FreeRDP/channels/tsmf/client/ffmpeg/tsmf_ffmpeg.c

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/**
2012-10-09 07:02:04 +04:00
* FreeRDP: A Remote Desktop Protocol Implementation
* Video Redirection Virtual Channel - FFmpeg Decoder
*
* Copyright 2010-2011 Vic Lee
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <freerdp/utils/memory.h>
#include <freerdp/utils/event.h>
#include <freerdp/client/tsmf.h>
#include <libavcodec/avcodec.h>
#include "tsmf_constants.h"
#include "tsmf_decoder.h"
/* Compatibility with older FFmpeg */
#if LIBAVUTIL_VERSION_MAJOR < 50
#define AVMEDIA_TYPE_VIDEO 0
#define AVMEDIA_TYPE_AUDIO 1
#endif
typedef struct _TSMFFFmpegDecoder
{
ITSMFDecoder iface;
int media_type;
enum CodecID codec_id;
AVCodecContext* codec_context;
AVCodec* codec;
AVFrame* frame;
int prepared;
BYTE* decoded_data;
uint32 decoded_size;
uint32 decoded_size_max;
} TSMFFFmpegDecoder;
static BOOL tsmf_ffmpeg_init_context(ITSMFDecoder* decoder)
{
TSMFFFmpegDecoder* mdecoder = (TSMFFFmpegDecoder*) decoder;
mdecoder->codec_context = avcodec_alloc_context3(NULL);
if (!mdecoder->codec_context)
{
DEBUG_WARN("avcodec_alloc_context failed.");
return FALSE;
}
return TRUE;
}
static BOOL tsmf_ffmpeg_init_video_stream(ITSMFDecoder* decoder, const TS_AM_MEDIA_TYPE* media_type)
{
TSMFFFmpegDecoder* mdecoder = (TSMFFFmpegDecoder*) decoder;
mdecoder->codec_context->width = media_type->Width;
mdecoder->codec_context->height = media_type->Height;
mdecoder->codec_context->bit_rate = media_type->BitRate;
mdecoder->codec_context->time_base.den = media_type->SamplesPerSecond.Numerator;
mdecoder->codec_context->time_base.num = media_type->SamplesPerSecond.Denominator;
mdecoder->frame = avcodec_alloc_frame();
return TRUE;
}
static BOOL tsmf_ffmpeg_init_audio_stream(ITSMFDecoder* decoder, const TS_AM_MEDIA_TYPE* media_type)
{
TSMFFFmpegDecoder* mdecoder = (TSMFFFmpegDecoder*) decoder;
mdecoder->codec_context->sample_rate = media_type->SamplesPerSecond.Numerator;
mdecoder->codec_context->bit_rate = media_type->BitRate;
mdecoder->codec_context->channels = media_type->Channels;
mdecoder->codec_context->block_align = media_type->BlockAlign;
#ifdef AV_CPU_FLAG_SSE2
mdecoder->codec_context->dsp_mask = AV_CPU_FLAG_SSE2 | AV_CPU_FLAG_MMX2;
#else
#if LIBAVCODEC_VERSION_MAJOR < 53
mdecoder->codec_context->dsp_mask = FF_MM_SSE2 | FF_MM_MMXEXT;
#else
mdecoder->codec_context->dsp_mask = FF_MM_SSE2 | FF_MM_MMX2;
#endif
#endif
return TRUE;
}
static BOOL tsmf_ffmpeg_init_stream(ITSMFDecoder* decoder, const TS_AM_MEDIA_TYPE* media_type)
{
TSMFFFmpegDecoder* mdecoder = (TSMFFFmpegDecoder*) decoder;
uint32 size;
const BYTE* s;
BYTE* p;
mdecoder->codec = avcodec_find_decoder(mdecoder->codec_id);
if (!mdecoder->codec)
{
DEBUG_WARN("avcodec_find_decoder failed.");
return FALSE;
}
mdecoder->codec_context->codec_id = mdecoder->codec_id;
mdecoder->codec_context->codec_type = mdecoder->media_type;
if (mdecoder->media_type == AVMEDIA_TYPE_VIDEO)
{
if (!tsmf_ffmpeg_init_video_stream(decoder, media_type))
return FALSE;
}
else if (mdecoder->media_type == AVMEDIA_TYPE_AUDIO)
{
if (!tsmf_ffmpeg_init_audio_stream(decoder, media_type))
return FALSE;
}
if (media_type->ExtraData)
{
if (media_type->SubType == TSMF_SUB_TYPE_AVC1 &&
media_type->FormatType == TSMF_FORMAT_TYPE_MPEG2VIDEOINFO)
{
/* The extradata format that FFmpeg uses is following CodecPrivate in Matroska.
