1 #include "../../stdafx.h"
\r
3 #include "video_decoder.h"
\r
5 #include <common/memory/safe_ptr.h>
\r
7 #include <core/video_format.h>
\r
9 #include <core/producer/frame/basic_frame.h>
\r
10 #include <core/producer/frame/write_frame.h>
\r
11 #include <core/producer/frame/image_transform.h>
\r
13 #include <tbb/parallel_for.h>
\r
15 #include <algorithm>
\r
17 #if defined(_MSC_VER)
\r
18 #pragma warning (push)
\r
19 #pragma warning (disable : 4244)
\r
23 #define __STDC_CONSTANT_MACROS
\r
24 #define __STDC_LIMIT_MACROS
\r
25 #include <libswscale/swscale.h>
\r
26 #include <libavformat/avformat.h>
\r
28 #if defined(_MSC_VER)
\r
29 #pragma warning (pop)
\r
34 core::pixel_format::type get_pixel_format(PixelFormat pix_fmt)
\r
38 case PIX_FMT_BGRA: return core::pixel_format::bgra;
\r
39 case PIX_FMT_ARGB: return core::pixel_format::argb;
\r
40 case PIX_FMT_RGBA: return core::pixel_format::rgba;
\r
41 case PIX_FMT_ABGR: return core::pixel_format::abgr;
\r
42 case PIX_FMT_YUV444P: return core::pixel_format::ycbcr;
\r
43 case PIX_FMT_YUV422P: return core::pixel_format::ycbcr;
\r
44 case PIX_FMT_YUV420P: return core::pixel_format::ycbcr;
\r
45 case PIX_FMT_YUV411P: return core::pixel_format::ycbcr;
\r
46 case PIX_FMT_YUV410P: return core::pixel_format::ycbcr;
\r
47 case PIX_FMT_YUVA420P: return core::pixel_format::ycbcra;
\r
48 default: return core::pixel_format::invalid;
\r
52 core::pixel_format_desc get_pixel_format_desc(PixelFormat pix_fmt, size_t width, size_t height)
\r
55 AVPicture dummy_pict;
\r
56 avpicture_fill(&dummy_pict, nullptr, pix_fmt, width, height);
\r
58 core::pixel_format_desc desc;
\r
59 desc.pix_fmt = get_pixel_format(pix_fmt);
\r
61 switch(desc.pix_fmt)
\r
63 case core::pixel_format::bgra:
\r
64 case core::pixel_format::argb:
\r
65 case core::pixel_format::rgba:
\r
66 case core::pixel_format::abgr:
\r
68 desc.planes.push_back(core::pixel_format_desc::plane(dummy_pict.linesize[0]/4, height, 4));
\r
71 case core::pixel_format::ycbcr:
\r
72 case core::pixel_format::ycbcra:
\r
74 // Find chroma height
\r
75 size_t size2 = dummy_pict.data[2] - dummy_pict.data[1];
\r
76 size_t h2 = size2/dummy_pict.linesize[1];
\r
78 desc.planes.push_back(core::pixel_format_desc::plane(dummy_pict.linesize[0], height, 1));
\r
79 desc.planes.push_back(core::pixel_format_desc::plane(dummy_pict.linesize[1], h2, 1));
\r
80 desc.planes.push_back(core::pixel_format_desc::plane(dummy_pict.linesize[2], h2, 1));
\r
82 if(desc.pix_fmt == core::pixel_format::ycbcra)
\r
83 desc.planes.push_back(core::pixel_format_desc::plane(dummy_pict.linesize[3], height, 1));
\r
87 desc.pix_fmt = core::pixel_format::invalid;
\r
92 struct video_decoder::implementation : boost::noncopyable
\r
94 std::shared_ptr<core::frame_factory> frame_factory_;
\r
95 std::shared_ptr<SwsContext> sws_context_;
\r
97 AVCodecContext* codec_context_;
\r
101 const PixelFormat pix_fmt_;
\r
102 core::pixel_format_desc desc_;
\r
105 explicit implementation(AVCodecContext* codec_context, const safe_ptr<core::frame_factory>& frame_factory)
\r
106 : frame_factory_(frame_factory)
\r
107 , codec_context_(codec_context)
\r
108 , width_(codec_context_->width)
\r
109 , height_(codec_context_->height)
\r
110 , pix_fmt_(codec_context_->pix_fmt)
\r
111 , desc_(get_pixel_format_desc(pix_fmt_, width_, height_))
\r
113 if(desc_.pix_fmt == core::pixel_format::invalid)
\r
115 CASPAR_LOG(warning) << "Hardware accelerated color transform not supported.";
\r
117 desc_ = get_pixel_format_desc(PIX_FMT_BGRA, width_, height_);
\r
119 sws_context_.reset(sws_getContext(width_, height_, pix_fmt_, width_, height_, PIX_FMT_BGRA, SWS_BILINEAR, nullptr, nullptr, ¶m), sws_freeContext);
\r
121 BOOST_THROW_EXCEPTION(operation_failed() <<
\r
122 msg_info("Could not create software scaling context.") <<
\r
123 boost::errinfo_api_function("sws_getContext"));
\r
127 safe_ptr<core::write_frame> execute(void* tag, const aligned_buffer& video_packet)
\r
129 safe_ptr<AVFrame> decoded_frame(avcodec_alloc_frame(), av_free);
\r
131 int frame_finished = 0;
\r
132 const int result = avcodec_decode_video(codec_context_, decoded_frame.get(), &frame_finished, video_packet.data(), video_packet.size());
\r
135 BOOST_THROW_EXCEPTION(invalid_operation() << msg_info("avcodec_decode_video failed"));
\r
137 auto write = frame_factory_->create_frame(tag, desc_);
\r
138 if(sws_context_ == nullptr)
\r
140 tbb::parallel_for(0, static_cast<int>(desc_.planes.size()), 1, [&](int n)
\r
142 auto plane = desc_.planes[n];
\r
143 auto result = write->image_data(n).begin();
\r
144 auto decoded = decoded_frame->data[n];
\r
145 auto decoded_linesize = decoded_frame->linesize[n];
\r
147 tbb::parallel_for(0, static_cast<int>(desc_.planes[n].height), 1, [&](int y)
\r
149 std::copy_n(decoded + y*decoded_linesize, plane.linesize, result + y*plane.linesize);
\r
155 safe_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);
\r
156 avcodec_get_frame_defaults(av_frame.get());
\r
157 avpicture_fill(reinterpret_cast<AVPicture*>(av_frame.get()), write->image_data().begin(), PIX_FMT_BGRA, width_, height_);
\r
159 sws_scale(sws_context_.get(), decoded_frame->data, decoded_frame->linesize, 0, height_, av_frame->data, av_frame->linesize);
\r
162 if(codec_context_->codec_id == CODEC_ID_DVVIDEO && frame_factory_->get_video_format_desc().mode == core::video_mode::upper)
\r
163 write->get_image_transform().set_fill_translation(0.0f, 1.0/static_cast<double>(height_));
\r
169 video_decoder::video_decoder(AVCodecContext* codec_context, const safe_ptr<core::frame_factory>& frame_factory) : impl_(new implementation(codec_context, frame_factory)){}
\r
170 safe_ptr<core::write_frame> video_decoder::execute(void* tag, const aligned_buffer& video_packet){return impl_->execute(tag, video_packet);}
\r