X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Finternal.h;h=9f7213c17decbfd37437a2135e289f501bad9e56;hb=d711d839ca6714a5ef5b53ee51bc7632e62cf203;hp=89045fcb10e03ee06189b3b7d51eec92f6398475;hpb=bf7e799c9e83f6f6718866841d3169a91ef6b07e;p=ffmpeg diff --git a/libavcodec/internal.h b/libavcodec/internal.h index 89045fcb10e..9f7213c17de 100644 --- a/libavcodec/internal.h +++ b/libavcodec/internal.h @@ -1,23 +1,23 @@ /* - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * FFmpeg is distributed in the hope that it will be useful, + * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** - * @file libavcodec/internal.h + * @file * common internal api header. */ @@ -25,41 +25,165 @@ #define AVCODEC_INTERNAL_H #include + +#include "libavutil/buffer.h" +#include "libavutil/channel_layout.h" +#include "libavutil/mathematics.h" +#include "libavutil/pixfmt.h" #include "avcodec.h" +#include "config.h" + +#define FF_SANE_NB_CHANNELS 63U + +typedef struct FramePool { + /** + * Pools for each data plane. For audio all the planes have the same size, + * so only pools[0] is used. + */ + AVBufferPool *pools[4]; + + /* + * Pool parameters + */ + int format; + int width, height; + int stride_align[AV_NUM_DATA_POINTERS]; + int linesize[4]; + int planes; + int channels; + int samples; +} FramePool; + +typedef struct AVCodecInternal { + /** + * Whether the parent AVCodecContext is a copy of the context which had + * init() called on it. + * This is used by multithreading - shared tables and picture pointers + * should be freed from the original context only. + */ + int is_copy; + + /** + * Whether to allocate progress for frame threading. + * + * The codec must set it to 1 if it uses ff_thread_await/report_progress(), + * then progress will be allocated in ff_thread_get_buffer(). The frames + * then MUST be freed with ff_thread_release_buffer(). + * + * If the codec does not need to call the progress functions (there are no + * dependencies between the frames), it should leave this at 0. Then it can + * decode straight to the user-provided frames (which the user will then + * free with av_frame_unref()), there is no need to call + * ff_thread_release_buffer(). + */ + int allocate_progress; + + /** + * An audio frame with less than required samples has been submitted and + * padded with silence. Reject all subsequent frames. + */ + int last_audio_frame; + + AVFrame *to_free; + + FramePool *pool; + + void *thread_ctx; + + /** + * Current packet as passed into the decoder, to avoid having to pass the + * packet into every function. + */ + AVPacket *pkt; +} AVCodecInternal; + +struct AVCodecDefault { + const uint8_t *key; + const uint8_t *value; +}; /** - * Logs a generic warning message about a missing feature. - * @param[in] avc a pointer to an arbitrary struct of which the first field is - * a pointer to an AVClass struct - * @param[in] feature string containing the name of the missing feature - * @param[in] want_sample indicates if samples are wanted which exhibit this feature. - * If want_sample is non-zero, additional verbage will be added to the log - * message which tells the user how to report samples to the development - * mailing list. + * Return the hardware accelerated codec for codec codec_id and + * pixel format pix_fmt. + * + * @param avctx The codec context containing the codec_id and pixel format. + * @return the hardware accelerated codec, or NULL if none was found. */ -void ff_log_missing_feature(void *avc, const char *feature, int want_sample); +AVHWAccel *ff_find_hwaccel(AVCodecContext *avctx); /** - * Logs a generic warning message asking for a sample. - * @param[in] avc a pointer to an arbitrary struct of which the first field is - * a pointer to an AVClass struct - * @param[in] msg string containing an optional message, or NULL if no message + * Return the index into tab at which {a,b} match elements {[0],[1]} of tab. + * If there is no such matching pair then size is returned. */ -void ff_log_ask_for_sample(void *avc, const char *msg); +int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b); + +unsigned int avpriv_toupper4(unsigned int x); + +int avpriv_lock_avformat(void); +int avpriv_unlock_avformat(void); /** - * Determines whether pix_fmt is a hardware accelerated format. + * Maximum size in bytes of extradata. + * This value was chosen such that every bit of the buffer is + * addressable by a 32-bit signed integer as used by get_bits. */ -int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt); +#define FF_MAX_EXTRADATA_SIZE ((1 << 28) - FF_INPUT_BUFFER_PADDING_SIZE) /** - * Returns the hardware accelerated codec for codec codec_id and - * pixel format pix_fmt. + * Check AVPacket size and/or allocate data. * - * @param codec_id the codec to match - * @param pix_fmt the pixel format to match - * @return the hardware accelerated codec, or NULL if none was found. + * Encoders supporting AVCodec.encode2() can use this as a convenience to + * ensure the output packet data is large enough, whether provided by the user + * or allocated in this function. + * + * @param avpkt the AVPacket + * If avpkt->data is already set, avpkt->size is checked + * to ensure it is large enough. + * If avpkt->data is NULL, a new buffer is allocated. + * avpkt->size is set to the specified size. + * All other AVPacket fields will be reset with av_init_packet(). + * @param size the minimum required packet size + * @return 0 on success, negative error code on failure + */ +int ff_alloc_packet(AVPacket *avpkt, int size); + +/** + * Rescale from sample rate to AVCodecContext.time_base. + */ +static av_always_inline int64_t ff_samples_to_time_base(AVCodecContext *avctx, + int64_t samples) +{ + return av_rescale_q(samples, (AVRational){ 1, avctx->sample_rate }, + avctx->time_base); +} + +/** + * Get a buffer for a frame. This is a wrapper around + * AVCodecContext.get_buffer() and should be used instead calling get_buffer() + * directly. + */ +int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags); + +/** + * Identical in function to av_frame_make_writable(), except it uses + * ff_get_buffer() to allocate the buffer when needed. + */ +int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame); + +const uint8_t *avpriv_find_start_code(const uint8_t *restrict p, + const uint8_t *end, + uint32_t *restrict state); + +/** + * Check that the provided frame dimensions are valid and set them on the codec + * context. + */ +int ff_set_dimensions(AVCodecContext *s, int width, int height); + +/** + * Add or update AV_FRAME_DATA_MATRIXENCODING side data. */ -AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt); +int ff_side_data_update_matrix_encoding(AVFrame *frame, + enum AVMatrixEncoding matrix_encoding); #endif /* AVCODEC_INTERNAL_H */