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24 #ifndef AVCODEC_INTERNAL_H
25 #define AVCODEC_INTERNAL_H
41 #define FF_CODEC_CAP_INIT_THREADSAFE (1 << 0)
49 #define FF_CODEC_CAP_INIT_CLEANUP (1 << 1)
56 #define FF_CODEC_CAP_SETS_PKT_DTS (1 << 2)
61 #define FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM (1 << 3)
67 #define FF_CODEC_CAP_EXPORTS_CROPPING (1 << 4)
71 #define FF_CODEC_CAP_SLICE_THREAD_HAS_MF (1 << 5)
76 #define FF_CODEC_CAP_ALLOCATE_PROGRESS (1 << 6)
80 #define FF_CODEC_CAP_AUTO_THREADS (1 << 7)
85 #define FF_CODEC_CAP_SETS_FRAME_PROPS (1 << 8)
90 #define FF_CODEC_TAGS_END -1
94 # define ff_tlog(ctx, ...) av_log(ctx, AV_LOG_TRACE, __VA_ARGS__)
96 # define ff_tlog(ctx, ...) do { } while(0)
100 #define FF_DEFAULT_QUANT_BIAS 999999
102 #define FF_QSCALE_TYPE_MPEG1 0
103 #define FF_QSCALE_TYPE_MPEG2 1
104 #define FF_QSCALE_TYPE_H264 2
105 #define FF_QSCALE_TYPE_VP56 3
107 #define FF_SANE_NB_CHANNELS 512U
109 #define FF_SIGNBIT(x) ((x) >> CHAR_BIT * sizeof(x) - 1)
111 #if HAVE_SIMD_ALIGN_64
112 # define STRIDE_ALIGN 64
113 #elif HAVE_SIMD_ALIGN_32
114 # define STRIDE_ALIGN 32
115 #elif HAVE_SIMD_ALIGN_16
116 # define STRIDE_ALIGN 16
118 # define STRIDE_ALIGN 8
144 #if FF_API_OLD_ENCDEC
194 #if FF_API_OLD_ENCDEC
244 #define FF_MAX_EXTRADATA_SIZE ((1 << 28) - AV_INPUT_BUFFER_PADDING_SIZE)
292 if (-126 <= x && x <= 128)
312 #define FF_REGET_BUFFER_FLAG_READONLY 1
379 void **
data,
size_t *sei_size);
397 const int * array_valid_values,
int default_value);
401 #if defined(_WIN32) && CONFIG_SHARED && !defined(BUILDING_avcodec)
402 # define av_export_avcodec __declspec(dllimport)
404 # define av_export_avcodec
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.
unsigned int avpriv_toupper4(unsigned int x)
void * frame_thread_encoder
size_t compat_decode_consumed
const uint8_t * avpriv_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state)
size_t compat_decode_partial_size
AVCPBProperties * ff_add_cpb_side_data(AVCodecContext *avctx)
Add a CPB properties side data to an encoding context.
The bitstream filter state.
uint64_t initial_channel_layout
int is_copy
Whether the parent AVCodecContext is a copy of the context which had init() called on it.
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
AVFrame * compat_decode_frame
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 * compat_encode_packet
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.
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.
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
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 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.
const uint8_t ff_log2_run[41]
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 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.
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
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.