65 unsigned char *dst = frame->
data[0];
75 static void cmv_motcomp(
unsigned char *dst, ptrdiff_t dst_stride,
76 const unsigned char *
src, ptrdiff_t src_stride,
78 int xoffset,
int yoffset,
85 if (i+xoffset>=0 && i+xoffset<width &&
86 j+yoffset>=0 && j+yoffset<height) {
87 dst[j*dst_stride + i] = src[(j+yoffset)*src_stride + i+xoffset];
89 dst[j*dst_stride + i] = 0;
102 for(x=0; x<s->
avctx->
width/4 && buf_end - buf > i; x++) {
104 unsigned char *dst = frame->
data[0] + (y*4)*frame->
linesize[0] + x*4;
105 if (raw+16<buf_end && *raw==0xFF) {
108 memcpy(dst + frame->
linesize[0], raw+4, 4);
109 memcpy(dst + 2 * frame->
linesize[0], raw+8, 4);
110 memcpy(dst + 3 * frame->
linesize[0], raw+12, 4);
112 }
else if(raw<buf_end) {
113 int xoffset = (*raw & 0xF) - 7;
114 int yoffset = ((*raw >> 4)) - 7;
122 int xoffset = (buf[i] & 0xF) - 7;
123 int yoffset = ((buf[i] >> 4)) - 7;
135 int pal_start, pal_count, i, ret, fps;
137 if(buf_end - buf < 16) {
163 for (i=pal_start; i<pal_start+pal_count && i<
AVPALETTE_COUNT && buf_end - buf >= 3; i++) {
171 #define EA_PREAMBLE_SIZE 8
172 #define MVIh_TAG MKTAG('M', 'V', 'I', 'h')
175 void *
data,
int *got_frame,
179 int buf_size = avpkt->
size;
181 const uint8_t *buf_end = buf + buf_size;
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
#define AV_LOG_WARNING
Something somehow does not look correct.
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)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
unsigned int palette[AVPALETTE_COUNT]
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
8 bits with AV_PIX_FMT_RGB32 palette
static int cmv_process_header(CmvContext *s, const uint8_t *buf, const uint8_t *buf_end)
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
static void cmv_motcomp(unsigned char *dst, ptrdiff_t dst_stride, const unsigned char *src, ptrdiff_t src_stride, int x, int y, int xoffset, int yoffset, int width, int height)
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.
static void cmv_decode_inter(CmvContext *s, AVFrame *frame, const uint8_t *buf, const uint8_t *buf_end)
static av_cold int cmv_decode_init(AVCodecContext *avctx)
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
enum AVPictureType pict_type
Picture type of the frame.
static int cmv_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
int width
picture width / height.
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_RB24
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Rational number (pair of numerator and denominator).
static void cmv_decode_intra(CmvContext *s, AVFrame *frame, const uint8_t *buf, const uint8_t *buf_end)
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
AVFrame * last2_frame
second-last
common internal api header.
common internal and external API header
int key_frame
1 -> keyframe, 0-> not
static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
This structure stores compressed data.
static av_cold int cmv_decode_end(AVCodecContext *avctx)
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.