded, &pkt);
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}
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#endif
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if(len < 0)
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{
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CLOG_ERR("data_size %d, avcodec_decode_video failed (%d)", data_size, len);
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ret = FALSE;
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}
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else
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if(!decoded)
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{
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CLOG_ERR("data_size %d, no frame is decoded.", data_size);
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ret = FALSE;
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}
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else
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{
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DEBUG_TSMF("linesize[0] %d linesize[1] %d linesize[2] %d linesize[3] %d "
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"pix_fmt %d width %d height %d",
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mdecoder->frame->linesize[0], mdecoder->frame->linesize[1],
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mdecoder->frame->linesize[2], mdecoder->frame->linesize[3],
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mdecoder->codec_context->pix_fmt,
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mdecoder->codec_context->width, mdecoder->codec_context->height);
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mdecoder->decoded_size = avpicture_get_size(mdecoder->codec_context->pix_fmt,
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mdecoder->codec_context->width, mdecoder->codec_context->height);
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mdecoder->decoded_data = malloc(mdecoder->decoded_size);
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ZeroMemory(mdecoder->decoded_data, mdecoder->decoded_size);
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frame = avcodec_alloc_frame();
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avpicture_fill((AVPicture *) frame, mdecoder->decoded_data,
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mdecoder->codec_context->pix_fmt,
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mdecoder->codec_context->width, mdecoder->codec_context->height);
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av_picture_copy((AVPicture *) frame, (AVPicture *) mdecoder->frame,
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mdecoder->codec_context->pix_fmt,
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mdecoder->codec_context->width, mdecoder->codec_context->height);
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av_free(frame);
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}
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return ret;
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}
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static BOOL tsmf_ffmpeg_decode_audio(ITSMFDecoder *decoder, const BYTE *data, UINT32 data_size, UINT32 extensions)
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{
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TSMFFFmpegDecoder *mdecoder = (TSMFFFmpegDecoder *) decoder;
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int len;
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int frame_size;
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UINT32 src_size;
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const BYTE *src;
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BYTE *dst;
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int dst_offset;
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#if 0
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LLOGLN(0, ("tsmf_ffmpeg_decode_audio: data_size %d", data_size));
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int i;
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for(i = 0; i < data_size; i++)
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{
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LLOG(0, ("%02X ", data[i]));
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if(i % 16 == 15)
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LLOG(0, ("\n"));
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}
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LLOG(0, ("\n"));
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#endif
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if(mdecoder->decoded_size_max == 0)
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mdecoder->decoded_size_max = MAX_AUDIO_FRAME_SIZE + 16;
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mdecoder->decoded_data = malloc(mdecoder->decoded_size_max);
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ZeroMemory(mdecoder->decoded_data, mdecoder->decoded_size_max);
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/* align the memory for SSE2 needs */
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dst = (BYTE *)(((uintptr_t) mdecoder->decoded_data + 15) & ~ 0x0F);
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dst_offset = dst - mdecoder->decoded_data;
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src = data;
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src_size = data_size;
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while(src_size > 0)
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{
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/* Ensure enough space for decoding */
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if(mdecoder->decoded_size_max - mdecoder->decoded_size < MAX_AUDIO_FRAME_SIZE)
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{
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mdecoder->decoded_size_max = mdecoder->decoded_size_max * 2 + 16;
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mdecoder->decoded_data = realloc(mdecoder->decoded_data, mdecoder->decoded_size_max);
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dst = (BYTE *)(((uintptr_t)mdecoder->decoded_data + 15) & ~ 0x0F);
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if(dst - mdecoder->decoded_data != dst_offset)
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{
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/* re-align the memory if the alignment has changed after realloc */
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memmove(dst, mdecoder->decoded_data + dst_offset, mdecoder->decoded_size);
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dst_offset = dst - mdecoder->decoded_data;
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}
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dst += mdecoder->decoded_size;
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}
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frame_size = mdecoder->decoded_size_max - mdecoder->decoded_size;
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#if LIBAVCODEC_VERSION_MAJOR < 52 || (LIBAVCODEC_VERSION_MAJOR == 52 && LIBAVCODEC_VERSION_MINOR <= 20)
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len = avcodec_decode_audio2(mdecoder->codec_context,
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(int16_t *) dst, &frame_size, src, src_size);
