diff options
Diffstat (limited to 'libavfilter/buffersink.h')
-rw-r--r-- | libavfilter/buffersink.h | 82 |
1 files changed, 77 insertions, 5 deletions
diff --git a/libavfilter/buffersink.h b/libavfilter/buffersink.h index 8f94a9c94d..2ee5294b26 100644 --- a/libavfilter/buffersink.h +++ b/libavfilter/buffersink.h @@ -1,18 +1,18 @@ /* - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg 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. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -21,12 +21,84 @@ /** * @file - * memory buffer sink API + * memory buffer sink API for audio and video */ #include "avfilter.h" /** + * Struct to use for initializing a buffersink context. + */ +typedef struct { + const enum PixelFormat *pixel_fmts; ///< list of allowed pixel formats, terminated by PIX_FMT_NONE +} AVBufferSinkParams; + +/** + * Create an AVBufferSinkParams structure. + * + * Must be freed with av_free(). + */ +AVBufferSinkParams *av_buffersink_params_alloc(void); + +/** + * Struct to use for initializing an abuffersink context. + */ +typedef struct { + const enum AVSampleFormat *sample_fmts; ///< list of allowed sample formats, terminated by AV_SAMPLE_FMT_NONE + const int64_t *channel_layouts; ///< list of allowed channel layouts, terminated by -1 + const int *packing_fmts; ///< list of allowed packing formats +} AVABufferSinkParams; + +/** + * Create an AVABufferSinkParams structure. + * + * Must be freed with av_free(). + */ +AVABufferSinkParams *av_abuffersink_params_alloc(void); + +/** + * Tell av_buffersink_get_buffer_ref() to read video/samples buffer + * reference, but not remove it from the buffer. This is useful if you + * need only to read a video/samples buffer, without to fetch it. + */ +#define AV_BUFFERSINK_FLAG_PEEK 1 + +/** + * Tell av_buffersink_get_buffer_ref() not to request a frame fom its input. + * If a frame is already buffered, it is read (and removed from the buffer), + * but if no frame is present, return AVERROR(EAGAIN). + */ +#define AV_BUFFERSINK_FLAG_NO_REQUEST 2 + +/** + * Get an audio/video buffer data from buffer_sink and put it in bufref. + * + * This function works with both audio and video buffer sinks. + * + * @param buffer_sink pointer to a buffersink or abuffersink context + * @param flags a combination of AV_BUFFERSINK_FLAG_* flags + * @return >= 0 in case of success, a negative AVERROR code in case of + * failure + */ +int av_buffersink_get_buffer_ref(AVFilterContext *buffer_sink, + AVFilterBufferRef **bufref, int flags); + + +/** + * Get the number of immediately available frames. + */ +int av_buffersink_poll_frame(AVFilterContext *ctx); + +#if FF_API_OLD_VSINK_API +/** + * @deprecated Use av_buffersink_get_buffer_ref() instead. + */ +attribute_deprecated +int av_vsink_buffer_get_video_buffer_ref(AVFilterContext *buffer_sink, + AVFilterBufferRef **picref, int flags); +#endif + +/** * Get a buffer with filtered data from sink and put it in buf. * * @param sink pointer to a context of a buffersink or abuffersink AVFilter. |