Java Code Examples for com.google.android.exoplayer2.util.ParsableBitArray#bitsLeft()
The following examples show how to use
com.google.android.exoplayer2.util.ParsableBitArray#bitsLeft() .
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Example 1
| Source File: DtsUtil.java From Telegram with GNU General Public License v2.0 | 5 votes |
|
private static ParsableBitArray getNormalizedFrameHeader(byte[] frameHeader) {
if (frameHeader[0] == FIRST_BYTE_BE) {
// The frame is already 16-bit mode, big endian.
return new ParsableBitArray(frameHeader);
}
// Data is not normalized, but we don't want to modify frameHeader.
frameHeader = Arrays.copyOf(frameHeader, frameHeader.length);
if (isLittleEndianFrameHeader(frameHeader)) {
// Change endianness.
for (int i = 0; i < frameHeader.length - 1; i += 2) {
byte temp = frameHeader[i];
frameHeader[i] = frameHeader[i + 1];
frameHeader[i + 1] = temp;
}
}
ParsableBitArray frameBits = new ParsableBitArray(frameHeader);
if (frameHeader[0] == (byte) (SYNC_VALUE_14B_BE >> 24)) {
// Discard the 2 most significant bits of each 16 bit word.
ParsableBitArray scratchBits = new ParsableBitArray(frameHeader);
while (scratchBits.bitsLeft() >= 16) {
scratchBits.skipBits(2);
frameBits.putInt(scratchBits.readBits(14), 14);
}
}
frameBits.reset(frameHeader);
return frameBits;
}
Example 2
| Source File: DtsUtil.java From MediaSDK with Apache License 2.0 | 5 votes |
|
private static ParsableBitArray getNormalizedFrameHeader(byte[] frameHeader) {
if (frameHeader[0] == FIRST_BYTE_BE) {
// The frame is already 16-bit mode, big endian.
return new ParsableBitArray(frameHeader);
}
// Data is not normalized, but we don't want to modify frameHeader.
frameHeader = Arrays.copyOf(frameHeader, frameHeader.length);
if (isLittleEndianFrameHeader(frameHeader)) {
// Change endianness.
for (int i = 0; i < frameHeader.length - 1; i += 2) {
byte temp = frameHeader[i];
frameHeader[i] = frameHeader[i + 1];
frameHeader[i + 1] = temp;
}
}
ParsableBitArray frameBits = new ParsableBitArray(frameHeader);
if (frameHeader[0] == (byte) (SYNC_VALUE_14B_BE >> 24)) {
// Discard the 2 most significant bits of each 16 bit word.
ParsableBitArray scratchBits = new ParsableBitArray(frameHeader);
while (scratchBits.bitsLeft() >= 16) {
scratchBits.skipBits(2);
frameBits.putInt(scratchBits.readBits(14), 14);
}
}
frameBits.reset(frameHeader);
return frameBits;
}
Example 3
| Source File: LatmReader.java From TelePlus-Android with GNU General Public License v2.0 | 5 votes |
|
private int parseAudioSpecificConfig(ParsableBitArray data) throws ParserException {
int bitsLeft = data.bitsLeft();
Pair<Integer, Integer> config = CodecSpecificDataUtil.parseAacAudioSpecificConfig(data, true);
sampleRateHz = config.first;
channelCount = config.second;
return bitsLeft - data.bitsLeft();
}
Example 4
| Source File: LatmReader.java From Telegram with GNU General Public License v2.0 | 5 votes |
|
private int parseAudioSpecificConfig(ParsableBitArray data) throws ParserException {
int bitsLeft = data.bitsLeft();
Pair<Integer, Integer> config = CodecSpecificDataUtil.parseAacAudioSpecificConfig(data, true);
sampleRateHz = config.first;
channelCount = config.second;
return bitsLeft - data.bitsLeft();
}
Example 5
| Source File: DtsUtil.java From TelePlus-Android with GNU General Public License v2.0 | 5 votes |
|
private static ParsableBitArray getNormalizedFrameHeader(byte[] frameHeader) {
if (frameHeader[0] == FIRST_BYTE_BE) {
// The frame is already 16-bit mode, big endian.
