28 #define UNCHECKED_BITSTREAM_READER 1 37 #define BIT_PLANAR 0x00 39 #define BYTE_PLANAR 0x40 41 #define BYTE_LINE 0xC0 72 unsigned r = ((rgb >> 8) & 0xF) * 0x11;
73 unsigned g = ((rgb >> 4) & 0xF) * 0x11;
74 unsigned b = (rgb & 0xF) * 0x11;
75 AV_WN32(&new_palette[i], (0xFFU << 24) | (r << 16) | (g << 8) | b);
86 for (plane = 0; plane < c->
bpp; plane++) {
89 out[linesize * y + x] |=
get_bits1(&gb) << plane;
103 for (plane = 0; plane < c->
bpp; plane++) {
105 out[linesize * y + x] |=
get_bits1(&gb) << plane;
141 uint32_t *new_palette = (uint32_t *)frame->
data[1];
156 uint32_t new_palette[16],
r,
g,
b;
161 out = frame->
data[0];
166 for (y = 0; y < avctx->
height; y++) {
167 r = new_palette[0] & 0xFF0000;
168 g = new_palette[0] & 0xFF00;
169 b = new_palette[0] & 0xFF;
170 for (x = 0; x < avctx->
width; x++) {
176 r = new_palette[
index] & 0xFF0000;
177 g = new_palette[
index] & 0xFF00;
178 b = new_palette[
index] & 0xFF;
184 r = index * 0x11 << 16;
187 g = index * 0x11 << 8;
190 AV_WL24(out + x * 3, r | g | b);
199 uint32_t new_palette[64],
r,
g,
b;
204 out = frame->
data[0];
209 for (y = 0; y < avctx->
height; y++) {
210 r = new_palette[0] & 0xFF0000;
211 g = new_palette[0] & 0xFF00;
212 b = new_palette[0] & 0xFF;
213 for (x = 0; x < avctx->
width; x++) {
219 r = new_palette[
index] & 0xFF0000;
220 g = new_palette[
index] & 0xFF00;
221 b = new_palette[
index] & 0xFF;
224 b = (index << 2) | (b & 3);
227 r = (index << 18) | (r & (3 << 16));
230 g = (index << 10) | (g & (3 << 8));
233 AV_WL24(out + x * 3, r | g | b);
244 int ret,
w,
h, encoding, aligned_width, buf_size = pkt->
size;
249 encoding = buf[1] & 7;
250 c->
format = buf[1] & 0xE0;
274 aligned_width = avctx->
width;
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
packed RGB 8:8:8, 24bpp, RGBRGB...
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)
#define avpriv_request_sample(...)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Same behaviour av_fast_malloc but the buffer has additional AV_INPUT_BUFFER_PADDING_SIZE at the end w...
static void cdxl_decode_ham8(CDXLVideoContext *c, AVFrame *frame)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
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...
8 bits with AV_PIX_FMT_RGB32 palette
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
static av_cold int cdxl_decode_end(AVCodecContext *avctx)
static void chunky2chunky(CDXLVideoContext *c, int linesize, uint8_t *out)
bitstream reader API header.
static int cdxl_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *pkt)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static av_always_inline unsigned int bytestream2_get_buffer(GetByteContext *g, uint8_t *dst, unsigned int size)
const char * name
Name of the codec implementation.
static void bitline2chunky(CDXLVideoContext *c, int linesize, uint8_t *out)
enum AVPictureType pict_type
Picture type of the frame.
int width
picture width / height.
static av_cold int cdxl_decode_init(AVCodecContext *avctx)
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
packed RGB 8:8:8, 24bpp, BGRBGR...
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
static unsigned int get_bits1(GetBitContext *s)
static void skip_bits(GetBitContext *s, int n)
static void bitplanar2chunky(CDXLVideoContext *c, int linesize, uint8_t *out)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static void cdxl_decode_rgb(CDXLVideoContext *c, AVFrame *frame)
static int op(uint8_t **dst, const uint8_t *dst_end, GetByteContext *gb, int pixel, int count, int *x, int width, int linesize)
Perform decode operation.
common internal api header.
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
static void cdxl_decode_ham6(CDXLVideoContext *c, AVFrame *frame)
int key_frame
1 -> keyframe, 0-> not
static void import_format(CDXLVideoContext *c, int linesize, uint8_t *out)
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 void import_palette(CDXLVideoContext *c, uint32_t *new_palette)
static void cdxl_decode_raw(CDXLVideoContext *c, AVFrame *frame)