/* * 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 *ff_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 *ff_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 ff_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); } AVFilterFormats *ff_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))) ff_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); // } AVFilterFormats *ff_planar_sample_fmts(void) { AVFilterFormats *ret = NULL; int fmt; for (fmt = 0; fmt < AV_SAMPLE_FMT_NB; fmt++) if (av_sample_fmt_is_planar(fmt)) ff_add_format(&ret, fmt); return ret; } 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 ff_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 ff_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 ff_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->nb_inputs; i++) { \ if (ctx->inputs[i] && !ctx->inputs[i]->out_fmts) { \ ref(fmts, &ctx->inputs[i]->out_fmts); \ count++; \ } \ } \ for (i = 0; i < ctx->nb_outputs; i++) { \ if (ctx->outputs[i] && !ctx->outputs[i]->in_fmts) { \ 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, ff_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 ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats) { SET_COMMON_FORMATS(ctx, formats, in_formats, out_formats, ff_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; ff_set_common_formats(ctx, ff_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); } void avfilter_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats) { ff_set_common_formats(ctx, formats); } AVFilterFormats *avfilter_make_format_list(const int *fmts) { return ff_make_format_list(fmts); } int avfilter_add_format(AVFilterFormats **avff, int64_t fmt) { return ff_add_format(avff, fmt); } AVFilterFormats *avfilter_all_formats(enum AVMediaType type) { return ff_all_formats(type); } AVFilterFormats *avfilter_merge_formats(AVFilterFormats *a, AVFilterFormats *b) { return ff_merge_formats(a, b); } void avfilter_formats_ref(AVFilterFormats *f, AVFilterFormats **ref) { ff_formats_ref(f, ref); } void avfilter_formats_unref(AVFilterFormats **ref) { ff_formats_unref(ref); } void avfilter_formats_changeref(AVFilterFormats **oldref, AVFilterFormats **newref) { ff_formats_changeref(oldref, newref); } #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