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vcr1.c
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Definition: frame.h:76
Definition: libavcodec/avcodec.h:2854
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
struct VCR1Context VCR1Context
Definition: libavcodec/avcodec.h:1134
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Definition: libavcodec/utils.c:823
Definition: vcr1.c:31
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:74
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFilterBuffer structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Buffer references ownership and permissions
static int vcr1_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: vcr1.c:47
Definition: libavcodec/avcodec.h:138
Definition: avutil.h:143
static int decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: crystalhd.c:868
Definition: libavcodec/avcodec.h:1028
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