return new ParsableBitArray(frameHeader);
}
// Data is not normalized, but we don't want to modify frameHeader.
frameHeader = Arrays.copyOf(frameHeader, frameHeader.length);
if (isLittleEndianFrameHeader(frameHeader)) {
// Change endianness.
for (int i = 0; i < frameHeader.length - 1; i += 2) {
byte temp = frameHeader[i];
frameHeader[i] = frameHeader[i + 1];
frameHeader[i + 1] = temp;
}
}
ParsableBitArray frameBits = new ParsableBitArray(frameHeader);
if (frameHeader[0] == (byte) (SYNC_VALUE_14B_BE >> 24)) {
// Discard the 2 most significant bits of each 16 bit word.
ParsableBitArray scratchBits = new ParsableBitArray(frameHeader);
while (scratchBits.bitsLeft() >= 16) {
scratchBits.skipBits(2);
frameBits.putInt(scratchBits.readBits(14), 14);
}
}
frameBits.reset(frameHeader);
return frameBits;
}
Example 6
| Source File: LatmReader.java From TelePlus-Android with GNU General Public License v2.0 | 5 votes |
|
private int parseAudioSpecificConfig(ParsableBitArray data) throws ParserException {
int bitsLeft = data.bitsLeft();
Pair<Integer, Integer> config = CodecSpecificDataUtil.parseAacAudioSpecificConfig(data, true);
sampleRateHz = config.first;
channelCount = config.second;
return bitsLeft - data.bitsLeft();
}
Example 7
| Source File: LatmReader.java From MediaSDK with Apache License 2.0 | 5 votes |
|
private int parseAudioSpecificConfig(ParsableBitArray data) throws ParserException {
int bitsLeft = data.bitsLeft();
Pair<Integer, Integer> config = CodecSpecificDataUtil.parseAacAudioSpecificConfig(data, true);
sampleRateHz = config.first;
channelCount = config.second;
return bitsLeft - data.bitsLeft();
}
Example 8
| Source File: DtsUtil.java From Telegram-FOSS with GNU General Public License v2.0 | 5 votes |
|
private static ParsableBitArray getNormalizedFrameHeader(byte[] frameHeader) {
if (frameHeader[0] == FIRST_BYTE_BE) {
// The frame is already 16-bit mode, big endian.
return new ParsableBitArray(frameHeader);
}
// Data is not normalized, but we don't want to modify frameHeader.
frameHeader = Arrays.copyOf(frameHeader, frameHeader.length);
if (isLittleEndianFrameHeader(frameHeader)) {
// Change endianness.
for (int i = 0; i < frameHeader.length - 1; i += 2) {
byte temp = frameHeader[i];
frameHeader[i] = frameHeader[i + 1];
frameHeader[i + 1] = temp;
}
}
ParsableBitArray frameBits = new ParsableBitArray(frameHeader);
if (frameHeader[0] == (byte) (SYNC_VALUE_14B_BE >> 24)) {
// Discard the 2 most significant bits of each 16 bit word.
ParsableBitArray scratchBits = new ParsableBitArray(frameHeader);
while (scratchBits.bitsLeft() >= 16) {
scratchBits.skipBits(2);
frameBits.putInt(scratchBits.readBits(14), 14);
}
}
frameBits.reset(frameHeader);
return frameBits;
}
Example 9
| Source File: DtsUtil.java From TelePlus-Android with GNU General Public License v2.0 | 5 votes |
|
private static ParsableBitArray getNormalizedFrameHeader(byte[] frameHeader) {
if (frameHeader[0] == FIRST_BYTE_BE) {
// The frame is already 16-bit mode, big endian.
return new ParsableBitArray(frameHeader);
}
// Data is not normalized, but we don't want to modify frameHeader.
frameHeader = Arrays.copyOf(frameHeader, frameHeader.length);
if (isLittleEndianFrameHeader(frameHeader)) {
// Change endianness.
for (int i = 0; i < frameHeader.length - 1; i += 2) {
byte temp = frameHeader[i];
frameHeader[i] = frameHeader[i + 1];
frameHeader[i + 1] = temp;
}
}
ParsableBitArray frameBits = new ParsableBitArray(frameHeader);
if (frameHeader[0] == (byte) (SYNC_VALUE_14B_BE >> 24)) {
// Discard the 2 most significant bits of each 16 bit word.
