160 lines
3.6 KiB
C++
160 lines
3.6 KiB
C++
#include "mkv_theora_decoder.h"
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#include "../nsmkv/Lacing.h"
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#include "../nsmkv/Cluster.h"
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#include <mmsystem.h>
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int MKVDecoder::CreateVideoDecoder(const char *codec_id, const nsmkv::TrackEntryData *track_entry_data, const nsmkv::VideoData *video_data, ifc_mkvvideodecoder **decoder)
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{
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if (!strcmp(codec_id, "V_THEORA"))
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{
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MKVTheora *theora = new MKVTheora(video_data);
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nsmkv::LacingState lacing_state;
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if (nsmkv::Lacing::GetState(nsmkv::BlockBinary::XIPH_LACING, (const uint8_t *)track_entry_data->codec_private, track_entry_data->codec_private_len, &lacing_state))
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{
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const uint8_t *frame;
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size_t frame_len;
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uint16_t frame_number=0;
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while (nsmkv::Lacing::GetFrame(frame_number, (const uint8_t *)track_entry_data->codec_private, track_entry_data->codec_private_len, &frame, &frame_len, &lacing_state))
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{
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ogg_packet packet = {const_cast<uint8_t *>(frame), (long)frame_len, (frame_number==0), 0, 0 /*-1?*/, theora->packet_number++};
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int ret = th_decode_headerin(&theora->info, &theora->comment, &theora->setup, &packet);
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if (ret < 0)
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goto bail;
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frame_number++;
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}
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theora->decoder = th_decode_alloc(&theora->info, theora->setup);
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if (!theora->decoder)
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goto bail;
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*decoder = theora;
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return CREATEDECODER_SUCCESS;
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}
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bail:
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delete theora;
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return CREATEDECODER_FAILURE;
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}
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else
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{
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return CREATEDECODER_NOT_MINE;
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}
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}
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#define CBCLASS MKVDecoder
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START_DISPATCH;
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CB(CREATE_VIDEO_DECODER, CreateVideoDecoder)
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END_DISPATCH;
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#undef CBCLASS
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MKVTheora::MKVTheora(const nsmkv::VideoData *video_data) : video_data(video_data)
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{
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th_info_init(&info);
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memset(&comment, 0, sizeof(comment));
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setup=0;
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packet_number=0;
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frame_ready=false;
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flushing=false;
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}
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int MKVTheora::GetOutputProperties(int *x, int *y, int *color_format, double *aspect_ratio)
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{
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if (decoder)
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{
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th_ycbcr_buffer buffer;
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if (th_decode_ycbcr_out(decoder, buffer) == 0)
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{
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*x = buffer[0].width;
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*y = buffer[0].height;
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*aspect_ratio=1.0;
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*color_format = mmioFOURCC('Y','V','1','2');
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return MKV_SUCCESS;
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}
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}
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return MKV_FAILURE;
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}
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int MKVTheora::DecodeBlock(const void *inputBuffer, size_t inputBufferBytes, uint64_t timestamp)
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{
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if (decoder)
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{
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ogg_packet packet = {(uint8_t *)inputBuffer, (long)inputBufferBytes, 0, 0, 0 -1, packet_number++};
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if (flushing)
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{
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if (th_packet_iskeyframe(&packet))
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{
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flushing=false;
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}
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else
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return MKV_FAILURE;
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}
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if (th_decode_packetin(decoder, &packet, 0) == 0)
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frame_ready=true;
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last_timestamp=timestamp;
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return MKV_SUCCESS;
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}
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return MKV_FAILURE;
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}
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void MKVTheora::Flush()
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{
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packet_number = 0;
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flushing=true;
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}
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int MKVTheora::GetPicture(void **data, void **decoder_data, uint64_t *timestamp)
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{
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if (decoder && frame_ready)
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{
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th_ycbcr_buffer buffer;
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if (th_decode_ycbcr_out(decoder, buffer) == 0)
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{
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planes.y.baseAddr = buffer[0].data;
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planes.y.rowBytes = buffer[0].stride;
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planes.u.baseAddr = buffer[1].data;
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planes.u.rowBytes = buffer[1].stride;
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planes.v.baseAddr = buffer[2].data;
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planes.v.rowBytes = buffer[2].stride;
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*data = &planes;
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*decoder_data = 0;
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*timestamp = last_timestamp;
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frame_ready = false;
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return MKV_SUCCESS;
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}
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}
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return MKV_FAILURE;
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}
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void MKVTheora::FreePicture(void *data, void *decoder_data)
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{
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}
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void MKVTheora::HurryUp(int state)
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{
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}
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void MKVTheora::Close()
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{
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if (decoder)
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th_decode_free(decoder);
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delete this;
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}
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#define CBCLASS MKVTheora
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START_DISPATCH;
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CB(GET_OUTPUT_PROPERTIES, GetOutputProperties)
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CB(DECODE_BLOCK, DecodeBlock)
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VCB(FLUSH, Flush)
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CB(GET_PICTURE, GetPicture)
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VCB(FREE_PICTURE, FreePicture)
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VCB(HURRY_UP, HurryUp)
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VCB(CLOSE, Close)
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END_DISPATCH;
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#undef CBCLASS
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