49 for (i = 0; i < 3; ++
i)
57 for (i = 0; i < 3; ++
i) {
94 unsigned char *dst,
int dst_size)
97 unsigned char huff_code_table[15];
98 unsigned char *dst_cur = dst;
99 unsigned char *dst_end = dst + dst_size;
100 const unsigned char *src_end = src + src_size;
102 memcpy(huff_code_table, src, 15);
105 while (src < src_end) {
107 if ((huff_code >> 4) == 15) {
110 *dst_cur++ = b | (huff_code >> 4);
112 *dst_cur++ = huff_code_table[huff_code >> 4];
113 if (dst_cur >= dst_end)
117 if (huff_code == 15) {
120 *dst_cur++ = huff_code_table[huff_code];
121 if (dst_cur >= dst_end)
125 return dst_cur - dst;
129 unsigned char *dst,
int dst_size)
133 unsigned char *dst_end = dst + dst_size, *dst_start = dst;
134 const unsigned char *src_end = src + src_size;
136 while (src < src_end && dst < dst_end) {
138 for (i = 0; i < 8 && src < src_end && dst < dst_end; ++
i) {
139 if (code & (1 << i)) {
145 if ((
int)(dst - dst_start) < offset + 1)
147 sz = (cmd & 0xF) + 2;
151 sz =
FFMIN(sz, dst_end - dst);
153 *dst = *(dst - offset - 1);
160 if (dst_end - dst > dst_size - dst_size/10)
167 unsigned char *dst,
int dst_size)
170 unsigned char *dst_end = dst + dst_size;
171 const unsigned char *src_end = src + src_size;
173 while (src + 1 < src_end && dst < dst_end) {
177 memset(dst, *src++,
FFMIN(len, dst_end - dst));
180 if (len > src_end-src) {
184 memcpy(dst, src,
FFMIN3(len, dst_end - dst, src_end - src));
190 if (dst_end - dst > dst_size - dst_size/10)
197 void *
data,
int *got_frame,
201 int buf_size = avpkt->
size;
203 int i, y, palette_type, palette_colors_count,
204 bitmap_frame_type, bitmap_frame_size, res = 0;
206 palette_type = buf[0];
207 palette_colors_count =
AV_RL16(buf + 1);
208 bitmap_frame_type = buf[3];
211 bitmap_frame_size = buf_size - 4;
214 if (bitmap_frame_size < palette_colors_count * (3 + (palette_type != 0)))
216 if (palette_type == 0) {
217 if (palette_colors_count > 256)
219 for (i = 0; i < palette_colors_count; ++
i) {
220 cin->
palette[
i] = 0xFF
U << 24 | bytestream_get_le24(&buf);
221 bitmap_frame_size -= 3;
224 for (i = 0; i < palette_colors_count; ++
i) {
227 bitmap_frame_size -= 4;
233 switch (bitmap_frame_type) {
325 .
name =
"dsicinvideo",
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
#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 void cin_apply_delta_data(const unsigned char *src, unsigned char *dst, int size)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
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)
AVCodec ff_dsicinvideo_decoder
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
8 bits with AV_PIX_FMT_RGB32 palette
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
static av_cold void destroy_buffers(CinVideoContext *cin)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static int cin_decode_huffman(const unsigned char *src, int src_size, unsigned char *dst, int dst_size)
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...
uint8_t * bitmap_table[3]
const char * name
Name of the codec implementation.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_RL24
static av_cold int cinvideo_decode_init(AVCodecContext *avctx)
static av_cold int cinvideo_decode_end(AVCodecContext *avctx)
int width
picture width / height.
static av_cold int allocate_buffers(CinVideoContext *cin)
static int cin_decode_lzss(const unsigned char *src, int src_size, unsigned char *dst, int dst_size)
int discard_damaged_percentage
The percentage of damaged samples to discard 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.
int palette_has_changed
Tell user application that palette has changed from previous frame.
and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some it can consider them to be part of the FIFO and delay acknowledging a status change accordingly Example code
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
common internal api header.
static int cin_decode_rle(const unsigned char *src, int src_size, unsigned char *dst, int dst_size)
#define FFSWAP(type, a, b)
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.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
static int cinvideo_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)