ParsableBitArray scratchBits = new ParsableBitArray(frameHeader);
while (scratchBits.bitsLeft() >= 16) {
scratchBits.skipBits(2);
frameBits.putInt(scratchBits.readBits(14), 14);
}
}
frameBits.reset(frameHeader);
return frameBits;
}
Example 10
| Source File: LatmReader.java From Telegram-FOSS with GNU General Public License v2.0 | 5 votes |
|
private int parseAudioSpecificConfig(ParsableBitArray data) throws ParserException {
int bitsLeft = data.bitsLeft();
Pair<Integer, Integer> config = CodecSpecificDataUtil.parseAacAudioSpecificConfig(data, true);
sampleRateHz = config.first;
channelCount = config.second;
return bitsLeft - data.bitsLeft();
}
Example 11
| Source File: DvbParser.java From TelePlus-Android with GNU General Public License v2.0 | 4 votes |
|
/**
* Decodes a subtitling packet, returning a list of parsed {@link Cue}s.
*
* @param data The subtitling packet data to decode.
* @param limit The limit in {@code data} at which to stop decoding.
* @return The parsed {@link Cue}s.
*/
public List<Cue> decode(byte[] data, int limit) {
// Parse the input data.
ParsableBitArray dataBitArray = new ParsableBitArray(data, limit);
while (dataBitArray.bitsLeft() >= 48 // sync_byte (8) + segment header (40)
&& dataBitArray.readBits(8) == 0x0F) {
parseSubtitlingSegment(dataBitArray, subtitleService);
}
if (subtitleService.pageComposition == null) {
return Collections.emptyList();
}
// Update the canvas bitmap if necessary.
DisplayDefinition displayDefinition = subtitleService.displayDefinition != null
? subtitleService.displayDefinition : defaultDisplayDefinition;
if (bitmap == null || displayDefinition.width + 1 != bitmap.getWidth()
|| displayDefinition.height + 1 != bitmap.getHeight()) {
bitmap = Bitmap.createBitmap(displayDefinition.width + 1, displayDefinition.height + 1,
Bitmap.Config.ARGB_8888);
canvas.setBitmap(bitmap);
}
// Build the cues.
List<Cue> cues = new ArrayList<>();
SparseArray<PageRegion> pageRegions = subtitleService.pageComposition.regions;
for (int i = 0; i < pageRegions.size(); i++) {
PageRegion pageRegion = pageRegions.valueAt(i);
int regionId = pageRegions.keyAt(i);
RegionComposition regionComposition = subtitleService.regions.get(regionId);
// Clip drawing to the current region and display definition window.
