38 unsigned int chunk_id = 0, chunk_arg = 0;
39 unsigned long chunk_size = 0;
40 int i, j, k, nv1, nv2, vqflg = 0, vqflg_pos = -1;
41 int vqid, xpos, ypos, xp, yp, x, y, mx, my;
46 chunk_id = bytestream2_get_le16(gb);
47 chunk_size = bytestream2_get_le32(gb);
48 chunk_arg = bytestream2_get_le16(gb);
53 if((nv1 = chunk_arg >> 8) == 0)
55 if((nv2 = chunk_arg & 0xff) == 0 && nv1 * 6 < chunk_size)
57 for(i = 0; i < nv1; i++) {
58 ri->
cb2x2[
i].
y[0] = bytestream2_get_byte(gb);
59 ri->
cb2x2[
i].
y[1] = bytestream2_get_byte(gb);
60 ri->
cb2x2[
i].
y[2] = bytestream2_get_byte(gb);
61 ri->
cb2x2[
i].
y[3] = bytestream2_get_byte(gb);
62 ri->
cb2x2[
i].
u = bytestream2_get_byte(gb);
63 ri->
cb2x2[
i].
v = bytestream2_get_byte(gb);
65 for(i = 0; i < nv2; i++)
66 for(j = 0; j < 4; j++)
67 ri->
cb4x4[i].
idx[j] = bytestream2_get_byte(gb);
80 for (yp = ypos; yp < ypos + 16; yp += 8)
81 for (xp = xpos; xp < xpos + 16; xp += 8) {
87 vqflg = bytestream2_get_le16(gb);
90 vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
97 int byte = bytestream2_get_byte(gb);
98 mx = 8 - (byte >> 4) - ((
signed char) (chunk_arg >> 8));
99 my = 8 - (byte & 0xf) - ((
signed char) chunk_arg);
104 qcell = ri->
cb4x4 + bytestream2_get_byte(gb);
111 for (k = 0; k < 4; k++) {
121 vqflg = bytestream2_get_le16(gb);
124 vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
130 int byte = bytestream2_get_byte(gb);
131 mx = 8 - (byte >> 4) - ((
signed char) (chunk_arg >> 8));
132 my = 8 - (byte & 0xf) - ((
signed char) chunk_arg);
137 qcell = ri->
cb4x4 + bytestream2_get_byte(gb);
158 if (xpos >= ri->
width) {
194 void *
data,
int *got_frame,
198 int buf_size = avpkt->
size;
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
static void copy(const float *p1, float *p2, const int length)
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
static int chunk_start(AVFormatContext *s)
static av_cold int init(AVCodecContext *avctx)
#define avpriv_request_sample(...)
void ff_apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell)
enum AVColorRange color_range
MPEG vs JPEG YUV range.
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)
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
#define RoQ_QUAD_CODEBOOK
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
#define AV_LOG_VERBOSE
Detailed information.
void ff_apply_motion_4x4(RoqContext *ri, int x, int y, int deltax, int deltay)
void ff_apply_motion_8x8(RoqContext *ri, int x, int y, int deltax, int deltay)
static av_cold int roq_decode_end(AVCodecContext *avctx)
static av_always_inline int bytestream2_get_bytes_left(GetByteContext *g)
#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 int roq_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
simple assert() macros that are a bit more flexible than ISO C assert().
const char * name
Name of the codec implementation.
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
int width
picture width / height.
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
static av_always_inline int bytestream2_tell(GetByteContext *g)
Libavcodec external API header.
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_WB16 unsigned int_TMPL byte
main external API structure.
static av_cold int roq_decode_init(AVCodecContext *avctx)
static void roqvideo_decode_frame(RoqContext *ri, GetByteContext *gb)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
common internal api header.
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
void ff_apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell)
#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.