39 unsigned int chunk_id = 0, chunk_arg = 0;
40 unsigned long chunk_size = 0;
41 int i, j, k, nv1, nv2, vqflg = 0, vqflg_pos = -1;
42 int vqid, xpos, ypos, xp, yp, x, y, mx, my;
43 int frame_stats[2][4] = {{0},{0}};
48 chunk_id = bytestream2_get_le16(&ri->
gb);
49 chunk_size = bytestream2_get_le32(&ri->
gb);
50 chunk_arg = bytestream2_get_le16(&ri->
gb);
55 if((nv1 = chunk_arg >> 8) == 0)
57 if((nv2 = chunk_arg & 0xff) == 0 && nv1 * 6 < chunk_size)
59 for(i = 0; i < nv1; i++) {
60 ri->
cb2x2[i].
y[0] = bytestream2_get_byte(&ri->
gb);
61 ri->
cb2x2[i].
y[1] = bytestream2_get_byte(&ri->
gb);
62 ri->
cb2x2[i].
y[2] = bytestream2_get_byte(&ri->
gb);
63 ri->
cb2x2[i].
y[3] = bytestream2_get_byte(&ri->
gb);
64 ri->
cb2x2[i].
u = bytestream2_get_byte(&ri->
gb);
65 ri->
cb2x2[i].
v = bytestream2_get_byte(&ri->
gb);
67 for(i = 0; i < nv2; i++)
68 for(j = 0; j < 4; j++)
69 ri->
cb4x4[i].
idx[j] = bytestream2_get_byte(&ri->
gb);
76 for (yp = ypos; yp < ypos + 16; yp += 8)
77 for (xp = xpos; xp < xpos + 16; xp += 8) {
79 vqflg = bytestream2_get_le16(&ri->
gb);
82 vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
83 frame_stats[0][vqid]++;
90 int byte = bytestream2_get_byte(&ri->
gb);
91 mx = 8 - (byte >> 4) - ((
signed char) (chunk_arg >> 8));
92 my = 8 - (byte & 0xf) - ((
signed char) chunk_arg);
97 qcell = ri->
cb4x4 + bytestream2_get_byte(&ri->
gb);
104 for (k = 0; k < 4; k++) {
110 vqflg = bytestream2_get_le16(&ri->
gb);
113 vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
114 frame_stats[1][vqid]++;
120 int byte = bytestream2_get_byte(&ri->
gb);
121 mx = 8 - (byte >> 4) - ((
signed char) (chunk_arg >> 8));
122 my = 8 - (byte & 0xf) - ((
signed char) chunk_arg);
127 qcell = ri->
cb4x4 + bytestream2_get_byte(&ri->
gb);
148 if (xpos >= ri->
width) {
166 "Dimensions must be a multiple of 16\n");
187 void *
data,
int *got_frame,
191 int buf_size = avpkt->
size;
This structure describes decoded (raw) audio or video data.
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
void ff_apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell)
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)
four components are given, that's all.
void av_picture_copy(AVPicture *dst, const AVPicture *src, enum AVPixelFormat pix_fmt, int width, int height)
Copy image src to dst.
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
#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 CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
static void copy(LZOContext *c, int cnt)
Copies bytes from input to output buffer with checking.
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)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static void roqvideo_decode_frame(RoqContext *ri)
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. ...
static int roq_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
void av_log(void *avcl, int level, const char *fmt,...)
const char * name
Name of the codec implementation.
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
Identical in function to av_frame_make_writable(), except it uses ff_get_buffer() to allocate the buf...
int width
picture width / height.
#define AVERROR_PATCHWELCOME
Not yet implemented in Libav, patches welcome.
static av_always_inline int bytestream2_tell(GetByteContext *g)
Libavcodec external API header.
main external API structure.
static void close(AVCodecParserContext *s)
static av_cold int roq_decode_init(AVCodecContext *avctx)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
common internal api header.
static av_cold int init(AVCodecParserContext *s)
void ff_apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell)
#define FFSWAP(type, a, b)
This structure stores compressed data.