51 int buf_size = avpkt->
size;
57 int i, j, x, y,
stride,
ret, vect_w = 3, vect_h = 3;
70 if (buf_end - buf < 4)
78 uint32_t *pal = (uint32_t *) p->
data[1];
81 last = first +
AV_RL16(buf + 2);
82 if (first >= 256 || last > 256 || buf_end - buf < 4 + 4 + 3 * (last - first))
85 for (i=first; i<last; i++, buf+=3) {
86 pal[
i] = (buf[0] << 18) | (buf[1] << 10) | (buf[2] << 2);
87 pal[
i] |= 0xFFU << 24 | (pal[i] >> 6) & 0x30303;
121 if (buf_end - buf < 256 * vect_w * vect_h)
123 table = buf + (256 * vect_w * vect_h);
125 int map_size = ((318 / vect_w + 7) / 8) * (198 / vect_h);
126 if (buf_end - table < map_size)
132 for (y=0; y<198; y+=vect_h) {
133 for (x=0; x<318; x+=vect_w) {
135 if (buf_end - table < 1)
137 vect = &buf[*table++ * (vect_w * vect_h)];
138 for (j=0; j<vect_w; j++) {
139 out[(y + 0) * stride + x + j] = vect[(0 * vect_w) + j];
140 out[(y + 1) * stride + x + j] = vect[(1 * vect_w) + j];
142 out[(y + 2) * stride + x + j] =
143 vect[(2 * vect_w) + j];
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
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.
static av_cold int init(AVCodecContext *avctx)
static int avs_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
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
trying all byte sequences megabyte in length and selecting the best looking sequence will yield cases to try But first
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
bitstream reader API header.
static const uint16_t table[]
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...
const char * name
Name of the codec implementation.
enum AVPictureType pict_type
Picture type of the 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 unsigned int get_bits1(GetBitContext *s)
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
static av_cold int avs_decode_init(AVCodecContext *avctx)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
common internal api header.
int key_frame
1 -> keyframe, 0-> not
static const uint8_t * align_get_bits(GetBitContext *s)
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
static av_cold int avs_decode_end(AVCodecContext *avctx)
This structure stores compressed data.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators...