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- /*
- * Filter layer - format negotiation
- * Copyright (c) 2007 Bobby Bingham
- *
- * This file is part of FFmpeg.
- *
- * 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.
- *
- * 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 FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- #include "libavutil/eval.h"
- #include "libavutil/pixdesc.h"
- #include "libavutil/parseutils.h"
- #include "libavutil/audioconvert.h"
- #include "avfilter.h"
- #include "internal.h"
- #include "formats.h"
- /**
- * Add all refs from a to ret and destroy a.
- */
- #define MERGE_REF(ret, a, fmts, type, fail) \
- do { \
- type ***tmp; \
- int i; \
- \
- if (!(tmp = av_realloc(ret->refs, \
- sizeof(*tmp) * (ret->refcount + a->refcount)))) \
- goto fail; \
- ret->refs = tmp; \
- \
- for (i = 0; i < a->refcount; i ++) { \
- ret->refs[ret->refcount] = a->refs[i]; \
- *ret->refs[ret->refcount++] = ret; \
- } \
- \
- av_freep(&a->refs); \
- av_freep(&a->fmts); \
- av_freep(&a); \
- } while (0)
- /**
- * Add all formats common for a and b to ret, copy the refs and destroy
- * a and b.
- */
- #define MERGE_FORMATS(ret, a, b, fmts, nb, type, fail) \
- do { \
- int i, j, k = 0, count = FFMIN(a->nb, b->nb); \
- \
- if (!(ret = av_mallocz(sizeof(*ret)))) \
- goto fail; \
- \
- if (count) { \
- if (!(ret->fmts = av_malloc(sizeof(*ret->fmts) * count))) \
- goto fail; \
- for (i = 0; i < a->nb; i++) \
- for (j = 0; j < b->nb; j++) \
- if (a->fmts[i] == b->fmts[j]) { \
- if(k >= FFMIN(a->nb, b->nb)){ \
- av_log(0, AV_LOG_ERROR, "Duplicate formats in avfilter_merge_formats() detected\n"); \
- av_free(ret->fmts); \
- av_free(ret); \
- return NULL; \
- } \
- ret->fmts[k++] = a->fmts[i]; \
- } \
- } \
- ret->nb = k; \
- /* check that there was at least one common format */ \
- if (!ret->nb) \
- goto fail; \
- \
- MERGE_REF(ret, a, fmts, type, fail); \
- MERGE_REF(ret, b, fmts, type, fail); \
- } while (0)
- AVFilterFormats *avfilter_merge_formats(AVFilterFormats *a, AVFilterFormats *b)
- {
- AVFilterFormats *ret = NULL;
- if (a == b)
- return a;
- MERGE_FORMATS(ret, a, b, formats, format_count, AVFilterFormats, fail);
- return ret;
- fail:
- if (ret) {
- av_freep(&ret->refs);
- av_freep(&ret->formats);
- }
- av_freep(&ret);
- return NULL;
- }
- AVFilterFormats *ff_merge_samplerates(AVFilterFormats *a,
- AVFilterFormats *b)
- {
- AVFilterFormats *ret = NULL;
- if (a == b) return a;
- if (a->format_count && b->format_count) {
- MERGE_FORMATS(ret, a, b, formats, format_count, AVFilterFormats, fail);
- } else if (a->format_count) {
- MERGE_REF(a, b, formats, AVFilterFormats, fail);
- ret = a;
- } else {
- MERGE_REF(b, a, formats, AVFilterFormats, fail);
- ret = b;
- }
- return ret;
- fail:
- if (ret) {
- av_freep(&ret->refs);
- av_freep(&ret->formats);
- }
- av_freep(&ret);
- return NULL;
- }
- AVFilterChannelLayouts *ff_merge_channel_layouts(AVFilterChannelLayouts *a,
- AVFilterChannelLayouts *b)
- {
- AVFilterChannelLayouts *ret = NULL;
- if (a == b) return a;
- if (a->nb_channel_layouts && b->nb_channel_layouts) {
- MERGE_FORMATS(ret, a, b, channel_layouts, nb_channel_layouts,
- AVFilterChannelLayouts, fail);
- } else if (a->nb_channel_layouts) {
- MERGE_REF(a, b, channel_layouts, AVFilterChannelLayouts, fail);
- ret = a;