int baseHorizontalAddress = pageRegion.horizontalAddress
+ displayDefinition.horizontalPositionMinimum;
int baseVerticalAddress = pageRegion.verticalAddress
+ displayDefinition.verticalPositionMinimum;
int clipRight = Math.min(baseHorizontalAddress + regionComposition.width,
displayDefinition.horizontalPositionMaximum);
int clipBottom = Math.min(baseVerticalAddress + regionComposition.height,
displayDefinition.verticalPositionMaximum);
canvas.clipRect(baseHorizontalAddress, baseVerticalAddress, clipRight, clipBottom,
Region.Op.REPLACE);
ClutDefinition clutDefinition = subtitleService.cluts.get(regionComposition.clutId);
if (clutDefinition == null) {
clutDefinition = subtitleService.ancillaryCluts.get(regionComposition.clutId);
if (clutDefinition == null) {
clutDefinition = defaultClutDefinition;
}
}
SparseArray<RegionObject> regionObjects = regionComposition.regionObjects;
for (int j = 0; j < regionObjects.size(); j++) {
int objectId = regionObjects.keyAt(j);
RegionObject regionObject = regionObjects.valueAt(j);
ObjectData objectData = subtitleService.objects.get(objectId);
if (objectData == null) {
objectData = subtitleService.ancillaryObjects.get(objectId);
}
if (objectData != null) {
Paint paint = objectData.nonModifyingColorFlag ? null : defaultPaint;
paintPixelDataSubBlocks(objectData, clutDefinition, regionComposition.depth,
baseHorizontalAddress + regionObject.horizontalPosition,
baseVerticalAddress + regionObject.verticalPosition, paint, canvas);
}
}
if (regionComposition.fillFlag) {
int color;
if (regionComposition.depth == REGION_DEPTH_8_BIT) {
color = clutDefinition.clutEntries8Bit[regionComposition.pixelCode8Bit];
} else if (regionComposition.depth == REGION_DEPTH_4_BIT) {
color = clutDefinition.clutEntries4Bit[regionComposition.pixelCode4Bit];
} else {
color = clutDefinition.clutEntries2Bit[regionComposition.pixelCode2Bit];
}
fillRegionPaint.setColor(color);
canvas.drawRect(baseHorizontalAddress, baseVerticalAddress,
baseHorizontalAddress + regionComposition.width,
baseVerticalAddress + regionComposition.height,
fillRegionPaint);
}
Bitmap cueBitmap = Bitmap.createBitmap(bitmap, baseHorizontalAddress, baseVerticalAddress,
regionComposition.width, regionComposition.height);
cues.add(new Cue(cueBitmap, (float) baseHorizontalAddress / displayDefinition.width,
Cue.ANCHOR_TYPE_START, (float) baseVerticalAddress / displayDefinition.height,
Cue.ANCHOR_TYPE_START, (float) regionComposition.width / displayDefinition.width,
(float) regionComposition.height / displayDefinition.height));
canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR);
}
return cues;
}
Example 12
| Source File: DvbParser.java From Telegram with GNU General Public License v2.0 | 4 votes |
|
/**
* Draws a pixel data sub-block, as defined by ETSI EN 300 743 7.2.5.1, into a canvas.
*/
private static void paintPixelDataSubBlock(byte[] pixelData, int[] clutEntries, int regionDepth,
int horizontalAddress, int verticalAddress, Paint paint, Canvas canvas) {
ParsableBitArray data = new ParsableBitArray(pixelData);
int column = horizontalAddress;
int line = verticalAddress;
byte[] clutMapTable2To4 = null;
byte[] clutMapTable2To8 = null;
byte[] clutMapTable4To8 = null;
while (data.bitsLeft() != 0) {
int dataType = data.readBits(8);
switch (dataType) {
case DATA_TYPE_2BP_CODE_STRING:
byte[] clutMapTable2ToX;
if (regionDepth == REGION_DEPTH_8_BIT) {
clutMapTable2ToX = clutMapTable2To8 == null ? defaultMap2To8 : clutMapTable2To8;
} else if (regionDepth == REGION_DEPTH_4_BIT) {
clutMapTable2ToX = clutMapTable2To4 == null ? defaultMap2To4 : clutMapTable2To4;
} else {
clutMapTable2ToX = null;
}
column = paint2BitPixelCodeString(data, clutEntries, clutMapTable2ToX, column, line,
paint, canvas);
data.byteAlign();
break;
case DATA_TYPE_4BP_CODE_STRING:
byte[] clutMapTable4ToX;
if (regionDepth == REGION_DEPTH_8_BIT) {
clutMapTable4ToX = clutMapTable4To8 == null ? defaultMap4To8 : clutMapTable4To8;
} else {
clutMapTable4ToX = null;
}
column = paint4BitPixelCodeString(data, clutEntries, clutMapTable4ToX, column, line,
paint, canvas);
data.byteAlign();
break;
case DATA_TYPE_8BP_CODE_STRING:
column = paint8BitPixelCodeString(data, clutEntries, null, column, line, paint, canvas);
break;
case DATA_TYPE_24_TABLE_DATA:
clutMapTable2To4 = buildClutMapTable(4, 4, data);
break;
case DATA_TYPE_28_TABLE_DATA:
clutMapTable2To8 = buildClutMapTable(4, 8, data);
break;
case DATA_TYPE_48_TABLE_DATA:
clutMapTable2To8 = buildClutMapTable(16, 8, data);
break;
case DATA_TYPE_END_LINE:
column = horizontalAddress;
line += 2;
break;
default:
// Do nothing.
