diff options
Diffstat (limited to 'libavfilter/internal.h')
| -rw-r--r-- | libavfilter/internal.h | 163 |
1 files changed, 150 insertions, 13 deletions
diff --git a/libavfilter/internal.h b/libavfilter/internal.h index 6a752dc..308b115 100644 --- a/libavfilter/internal.h +++ b/libavfilter/internal.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 */ @@ -26,8 +26,32 @@ #include "libavutil/internal.h" #include "avfilter.h" +#include "avfiltergraph.h" +#include "formats.h" #include "thread.h" #include "version.h" +#include "video.h" + +#define POOL_SIZE 32 +typedef struct AVFilterPool { + AVFilterBufferRef *pic[POOL_SIZE]; + int count; + int refcount; + int draining; +} AVFilterPool; + +typedef struct AVFilterCommand { + double time; ///< time expressed in seconds + char *command; ///< command + char *arg; ///< optional argument for the command + int flags; + struct AVFilterCommand *next; +} AVFilterCommand; + +/** + * Update the position of a link in the age heap. + */ +void ff_avfilter_graph_update_heap(AVFilterGraph *graph, AVFilterLink *link); #if !FF_API_AVFILTERPAD_PUBLIC /** @@ -48,7 +72,7 @@ struct AVFilterPad { /** * Callback function to get a video buffer. If NULL, the filter system will - * use avfilter_default_get_video_buffer(). + * use ff_default_get_video_buffer(). * * Input video pads only. */ @@ -56,7 +80,7 @@ struct AVFilterPad { /** * Callback function to get an audio buffer. If NULL, the filter system will - * use avfilter_default_get_audio_buffer(). + * use ff_default_get_audio_buffer(). * * Input audio pads only. */ @@ -145,9 +169,82 @@ void ff_avfilter_default_free_buffer(AVFilterBuffer *buf); /** Tell is a format is contained in the provided list terminated by -1. */ int ff_fmt_is_in(int fmt, const int *fmts); -#define FF_DPRINTF_START(ctx, func) av_dlog(NULL, "%-16s: ", #func) +/* Functions to parse audio format arguments */ + +/** + * Parse a pixel format. + * + * @param ret pixel format pointer to where the value should be written + * @param arg string to parse + * @param log_ctx log context + * @return >= 0 in case of success, a negative AVERROR code on error + */ +int ff_parse_pixel_format(enum AVPixelFormat *ret, const char *arg, void *log_ctx); + +/** + * Parse a sample rate. + * + * @param ret unsigned integer pointer to where the value should be written + * @param arg string to parse + * @param log_ctx log context + * @return >= 0 in case of success, a negative AVERROR code on error + */ +int ff_parse_sample_rate(int *ret, const char *arg, void *log_ctx); + +/** + * Parse a time base. + * + * @param ret unsigned AVRational pointer to where the value should be written + * @param arg string to parse + * @param log_ctx log context + * @return >= 0 in case of success, a negative AVERROR code on error + */ +int ff_parse_time_base(AVRational *ret, const char *arg, void *log_ctx); + +/** + * Parse a sample format name or a corresponding integer representation. + * + * @param ret integer pointer to where the value should be written + * @param arg string to parse + * @param log_ctx log context + * @return >= 0 in case of success, a negative AVERROR code on error + */ +int ff_parse_sample_format(int *ret, const char *arg, void *log_ctx); + +/** + * Parse a channel layout or a corresponding integer representation. + * + * @param ret 64bit integer pointer to where the value should be written. + * @param nret integer pointer to the number of channels; + * if not NULL, then unknown channel layouts are accepted + * @param arg string to parse + * @param log_ctx log context + * @return >= 0 in case of success, a negative AVERROR code on error + */ +int ff_parse_channel_layout(int64_t *ret, int *nret, const char *arg, + void *log_ctx); + +void ff_update_link_current_pts(AVFilterLink *link, int64_t pts); + +void ff_command_queue_pop(AVFilterContext *filter); + +/* misc trace functions */ + +/* #define FF_AVFILTER_TRACE */ + +#ifdef FF_AVFILTER_TRACE +# define ff_tlog(pctx, ...) