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FFmpeg
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rpza.c File Reference
QT RPZA Video Decoder by Roberto Togni For more information about the RPZA format, visit: http://www.pcisys.net/~melanson/codecs/. More...
#include <stdio.h>#include <stdlib.h>#include <string.h>#include "libavutil/internal.h"#include "libavutil/intreadwrite.h"#include "avcodec.h"#include "internal.h"
Include dependency graph for rpza.c:
Go to the source code of this file.
Data Structures | |
| struct | RpzaContext |
Macros | |
| #define | ADVANCE_BLOCK() |
Typedefs | |
| typedef struct RpzaContext | RpzaContext |
Functions | |
| static void | rpza_decode_stream (RpzaContext *s) |
| static av_cold int | rpza_decode_init (AVCodecContext *avctx) |
| static int | rpza_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt) |
| static av_cold int | rpza_decode_end (AVCodecContext *avctx) |
Variables | |
| AVCodec | ff_rpza_decoder |
Detailed Description
QT RPZA Video Decoder by Roberto Togni For more information about the RPZA format, visit: http://www.pcisys.net/~melanson/codecs/.
The RPZA decoder outputs RGB555 colorspace data.
Note that this decoder reads big endian RGB555 pixel values from the bytestream, arranges them in the host's endian order, and outputs them to the final rendered map in the same host endian order. This is intended behavior as the libavcodec documentation states that RGB555 pixels shall be stored in native CPU endianness.
Definition in file rpza.c.
Macro Definition Documentation
| #define ADVANCE_BLOCK | ( | ) |
Value:
{ \
pixel_ptr += 4; \
{ \
pixel_ptr = 0; \
row_ptr += stride * 4; \
} \
total_blocks--; \
if (total_blocks < 0) \
{ \
av_log(s->avctx, AV_LOG_ERROR, "warning: block counter just went negative (this should not happen)\n"); \
return; \
} \
}
initialize output if(nPeaks >3)%at least 3 peaks in spectrum for trying to find f0 nf0peaks
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 This method is called when a frame is wanted on an output For an 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 it should return
Definition: filter_design.txt:216
Definition at line 56 of file rpza.c.
Referenced by rpza_decode_stream().
Typedef Documentation
| typedef struct RpzaContext RpzaContext |
Function Documentation
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Definition at line 72 of file rpza.c.
Referenced by rpza_decode_frame().
Variable Documentation
| AVCodec ff_rpza_decoder |
Initial value:
= {
.name = "rpza",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_RPZA,
.priv_data_size = sizeof(RpzaContext),
.init = rpza_decode_init,
.close = rpza_decode_end,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("QuickTime video (RPZA)"),
}
static int rpza_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: rpza.c:247
struct RpzaContext RpzaContext
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: libavcodec/avcodec.h:743
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: libavutil/internal.h:123
Definition: libavcodec/avcodec.h:145
Definition: avutil.h:143
static int decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: crystalhd.c:868
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