break;
}
}
}
Example 13
| Source File: DvbParser.java From Telegram-FOSS with GNU General Public License v2.0 | 4 votes |
|
/**
* Draws a pixel data sub-block, as defined by ETSI EN 300 743 7.2.5.1, into a canvas.
*/
private static void paintPixelDataSubBlock(byte[] pixelData, int[] clutEntries, int regionDepth,
int horizontalAddress, int verticalAddress, Paint paint, Canvas canvas) {
ParsableBitArray data = new ParsableBitArray(pixelData);
int column = horizontalAddress;
int line = verticalAddress;
byte[] clutMapTable2To4 = null;
byte[] clutMapTable2To8 = null;
byte[] clutMapTable4To8 = null;
while (data.bitsLeft() != 0) {
int dataType = data.readBits(8);
switch (dataType) {
case DATA_TYPE_2BP_CODE_STRING:
byte[] clutMapTable2ToX;
if (regionDepth == REGION_DEPTH_8_BIT) {
clutMapTable2ToX = clutMapTable2To8 == null ? defaultMap2To8 : clutMapTable2To8;
} else if (regionDepth == REGION_DEPTH_4_BIT) {
clutMapTable2ToX = clutMapTable2To4 == null ? defaultMap2To4 : clutMapTable2To4;
} else {
clutMapTable2ToX = null;
}
column = paint2BitPixelCodeString(data, clutEntries, clutMapTable2ToX, column, line,
paint, canvas);
data.byteAlign();
break;
case DATA_TYPE_4BP_CODE_STRING:
byte[] clutMapTable4ToX;
if (regionDepth == REGION_DEPTH_8_BIT) {
clutMapTable4ToX = clutMapTable4To8 == null ? defaultMap4To8 : clutMapTable4To8;
} else {
clutMapTable4ToX = null;
}
column = paint4BitPixelCodeString(data, clutEntries, clutMapTable4ToX, column, line,
paint, canvas);
data.byteAlign();
break;
case DATA_TYPE_8BP_CODE_STRING:
column = paint8BitPixelCodeString(data, clutEntries, null, column, line, paint, canvas);
break;
case DATA_TYPE_24_TABLE_DATA:
clutMapTable2To4 = buildClutMapTable(4, 4, data);
break;
case DATA_TYPE_28_TABLE_DATA:
clutMapTable2To8 = buildClutMapTable(4, 8, data);
break;
case DATA_TYPE_48_TABLE_DATA:
clutMapTable2To8 = buildClutMapTable(16, 8, data);
break;
case DATA_TYPE_END_LINE:
column = horizontalAddress;
line += 2;
break;
default:
// Do nothing.
break;
}
}
}
Example 14
| Source File: DvbParser.java From TelePlus-Android with GNU General Public License v2.0 | 4 votes |
|
/**
* Draws a pixel data sub-block, as defined by ETSI EN 300 743 7.2.5.1, into a canvas.
