39 #define MM_PREAMBLE_SIZE 6
41 #define MM_TYPE_INTER 0x5
42 #define MM_TYPE_INTRA 0x8
43 #define MM_TYPE_INTRA_HH 0xc
44 #define MM_TYPE_INTER_HH 0xd
45 #define MM_TYPE_INTRA_HHV 0xe
46 #define MM_TYPE_INTER_HHV 0xf
47 #define MM_TYPE_PALETTE 0x31
83 for (i = 0; i < 128; i++) {
84 s->
palette[i] = 0xFF
U << 24 | bytestream2_get_be24(&s->
gb);
98 int run_length,
color;
103 color = bytestream2_get_byte(&s->
gb);
107 run_length = (color & 0x7f) + 2;
108 color = bytestream2_get_byte(&s->
gb);
119 if (half_vert &&
y + half_vert < s->avctx->height)
139 int data_off = bytestream2_get_le16(&s->
gb);
149 int length = bytestream2_get_byte(&s->
gb);
150 int x = bytestream2_get_byte(&s->
gb) + ((length & 0x80) << 1);
162 int replace_array = bytestream2_get_byte(&s->
gb);
164 int replace = (replace_array >> (7-j)) & 1;
168 int color = bytestream2_get_byte(&data_ptr);
189 void *
data,
int *got_frame,
193 int buf_size = avpkt->
size;
unsigned int palette[AVPALETTE_COUNT]
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
static int mm_decode_intra(MmContext *s, int half_horiz, int half_vert)
ptrdiff_t const GLvoid * data
static av_cold int init(AVCodecContext *avctx)
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)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
8 bit with AV_PIX_FMT_RGB32 palette
static const uint32_t color[16+AV_CLASS_CATEGORY_NB]
static int mm_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
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.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
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 av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
static av_cold int mm_decode_end(AVCodecContext *avctx)
const char * name
Name of the codec implementation.
Libavcodec external API header.
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 MM_TYPE_INTRA_HHV
AVCodec ff_mmvideo_decoder
static int mm_decode_inter(MmContext *s, int half_horiz, int half_vert)
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
static av_cold int mm_decode_init(AVCodecContext *avctx)
const uint8_t * buffer_start
#define MM_TYPE_INTER_HHV
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.
This structure stores compressed data.
static void mm_decode_pal(MmContext *s)