Created
August 15, 2020 09:40
-
-
Save Neko3000/83354f8dde60a5430ae12a9983cd6e48 to your computer and use it in GitHub Desktop.
AVDev Chapter1
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
typedef struct AVFrame { | |
#define AV_NUM_DATA_POINTERS 8 | |
/** | |
* pointer to the picture/channel planes. | |
* This might be different from the first allocated byte | |
* | |
* Some decoders access areas outside 0,0 - width,height, please | |
* see avcodec_align_dimensions2(). Some filters and swscale can read | |
* up to 16 bytes beyond the planes, if these filters are to be used, | |
* then 16 extra bytes must be allocated. | |
*/ | |
uint8_t *data[AV_NUM_DATA_POINTERS]; | |
... | |
/** | |
* AVBuffer references backing the data for this frame. If all elements of | |
* this array are NULL, then this frame is not reference counted. This array | |
* must be filled contiguously -- if buf[i] is non-NULL then buf[j] must | |
* also be non-NULL for all j < i. | |
* | |
* There may be at most one AVBuffer per data plane, so for video this array | |
* always contains all the references. For planar audio with more than | |
* AV_NUM_DATA_POINTERS channels, there may be more buffers than can fit in | |
* this array. Then the extra AVBufferRef pointers are stored in the | |
* extended_buf array. | |
*/ | |
AVBufferRef *buf[AV_NUM_DATA_POINTERS]; | |
... | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment