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34 #define WMV2_EXTRADATA_SIZE 4
58 put_bits(&pb, 5,
s->avctx->time_base.den /
s->avctx->time_base.num);
65 put_bits(&pb, 1,
w->top_left_mv_flag = 0);
71 s->slice_height =
s->mb_height /
code;
81 s->private_ctx = &
w->common;
106 s->dc_table_index = 1;
107 s->mv_table_index = 1;
108 s->per_mb_rl_table = 0;
121 if (
w->per_mb_rl_bit)
124 if (!
s->per_mb_rl_table) {
131 s->inter_intra_pred = 0;
149 if (
w->per_mb_rl_bit)
152 if (!
s->per_mb_rl_table) {
154 s->rl_chroma_table_index =
s->rl_table_index;
159 s->inter_intra_pred = 0;
161 s->esc3_level_length = 0;
162 s->esc3_run_length = 0;
171 int motion_x,
int motion_y)
174 int cbp, coded_cbp,
i;
176 uint8_t *coded_block;
183 for (
i = 0;
i < 6;
i++)
184 if (
s->block_last_index[
i] >= 0)
201 for (
i = 0;
i < 6;
i++) {
203 val = (
s->block_last_index[
i] >= 1);
204 cbp |=
val << (5 -
i);
211 coded_cbp |=
val << (5 -
i);
223 if (
s->inter_intra_pred) {
232 for (
i = 0;
i < 6;
i++)
AVPixelFormat
Pixel format.
const AVClass ff_mpv_enc_class
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
static int get_bits_diff(MpegEncContext *s)
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
void ff_msmpeg4_handle_slices(MpegEncContext *s)
int ff_wmv2_encode_picture_header(MpegEncContext *s)
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
MSMPEG4EncContext msmpeg4
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
static av_cold int wmv2_encode_init(AVCodecContext *avctx)
int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic_arg, int *got_packet)
AVCodec p
The public AVCodec.
const uint32_t(*const [WMV2_INTER_CBP_TABLE_COUNT] ff_wmv2_inter_table)[2]
int16_t * ff_h263_pred_motion(MpegEncContext *s, int block, int dir, int *px, int *py)
const FFCodec ff_wmv2_encoder
static double val(void *priv, double ch)
#define FF_CODEC_ENCODE_CB(func)
static av_always_inline int wmv2_get_cbp_table_index(MpegEncContext *s, int cbp_index)
#define AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE
This encoder can reorder user opaque values from input AVFrames and return them with corresponding ou...
#define av_assert0(cond)
assert() equivalent, that is always enabled.
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
void ff_msmpeg4_encode_motion(MpegEncContext *s, int mx, int my)
#define CODEC_LONG_NAME(str)
@ AV_PICTURE_TYPE_I
Intra.
const uint16_t ff_msmp4_mb_i_table[64][2]
av_cold int ff_mpv_encode_end(AVCodecContext *avctx)
int(* init)(AVBSFContext *ctx)
#define WMV2_EXTRADATA_SIZE
#define i(width, name, range_min, range_max)
and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some it can consider them to be part of the FIFO and delay acknowledging a status change accordingly Example code
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
const char * name
Name of the codec implementation.
@ AVCOL_RANGE_MPEG
Narrow or limited range content.
static const float pred[4]
#define AV_INPUT_BUFFER_PADDING_SIZE
main external API structure.
void ff_msmpeg4_encode_block(MpegEncContext *s, int16_t *block, int n)
void ff_msmpeg4_code012(PutBitContext *pb, int n)
const uint8_t ff_table_inter_intra[4][2]
av_cold int ff_mpv_encode_init(AVCodecContext *avctx)
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
static int encode_ext_header(WMV2EncContext *w)
The exact code depends on how similar the blocks are and how related they are to the block
av_cold void ff_wmv2_common_init(MpegEncContext *s)
void ff_wmv2_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
int ff_msmpeg4_coded_block_pred(MpegEncContext *s, int n, uint8_t **coded_block_ptr)