*/
private static void paintPixelDataSubBlock(byte[] pixelData, int[] clutEntries, int regionDepth,
int horizontalAddress, int verticalAddress, Paint paint, Canvas canvas) {
ParsableBitArray data = new ParsableBitArray(pixelData);
int column = horizontalAddress;
int line = verticalAddress;
byte[] clutMapTable2To4 = null;
byte[] clutMapTable2To8 = null;
byte[] clutMapTable4To8 = null;
while (data.bitsLeft() != 0) {
int dataType = data.readBits(8);
switch (dataType) {
case DATA_TYPE_2BP_CODE_STRING:
byte[] clutMapTable2ToX;
if (regionDepth == REGION_DEPTH_8_BIT) {
clutMapTable2ToX = clutMapTable2To8 == null ? defaultMap2To8 : clutMapTable2To8;
} else if (regionDepth == REGION_DEPTH_4_BIT) {
clutMapTable2ToX = clutMapTable2To4 == null ? defaultMap2To4 : clutMapTable2To4;
} else {
clutMapTable2ToX = null;
}
column = paint2BitPixelCodeString(data, clutEntries, clutMapTable2ToX, column, line,
paint, canvas);
data.byteAlign();
break;
case DATA_TYPE_4BP_CODE_STRING:
byte[] clutMapTable4ToX;
if (regionDepth == REGION_DEPTH_8_BIT) {
clutMapTable4ToX = clutMapTable4To8 == null ? defaultMap4To8 : clutMapTable4To8;
} else {
clutMapTable4ToX = null;
}
column = paint4BitPixelCodeString(data, clutEntries, clutMapTable4ToX, column, line,
paint, canvas);
data.byteAlign();
break;
case DATA_TYPE_8BP_CODE_STRING:
column = paint8BitPixelCodeString(data, clutEntries, null, column, line, paint, canvas);
break;
case DATA_TYPE_24_TABLE_DATA:
clutMapTable2To4 = buildClutMapTable(4, 4, data);
break;
case DATA_TYPE_28_TABLE_DATA:
clutMapTable2To8 = buildClutMapTable(4, 8, data);
break;
case DATA_TYPE_48_TABLE_DATA:
clutMapTable2To8 = buildClutMapTable(16, 8, data);
break;
case DATA_TYPE_END_LINE:
column = horizontalAddress;
line += 2;
break;
default:
// Do nothing.
break;
}
}
}
Example 15
| Source File: DvbParser.java From TelePlus-Android with GNU General Public License v2.0 | 4 votes |
|
/**
* Draws a pixel data sub-block, as defined by ETSI EN 300 743 7.2.5.1, into a canvas.
*/
private static void paintPixelDataSubBlock(byte[] pixelData, int[] clutEntries, int regionDepth,
int horizontalAddress, int verticalAddress, Paint paint, Canvas canvas) {
ParsableBitArray data = new ParsableBitArray(pixelData);
int column = horizontalAddress;
int line = verticalAddress;
byte[] clutMapTable2To4 = null;
byte[] clutMapTable2To8 = null;
byte[] clutMapTable4To8 = null;
while (data.bitsLeft() != 0) {
int dataType = data.readBits(8);
switch (dataType) {
case DATA_TYPE_2BP_CODE_STRING:
byte[] clutMapTable2ToX;
if (regionDepth == REGION_DEPTH_8_BIT) {
clutMapTable2ToX = clutMapTable2To8 == null ? defaultMap2To8 : clutMapTable2To8;
} else if (regionDepth == REGION_DEPTH_4_BIT) {
clutMapTable2ToX = clutMapTable2To4 == null ? defaultMap2To4 : clutMapTable2To4;
} else {
clutMapTable2ToX = null;
}
column = paint2BitPixelCodeString(data, clutEntries, clutMapTable2ToX, column, line,
paint, canvas);
data.byteAlign();
break;
case DATA_TYPE_4BP_CODE_STRING:
byte[] clutMapTable4ToX;
if (regionDepth == REGION_DEPTH_8_BIT) {
clutMapTable4ToX = clutMapTable4To8 == null ? defaultMap4To8 : clutMapTable4To8;
} else {
clutMapTable4ToX = null;
}
column = paint4BitPixelCodeString(data, clutEntries, clutMapTable4ToX, column, line,
paint, canvas);
data.byteAlign();
break;
case DATA_TYPE_8BP_CODE_STRING:
column = paint8BitPixelCodeString(data, clutEntries, null, column, line, paint, canvas);
break;
case DATA_TYPE_24_TABLE_DATA:
clutMapTable2To4 = buildClutMapTable(4, 4, data);
break;
case DATA_TYPE_28_TABLE_DATA:
clutMapTable2To8 = buildClutMapTable(4, 8, data);
break;
case DATA_TYPE_48_TABLE_DATA:
clutMapTable2To8 = buildClutMapTable(16, 8, data);
break;
case DATA_TYPE_END_LINE:
column = horizontalAddress;
line += 2;
break;
default:
// Do nothing.
