44 WebPAnimEncoderOptions enc_options = { { 0 } };
45 WebPAnimEncoderOptionsInit(&enc_options);
48 s->
enc = WebPAnimEncoderNew(avctx->
width, avctx->
height, &enc_options);
67 WebPData assembled_data = { 0 };
68 ret = WebPAnimEncoderAssemble(s->
enc, &assembled_data);
73 memcpy(pkt->
data, assembled_data.bytes, assembled_data.size);
81 "WebPAnimEncoderAssemble() failed with error: %d\n",
82 VP8_ENC_ERROR_OUT_OF_MEMORY);
88 WebPPicture *pic =
NULL;
96 ret = WebPAnimEncoderAdd(s->
enc, pic, timestamp_ms, &s->
cc.
config);
99 "Encoding WebP frame failed with error: %d\n",
111 WebPPictureFree(pic);
122 WebPAnimEncoderDelete(s->
enc);
135 .
name =
"libwebp_anim",
149 .priv_class = &
class,
151 .wrapper_name =
"libwebp",
AVCodec ff_libwebp_anim_encoder
This structure describes decoded (raw) audio or video data.
static int libwebp_anim_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
#define LIBAVUTIL_VERSION_INT
static av_cold int init(AVCodecContext *avctx)
const char * av_default_item_name(void *ptr)
Return the context name.
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
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)
static av_cold int end(AVCodecContext *avctx)
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
#define AV_LOG_VERBOSE
Detailed information.
#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.
static av_cold int libwebp_anim_encode_init(AVCodecContext *avctx)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
int av_log_get_level(void)
Get the current log level.
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.
int width
picture width / height.
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[]
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[]
static int libwebp_anim_encode_close(AVCodecContext *avctx)
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame 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.Frame references ownership and permissions
AVPixelFormat
Pixel format.
This structure stores compressed data.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...