See http://haali.su/mkv/codecs.pdf */
mdecoder->codec_context->extradata_size = media_type->ExtraDataSize + 8;
mdecoder->codec_context->extradata = xzalloc(mdecoder->codec_context->extradata_size);
p = mdecoder->codec_context->extradata;
*p++ = 1; /* Reserved? */
*p++ = media_type->ExtraData[8]; /* Profile */
*p++ = 0; /* Profile */
*p++ = media_type->ExtraData[12]; /* Level */
*p++ = 0xff; /* Flag? */
*p++ = 0xe0 | 0x01; /* Reserved | #sps */
s = media_type->ExtraData + 20;
size = ((uint32)(*s)) * 256 + ((uint32)(*(s + 1)));
memcpy(p, s, size + 2);
s += size + 2;
p += size + 2;
*p++ = 1; /* #pps */
size = ((uint32)(*s)) * 256 + ((uint32)(*(s + 1)));
memcpy(p, s, size + 2);
}
else
{
/* Add a padding to avoid invalid memory read in some codec */
mdecoder->codec_context->extradata_size = media_type->ExtraDataSize + 8;
mdecoder->codec_context->extradata = xzalloc(mdecoder->codec_context->extradata_size);
memcpy(mdecoder->codec_context->extradata, media_type->ExtraData, media_type->ExtraDataSize);
memset(mdecoder->codec_context->extradata + media_type->ExtraDataSize, 0, 8);
}
}
if (mdecoder->codec->capabilities & CODEC_CAP_TRUNCATED)
mdecoder->codec_context->flags |= CODEC_FLAG_TRUNCATED;
return TRUE;
}
static BOOL tsmf_ffmpeg_prepare(ITSMFDecoder* decoder)
{
TSMFFFmpegDecoder* mdecoder = (TSMFFFmpegDecoder*) decoder;
if (avcodec_open2(mdecoder->codec_context, mdecoder->codec, NULL) < 0)
{
DEBUG_WARN("avcodec_open2 failed.");
return FALSE;
}
mdecoder->prepared = 1;
return TRUE;
}
static BOOL tsmf_ffmpeg_set_format(ITSMFDecoder* decoder, TS_AM_MEDIA_TYPE* media_type)
{
TSMFFFmpegDecoder* mdecoder = (TSMFFFmpegDecoder*) decoder;
switch (media_type->MajorType)
{
case TSMF_MAJOR_TYPE_VIDEO:
mdecoder->media_type = AVMEDIA_TYPE_VIDEO;
break;
case TSMF_MAJOR_TYPE_AUDIO:
mdecoder->media_type = AVMEDIA_TYPE_AUDIO;
break;
default:
return FALSE;
}
switch (media_type->SubType)
{
case TSMF_SUB_TYPE_WVC1:
mdecoder->codec_id = CODEC_ID_VC1;
break;
case TSMF_SUB_TYPE_WMA2:
mdecoder->codec_id = CODEC_ID_WMAV2;
break;
case TSMF_SUB_TYPE_WMA9:
mdecoder->codec_id = CODEC_ID_WMAPRO;
break;
case TSMF_SUB_TYPE_MP3:
mdecoder->codec_id = CODEC_ID_MP3;
break;
case TSMF_SUB_TYPE_MP2A:
mdecoder->codec_id = CODEC_ID_MP2;
break;
case TSMF_SUB_TYPE_MP2V:
mdecoder->codec_id = CODEC_ID_MPEG2VIDEO;
break;
case TSMF_SUB_TYPE_WMV3:
mdecoder->codec_id = CODEC_ID_WMV3;
break;
case TSMF_SUB_TYPE_AAC:
mdecoder->codec_id = CODEC_ID_AAC;
/* For AAC the pFormat is a HEAACWAVEINFO struct, and the codec data
is at the end of it. See
http://msdn.microsoft.com/en-us/library/dd757806.aspx */
if (media_type->ExtraData)
{
media_type->ExtraData += 12;
media_type->ExtraDataSize -= 12;
}
break;
case TSMF_SUB_TYPE_H264:
case TSMF_SUB_TYPE_AVC1:
mdecoder->codec_id = CODEC_ID_H264;
break;
case TSMF_SUB_TYPE_AC3:
mdecoder->codec_id = CODEC_ID_AC3;
break;
default:
return FALSE;
}
if (!tsmf_ffmpeg_init_context(decoder))
return FALSE;
if (!tsmf_ffmpeg_init_stream(decoder, media_type))
return FALSE;
if (!tsmf_ffmpeg_prepare(decoder))
return FALSE;
return TRUE;
}
static BOOL tsmf_ffmpeg_decode_video(ITSMFDecoder* decoder, const BYTE* data, uint32 data_size, uint32 extensions)
{
TSMFFFmpegDecoder* mdecoder = (TSMFFFmpegDecoder*) decoder;
int decoded;
int len;
AVFrame* frame;
BOOL ret = TRUE;
#if LIBAVCODEC_VERSION_MAJOR < 52 || (LIBAVCODEC_VERSION_MAJOR == 52 && LIBAVCODEC_VERSION_MINOR <= 20)
len = avcodec_decode_video(mdecoder->codec_context, mdecoder->frame, &decoded, data, data_size);
#else
{
AVPacket pkt;
av_init_packet(&pkt);
pkt.data = (BYTE*) data;
pkt.size = data_size;
if (extensions & TSMM_SAMPLE_EXT_CLEANPOINT)
pkt.flags |= AV_PKT_FLAG_KEY;
len = avcodec_decode_video2(mdecoder->codec_context, mdecoder->frame, &decoded, &pkt);
}
#endif
if (len < 0)
{
DEBUG_WARN("data_size %d, avcodec_decode_video failed (%d)", data_size, len);
ret = FALSE;
}
else if (!decoded)
{
DEBUG_WARN("data_size %d, no frame is decoded.", data_size);
ret = FALSE;
}
else
{
DEBUG_DVC("linesize[0] %d linesize[1] %d linesize[2] %d linesize[3] %d "
"pix_fmt %d width %d height %d",
mdecoder->frame->linesize[0], mdecoder->frame->linesize[1],
mdecoder->frame->linesize[2], mdecoder->frame->linesize[3],
mdecoder->codec_context->pix_fmt,
mdecoder->codec_context->width, mdecoder->codec_context->height);
mdecoder->decoded_size = avpicture_get_size(mdecoder->codec_context->pix_fmt,
mdecoder->codec_context->width, mdecoder->codec_context->height);
mdecoder->decoded_data = xzalloc(mdecoder->decoded_size);
frame = avcodec_alloc_frame();
avpicture_fill((AVPicture *) frame, mdecoder->decoded_data,
mdecoder->codec_context->pix_fmt,
mdecoder->codec_context->width, mdecoder->codec_context->height);
av_picture_copy((AVPicture *) frame, (AVPicture *) mdecoder->frame,
mdecoder->codec_context->pix_fmt,
mdecoder->codec_context->width, mdecoder->codec_context->height);
av_free(frame);
}
return ret;
}
static BOOL tsmf_ffmpeg_decode_audio(ITSMFDecoder* decoder, const BYTE* data, uint32 data_size, uint32 extensions)
{
TSMFFFmpegDecoder* mdecoder = (TSMFFFmpegDecoder*) decoder;
int len;
int frame_size;
uint32 src_size;
const BYTE* src;
BYTE* dst;
int dst_offset;
#if 0
LLOGLN(0, ("tsmf_ffmpeg_decode_audio: data_size %d", data_size));
int i;
for (i = 0; i < data_size; i++)
{
LLOG(0, ("%02X ", data[i]));
if (i % 16 == 15)
LLOG(0, ("\n"));
}
LLOG(0, ("\n"));
#endif
if (mdecoder->decoded_size_max == 0)
mdecoder->decoded_size_max = AVCODEC_MAX_AUDIO_FRAME_SIZE + 16;
mdecoder->decoded_data = xzalloc(mdecoder->decoded_size_max);
/* align the memory for SSE2 needs */
dst = (BYTE*) (((uintptr_t)mdecoder->decoded_data + 15) & ~ 0x0F);
dst_offset = dst - mdecoder->decoded_data;
src = data;
src_size = data_size;
while (src_size > 0)
{
/* Ensure enough space for decoding */
if (mdecoder->decoded_size_max - mdecoder->decoded_size < AVCODEC_MAX_AUDIO_FRAME_SIZE)