break;
}
}
}
Example 16
| Source File: DvbParser.java From TelePlus-Android with GNU General Public License v2.0 | 4 votes |
|
/**
* Decodes a subtitling packet, returning a list of parsed {@link Cue}s.
*
* @param data The subtitling packet data to decode.
* @param limit The limit in {@code data} at which to stop decoding.
* @return The parsed {@link Cue}s.
*/
public List<Cue> decode(byte[] data, int limit) {
// Parse the input data.
ParsableBitArray dataBitArray = new ParsableBitArray(data, limit);
while (dataBitArray.bitsLeft() >= 48 // sync_byte (8) + segment header (40)
&& dataBitArray.readBits(8) == 0x0F) {
parseSubtitlingSegment(dataBitArray, subtitleService);
}
if (subtitleService.pageComposition == null) {
return Collections.emptyList();
}
// Update the canvas bitmap if necessary.
DisplayDefinition displayDefinition = subtitleService.displayDefinition != null
? subtitleService.displayDefinition : defaultDisplayDefinition;
if (bitmap == null || displayDefinition.width + 1 != bitmap.getWidth()
|| displayDefinition.height + 1 != bitmap.getHeight()) {
bitmap = Bitmap.createBitmap(displayDefinition.width + 1, displayDefinition.height + 1,
Bitmap.Config.ARGB_8888);
canvas.setBitmap(bitmap);
}
// Build the cues.
List<Cue> cues = new ArrayList<>();
SparseArray<PageRegion> pageRegions = subtitleService.pageComposition.regions;
for (int i = 0; i < pageRegions.size(); i++) {
PageRegion pageRegion = pageRegions.valueAt(i);
int regionId = pageRegions.keyAt(i);
RegionComposition regionComposition = subtitleService.regions.get(regionId);
// Clip drawing to the current region and display definition window.
int baseHorizontalAddress = pageRegion.horizontalAddress
+ displayDefinition.horizontalPositionMinimum;
int baseVerticalAddress = pageRegion.verticalAddress
+ displayDefinition.verticalPositionMinimum;
int clipRight = Math.min(baseHorizontalAddress + regionComposition.width,
displayDefinition.horizontalPositionMaximum);
int clipBottom = Math.min(baseVerticalAddress + regionComposition.height,
displayDefinition.verticalPositionMaximum);
canvas.clipRect(baseHorizontalAddress, baseVerticalAddress, clipRight, clipBottom,
Region.Op.REPLACE);
ClutDefinition clutDefinition = subtitleService.cluts.get(regionComposition.clutId);
if (clutDefinition == null) {
clutDefinition = subtitleService.ancillaryCluts.get(regionComposition.clutId);
if (clutDefinition == null) {
clutDefinition = defaultClutDefinition;
}
}
SparseArray<RegionObject> regionObjects = regionComposition.regionObjects;
for (int j = 0; j < regionObjects.size(); j++) {
int objectId = regionObjects.keyAt(j);
RegionObject regionObject = regionObjects.valueAt(j);
ObjectData objectData = subtitleService.objects.get(objectId);
if (objectData == null) {
objectData = subtitleService.ancillaryObjects.get(objectId);
}
if (objectData != null) {
Paint paint = objectData.nonModifyingColorFlag ? null : defaultPaint;
paintPixelDataSubBlocks(objectData, clutDefinition, regionComposition.depth,
baseHorizontalAddress + regionObject.horizontalPosition,
baseVerticalAddress + regionObject.verticalPosition, paint, canvas);
}
}
if (regionComposition.fillFlag) {
