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24 #ifndef AVCODEC_INTERNAL_H
25 #define AVCODEC_INTERNAL_H
36 #define FF_SANE_NB_CHANNELS 512U
38 #if HAVE_SIMD_ALIGN_64
39 # define STRIDE_ALIGN 64
40 #elif HAVE_SIMD_ALIGN_32
41 # define STRIDE_ALIGN 32
42 #elif HAVE_SIMD_ALIGN_16
43 # define STRIDE_ALIGN 16
45 # define STRIDE_ALIGN 8
146 #if FF_API_OLD_CHANNEL_LAYOUT
147 int initial_channels;
148 uint64_t initial_channel_layout;
168 #define FF_MAX_EXTRADATA_SIZE ((1 << 28) - AV_INPUT_BUFFER_PADDING_SIZE)
188 if (-126 <= x && x <= 128)
208 #define FF_REGET_BUFFER_FLAG_READONLY 1
271 void **
data,
size_t *sei_size);
289 const int * array_valid_values,
int default_value);
int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)
Get an estimated video bitrate based on frame size, frame rate and coded bits per pixel.
AVPixelFormat
Pixel format.
int sample_rate
samples per second
int ff_thread_can_start_frame(AVCodecContext *avctx)
int skip_samples
Number of audio samples to skip at the start of the next decoded frame.
This structure describes decoded (raw) audio or video data.
void * frame_thread_encoder
AVFrame * in_frame
The input frame is stored here for encoders implementing the simple encode API.
unsigned int ff_toupper4(unsigned int x)
AVCPBProperties * ff_add_cpb_side_data(AVCodecContext *avctx)
Add a CPB properties side data to an encoding context.
The bitstream filter state.
int is_copy
When using frame-threaded decoding, this field is set for the first worker thread (e....
int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
Return the index into tab at which {a,b} match elements {[0],[1]} of tab.
int showed_multi_packet_warning
static av_always_inline float av_int2float(uint32_t i)
Reinterpret a 32-bit integer as a float.
static const struct twinvq_data tab
static double val(void *priv, double ch)
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Identical in function to ff_get_buffer(), except it reuses the existing buffer if available.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
static av_always_inline int64_t ff_samples_to_time_base(AVCodecContext *avctx, int64_t samples)
Rescale from sample rate to AVCodecContext.time_base.
static av_always_inline float ff_exp2fi(int x)
2^(x) for integer x
void ff_color_frame(AVFrame *frame, const int color[4])
AVPacket * buffer_pkt
buffers for using new encode/decode API through legacy API
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
This structure describes the bitrate properties of an encoded bitstream.
int changed_frames_dropped
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Select the (possibly hardware accelerated) pixel format.
Rational number (pair of numerator and denominator).
int skip_samples_multiplier
AVPacket * last_pkt_props
Properties (timestamps+side data) extracted from the last packet passed for decoding.
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
An AVChannelLayout holds information about the channel layout of audio data.
void * hwaccel_priv_data
hwaccel-specific private data
int ff_alloc_timecode_sei(const AVFrame *frame, AVRational rate, size_t prefix_len, void **data, size_t *sei_size)
Check AVFrame for S12M timecode side data and allocate and fill TC SEI message with timecode info.
struct AVBSFContext * bsf
void ff_dvdsub_parse_palette(uint32_t *palette, const char *p)
#define AV_NOPTS_VALUE
Undefined timestamp value.
uint8_t * byte_buffer
temporary buffer used for encoders to store their bitstream
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
unsigned int byte_buffer_size
struct AVFifo * pkt_props
AVPacket * in_pkt
This packet is used to hold the packet given to decoders implementing the .decode API; it is unused b...
int last_audio_frame
An audio frame with less than required samples has been submitted and padded with silence.
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
int needs_close
If this is set, then FFCodec->close (if existing) needs to be called for the parent AVCodecContext.
int ff_set_sar(AVCodecContext *avctx, AVRational sar)
Check that the provided sample aspect ratio is valid and set it on the codec context.
main external API structure.
Filter the word “frame” indicates either a video frame or a group of audio samples
int draining
checks API usage: after codec draining, flush is required to resume operation
int ff_side_data_update_matrix_encoding(AVFrame *frame, enum AVMatrixEncoding matrix_encoding)
Add or update AV_FRAME_DATA_MATRIXENCODING side data.
int intra_only_flag
This is set to AV_PKT_FLAG_KEY for encoders that encode intra-only formats (i.e.
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.
A reference to a data buffer.
AVChannelLayout initial_ch_layout
This structure stores compressed data.
#define flags(name, subs,...)
int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx)
int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec)
int ff_int_from_list_or_default(void *ctx, const char *val_name, int val, const int *array_valid_values, int default_value)
Check if a value is in the list.