{
2011-09-20 18:03:05 +04:00
mdecoder->decoded_size_max = mdecoder->decoded_size_max * 2 + 16;
mdecoder->decoded_data = realloc(mdecoder->decoded_data, mdecoder->decoded_size_max);
dst = (BYTE*) (((uintptr_t)mdecoder->decoded_data + 15) & ~ 0x0F);
if (dst - mdecoder->decoded_data != dst_offset)
{
/* re-align the memory if the alignment has changed after realloc */
memmove(dst, mdecoder->decoded_data + dst_offset, mdecoder->decoded_size);
dst_offset = dst - mdecoder->decoded_data;
}
dst += mdecoder->decoded_size;
}
frame_size = mdecoder->decoded_size_max - mdecoder->decoded_size;
#if LIBAVCODEC_VERSION_MAJOR < 52 || (LIBAVCODEC_VERSION_MAJOR == 52 && LIBAVCODEC_VERSION_MINOR <= 20)
len = avcodec_decode_audio2(mdecoder->codec_context,
(int16_t*) dst, &frame_size, src, src_size);
#else
{
AVFrame* decoded_frame = avcodec_alloc_frame();
int got_frame = 0;
AVPacket pkt;
av_init_packet(&pkt);
pkt.data = (BYTE*) src;
pkt.size = src_size;
len = avcodec_decode_audio4(mdecoder->codec_context, decoded_frame, &got_frame, &pkt);
if (len >= 0 && got_frame)
{
frame_size = av_samples_get_buffer_size(NULL, mdecoder->codec_context->channels,
decoded_frame->nb_samples, mdecoder->codec_context->sample_fmt, 1);
memcpy(dst, decoded_frame->data[0], frame_size);
}
av_free(decoded_frame);
}
#endif
if (len <= 0 || frame_size <= 0)
{
DEBUG_WARN("error decoding");
break;
}
src += len;
src_size -= len;
mdecoder->decoded_size += frame_size;
dst += frame_size;
}
if (mdecoder->decoded_size == 0)
{
free(mdecoder->decoded_data);
mdecoder->decoded_data = NULL;
}
else if (dst_offset)
{
/* move the aligned decoded data to original place */
2011-09-20 18:03:05 +04:00
memmove(mdecoder->decoded_data, mdecoder->decoded_data + dst_offset, mdecoder->decoded_size);
}
DEBUG_DVC("data_size %d decoded_size %d",
data_size, mdecoder->decoded_size);
return TRUE;
}
static BOOL tsmf_ffmpeg_decode(ITSMFDecoder* decoder, const BYTE* data, uint32 data_size, uint32 extensions)
{
TSMFFFmpegDecoder* mdecoder = (TSMFFFmpegDecoder*) decoder;
if (mdecoder->decoded_data)
{
free(mdecoder->decoded_data);
mdecoder->decoded_data = NULL;
}
mdecoder->decoded_size = 0;
switch (mdecoder->media_type)
{
case AVMEDIA_TYPE_VIDEO:
return tsmf_ffmpeg_decode_video(decoder, data, data_size, extensions);
case AVMEDIA_TYPE_AUDIO:
return tsmf_ffmpeg_decode_audio(decoder, data, data_size, extensions);
default:
DEBUG_WARN("unknown media type.");
return FALSE;
}
}
static BYTE* tsmf_ffmpeg_get_decoded_data(ITSMFDecoder* decoder, uint32* size)
{
TSMFFFmpegDecoder* mdecoder = (TSMFFFmpegDecoder*) decoder;
BYTE* buf;
*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:
DEBUG_WARN("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;
ITSMFDecoder*
TSMFDecoderEntry(void)
{
TSMFFFmpegDecoder * decoder;
if (!initialized)
{
avcodec_register_all();
initialized = TRUE;
}
decoder = xnew(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;
}