int color;
if (regionComposition.depth == REGION_DEPTH_8_BIT) {
color = clutDefinition.clutEntries8Bit[regionComposition.pixelCode8Bit];
} else if (regionComposition.depth == REGION_DEPTH_4_BIT) {
color = clutDefinition.clutEntries4Bit[regionComposition.pixelCode4Bit];
} else {
color = clutDefinition.clutEntries2Bit[regionComposition.pixelCode2Bit];
}
fillRegionPaint.setColor(color);
canvas.drawRect(baseHorizontalAddress, baseVerticalAddress,
baseHorizontalAddress + regionComposition.width,
baseVerticalAddress + regionComposition.height,
fillRegionPaint);
}
Bitmap cueBitmap = Bitmap.createBitmap(bitmap, baseHorizontalAddress, baseVerticalAddress,
regionComposition.width, regionComposition.height);
cues.add(new Cue(cueBitmap, (float) baseHorizontalAddress / displayDefinition.width,
Cue.ANCHOR_TYPE_START, (float) baseVerticalAddress / displayDefinition.height,
Cue.ANCHOR_TYPE_START, (float) regionComposition.width / displayDefinition.width,
(float) regionComposition.height / displayDefinition.height));
canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR);
}
return cues;
}
Example 17
| Source File: DvbParser.java From MediaSDK with Apache License 2.0 | 4 votes |
|
/** Draws a pixel data sub-block, as defined by ETSI EN 300 743 7.2.5.1, into a canvas. */
private static void paintPixelDataSubBlock(
byte[] pixelData,
int[] clutEntries,
int regionDepth,
int horizontalAddress,
int verticalAddress,
@Nullable Paint paint,
Canvas canvas) {
ParsableBitArray data = new ParsableBitArray(pixelData);
int column = horizontalAddress;
int line = verticalAddress;
@Nullable byte[] clutMapTable2To4 = null;
@Nullable byte[] clutMapTable2To8 = null;
@Nullable byte[] clutMapTable4To8 = null;
while (data.bitsLeft() != 0) {
int dataType = data.readBits(8);
switch (dataType) {
case DATA_TYPE_2BP_CODE_STRING:
@Nullable byte[] clutMapTable2ToX;
if (regionDepth == REGION_DEPTH_8_BIT) {
clutMapTable2ToX = clutMapTable2To8 == null ? defaultMap2To8 : clutMapTable2To8;
} else if (regionDepth == REGION_DEPTH_4_BIT) {
clutMapTable2ToX = clutMapTable2To4 == null ? defaultMap2To4 : clutMapTable2To4;
} else {
clutMapTable2ToX = null;
}
column = paint2BitPixelCodeString(data, clutEntries, clutMapTable2ToX, column, line,
paint, canvas);
data.byteAlign();
break;
case DATA_TYPE_4BP_CODE_STRING:
@Nullable byte[] clutMapTable4ToX;
if (regionDepth == REGION_DEPTH_8_BIT) {
clutMapTable4ToX = clutMapTable4To8 == null ? defaultMap4To8 : clutMapTable4To8;
} else {
clutMapTable4ToX = null;
}
column = paint4BitPixelCodeString(data, clutEntries, clutMapTable4ToX, column, line,
paint, canvas);
data.byteAlign();
break;
case DATA_TYPE_8BP_CODE_STRING:
column =
paint8BitPixelCodeString(
data, clutEntries, /* clutMapTable= */ null, column, line, paint, canvas);
break;
case DATA_TYPE_24_TABLE_DATA:
clutMapTable2To4 = buildClutMapTable(4, 4, data);
break;
case DATA_TYPE_28_TABLE_DATA:
clutMapTable2To8 = buildClutMapTable(4, 8, data);
break;
case DATA_TYPE_48_TABLE_DATA:
clutMapTable4To8 = buildClutMapTable(16, 8, data);
break;
case DATA_TYPE_END_LINE:
column = horizontalAddress;
line += 2;
break;
default:
// Do nothing.
break;
}
}
}
