40 WebPPicture *pic =
NULL;
42 WebPMemoryWriter mw = { 0 };
48 WebPMemoryWriterInit(&mw);
49 pic->custom_ptr = &mw;
50 pic->writer = WebPMemoryWrite;
52 ret = WebPEncode(&s->
config, pic);
63 memcpy(pkt->
data, mw.mem, mw.size);
69 #if (WEBP_ENCODER_ABI_VERSION > 0x0203) 70 WebPMemoryWriterClear(&mw);
110 .priv_class = &
class,
112 .wrapper_name =
"libwebp",
This structure describes decoded (raw) audio or video data.
#define LIBAVUTIL_VERSION_INT
static av_cold int init(AVCodecContext *avctx)
static int libwebp_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
const char * av_default_item_name(void *ptr)
Return the context name.
static int libwebp_encode_close(AVCodecContext *avctx)
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
WebP encoder using libwebp: common structs and methods.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
const char * name
Name of the codec implementation.
int ff_libwebp_get_frame(AVCodecContext *avctx, LibWebPContextCommon *s, const AVFrame *frame, AVFrame **alt_frame_ptr, WebPPicture **pic_ptr)
av_cold int ff_libwebp_encode_init_common(AVCodecContext *avctx)
int flags
A combination of AV_PKT_FLAG values.
LibWebPContextCommon LibWebPContext
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 const AVCodecDefault libwebp_defaults[]
static av_cold int libwebp_encode_init(AVCodecContext *avctx)
int ff_libwebp_error_to_averror(int err)
main external API structure.
Describe the class of an AVClass context structure.
static enum AVPixelFormat pix_fmts[]
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
const OptionDef options[]
AVPixelFormat
Pixel format.
This structure stores compressed data.
AVCodec ff_libwebp_encoder