media-add-ons/demultiplexer/MediaOutputInfo.cpp

54 status_t MediaOutputInfo::FormatProposal(media_format * format)
58 	if (!format_is_acceptible(*format,generalFormat)) {
63 	format->SpecializeTo(&wildcardedFormat);
67 // Presumably we have already agreed with them that this format is
85 						  media_format * format,
93 	status_t status = FormatChangeRequested(where,format);
106 				 const media_format & format,
111 	output.format = format;
119 		output.format = generalFormat;
128 	output.format = generalFormat;
182 	return ComputeBufferSize(output.format);
186 uint32 MediaOutputInfo::ComputeBufferSize(const media_format & format) {
188 	switch (format.type) {
190 		bufferSize = format.u.multistream.max_chunk_size;
193 		bufferSize = format.u.encoded_video.frame_size;
196 		if (format.u.raw_video.interlace == 0) {
201 			bufferSize = format.u.raw_video.display.bytes_per_row *
202 						 format.u.raw_video.display.line_count /
203 						 format.u.raw_video.interlace;
207 		bufferSize = format.u.encoded_audio.frame_size;
210 		bufferSize = format.u.raw_audio.buffer_size;
222 	return ComputeBufferPeriod(output.format);
226 bigtime_t MediaOutputInfo::ComputeBufferPeriod(const media_format & format) {
228 	switch (format.type) {
233 		bufferPeriod = bigtime_t(1000.0 * 8.0 * ComputeBufferSize(format)
234 								 / format.u.multistream.max_bit_rate);
237 		bufferPeriod = bigtime_t(1000.0 * 8.0 * ComputeBufferSize(format)
238 								 / format.u.encoded_video.max_bit_rate);
241 		bufferPeriod = bigtime_t(1000.0 * 8.0 * ComputeBufferSize(format)
242 								 / format.u.encoded_audio.bit_rate);
249 								 / format.u.raw_video.field_rate);
258 		bufferPeriod = bigtime_t(1000000.0 * ComputeBufferSize(format)
259 								 / (format.u.raw_audio.format
261 								 / format.u.raw_audio.channel_count
262 							     / format.u.raw_audio.frame_rate);