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__) +#else +# define ff_tlog(pctx, ...) do { if (0) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__); } while (0) +#endif + +#define FF_TPRINTF_START(ctx, func) ff_tlog(NULL, "%-16s: ", #func) + +char *ff_get_ref_perms_string(char *buf, size_t buf_size, int perms); -void ff_dlog_link(void *ctx, AVFilterLink *link, int end); +void ff_tlog_ref(void *ctx, AVFrame *ref, int end); + +void ff_tlog_link(void *ctx, AVFilterLink *link, int end); /** * Insert a new pad. @@ -161,35 +258,38 @@ void ff_dlog_link(void *ctx, AVFilterLink *link, int end); * @param pads Pointer to the pointer to the beginning of the list of pads * @param links Pointer to the pointer to the beginning of the list of links * @param newpad The new pad to add. A copy is made when adding. + * @return >= 0 in case of success, a negative AVERROR code on error */ -void ff_insert_pad(unsigned idx, unsigned *count, size_t padidx_off, +int ff_insert_pad(unsigned idx, unsigned *count, size_t padidx_off, AVFilterPad **pads, AVFilterLink ***links, AVFilterPad *newpad); /** Insert a new input pad for the filter. */ -static inline void ff_insert_inpad(AVFilterContext *f, unsigned index, +static inline int ff_insert_inpad(AVFilterContext *f, unsigned index, AVFilterPad *p) { - ff_insert_pad(index, &f->nb_inputs, offsetof(AVFilterLink, dstpad), + int ret = ff_insert_pad(index, &f->nb_inputs, offsetof(AVFilterLink, dstpad), &f->input_pads, &f->inputs, p); #if FF_API_FOO_COUNT FF_DISABLE_DEPRECATION_WARNINGS f->input_count = f->nb_inputs; FF_ENABLE_DEPRECATION_WARNINGS #endif + return ret; } /** Insert a new output pad for the filter. */ -static inline void ff_insert_outpad(AVFilterContext *f, unsigned index, +static inline int ff_insert_outpad(AVFilterContext *f, unsigned index, AVFilterPad *p) { - ff_insert_pad(index, &f->nb_outputs, offsetof(AVFilterLink, srcpad), + int ret = ff_insert_pad(index, &f->nb_outputs, offsetof(AVFilterLink, srcpad), &f->output_pads, &f->outputs, p); #if FF_API_FOO_COUNT FF_DISABLE_DEPRECATION_WARNINGS f->output_count = f->nb_outputs; FF_ENABLE_DEPRECATION_WARNINGS #endif + return ret; } /** @@ -209,6 +309,29 @@ int ff_poll_frame(AVFilterLink *link); */ int ff_request_frame(AVFilterLink *link); +#define AVFILTER_DEFINE_CLASS(fname) \ + static const AVClass fname##_class = { \ + .class_name = #fname, \ + .item_name = av_default_item_name, \ + .option = fname##_options, \ + .version = LIBAVUTIL_VERSION_INT, \ + .category = AV_CLASS_CATEGORY_FILTER, \ + } + +AVFilterBufferRef *ff_copy_buffer_ref(AVFilterLink *outlink, + AVFilterBufferRef *ref); + +/** + * Find the index of a link. + * + * I.e. find i such that link == ctx->(in|out)puts[i] + */ +#define FF_INLINK_IDX(link) ((int)((link)->dstpad - (link)->dst->input_pads)) +#define FF_OUTLINK_IDX(link) ((int)((link)->srcpad - (link)->src->output_pads)) + +int ff_buffersink_read_compat(AVFilterContext *ctx, AVFilterBufferRef **buf); +int ff_buffersink_read_samples_compat(AVFilterContext *ctx, AVFilterBufferRef **pbuf, + int nb_samples); /** * Send a frame of data to the next filter. * @@ -223,6 +346,20 @@ int ff_request_frame(AVFilterLink *link); int ff_filter_frame(AVFilterLink *link, AVFrame *frame); /** + * Flags for AVFilterLink.flags. + */ +enum { + + /** + * Frame requests may need to loop in order to be fulfilled. + * A filter must set this flags on an output link if it may return 0 in + * request_frame() without filtering a frame. + */ + FF_LINK_FLAG_REQUEST_LOOP = 1, + +}; + +/** * Allocate a new filter context and return it. * * @param filter what filter to create an instance of |