- } else {
- MERGE_REF(b, a, channel_layouts, AVFilterChannelLayouts, fail);
- ret = b;
- }
- return ret;
- fail:
- if (ret) {
- av_freep(&ret->refs);
- av_freep(&ret->channel_layouts);
- }
- av_freep(&ret);
- return NULL;
- }
- int ff_fmt_is_in(int fmt, const int *fmts)
- {
- const int *p;
- for (p = fmts; *p != -1; p++) {
- if (fmt == *p)
- return 1;
- }
- return 0;
- }
- #define COPY_INT_LIST(list_copy, list, type) { \
- int count = 0; \
- if (list) \
- for (count = 0; list[count] != -1; count++) \
- ; \
- list_copy = av_calloc(count+1, sizeof(type)); \
- if (list_copy) { \
- memcpy(list_copy, list, sizeof(type) * count); \
- list_copy[count] = -1; \
- } \
- }
- int *ff_copy_int_list(const int * const list)
- {
- int *ret = NULL;
- COPY_INT_LIST(ret, list, int);
- return ret;
- }
- int64_t *ff_copy_int64_list(const int64_t * const list)
- {
- int64_t *ret = NULL;
- COPY_INT_LIST(ret, list, int64_t);
- return ret;
- }
- #define MAKE_FORMAT_LIST(type, field, count_field) \
- type *formats; \
- int count = 0; \
- if (fmts) \
- for (count = 0; fmts[count] != -1; count++) \
- ; \
- formats = av_mallocz(sizeof(*formats)); \
- if (!formats) return NULL; \
- formats->count_field = count; \
- if (count) { \
- formats->field = av_malloc(sizeof(*formats->field)*count); \
- if (!formats->field) { \
- av_free(formats); \
- return NULL; \
- } \
- }
- AVFilterFormats *avfilter_make_format_list(const int *fmts)
- {
- MAKE_FORMAT_LIST(AVFilterFormats, formats, format_count);
- while (count--)
- formats->formats[count] = fmts[count];
- return formats;
- }
- AVFilterChannelLayouts *avfilter_make_format64_list(const int64_t *fmts)
- {
- MAKE_FORMAT_LIST(AVFilterChannelLayouts,
- channel_layouts, nb_channel_layouts);
- if (count)
- memcpy(formats->channel_layouts, fmts,
- sizeof(*formats->channel_layouts) * count);
- return formats;
- }
- #define ADD_FORMAT(f, fmt, type, list, nb) \
- do { \
- type *fmts; \
- \
- if (!(*f) && !(*f = av_mallocz(sizeof(**f)))) \
- return AVERROR(ENOMEM); \
- \
- fmts = av_realloc((*f)->list, \
- sizeof(*(*f)->list) * ((*f)->nb + 1));\
- if (!fmts) \
- return AVERROR(ENOMEM); \
- \
- (*f)->list = fmts; \
- (*f)->list[(*f)->nb++] = fmt; \
- return 0; \
- } while (0)
- int avfilter_add_format(AVFilterFormats **avff, int64_t fmt)
- {
- ADD_FORMAT(avff, fmt, int, formats, format_count);
- }
- int ff_add_channel_layout(AVFilterChannelLayouts **l, uint64_t channel_layout)
- {
- ADD_FORMAT(l, channel_layout, uint64_t, channel_layouts, nb_channel_layouts);
- }
- #if FF_API_OLD_ALL_FORMATS_API
- AVFilterFormats *avfilter_all_formats(enum AVMediaType type)
- {
- return avfilter_make_all_formats(type);
- }
- #endif
- AVFilterFormats *avfilter_make_all_formats(enum AVMediaType type)
- {
- AVFilterFormats *ret = NULL;
- int fmt;
- int num_formats = type == AVMEDIA_TYPE_VIDEO ? PIX_FMT_NB :
- type == AVMEDIA_TYPE_AUDIO ? AV_SAMPLE_FMT_NB : 0;
- for (fmt = 0; fmt < num_formats; fmt++)
- if ((type != AVMEDIA_TYPE_VIDEO) ||
- (type == AVMEDIA_TYPE_VIDEO && !(av_pix_fmt_descriptors[fmt].flags & PIX_FMT_HWACCEL)))
- avfilter_add_format(&ret, fmt);
- return ret;
- }
- const int64_t avfilter_all_channel_layouts[] = {
- #include "all_channel_layouts.inc"
- -1
- };
- // AVFilterFormats *avfilter_make_all_channel_layouts(void)
- // {
- // return avfilter_make_format64_list(avfilter_all_channel_layouts);
- // }
- #if FF_API_PACKING
- AVFilterFormats *avfilter_make_all_packing_formats(void)
- {
- static const int packing[] = {
- AVFILTER_PACKED,
- AVFILTER_PLANAR,
- -1,
- };
- return avfilter_make_format_list(packing);
- }
- #endif
- AVFilterFormats *ff_all_samplerates(void)
- {
- AVFilterFormats *ret = av_mallocz(sizeof(*ret));
- return ret;
- }
- AVFilterChannelLayouts *ff_all_channel_layouts(void)
- {
- AVFilterChannelLayouts *ret = av_mallocz(sizeof(*ret));
- return ret;
- }
- #define FORMATS_REF(f, ref) \
- do { \
- *ref = f; \
- f->refs = av_realloc(f->refs, sizeof(*f->refs) * ++f->refcount); \
- f->refs[f->refcount-1] = ref; \
- } while (0)
- void ff_channel_layouts_ref(AVFilterChannelLayouts *f, AVFilterChannelLayouts **ref)
- {
- FORMATS_REF(f, ref);
- }
- void avfilter_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
- {
- FORMATS_REF(f, ref);
- }
- #define FIND_REF_INDEX(ref, idx) \
- do { \
- int i; \
- for (i = 0; i < (*ref)->refcount; i ++) \
- if((*ref)->refs[i] == ref) { \
- idx = i; \
- break; \
- } \
- } while (0)
- #define FORMATS_UNREF(ref, list) \
- do { \
- int idx = -1; \
- \
- if (!*ref) \
- return; \
- \
- FIND_REF_INDEX(ref, idx); \
- \
- if (idx >= 0) \
- memmove((*ref)->refs + idx, (*ref)->refs + idx + 1, \
- sizeof(*(*ref)->refs) * ((*ref)->refcount - idx - 1)); \
- \
- if(!--(*ref)->refcount) { \
- av_free((*ref)->list); \
- av_free((*ref)->refs); \
- av_free(*ref); \
- } \
- *ref = NULL; \
- } while (0)
- void avfilter_formats_unref(AVFilterFormats **ref)
- {
- FORMATS_UNREF(ref, formats);
- }
- void ff_channel_layouts_unref(AVFilterChannelLayouts **ref)
- {
- FORMATS_UNREF(ref, channel_layouts);
- }
- #define FORMATS_CHANGEREF(oldref, newref) \
- do { \
- int idx = -1; \
- \
- FIND_REF_INDEX(oldref, idx); \
- \
- if (idx >= 0) { \
- (*oldref)->refs[idx] = newref; \
- *newref = *oldref; \
- *oldref = NULL; \
- } \
- } while (0)
- void ff_channel_layouts_changeref(AVFilterChannelLayouts **oldref,
- AVFilterChannelLayouts **newref)
- {
- FORMATS_CHANGEREF(oldref, newref);
- }
- void avfilter_formats_changeref(AVFilterFormats **oldref,
- AVFilterFormats **newref)
- {
- FORMATS_CHANGEREF(oldref, newref);
- }
- #define SET_COMMON_FORMATS(ctx, fmts, in_fmts, out_fmts, ref, list) \
- { \
- int count = 0, i; \
- \
- for (i = 0; i < ctx->input_count; i++) { \
- if (ctx->inputs[i]) { \
- ref(fmts, &ctx->inputs[i]->out_fmts); \
- count++; \
- } \
- } \
- for (i = 0; i < ctx->output_count; i++) { \
- if (ctx->outputs[i]) { \
- ref(fmts, &ctx->outputs[i]->in_fmts); \
- count++; \
- } \
- } \
- \
- if (!count) { \
- av_freep(&fmts->list); \
- av_freep(&fmts->refs); \
- av_freep(&fmts); \
- } \
- }
- void ff_set_common_channel_layouts(AVFilterContext *ctx,
- AVFilterChannelLayouts *layouts)
- {
- SET_COMMON_FORMATS(ctx, layouts, in_channel_layouts, out_channel_layouts,
- ff_channel_layouts_ref, channel_layouts);
- }
- void ff_set_common_samplerates(AVFilterContext *ctx,
- AVFilterFormats *samplerates)
- {
- SET_COMMON_FORMATS(ctx, samplerates, in_samplerates, out_samplerates,
- avfilter_formats_ref, formats);
- }
- /**
- * A helper for query_formats() which sets all links to the same list of
- * formats. If there are no links hooked to this filter, the list of formats is
- * freed.
