本文整理汇总了C++中MediaDecoder::ProcessData方法的典型用法代码示例。如果您正苦于以下问题：C++ MediaDecoder::ProcessData方法的具体用法？C++ MediaDecoder::ProcessData怎么用？C++ MediaDecoder::ProcessData使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类MediaDecoder的用法示例。
在下文中一共展示了MediaDecoder::ProcessData方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: MediaCodec_Process
M4Err MediaCodec_Process(GenericCodec *codec, u32 TimeAvailable)
{
LPAUBUFFER AU;
Channel *ch;
char *cu_buf;
u32 cu_buf_size, mmlevel, deltaTS;
u32 first, entryTime, now, obj_time;
MediaDecoder *mdec = (MediaDecoder*)codec->decio;
M4Err e = M4OK;
/*if video codec muted don't decode
if audio codec muted we dispatch to keep sync in place*/
if (codec->Muted && (codec->type==M4ST_VISUAL) ) return M4OK;
entryTime = Term_GetTime(codec->odm->term);
/*fetch next AU in DTS order for this codec*/
Decoder_GetNextAU(codec, &ch, &AU);
/*no active channel return*/
if (!AU || !ch) {
/*if the codec is in EOS state, assume we're done*/
if (codec->Status == CODEC_EOS) {
/*if codec is reordering, try to flush it*/
if (codec->is_reordering) {
if ( LockCompositionUnit(codec, codec->last_unit_cts+1, &cu_buf, &cu_buf_size) == M4OutOfMem)
return M4OK;
e = mdec->ProcessData(mdec, NULL, 0, 0, cu_buf, &cu_buf_size, 0, 0);
if (e==M4OK) e = UnlockCompositionUnit(codec, codec->last_unit_cts+1, cu_buf_size);
}
MM_StopCodec(codec);
if (codec->CB) CB_SetEndOfStream(codec->CB);
}
/*if no data, and channel not buffering, ABORT CB buffer (data timeout or EOS not detectable)*/
else if (ch && !ch->BufferOn)
CB_AbortBuffering(codec->CB);
return M4OK;
}
/*get the object time*/
obj_time = CK_GetTime(codec->ck);
/*Media Time for media codecs is updated in the CB*/
if (!codec->CB) {
Channel_DropAU(ch);
return M4BadParam;
}
/*try to refill the full buffer*/
first = 1;
while (codec->CB->Capacity > codec->CB->UnitCount) {
/*set media processing level*/
mmlevel = MM_LEVEL_NORMAL;
/*SEEK: if the last frame had the same TS, we are seeking. Ask the codec to drop*/
if (!ch->skip_sl && codec->last_unit_cts && (codec->last_unit_cts == AU->CTS) && !ch->esd->dependsOnESID) {
mmlevel = MM_LEVEL_SEEK;
}
/*only perform drop in normal playback*/
else if (codec->CB->Status == CB_PLAY) {
if (!ch->skip_sl && (AU->CTS < obj_time)) {
/*extremely late, even if we decode the renderer will drop the frame
so set the level to drop*/
mmlevel = MM_LEVEL_DROP;
}
/*we are late according to the media manager*/
else if (codec->PriorityBoost) {
mmlevel = MM_LEVEL_VERY_LATE;
}
/*otherwise we must have an idea of the load in order to set the right level
use the composition buffer for that, only on the first frame*/
else if (first) {
//if the CB is almost empty set to very late
if (codec->CB->UnitCount <= codec->CB->Min+1) {
mmlevel = MM_LEVEL_VERY_LATE;
} else if (codec->CB->UnitCount * 2 <= codec->CB->Capacity) {
mmlevel = MM_LEVEL_LATE;
}
first = 0;
}
}
/*when using temporal scalability make sure we can decode*/
if (ch->esd->dependsOnESID && (codec->last_unit_dts > AU->DTS)){
// printf("SCALABLE STREAM DEAD!!\n");
goto drop;
}
if (ch->skip_sl) {
if (codec->bytes_per_sec) {
AU->CTS = codec->last_unit_cts + ch->ts_offset + codec->cur_audio_bytes * 1000 / codec->bytes_per_sec;
} else if (codec->fps) {
AU->CTS = codec->last_unit_cts + ch->ts_offset + (u32) (codec->cur_video_frames * 1000 / codec->fps);
}
}
if ( LockCompositionUnit(codec, AU->CTS, &cu_buf, &cu_buf_size) == M4OutOfMem)
return M4OK;
now = Term_GetTime(codec->odm->term);
e = mdec->ProcessData(mdec, AU->data, AU->dataLength,
//.........这里部分代码省略.........