56 static const uint8_t bits_per_samples[4] = { 0, 16, 20, 24 };
64 0, 1, 0, 2, 3, 3, 4, 4, 5, 6, 7, 8, 0, 0, 0, 0
66 uint8_t channel_layout = header[2] >> 4;
69 ff_dlog(avctx,
"pcm_bluray_parse_header: header = %02x%02x%02x%02x\n",
70 header[0], header[1], header[2], header[3]);
84 switch (header[2] & 0x0f) {
108 avctx->
channels = channels[channel_layout];
120 "pcm_bluray_parse_header: %d channels, %d bits per sample, %d Hz, %"PRId64
" bit/s\n",
127 int *got_frame_ptr,
AVPacket *avpkt)
131 int buf_size = avpkt->
size;
133 int num_source_channels,
channel, retval;
152 sample_size = (num_source_channels *
154 samples = buf_size / sample_size;
160 dst16 = (int16_t *)frame->
data[0];
169 samples *= num_source_channels;
175 *dst16++ = bytestream2_get_be16u(&gb);
180 *dst32++ = bytestream2_get_be24u(&gb) << 8;
197 *dst16++ = bytestream2_get_be16u(&gb);
206 *dst32++ = bytestream2_get_be24u(&gb) << 8;
216 dst16[0] = bytestream2_get_be16u(&gb);
217 dst16[1] = bytestream2_get_be16u(&gb);
218 dst16[2] = bytestream2_get_be16u(&gb);
219 dst16[4] = bytestream2_get_be16u(&gb);
220 dst16[5] = bytestream2_get_be16u(&gb);
221 dst16[3] = bytestream2_get_be16u(&gb);
226 dst32[0] = bytestream2_get_be24u(&gb) << 8;
227 dst32[1] = bytestream2_get_be24u(&gb) << 8;
228 dst32[2] = bytestream2_get_be24u(&gb) << 8;
229 dst32[4] = bytestream2_get_be24u(&gb) << 8;
230 dst32[5] = bytestream2_get_be24u(&gb) << 8;
231 dst32[3] = bytestream2_get_be24u(&gb) << 8;
240 dst16[0] = bytestream2_get_be16u(&gb);
241 dst16[1] = bytestream2_get_be16u(&gb);
242 dst16[2] = bytestream2_get_be16u(&gb);
243 dst16[5] = bytestream2_get_be16u(&gb);
244 dst16[3] = bytestream2_get_be16u(&gb);
245 dst16[4] = bytestream2_get_be16u(&gb);
246 dst16[6] = bytestream2_get_be16u(&gb);
252 dst32[0] = bytestream2_get_be24u(&gb) << 8;
253 dst32[1] = bytestream2_get_be24u(&gb) << 8;
254 dst32[2] = bytestream2_get_be24u(&gb) << 8;
255 dst32[5] = bytestream2_get_be24u(&gb) << 8;
256 dst32[3] = bytestream2_get_be24u(&gb) << 8;
257 dst32[4] = bytestream2_get_be24u(&gb) << 8;
258 dst32[6] = bytestream2_get_be24u(&gb) << 8;
268 dst16[0] = bytestream2_get_be16u(&gb);
269 dst16[1] = bytestream2_get_be16u(&gb);
270 dst16[2] = bytestream2_get_be16u(&gb);
271 dst16[6] = bytestream2_get_be16u(&gb);
272 dst16[4] = bytestream2_get_be16u(&gb);
273 dst16[5] = bytestream2_get_be16u(&gb);
274 dst16[7] = bytestream2_get_be16u(&gb);
275 dst16[3] = bytestream2_get_be16u(&gb);
280 dst32[0] = bytestream2_get_be24u(&gb) << 8;
281 dst32[1] = bytestream2_get_be24u(&gb) << 8;
282 dst32[2] = bytestream2_get_be24u(&gb) << 8;
283 dst32[6] = bytestream2_get_be24u(&gb) << 8;
284 dst32[4] = bytestream2_get_be24u(&gb) << 8;
285 dst32[5] = bytestream2_get_be24u(&gb) << 8;
286 dst32[7] = bytestream2_get_be24u(&gb) << 8;
287 dst32[3] = bytestream2_get_be24u(&gb) << 8;
299 ff_dlog(avctx,
"pcm_bluray_decode_frame: decoded %d -> %d bytes\n",
305 .
name =
"pcm_bluray",
#define AV_CH_LAYOUT_7POINT1
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
AVCodec ff_pcm_bluray_decoder
ptrdiff_t const GLvoid * data
int64_t bit_rate
the average bitrate
#define AV_CH_LAYOUT_SURROUND
#define FF_DEBUG_BITSTREAM
static int pcm_bluray_parse_header(AVCodecContext *avctx, const uint8_t *header)
Parse the header of a LPCM frame read from a Blu-ray MPEG-TS stream.
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
#define AV_CH_LAYOUT_4POINT0
#define AV_CH_LAYOUT_7POINT0
#define AV_CODEC_CAP_CHANNEL_CONF
Codec should fill in channel configuration and samplerate instead of container.
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
#define AV_CH_LAYOUT_STEREO
#define AV_CH_LAYOUT_5POINT0
enum AVSampleFormat sample_fmt
audio sample format
#define FF_DEBUG_PICT_INFO
static const uint8_t header[24]
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
#define AV_CH_LAYOUT_5POINT1
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static av_always_inline unsigned int bytestream2_get_buffer(GetByteContext *g, uint8_t *dst, unsigned int size)
const char * name
Name of the codec implementation.
uint64_t channel_layout
Audio channel layout.
audio channel layout utility functions
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
static av_always_inline int bytestream2_tell(GetByteContext *g)
Libavcodec external API header.
AVSampleFormat
Audio sample formats.
int sample_rate
samples per second
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
static const uint16_t channel_layouts[7]
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
common internal api header.
channel
Use these values when setting the channel map with ebur128_set_channel().
static int pcm_bluray_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
int channels
number of audio channels
Filter the word “frame” indicates either a video frame or a group of audio samples
#define AV_CH_LAYOUT_MONO
This structure stores compressed data.
int nb_samples
number of audio samples (per channel) described by this frame
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.