85 n = (chunk_id & 0x04) ? 4 : 6;
90 for (i=0; i < 256; i++) {
91 if ((chunk_id & 0x01) && !(mask >>= 1)) {
100 if (!(chunk_id & 0x01) || (flag & mask)) {
103 if ((data + n) > eod)
106 for (k = 0; k < 4; ++k) {
108 for (kk = 0; kk < 3; ++kk)
113 u = *(int8_t *)data++;
114 v = *(int8_t *)data++;
118 g = *p++ - (u/2) - v;
121 *p++ = av_clip_uint8(r);
122 *p++ = av_clip_uint8(g);
123 *p++ = av_clip_uint8(b);
137 uint8_t *cb0, *cb1, *cb2, *cb3;
139 char *ip0, *ip1, *ip2, *ip3;
144 for (y=strip->
y1; y < strip->y2; y+=4) {
147 ip0 = ip1 = ip2 = ip3 = s->
frame->
data[0] +
163 for (x=strip->
x1; x < strip->x2; x+=4) {
164 if ((chunk_id & 0x01) && !(mask >>= 1)) {
165 if ((data + 4) > eod)
173 if (!(chunk_id & 0x01) || (flag & mask)) {
174 if (!(chunk_id & 0x02) && !(mask >>= 1)) {
175 if ((data + 4) > eod)
183 if ((chunk_id & 0x02) || (~flag & mask)) {
190 ip3[0] = ip3[1] = ip2[0] = ip2[1] = p[6];
191 ip3[2] = ip3[3] = ip2[2] = ip2[3] = p[9];
192 ip1[0] = ip1[1] = ip0[0] = ip0[1] = p[0];
193 ip1[2] = ip1[3] = ip0[2] = ip0[3] = p[3];
196 memcpy(ip3 + 0, p, 3); memcpy(ip3 + 3, p, 3);
197 memcpy(ip2 + 0, p, 3); memcpy(ip2 + 3, p, 3);
199 memcpy(ip3 + 6, p, 3); memcpy(ip3 + 9, p, 3);
200 memcpy(ip2 + 6, p, 3); memcpy(ip2 + 9, p, 3);
202 memcpy(ip1 + 0, p, 3); memcpy(ip1 + 3, p, 3);
203 memcpy(ip0 + 0, p, 3); memcpy(ip0 + 3, p, 3);
205 memcpy(ip1 + 6, p, 3); memcpy(ip1 + 9, p, 3);
206 memcpy(ip0 + 6, p, 3); memcpy(ip0 + 9, p, 3);
209 }
else if (flag & mask) {
210 if ((data + 4) > eod)
240 memcpy(ip3 + 0, cb2 + 6, 6);
241 memcpy(ip3 + 6, cb3 + 6, 6);
242 memcpy(ip2 + 0, cb2 + 0, 6);
243 memcpy(ip2 + 6, cb3 + 0, 6);
244 memcpy(ip1 + 0, cb0 + 6, 6);
245 memcpy(ip1 + 6, cb1 + 6, 6);
246 memcpy(ip0 + 0, cb0 + 0, 6);
247 memcpy(ip0 + 6, cb1 + 0, 6);
257 ip0 += 12; ip1 += 12;
258 ip2 += 12; ip3 += 12;
270 int chunk_id, chunk_size;
275 strip->
x1 >= strip->
x2 || strip->
y1 >= strip->
y2)
278 while ((data + 4) <= eod) {
280 chunk_size =
AV_RB24 (&data[1]) - 4;
285 chunk_size = ((data + chunk_size) > eod) ? (eod -
data) : chunk_size;
321 int i, result, strip_size, frame_flags, num_strips;
323 int encoded_buf_size;
328 frame_flags = s->
data[0];
334 if (!encoded_buf_size) {
338 if (encoded_buf_size != s->
size && (s->
size % encoded_buf_size) != 0) {
346 (s->
data[10] == 0xFE) &&
347 (s->
data[11] == 0x00) &&
348 (s->
data[12] == 0x00) &&
349 (s->
data[13] == 0x06) &&
350 (s->
data[14] == 0x00) &&
351 (s->
data[15] == 0x00))
365 for (i=0; i < num_strips; i++) {
366 if ((s->
data + 12) > eod)
385 strip_size = ((s->
data + strip_size) > eod) ? (eod - s->
data) : strip_size;
387 if ((i > 0) && !(frame_flags & 0x01)) {
399 s->
data += strip_size;
432 void *
data,
int *got_frame,
436 int ret = 0, buf_size = avpkt->
size;
cvid_strip strips[MAX_STRIPS]
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
cvid_codebook v4_codebook[256]
ptrdiff_t const GLvoid * data
packed RGB 8:8:8, 24bpp, RGBRGB...
static av_cold int init(AVCodecContext *avctx)
static int cinepak_decode(CinepakContext *s)
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_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
AVCodec ff_cinepak_decoder
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
static int cinepak_decode_strip(CinepakContext *s, cvid_strip *strip, const uint8_t *data, int size)
static int cinepak_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
8 bit with AV_PIX_FMT_RGB32 palette
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source 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_RB32
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
uint8_t cvid_codebook[12]
static const uint16_t mask[17]
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. ...
const char * name
Name of the codec implementation.
Libavcodec external API header.
const unsigned char * data
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.
static int cinepak_decode_vectors(CinepakContext *s, cvid_strip *strip, int chunk_id, int size, const uint8_t *data)
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
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_RB24
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
static av_cold int cinepak_decode_init(AVCodecContext *avctx)
static void cinepak_decode_codebook(cvid_codebook *codebook, int chunk_id, int size, const uint8_t *data)
int palette_has_changed
Tell user application that palette has changed from previous frame.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
common internal api header.
common internal and external API header
cvid_codebook v1_codebook[256]
int key_frame
1 -> keyframe, 0-> not
uint8_t * av_packet_get_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
This structure stores compressed data.
static av_cold int cinepak_decode_end(AVCodecContext *avctx)