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#else
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{
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AVFrame *decoded_frame = avcodec_alloc_frame();
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int got_frame = 0;
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AVPacket pkt;
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av_init_packet(&pkt);
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pkt.data = (BYTE *) src;
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pkt.size = src_size;
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len = avcodec_decode_audio4(mdecoder->codec_context, decoded_frame, &got_frame, &pkt);
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if(len >= 0 && got_frame)
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{
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frame_size = av_samples_get_buffer_size(NULL, mdecoder->codec_context->channels,
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decoded_frame->nb_samples, mdecoder->codec_context->sample_fmt, 1);
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memcpy(dst, decoded_frame->data[0], frame_size);
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}
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av_free(decoded_frame);
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}
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#endif
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if(len <= 0 || frame_size <= 0)
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{
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CLOG_ERR("error decoding");
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break;
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}
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src += len;
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src_size -= len;
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mdecoder->decoded_size += frame_size;
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dst += frame_size;
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}
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if(mdecoder->decoded_size == 0)
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{
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free(mdecoder->decoded_data);
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mdecoder->decoded_data = NULL;
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}
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else
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if(dst_offset)
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{
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/* move the aligned decoded data to original place */
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memmove(mdecoder->decoded_data, mdecoder->decoded_data + dst_offset, mdecoder->decoded_size);
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}
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DEBUG_TSMF("data_size %d decoded_size %d",
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data_size, mdecoder->decoded_size);
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return TRUE;
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}
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static BOOL tsmf_ffmpeg_decode(ITSMFDecoder *decoder, const BYTE *data, UINT32 data_size, UINT32 extensions)
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{
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TSMFFFmpegDecoder *mdecoder = (TSMFFFmpegDecoder *) decoder;
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if(mdecoder->decoded_data)
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{
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free(mdecoder->decoded_data);
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mdecoder->decoded_data = NULL;
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}
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mdecoder->decoded_size = 0;
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switch(mdecoder->media_type)
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{
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case AVMEDIA_TYPE_VIDEO:
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return tsmf_ffmpeg_decode_video(decoder, data, data_size, extensions);
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case AVMEDIA_TYPE_AUDIO:
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return tsmf_ffmpeg_decode_audio(decoder, data, data_size, extensions);
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default:
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CLOG_ERR("unknown media type.");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static BYTE *tsmf_ffmpeg_get_decoded_data(ITSMFDecoder *decoder, UINT32 *size)
|
|
{
|
|
BYTE *buf;
|
|
TSMFFFmpegDecoder *mdecoder = (TSMFFFmpegDecoder *) decoder;
|
|
*size = mdecoder->decoded_size;
|
|
buf = mdecoder->decoded_data;
|
|
mdecoder->decoded_data = NULL;
|
|
mdecoder->decoded_size = 0;
|
|
return buf;
|
|
}
|
|
|
|
static UINT32 tsmf_ffmpeg_get_decoded_format(ITSMFDecoder *decoder)
|
|
{
|
|
TSMFFFmpegDecoder *mdecoder = (TSMFFFmpegDecoder *) decoder;
|
|
switch(mdecoder->codec_context->pix_fmt)
|
|
{
|
|
case PIX_FMT_YUV420P:
|
|
return RDP_PIXFMT_I420;
|
|
default:
|
|
CLOG_ERR("unsupported pixel format %u",
|
|
mdecoder->codec_context->pix_fmt);
|
|
return (UINT32) -1;
|
|
}
|
|
}
|
|
|
|
static BOOL tsmf_ffmpeg_get_decoded_dimension(ITSMFDecoder *decoder, UINT32 *width, UINT32 *height)
|
|
{
|
|
TSMFFFmpegDecoder *mdecoder = (TSMFFFmpegDecoder *) decoder;
|
|
if(mdecoder->codec_context->width > 0 && mdecoder->codec_context->height > 0)
|
|
{
|
|
*width = mdecoder->codec_context->width;
|
|
*height = mdecoder->codec_context->height;
|
|
return TRUE;
|
|
}
|
|
else
|
|
{
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static void tsmf_ffmpeg_free(ITSMFDecoder *decoder)
|
|
{
|
|
TSMFFFmpegDecoder *mdecoder = (TSMFFFmpegDecoder *) decoder;
|
|
if(mdecoder->frame)
|
|
av_free(mdecoder->frame);
|
|
if(mdecoder->decoded_data)
|
|
free(mdecoder->decoded_data);
|
|
if(mdecoder->codec_context)
|
|
{
|
|
if(mdecoder->prepared)
|
|
avcodec_close(mdecoder->codec_context);
|
|
if(mdecoder->codec_context->extradata)
|
|
free(mdecoder->codec_context->extradata);
|
|
av_free(mdecoder->codec_context);
|
|
}
|
|
free(decoder);
|
|
}
|
|
|
|
static BOOL initialized = FALSE;
|
|
|
|
#ifdef STATIC_CHANNELS
|
|
#define freerdp_tsmf_client_decoder_subsystem_entry ffmpeg_freerdp_tsmf_client_decoder_subsystem_entry
|
|
#endif
|
|
|
|
ITSMFDecoder *freerdp_tsmf_client_decoder_subsystem_entry(void)
|
|
{
|
|
TSMFFFmpegDecoder *decoder;
|
|
if(!initialized)
|
|
{
|
|
avcodec_register_all();
|
|
initialized = TRUE;
|
|
}
|
|
CLOG_ERR( "TSMFDecoderEntry FFMPEG\n");
|
|
decoder = (TSMFFFmpegDecoder *) malloc(sizeof(TSMFFFmpegDecoder));
|
|
ZeroMemory(decoder, sizeof(TSMFFFmpegDecoder));
|
|
decoder->iface.SetFormat = tsmf_ffmpeg_set_format;
|
|
decoder->iface.Decode = tsmf_ffmpeg_decode;
|
|
decoder->iface.GetDecodedData = tsmf_ffmpeg_get_decoded_data;
|
|
decoder->iface.GetDecodedFormat = tsmf_ffmpeg_get_decoded_format;
|
|
decoder->iface.GetDecodedDimension = tsmf_ffmpeg_get_decoded_dimension;
|
|
decoder->iface.Free = tsmf_ffmpeg_free;
|
|
return (ITSMFDecoder *) decoder;
|
|
}
|