- */
- void avfilter_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
- {
- SET_COMMON_FORMATS(ctx, formats, in_formats, out_formats,
- avfilter_formats_ref, formats);
- }
- int ff_default_query_formats(AVFilterContext *ctx)
- {
- enum AVMediaType type = ctx->inputs && ctx->inputs [0] ? ctx->inputs [0]->type :
- ctx->outputs && ctx->outputs[0] ? ctx->outputs[0]->type :
- AVMEDIA_TYPE_VIDEO;
- avfilter_set_common_formats(ctx, avfilter_all_formats(type));
- if (type == AVMEDIA_TYPE_AUDIO) {
- ff_set_common_channel_layouts(ctx, ff_all_channel_layouts());
- ff_set_common_samplerates(ctx, ff_all_samplerates());
- }
- return 0;
- }
- /* internal functions for parsing audio format arguments */
- int ff_parse_pixel_format(enum PixelFormat *ret, const char *arg, void *log_ctx)
- {
- char *tail;
- int pix_fmt = av_get_pix_fmt(arg);
- if (pix_fmt == PIX_FMT_NONE) {
- pix_fmt = strtol(arg, &tail, 0);
- if (*tail || (unsigned)pix_fmt >= PIX_FMT_NB) {
- av_log(log_ctx, AV_LOG_ERROR, "Invalid pixel format '%s'\n", arg);
- return AVERROR(EINVAL);
- }
- }
- *ret = pix_fmt;
- return 0;
- }
- int ff_parse_sample_format(int *ret, const char *arg, void *log_ctx)
- {
- char *tail;
- int sfmt = av_get_sample_fmt(arg);
- if (sfmt == AV_SAMPLE_FMT_NONE) {
- sfmt = strtol(arg, &tail, 0);
- if (*tail || (unsigned)sfmt >= AV_SAMPLE_FMT_NB) {
- av_log(log_ctx, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
- return AVERROR(EINVAL);
- }
- }
- *ret = sfmt;
- return 0;
- }
- int ff_parse_time_base(AVRational *ret, const char *arg, void *log_ctx)
- {
- AVRational r;
- if(av_parse_ratio(&r, arg, INT_MAX, 0, log_ctx) < 0 ||r.num<=0 ||r.den<=0) {
- av_log(log_ctx, AV_LOG_ERROR, "Invalid time base '%s'\n", arg);
- return AVERROR(EINVAL);
- }
- *ret = r;
- return 0;
- }
- int ff_parse_sample_rate(int *ret, const char *arg, void *log_ctx)
- {
- char *tail;
- double srate = av_strtod(arg, &tail);
- if (*tail || srate < 1 || (int)srate != srate || srate > INT_MAX) {
- av_log(log_ctx, AV_LOG_ERROR, "Invalid sample rate '%s'\n", arg);
- return AVERROR(EINVAL);
- }
- *ret = srate;
- return 0;
- }
- int ff_parse_channel_layout(int64_t *ret, const char *arg, void *log_ctx)
- {
- char *tail;
- int64_t chlayout = av_get_channel_layout(arg);
- if (chlayout == 0) {
- chlayout = strtol(arg, &tail, 10);
- if (*tail || chlayout == 0) {
- av_log(log_ctx, AV_LOG_ERROR, "Invalid channel layout '%s'\n", arg);
- return AVERROR(EINVAL);
- }
- }
- *ret = chlayout;
- return 0;
- }
- #if FF_API_FILTERS_PUBLIC
- int avfilter_default_query_formats(AVFilterContext *ctx)
- {
- return ff_default_query_formats(ctx);
- }
- #endif
- #ifdef TEST
- #undef printf
- int main(void)
- {
- const int64_t *cl;
- char buf[512];
- for (cl = avfilter_all_channel_layouts; *cl != -1; cl++) {
- av_get_channel_layout_string(buf, sizeof(buf), -1, *cl);
- printf("%s\n", buf);
- }
- return 0;
- }
- #endif
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