59 {{1, 2, 3, 4}, {1, 2, 0, 3},
60 {1, 2, 1, 3}, {1, 2, 2, 3},
61 {1, 0, 2, 3}, {1, 0, 0, 2},
62 {1, 0, 1, 2}, {1, 1, 2, 3},
63 {0, 1, 2, 3}, {0, 1, 0, 2},
64 {1, 1, 0, 2}, {0, 1, 1, 2},
65 {0, 0, 1, 2}, {0, 0, 0, 1},
118 "Palette parameters invalid, header probably corrupt\n");
169 s->
dstptr[linesize] = bufptr[linesize];
170 s->
dstptr[linesize + 1] = bufptr[linesize + 1];
198 int tag, firstcolor, is_odd_frame;
219 is_odd_frame = avpkt->
data[0];
225 palette = (uint32_t *)frame->
data[1];
228 palette[i + firstcolor] = (s->
srcptr[0] << 18) |
231 palette[i + firstcolor] |= 0xFF
U << 24 |
232 (palette[i + firstcolor] >> 6) & 0x30303;
237 for (y = 0; y < avctx->
height; y += 2) {
238 for (x = 0; x < avctx->
width; x += 2) {
static int copy_tag(AVIOContext *in, AVIOContext *out, int32_t tag_name)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
static av_cold int init(AVCodecContext *avctx)
static uint8_t yop_get_next_nibble(YopDecContext *s)
Return the next nibble in sequence, consuming a new byte on the input only if necessary.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
8 bits with AV_PIX_FMT_RGB32 palette
static int yop_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
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. ...
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Identical in function to ff_get_buffer(), except it reuses the existing buffer if available...
static const int8_t motion_vector[16][2]
Lookup table for copying macroblocks.
const char * name
Name of the codec implementation.
common internal API header
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
int width
picture width / height.
static const uint8_t paint_lut[15][4]
Lookup table for painting macroblocks.
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
static av_cold int yop_decode_close(AVCodecContext *avctx)
static int yop_paint_block(YopDecContext *s, int linesize, int tag)
Paint a macroblock using the pattern in paint_lut.
int palette_has_changed
Tell user application that palette has changed from previous frame.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int yop_copy_previous_block(YopDecContext *s, int linesize, int copy_tag)
Copy a previously painted macroblock to the current_block.
common internal api header.
static av_cold int yop_decode_init(AVCodecContext *avctx)
#define xf(width, name, var, range_min, range_max, subs,...)
int frame_number
Frame counter, set by libavcodec.
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
This structure stores compressed data.