25 #include "librsvg-2.0/librsvg/rsvg.h" 42 RsvgDimensionData unscaled_dimensions, dimensions;
43 cairo_surface_t *image;
44 cairo_t *crender =
NULL;
49 handle = rsvg_handle_new_from_data(pkt->
data, pkt->
size, &error);
56 rsvg_handle_get_dimensions(handle, &dimensions);
57 rsvg_handle_get_dimensions(handle, &unscaled_dimensions);
58 dimensions.width = s->
width ? s->
width : dimensions.width;
59 dimensions.height = s->
height ? s->
height : dimensions.height;
61 double default_ar = unscaled_dimensions.width/(double)unscaled_dimensions.height;
63 dimensions.width =
lrintf(dimensions.height * default_ar);
65 dimensions.height =
lrintf(dimensions.width / default_ar);
77 image = cairo_image_surface_create_for_data(frame->
data[0], CAIRO_FORMAT_ARGB32,
80 if (cairo_surface_status(image) != CAIRO_STATUS_SUCCESS)
83 crender = cairo_create(image);
86 cairo_set_operator(crender, CAIRO_OPERATOR_CLEAR);
88 cairo_restore(crender);
90 cairo_scale(crender, dimensions.width / (
double)unscaled_dimensions.width,
91 dimensions.height / (
double)unscaled_dimensions.height);
93 rsvg_handle_render_cairo(handle, crender);
95 cairo_destroy(crender);
96 cairo_surface_destroy(image);
97 g_object_unref(handle);
104 #define OFFSET(x) offsetof(LibRSVGContext, x) 105 #define DEC (AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM) 129 .wrapper_name =
"librsvg",
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
#define LIBAVUTIL_VERSION_INT
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
const char * av_default_item_name(void *ptr)
Return the context name.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static void error(const char *err)
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_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#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.
enum AVPictureType pict_type
Picture type of the frame.
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
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
static const AVClass librsvg_decoder_class
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Describe the class of an AVClass context structure.
static const AVOption options[]
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
common internal api header.
AVCodec ff_librsvg_decoder
static int librsvg_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *pkt)
int key_frame
1 -> keyframe, 0-> not
This structure stores compressed data.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.